Fix sonar critical issues.

application/src/main/java/org/thingsboard/server/actors/plugin/PluginProcessingContext.java

@@ -272,130 +272,150 @@ public final class PluginProcessingContext implements PluginContext {
     private void validate(EntityId entityId, ValidationCallback callback) {
         if (securityCtx.isPresent()) {
             final PluginApiCallSecurityContext ctx = securityCtx.get();
-            if (ctx.isTenantAdmin() || ctx.isCustomerUser() || ctx.isSystemAdmin()) {
-                switch (entityId.getEntityType()) {
-                    case DEVICE:
-                        if (ctx.isSystemAdmin()) {
-                            callback.onSuccess(this, Boolean.FALSE);
-                        } else {
-                            ListenableFuture<Device> deviceFuture = pluginCtx.deviceService.findDeviceByIdAsync(new DeviceId(entityId.getId()));
-                            Futures.addCallback(deviceFuture, getCallback(callback, device -> {
-                                if (device == null) {
-                                    return Boolean.FALSE;
-                                } else {
-                                    if (!device.getTenantId().equals(ctx.getTenantId())) {
-                                        return Boolean.FALSE;
-                                    } else if (ctx.isCustomerUser() && !device.getCustomerId().equals(ctx.getCustomerId())) {
-                                        return Boolean.FALSE;
-                                    } else {
-                                        return Boolean.TRUE;
-                                    }
-                                }
-                            }));
-                        }
-                        return;
-                    case ASSET:
-                        if (ctx.isSystemAdmin()) {
-                            callback.onSuccess(this, Boolean.FALSE);
-                        } else {
-                            ListenableFuture<Asset> assetFuture = pluginCtx.assetService.findAssetByIdAsync(new AssetId(entityId.getId()));
-                            Futures.addCallback(assetFuture, getCallback(callback, asset -> {
-                                if (asset == null) {
-                                    return Boolean.FALSE;
-                                } else {
-                                    if (!asset.getTenantId().equals(ctx.getTenantId())) {
-                                        return Boolean.FALSE;
-                                    } else if (ctx.isCustomerUser() && !asset.getCustomerId().equals(ctx.getCustomerId())) {
-                                        return Boolean.FALSE;
-                                    } else {
-                                        return Boolean.TRUE;
-                                    }
-                                }
-                            }));
-                        }
-                        return;
-                    case RULE:
-                        if (ctx.isCustomerUser()) {
-                            callback.onSuccess(this, Boolean.FALSE);
-                        } else {
-                            ListenableFuture<RuleMetaData> ruleFuture = pluginCtx.ruleService.findRuleByIdAsync(new RuleId(entityId.getId()));
-                            Futures.addCallback(ruleFuture, getCallback(callback, rule -> {
-                                if (rule == null) {
-                                    return Boolean.FALSE;
-                                } else {
-                                    if (ctx.isTenantAdmin() && !rule.getTenantId().equals(ctx.getTenantId())) {
-                                        return Boolean.FALSE;
-                                    } else if (ctx.isSystemAdmin() && !rule.getTenantId().isNullUid()) {
-                                        return Boolean.FALSE;
-                                    } else {
-                                        return Boolean.TRUE;
-                                    }
-                                }
-                            }));
-                        }
-                        return;
-                    case PLUGIN:
-                        if (ctx.isCustomerUser()) {
-                            callback.onSuccess(this, Boolean.FALSE);
-                        } else {
-                            ListenableFuture<PluginMetaData> pluginFuture = pluginCtx.pluginService.findPluginByIdAsync(new PluginId(entityId.getId()));
-                            Futures.addCallback(pluginFuture, getCallback(callback, plugin -> {
-                                if (plugin == null) {
-                                    return Boolean.FALSE;
-                                } else {
-                                    if (ctx.isTenantAdmin() && !plugin.getTenantId().equals(ctx.getTenantId())) {
-                                        return Boolean.FALSE;
-                                    } else if (ctx.isSystemAdmin() && !plugin.getTenantId().isNullUid()) {
-                                        return Boolean.FALSE;
-                                    } else {
-                                        return Boolean.TRUE;
-                                    }
-                                }
-                            }));
-                        }
-                        return;
-                    case CUSTOMER:
-                        if (ctx.isSystemAdmin()) {
-                            callback.onSuccess(this, Boolean.FALSE);
-                        } else {
-                            ListenableFuture<Customer> customerFuture = pluginCtx.customerService.findCustomerByIdAsync(new CustomerId(entityId.getId()));
-                            Futures.addCallback(customerFuture, getCallback(callback, customer -> {
-                                if (customer == null) {
-                                    return Boolean.FALSE;
-                                } else {
-                                    if (!customer.getTenantId().equals(ctx.getTenantId())) {
-                                        return Boolean.FALSE;
-                                    } else if (ctx.isCustomerUser() && !customer.getId().equals(ctx.getCustomerId())) {
-                                        return Boolean.FALSE;
-                                    } else {
-                                        return Boolean.TRUE;
-                                    }
-                                }
-                            }));
-                        }
-                        return;
-                    case TENANT:
-                        if (ctx.isCustomerUser()) {
-                            callback.onSuccess(this, Boolean.FALSE);
-                        } else if (ctx.isSystemAdmin()) {
-                            callback.onSuccess(this, Boolean.TRUE);
-                        } else {
-                            ListenableFuture<Tenant> tenantFuture = pluginCtx.tenantService.findTenantByIdAsync(new TenantId(entityId.getId()));
-                            Futures.addCallback(tenantFuture, getCallback(callback, tenant -> tenant != null && tenant.getId().equals(ctx.getTenantId())));
-                        }
-                        return;
-                    default:
-                        //TODO: add support of other entities
-                        throw new IllegalStateException("Not Implemented!");
-                }
-            } else {
-                callback.onSuccess(this, Boolean.FALSE);
+            switch (entityId.getEntityType()) {
+                case DEVICE:
+                    validateDevice(ctx, entityId, callback);
+                    return;
+                case ASSET:
+                    validateAsset(ctx, entityId, callback);
+                    return;
+                case RULE:
+                    validateRule(ctx, entityId, callback);
+                    return;
+                case PLUGIN:
+                    validatePlugin(ctx, entityId, callback);
+                    return;
+                case CUSTOMER:
+                    validateCustomer(ctx, entityId, callback);
+                    return;
+                case TENANT:
+                    validateTenant(ctx, entityId, callback);
+                    return;
+                default:
+                    //TODO: add support of other entities
+                    throw new IllegalStateException("Not Implemented!");
             }
         } else {
             callback.onSuccess(this, Boolean.TRUE);
         }
     }
 
+    private void validateDevice(final PluginApiCallSecurityContext ctx, EntityId entityId, ValidationCallback callback) {
+        if (ctx.isSystemAdmin()) {
+            callback.onSuccess(this, Boolean.FALSE);
+        } else {
+            ListenableFuture<Device> deviceFuture = pluginCtx.deviceService.findDeviceByIdAsync(new DeviceId(entityId.getId()));
+            Futures.addCallback(deviceFuture, getCallback(callback, device -> {
+                if (device == null) {
+                    return Boolean.FALSE;
+                } else {
+                    if (!device.getTenantId().equals(ctx.getTenantId())) {
+                        return Boolean.FALSE;
+                    } else if (ctx.isCustomerUser() && !device.getCustomerId().equals(ctx.getCustomerId())) {
+                        return Boolean.FALSE;
+                    } else {
+                        return Boolean.TRUE;
+                    }
+                }
+            }));
+        }
+    }
+
+    private void validateAsset(final PluginApiCallSecurityContext ctx, EntityId entityId, ValidationCallback callback) {
+        if (ctx.isSystemAdmin()) {
+            callback.onSuccess(this, Boolean.FALSE);
+        } else {
+            ListenableFuture<Asset> assetFuture = pluginCtx.assetService.findAssetByIdAsync(new AssetId(entityId.getId()));
+            Futures.addCallback(assetFuture, getCallback(callback, asset -> {
+                if (asset == null) {
+                    return Boolean.FALSE;
+                } else {
+                    if (!asset.getTenantId().equals(ctx.getTenantId())) {
+                        return Boolean.FALSE;
+                    } else if (ctx.isCustomerUser() && !asset.getCustomerId().equals(ctx.getCustomerId())) {
+                        return Boolean.FALSE;
+                    } else {
+                        return Boolean.TRUE;
+                    }
+                }
+            }));
+        }
+    }
+
+    private void validateRule(final PluginApiCallSecurityContext ctx, EntityId entityId, ValidationCallback callback) {
+        if (ctx.isCustomerUser()) {
+            callback.onSuccess(this, Boolean.FALSE);
+        } else {
+            ListenableFuture<RuleMetaData> ruleFuture = pluginCtx.ruleService.findRuleByIdAsync(new RuleId(entityId.getId()));
+            Futures.addCallback(ruleFuture, getCallback(callback, rule -> {
+                if (rule == null) {
+                    return Boolean.FALSE;
+                } else {
+                    if (ctx.isTenantAdmin() && !rule.getTenantId().equals(ctx.getTenantId())) {
+                        return Boolean.FALSE;
+                    } else if (ctx.isSystemAdmin() && !rule.getTenantId().isNullUid()) {
+                        return Boolean.FALSE;
+                    } else {
+                        return Boolean.TRUE;
+                    }
+                }
+            }));
+        }
+    }
+
+    private void validatePlugin(final PluginApiCallSecurityContext ctx, EntityId entityId, ValidationCallback callback) {
+        if (ctx.isCustomerUser()) {
+            callback.onSuccess(this, Boolean.FALSE);
+        } else {
+            ListenableFuture<PluginMetaData> pluginFuture = pluginCtx.pluginService.findPluginByIdAsync(new PluginId(entityId.getId()));
+            Futures.addCallback(pluginFuture, getCallback(callback, plugin -> {
+                if (plugin == null) {
+                    return Boolean.FALSE;
+                } else {
+                    if (ctx.isTenantAdmin() && !plugin.getTenantId().equals(ctx.getTenantId())) {
+                        return Boolean.FALSE;
+                    } else if (ctx.isSystemAdmin() && !plugin.getTenantId().isNullUid()) {
+                        return Boolean.FALSE;
+                    } else {
+                        return Boolean.TRUE;
+                    }
+                }
+            }));
+        }
+    }
+
+    private void validateCustomer(final PluginApiCallSecurityContext ctx, EntityId entityId, ValidationCallback callback) {
+        if (ctx.isSystemAdmin()) {
+            callback.onSuccess(this, Boolean.FALSE);
+        } else {
+            ListenableFuture<Customer> customerFuture = pluginCtx.customerService.findCustomerByIdAsync(new CustomerId(entityId.getId()));
+            Futures.addCallback(customerFuture, getCallback(callback, customer -> {
+                if (customer == null) {
+                    return Boolean.FALSE;
+                } else {
+                    if (!customer.getTenantId().equals(ctx.getTenantId())) {
+                        return Boolean.FALSE;
+                    } else if (ctx.isCustomerUser() && !customer.getId().equals(ctx.getCustomerId())) {
+                        return Boolean.FALSE;
+                    } else {
+                        return Boolean.TRUE;
+                    }
+                }
+            }));
+        }
+    }
+
+    private void validateTenant(final PluginApiCallSecurityContext ctx, EntityId entityId, ValidationCallback callback) {
+        if (ctx.isCustomerUser()) {
+            callback.onSuccess(this, Boolean.FALSE);
+        } else if (ctx.isSystemAdmin()) {
+            callback.onSuccess(this, Boolean.TRUE);
+        } else {
+            ListenableFuture<Tenant> tenantFuture = pluginCtx.tenantService.findTenantByIdAsync(new TenantId(entityId.getId()));
+            Futures.addCallback(tenantFuture, getCallback(callback, tenant -> tenant != null && tenant.getId().equals(ctx.getTenantId())));
+        }
+    }
+
     @Override
     public ListenableFuture<List<EntityRelation>> findByFromAndType(EntityId from, String relationType) {
         return this.pluginCtx.relationService.findByFromAndType(from, relationType, RelationTypeGroup.COMMON);

application/src/main/java/org/thingsboard/server/actors/plugin/RuleToPluginMsgWrapper.java

@@ -59,7 +59,7 @@ public class RuleToPluginMsgWrapper implements ToPluginActorMsg, RuleAwareMsg {
     }
 
 
-    public RuleToPluginMsg<?> getMsg() {
+    public RuleToPluginMsg getMsg() {
         return msg;
     }
 

application/src/main/java/org/thingsboard/server/actors/rpc/BasicRpcSessionListener.java

@@ -45,6 +45,7 @@ import java.util.UUID;
 @Slf4j
 public class BasicRpcSessionListener implements GrpcSessionListener {
 
+    public static final String SESSION_RECEIVED_SESSION_ACTOR_MSG = "{} session [{}] received session actor msg {}";
     private final ActorSystemContext context;
     private final ActorService service;
     private final ActorRef manager;
@@ -93,25 +94,25 @@ public class BasicRpcSessionListener implements GrpcSessionListener {
 
     @Override
     public void onToDeviceSessionActorRpcMsg(GrpcSession session, ClusterAPIProtos.ToDeviceSessionActorRpcMessage msg) {
-        log.trace("{} session [{}] received session actor msg {}", getType(session), session.getRemoteServer(), msg);
+        log.trace(SESSION_RECEIVED_SESSION_ACTOR_MSG, getType(session), session.getRemoteServer(), msg);
         service.onMsg((ToDeviceSessionActorMsg) deserialize(msg.getData().toByteArray()));
     }
 
     @Override
     public void onToDeviceRpcRequestRpcMsg(GrpcSession session, ClusterAPIProtos.ToDeviceRpcRequestRpcMessage msg) {
-        log.trace("{} session [{}] received session actor msg {}", getType(session), session.getRemoteServer(), msg);
+        log.trace(SESSION_RECEIVED_SESSION_ACTOR_MSG, getType(session), session.getRemoteServer(), msg);
         service.onMsg(deserialize(session.getRemoteServer(), msg));
     }
 
     @Override
     public void onFromDeviceRpcResponseRpcMsg(GrpcSession session, ClusterAPIProtos.ToPluginRpcResponseRpcMessage msg) {
-        log.trace("{} session [{}] received session actor msg {}", getType(session), session.getRemoteServer(), msg);
+        log.trace(SESSION_RECEIVED_SESSION_ACTOR_MSG, getType(session), session.getRemoteServer(), msg);
         service.onMsg(deserialize(session.getRemoteServer(), msg));
     }
 
     @Override
     public void onToAllNodesRpcMessage(GrpcSession session, ClusterAPIProtos.ToAllNodesRpcMessage msg) {
-        log.trace("{} session [{}] received session actor msg {}", getType(session), session.getRemoteServer(), msg);
+        log.trace(SESSION_RECEIVED_SESSION_ACTOR_MSG, getType(session), session.getRemoteServer(), msg);
         service.onMsg((ToAllNodesMsg) deserialize(msg.getData().toByteArray()));
     }
 

application/src/main/java/org/thingsboard/server/actors/rule/RuleActorMessageProcessor.java

@@ -322,7 +322,7 @@ class RuleActorMessageProcessor extends ComponentMsgProcessor<RuleId> {
 
     @Override
     public void onClusterEventMsg(ClusterEventMsg msg) throws Exception {
-
+        //Do nothing
     }
 
     private void stopAction() {

application/src/main/java/org/thingsboard/server/actors/service/ComponentActor.java

@@ -104,6 +104,9 @@ public abstract class ComponentActor<T extends EntityId, P extends ComponentMsgP
                     break;
                 case DELETED:
                     processor.onStop(context());
+                    break;
+                default:
+                    break;
             }
             logLifecycleEvent(msg.getEvent());
         } catch (Exception e) {

application/src/main/java/org/thingsboard/server/actors/service/ContextBasedCreator.java

@@ -23,7 +23,7 @@ public abstract class ContextBasedCreator<T> implements Creator<T> {
 
     private static final long serialVersionUID = 1L;
 
-    protected final ActorSystemContext context;
+    protected final transient ActorSystemContext context;
 
     public ContextBasedCreator(ActorSystemContext context) {
         super();

application/src/main/java/org/thingsboard/server/actors/service/DefaultActorService.java

@@ -202,7 +202,7 @@ public class DefaultActorService implements ActorService {
 
     @Override
     public void onServerUpdated(ServerInstance server) {
-
+        //Do nothing
     }
 
     @Override

application/src/main/java/org/thingsboard/server/actors/session/ASyncMsgProcessor.java

@@ -77,6 +77,8 @@ class ASyncMsgProcessor extends AbstractSessionActorMsgProcessor {
             case UNSUBSCRIBE_RPC_COMMANDS_REQUEST:
                 subscribedToRpcCommands = false;
                 break;
+            default:
+                break;
         }
         currentTargetServer = forwardToAppActor(ctx, pendingMsg);
     }
@@ -94,6 +96,8 @@ class ASyncMsgProcessor extends AbstractSessionActorMsgProcessor {
                             pendingMap.remove(responseMsg.getRequestId());
                         }
                         break;
+                    default:
+                        break;
                 }
                 sessionCtx.onMsg(new BasicSessionActorToAdaptorMsg(this.sessionCtx, msg));
             } else {
@@ -109,6 +113,7 @@ class ASyncMsgProcessor extends AbstractSessionActorMsgProcessor {
         // TODO Auto-generated method stub        
     }
 
+    @Override
     protected void cleanupSession(ActorContext ctx) {
         toDeviceMsg(new SessionCloseMsg()).ifPresent(m -> forwardToAppActor(ctx, m));
     }

application/src/main/java/org/thingsboard/server/actors/shared/plugin/TenantPluginManager.java

@@ -31,6 +31,7 @@ public class TenantPluginManager extends PluginManager {
         this.tenantId = tenantId;
     }
 
+    @Override
     public void init(ActorContext context) {
         if (systemContext.isTenantComponentsInitEnabled()) {
             super.init(context);

application/src/main/java/org/thingsboard/server/config/MvcCorsProperties.java

@@ -33,6 +33,7 @@ public class MvcCorsProperties {
     private Map<String, CorsConfiguration> mappings = new HashMap<>();
 
     public MvcCorsProperties() {
+        super();
     }
 
     public Map<String, CorsConfiguration> getMappings() {

application/src/main/java/org/thingsboard/server/config/WebSocketConfiguration.java

@@ -76,6 +76,7 @@ public class WebSocketConfiguration implements WebSocketConfigurer {
                     @Override
                     public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler,
                             Exception exception) {
+                        //Do nothing
                     }
                 });
     }

application/src/main/java/org/thingsboard/server/controller/AlarmController.java

@@ -30,13 +30,16 @@ import org.thingsboard.server.exception.ThingsboardException;
 @RequestMapping("/api")
 public class AlarmController extends BaseController {
 
+    public static final String ALARM_ID = "alarmId";
+
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/alarm/{alarmId}", method = RequestMethod.GET)
     @ResponseBody
-    public Alarm getAlarmById(@PathVariable("alarmId") String strAlarmId) throws ThingsboardException {
-        checkParameter("alarmId", strAlarmId);
+    public Alarm getAlarmById(@PathVariable(ALARM_ID) String strAlarmId) throws ThingsboardException {
+        checkParameter(ALARM_ID, strAlarmId);
         try {
             AlarmId alarmId = new AlarmId(toUUID(strAlarmId));
+
             return checkAlarmId(alarmId);
         } catch (Exception e) {
             throw handleException(e);
@@ -46,8 +49,8 @@ public class AlarmController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/alarm/info/{alarmId}", method = RequestMethod.GET)
     @ResponseBody
-    public AlarmInfo getAlarmInfoById(@PathVariable("alarmId") String strAlarmId) throws ThingsboardException {
-        checkParameter("alarmId", strAlarmId);
+    public AlarmInfo getAlarmInfoById(@PathVariable(ALARM_ID) String strAlarmId) throws ThingsboardException {
+        checkParameter(ALARM_ID, strAlarmId);
         try {
             AlarmId alarmId = new AlarmId(toUUID(strAlarmId));
             return checkAlarmInfoId(alarmId);
@@ -71,8 +74,8 @@ public class AlarmController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/alarm/{alarmId}/ack", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
-    public void ackAlarm(@PathVariable("alarmId") String strAlarmId) throws ThingsboardException {
-        checkParameter("alarmId", strAlarmId);
+    public void ackAlarm(@PathVariable(ALARM_ID) String strAlarmId) throws ThingsboardException {
+        checkParameter(ALARM_ID, strAlarmId);
         try {
             AlarmId alarmId = new AlarmId(toUUID(strAlarmId));
             checkAlarmId(alarmId);
@@ -85,8 +88,8 @@ public class AlarmController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/alarm/{alarmId}/clear", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
-    public void clearAlarm(@PathVariable("alarmId") String strAlarmId) throws ThingsboardException {
-        checkParameter("alarmId", strAlarmId);
+    public void clearAlarm(@PathVariable(ALARM_ID) String strAlarmId) throws ThingsboardException {
+        checkParameter(ALARM_ID, strAlarmId);
         try {
             AlarmId alarmId = new AlarmId(toUUID(strAlarmId));
             checkAlarmId(alarmId);

application/src/main/java/org/thingsboard/server/controller/AssetController.java

@@ -43,11 +43,13 @@ import java.util.stream.Collectors;
 @RequestMapping("/api")
 public class AssetController extends BaseController {
 
+    public static final String ASSET_ID = "assetId";
+
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/asset/{assetId}", method = RequestMethod.GET)
     @ResponseBody
-    public Asset getAssetById(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
-        checkParameter("assetId", strAssetId);
+    public Asset getAssetById(@PathVariable(ASSET_ID) String strAssetId) throws ThingsboardException {
+        checkParameter(ASSET_ID, strAssetId);
         try {
             AssetId assetId = new AssetId(toUUID(strAssetId));
             return checkAssetId(assetId);
@@ -80,8 +82,8 @@ public class AssetController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/asset/{assetId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteAsset(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
-        checkParameter("assetId", strAssetId);
+    public void deleteAsset(@PathVariable(ASSET_ID) String strAssetId) throws ThingsboardException {
+        checkParameter(ASSET_ID, strAssetId);
         try {
             AssetId assetId = new AssetId(toUUID(strAssetId));
             checkAssetId(assetId);
@@ -95,9 +97,9 @@ public class AssetController extends BaseController {
     @RequestMapping(value = "/customer/{customerId}/asset/{assetId}", method = RequestMethod.POST)
     @ResponseBody
     public Asset assignAssetToCustomer(@PathVariable("customerId") String strCustomerId,
-                                       @PathVariable("assetId") String strAssetId) throws ThingsboardException {
+                                       @PathVariable(ASSET_ID) String strAssetId) throws ThingsboardException {
         checkParameter("customerId", strCustomerId);
-        checkParameter("assetId", strAssetId);
+        checkParameter(ASSET_ID, strAssetId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             checkCustomerId(customerId);
@@ -114,8 +116,8 @@ public class AssetController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/asset/{assetId}", method = RequestMethod.DELETE)
     @ResponseBody
-    public Asset unassignAssetFromCustomer(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
-        checkParameter("assetId", strAssetId);
+    public Asset unassignAssetFromCustomer(@PathVariable(ASSET_ID) String strAssetId) throws ThingsboardException {
+        checkParameter(ASSET_ID, strAssetId);
         try {
             AssetId assetId = new AssetId(toUUID(strAssetId));
             Asset asset = checkAssetId(assetId);
@@ -131,8 +133,8 @@ public class AssetController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/public/asset/{assetId}", method = RequestMethod.POST)
     @ResponseBody
-    public Asset assignAssetToPublicCustomer(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
-        checkParameter("assetId", strAssetId);
+    public Asset assignAssetToPublicCustomer(@PathVariable(ASSET_ID) String strAssetId) throws ThingsboardException {
+        checkParameter(ASSET_ID, strAssetId);
         try {
             AssetId assetId = new AssetId(toUUID(strAssetId));
             Asset asset = checkAssetId(assetId);

application/src/main/java/org/thingsboard/server/controller/AuthController.java

@@ -60,9 +60,6 @@ public class AuthController extends BaseController {
     @Autowired
     private RefreshTokenRepository refreshTokenRepository;
 
-    @Autowired
-    private UserService userService;
-
     @Autowired
     private MailService mailService;
 

application/src/main/java/org/thingsboard/server/controller/BaseController.java

@@ -70,6 +70,8 @@ import static org.thingsboard.server.dao.service.Validator.validateId;
 @Slf4j
 public abstract class BaseController {
 
+    public static final String INCORRECT_TENANT_ID = "Incorrect tenantId ";
+    public static final String YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION = "You don't have permission to perform this operation!";
     @Autowired
     private ThingsboardErrorResponseHandler errorResponseHandler;
 
@@ -209,11 +211,11 @@ public abstract class BaseController {
     }
 
     void checkTenantId(TenantId tenantId) throws ThingsboardException {
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         SecurityUser authUser = getCurrentUser();
         if (authUser.getAuthority() != Authority.SYS_ADMIN &&
                 (authUser.getTenantId() == null || !authUser.getTenantId().equals(tenantId))) {
-            throw new ThingsboardException("You don't have permission to perform this operation!",
+            throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                     ThingsboardErrorCode.PERMISSION_DENIED);
         }
     }
@@ -229,7 +231,7 @@ public abstract class BaseController {
             if (authUser.getAuthority() == Authority.SYS_ADMIN ||
                     (authUser.getAuthority() != Authority.TENANT_ADMIN &&
                             (authUser.getCustomerId() == null || !authUser.getCustomerId().equals(customerId)))) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
             Customer customer = customerService.findCustomerById(customerId);
@@ -382,7 +384,7 @@ public abstract class BaseController {
         if (widgetsBundle.getTenantId() != null && !widgetsBundle.getTenantId().getId().equals(ModelConstants.NULL_UUID)) {
             checkTenantId(widgetsBundle.getTenantId());
         } else if (modify && getCurrentUser().getAuthority() != Authority.SYS_ADMIN) {
-            throw new ThingsboardException("You don't have permission to perform this operation!",
+            throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                     ThingsboardErrorCode.PERMISSION_DENIED);
         }
     }
@@ -403,7 +405,7 @@ public abstract class BaseController {
         if (widgetType.getTenantId() != null && !widgetType.getTenantId().getId().equals(ModelConstants.NULL_UUID)) {
             checkTenantId(widgetType.getTenantId());
         } else if (modify && getCurrentUser().getAuthority() != Authority.SYS_ADMIN) {
-            throw new ThingsboardException("You don't have permission to perform this operation!",
+            throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                     ThingsboardErrorCode.PERMISSION_DENIED);
         }
     }
@@ -437,7 +439,7 @@ public abstract class BaseController {
         SecurityUser authUser = getCurrentUser();
         if (authUser.getAuthority() == Authority.CUSTOMER_USER) {
             if (dashboard.getCustomerId() == null || dashboard.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
         }
@@ -480,11 +482,11 @@ public abstract class BaseController {
         checkNotNull(plugin);
         SecurityUser authUser = getCurrentUser();
         TenantId tenantId = plugin.getTenantId();
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         if (authUser.getAuthority() != Authority.SYS_ADMIN) {
             if (authUser.getTenantId() == null ||
                     !tenantId.getId().equals(ModelConstants.NULL_UUID) && !authUser.getTenantId().equals(tenantId)) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
 
             } else if (tenantId.getId().equals(ModelConstants.NULL_UUID)) {
@@ -508,11 +510,11 @@ public abstract class BaseController {
         checkNotNull(rule);
         SecurityUser authUser = getCurrentUser();
         TenantId tenantId = rule.getTenantId();
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         if (authUser.getAuthority() != Authority.SYS_ADMIN) {
             if (authUser.getTenantId() == null ||
                     !tenantId.getId().equals(ModelConstants.NULL_UUID) && !authUser.getTenantId().equals(tenantId)) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
 
             }

application/src/main/java/org/thingsboard/server/controller/CustomerController.java

@@ -32,11 +32,14 @@ import org.thingsboard.server.exception.ThingsboardException;
 @RequestMapping("/api")
 public class CustomerController extends BaseController {
 
+    public static final String CUSTOMER_ID = "customerId";
+    public static final String IS_PUBLIC = "isPublic";
+
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/customer/{customerId}", method = RequestMethod.GET)
     @ResponseBody
-    public Customer getCustomerById(@PathVariable("customerId") String strCustomerId) throws ThingsboardException {
-        checkParameter("customerId", strCustomerId);
+    public Customer getCustomerById(@PathVariable(CUSTOMER_ID) String strCustomerId) throws ThingsboardException {
+        checkParameter(CUSTOMER_ID, strCustomerId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             return checkCustomerId(customerId);
@@ -48,8 +51,8 @@ public class CustomerController extends BaseController {
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/customer/{customerId}/shortInfo", method = RequestMethod.GET)
     @ResponseBody
-    public JsonNode getShortCustomerInfoById(@PathVariable("customerId") String strCustomerId) throws ThingsboardException {
-        checkParameter("customerId", strCustomerId);
+    public JsonNode getShortCustomerInfoById(@PathVariable(CUSTOMER_ID) String strCustomerId) throws ThingsboardException {
+        checkParameter(CUSTOMER_ID, strCustomerId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             Customer customer = checkCustomerId(customerId);
@@ -57,10 +60,10 @@ public class CustomerController extends BaseController {
             ObjectNode infoObject = objectMapper.createObjectNode();
             infoObject.put("title", customer.getTitle());
             boolean isPublic = false;
-            if (customer.getAdditionalInfo() != null && customer.getAdditionalInfo().has("isPublic")) {
-                isPublic = customer.getAdditionalInfo().get("isPublic").asBoolean();
+            if (customer.getAdditionalInfo() != null && customer.getAdditionalInfo().has(IS_PUBLIC)) {
+                isPublic = customer.getAdditionalInfo().get(IS_PUBLIC).asBoolean();
             }
-            infoObject.put("isPublic", isPublic);
+            infoObject.put(IS_PUBLIC, isPublic);
             return infoObject;
         } catch (Exception e) {
             throw handleException(e);
@@ -70,8 +73,8 @@ public class CustomerController extends BaseController {
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/customer/{customerId}/title", method = RequestMethod.GET, produces = "application/text")
     @ResponseBody
-    public String getCustomerTitleById(@PathVariable("customerId") String strCustomerId) throws ThingsboardException {
-        checkParameter("customerId", strCustomerId);
+    public String getCustomerTitleById(@PathVariable(CUSTOMER_ID) String strCustomerId) throws ThingsboardException {
+        checkParameter(CUSTOMER_ID, strCustomerId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             Customer customer = checkCustomerId(customerId);
@@ -96,8 +99,8 @@ public class CustomerController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/{customerId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteCustomer(@PathVariable("customerId") String strCustomerId) throws ThingsboardException {
-        checkParameter("customerId", strCustomerId);
+    public void deleteCustomer(@PathVariable(CUSTOMER_ID) String strCustomerId) throws ThingsboardException {
+        checkParameter(CUSTOMER_ID, strCustomerId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             checkCustomerId(customerId);

application/src/main/java/org/thingsboard/server/controller/DashboardController.java

@@ -34,6 +34,8 @@ import org.thingsboard.server.exception.ThingsboardException;
 @RequestMapping("/api")
 public class DashboardController extends BaseController {
 
+    public static final String DASHBOARD_ID = "dashboardId";
+
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/dashboard/serverTime", method = RequestMethod.GET)
     @ResponseBody
@@ -44,8 +46,8 @@ public class DashboardController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/dashboard/info/{dashboardId}", method = RequestMethod.GET)
     @ResponseBody
-    public DashboardInfo getDashboardInfoById(@PathVariable("dashboardId") String strDashboardId) throws ThingsboardException {
-        checkParameter("dashboardId", strDashboardId);
+    public DashboardInfo getDashboardInfoById(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter(DASHBOARD_ID, strDashboardId);
         try {
             DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
             return checkDashboardInfoId(dashboardId);
@@ -57,8 +59,8 @@ public class DashboardController extends BaseController {
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/dashboard/{dashboardId}", method = RequestMethod.GET)
     @ResponseBody
-    public Dashboard getDashboardById(@PathVariable("dashboardId") String strDashboardId) throws ThingsboardException {
-        checkParameter("dashboardId", strDashboardId);
+    public Dashboard getDashboardById(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter(DASHBOARD_ID, strDashboardId);
         try {
             DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
             return checkDashboardId(dashboardId);
@@ -82,8 +84,8 @@ public class DashboardController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/dashboard/{dashboardId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteDashboard(@PathVariable("dashboardId") String strDashboardId) throws ThingsboardException {
-        checkParameter("dashboardId", strDashboardId);
+    public void deleteDashboard(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter(DASHBOARD_ID, strDashboardId);
         try {
             DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
             checkDashboardId(dashboardId);
@@ -97,9 +99,9 @@ public class DashboardController extends BaseController {
     @RequestMapping(value = "/customer/{customerId}/dashboard/{dashboardId}", method = RequestMethod.POST)
     @ResponseBody 
     public Dashboard assignDashboardToCustomer(@PathVariable("customerId") String strCustomerId,
-                                         @PathVariable("dashboardId") String strDashboardId) throws ThingsboardException {
+                                         @PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
         checkParameter("customerId", strCustomerId);
-        checkParameter("dashboardId", strDashboardId);
+        checkParameter(DASHBOARD_ID, strDashboardId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             checkCustomerId(customerId);
@@ -116,8 +118,8 @@ public class DashboardController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/dashboard/{dashboardId}", method = RequestMethod.DELETE)
     @ResponseBody 
-    public Dashboard unassignDashboardFromCustomer(@PathVariable("dashboardId") String strDashboardId) throws ThingsboardException {
-        checkParameter("dashboardId", strDashboardId);
+    public Dashboard unassignDashboardFromCustomer(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter(DASHBOARD_ID, strDashboardId);
         try {
             DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
             Dashboard dashboard = checkDashboardId(dashboardId);
@@ -133,8 +135,8 @@ public class DashboardController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/public/dashboard/{dashboardId}", method = RequestMethod.POST)
     @ResponseBody
-    public Dashboard assignDashboardToPublicCustomer(@PathVariable("dashboardId") String strDashboardId) throws ThingsboardException {
-        checkParameter("dashboardId", strDashboardId);
+    public Dashboard assignDashboardToPublicCustomer(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter(DASHBOARD_ID, strDashboardId);
         try {
             DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
             Dashboard dashboard = checkDashboardId(dashboardId);

application/src/main/java/org/thingsboard/server/controller/DeviceController.java

@@ -44,11 +44,13 @@ import java.util.stream.Collectors;
 @RequestMapping("/api")
 public class DeviceController extends BaseController {
 
+    public static final String DEVICE_ID = "deviceId";
+
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/device/{deviceId}", method = RequestMethod.GET)
     @ResponseBody
-    public Device getDeviceById(@PathVariable("deviceId") String strDeviceId) throws ThingsboardException {
-        checkParameter("deviceId", strDeviceId);
+    public Device getDeviceById(@PathVariable(DEVICE_ID) String strDeviceId) throws ThingsboardException {
+        checkParameter(DEVICE_ID, strDeviceId);
         try {
             DeviceId deviceId = new DeviceId(toUUID(strDeviceId));
             return checkDeviceId(deviceId);
@@ -88,8 +90,8 @@ public class DeviceController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/device/{deviceId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteDevice(@PathVariable("deviceId") String strDeviceId) throws ThingsboardException {
-        checkParameter("deviceId", strDeviceId);
+    public void deleteDevice(@PathVariable(DEVICE_ID) String strDeviceId) throws ThingsboardException {
+        checkParameter(DEVICE_ID, strDeviceId);
         try {
             DeviceId deviceId = new DeviceId(toUUID(strDeviceId));
             checkDeviceId(deviceId);
@@ -103,9 +105,9 @@ public class DeviceController extends BaseController {
     @RequestMapping(value = "/customer/{customerId}/device/{deviceId}", method = RequestMethod.POST)
     @ResponseBody
     public Device assignDeviceToCustomer(@PathVariable("customerId") String strCustomerId,
-                                         @PathVariable("deviceId") String strDeviceId) throws ThingsboardException {
+                                         @PathVariable(DEVICE_ID) String strDeviceId) throws ThingsboardException {
         checkParameter("customerId", strCustomerId);
-        checkParameter("deviceId", strDeviceId);
+        checkParameter(DEVICE_ID, strDeviceId);
         try {
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             checkCustomerId(customerId);
@@ -122,8 +124,8 @@ public class DeviceController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/device/{deviceId}", method = RequestMethod.DELETE)
     @ResponseBody
-    public Device unassignDeviceFromCustomer(@PathVariable("deviceId") String strDeviceId) throws ThingsboardException {
-        checkParameter("deviceId", strDeviceId);
+    public Device unassignDeviceFromCustomer(@PathVariable(DEVICE_ID) String strDeviceId) throws ThingsboardException {
+        checkParameter(DEVICE_ID, strDeviceId);
         try {
             DeviceId deviceId = new DeviceId(toUUID(strDeviceId));
             Device device = checkDeviceId(deviceId);
@@ -139,8 +141,8 @@ public class DeviceController extends BaseController {
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/customer/public/device/{deviceId}", method = RequestMethod.POST)
     @ResponseBody
-    public Device assignDeviceToPublicCustomer(@PathVariable("deviceId") String strDeviceId) throws ThingsboardException {
-        checkParameter("deviceId", strDeviceId);
+    public Device assignDeviceToPublicCustomer(@PathVariable(DEVICE_ID) String strDeviceId) throws ThingsboardException {
+        checkParameter(DEVICE_ID, strDeviceId);
         try {
             DeviceId deviceId = new DeviceId(toUUID(strDeviceId));
             Device device = checkDeviceId(deviceId);
@@ -154,8 +156,8 @@ public class DeviceController extends BaseController {
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/device/{deviceId}/credentials", method = RequestMethod.GET)
     @ResponseBody
-    public DeviceCredentials getDeviceCredentialsByDeviceId(@PathVariable("deviceId") String strDeviceId) throws ThingsboardException {
-        checkParameter("deviceId", strDeviceId);
+    public DeviceCredentials getDeviceCredentialsByDeviceId(@PathVariable(DEVICE_ID) String strDeviceId) throws ThingsboardException {
+        checkParameter(DEVICE_ID, strDeviceId);
         try {
             DeviceId deviceId = new DeviceId(toUUID(strDeviceId));
             checkDeviceId(deviceId);

application/src/main/java/org/thingsboard/server/controller/EntityRelationController.java

@@ -34,6 +34,12 @@ import java.util.List;
 @RequestMapping("/api")
 public class EntityRelationController extends BaseController {
 
+    public static final String TO_TYPE = "toType";
+    public static final String FROM_ID = "fromId";
+    public static final String FROM_TYPE = "fromType";
+    public static final String RELATION_TYPE = "relationType";
+    public static final String TO_ID = "toId";
+
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/relation", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
@@ -52,18 +58,18 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relation", method = RequestMethod.DELETE, params = {"fromId", "fromType", "relationType", "toId", "toType"})
+    @RequestMapping(value = "/relation", method = RequestMethod.DELETE, params = {FROM_ID, FROM_TYPE, RELATION_TYPE, TO_ID, TO_TYPE})
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteRelation(@RequestParam("fromId") String strFromId,
-                               @RequestParam("fromType") String strFromType,
-                               @RequestParam("relationType") String strRelationType,
+    public void deleteRelation(@RequestParam(FROM_ID) String strFromId,
+                               @RequestParam(FROM_TYPE) String strFromType,
+                               @RequestParam(RELATION_TYPE) String strRelationType,
                                @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup,
-                               @RequestParam("toId") String strToId, @RequestParam("toType") String strToType) throws ThingsboardException {
-        checkParameter("fromId", strFromId);
-        checkParameter("fromType", strFromType);
-        checkParameter("relationType", strRelationType);
-        checkParameter("toId", strToId);
-        checkParameter("toType", strToType);
+                               @RequestParam(TO_ID) String strToId, @RequestParam(TO_TYPE) String strToType) throws ThingsboardException {
+        checkParameter(FROM_ID, strFromId);
+        checkParameter(FROM_TYPE, strFromType);
+        checkParameter(RELATION_TYPE, strRelationType);
+        checkParameter(TO_ID, strToId);
+        checkParameter(TO_TYPE, strToType);
         EntityId fromId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
         EntityId toId = EntityIdFactory.getByTypeAndId(strToType, strToId);
         checkEntityId(fromId);
@@ -96,19 +102,19 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relation", method = RequestMethod.GET, params = {"fromId", "fromType", "relationType", "toId", "toType"})
+    @RequestMapping(value = "/relation", method = RequestMethod.GET, params = {FROM_ID, FROM_TYPE, RELATION_TYPE, TO_ID, TO_TYPE})
     @ResponseBody
-    public EntityRelation getRelation(@RequestParam("fromId") String strFromId,
-                              @RequestParam("fromType") String strFromType,
-                              @RequestParam("relationType") String strRelationType,
-                              @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup,
-                              @RequestParam("toId") String strToId, @RequestParam("toType") String strToType) throws ThingsboardException {
+    public EntityRelation getRelation(@RequestParam(FROM_ID) String strFromId,
+                                      @RequestParam(FROM_TYPE) String strFromType,
+                                      @RequestParam(RELATION_TYPE) String strRelationType,
+                                      @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup,
+                                      @RequestParam(TO_ID) String strToId, @RequestParam(TO_TYPE) String strToType) throws ThingsboardException {
         try {
-            checkParameter("fromId", strFromId);
-            checkParameter("fromType", strFromType);
-            checkParameter("relationType", strRelationType);
-            checkParameter("toId", strToId);
-            checkParameter("toType", strToType);
+            checkParameter(FROM_ID, strFromId);
+            checkParameter(FROM_TYPE, strFromType);
+            checkParameter(RELATION_TYPE, strRelationType);
+            checkParameter(TO_ID, strToId);
+            checkParameter(TO_TYPE, strToType);
             EntityId fromId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
             EntityId toId = EntityIdFactory.getByTypeAndId(strToType, strToId);
             checkEntityId(fromId);
@@ -121,13 +127,13 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"fromId", "fromType"})
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {FROM_ID, FROM_TYPE})
     @ResponseBody
-    public List<EntityRelation> findByFrom(@RequestParam("fromId") String strFromId,
-                                           @RequestParam("fromType") String strFromType,
+    public List<EntityRelation> findByFrom(@RequestParam(FROM_ID) String strFromId,
+                                           @RequestParam(FROM_TYPE) String strFromType,
                                            @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup) throws ThingsboardException {
-        checkParameter("fromId", strFromId);
-        checkParameter("fromType", strFromType);
+        checkParameter(FROM_ID, strFromId);
+        checkParameter(FROM_TYPE, strFromType);
         EntityId entityId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
         checkEntityId(entityId);
         RelationTypeGroup typeGroup = parseRelationTypeGroup(strRelationTypeGroup, RelationTypeGroup.COMMON);
@@ -139,13 +145,13 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relations/info", method = RequestMethod.GET, params = {"fromId", "fromType"})
+    @RequestMapping(value = "/relations/info", method = RequestMethod.GET, params = {FROM_ID, FROM_TYPE})
     @ResponseBody
-    public List<EntityRelationInfo> findInfoByFrom(@RequestParam("fromId") String strFromId,
-                                                   @RequestParam("fromType") String strFromType,
+    public List<EntityRelationInfo> findInfoByFrom(@RequestParam(FROM_ID) String strFromId,
+                                                   @RequestParam(FROM_TYPE) String strFromType,
                                                    @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup) throws ThingsboardException {
-        checkParameter("fromId", strFromId);
-        checkParameter("fromType", strFromType);
+        checkParameter(FROM_ID, strFromId);
+        checkParameter(FROM_TYPE, strFromType);
         EntityId entityId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
         checkEntityId(entityId);
         RelationTypeGroup typeGroup = parseRelationTypeGroup(strRelationTypeGroup, RelationTypeGroup.COMMON);
@@ -157,15 +163,15 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"fromId", "fromType", "relationType"})
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {FROM_ID, FROM_TYPE, RELATION_TYPE})
     @ResponseBody
-    public List<EntityRelation> findByFrom(@RequestParam("fromId") String strFromId,
-                                           @RequestParam("fromType") String strFromType,
-                                           @RequestParam("relationType") String strRelationType,
+    public List<EntityRelation> findByFrom(@RequestParam(FROM_ID) String strFromId,
+                                           @RequestParam(FROM_TYPE) String strFromType,
+                                           @RequestParam(RELATION_TYPE) String strRelationType,
                                            @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup) throws ThingsboardException {
-        checkParameter("fromId", strFromId);
-        checkParameter("fromType", strFromType);
-        checkParameter("relationType", strRelationType);
+        checkParameter(FROM_ID, strFromId);
+        checkParameter(FROM_TYPE, strFromType);
+        checkParameter(RELATION_TYPE, strRelationType);
         EntityId entityId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
         checkEntityId(entityId);
         RelationTypeGroup typeGroup = parseRelationTypeGroup(strRelationTypeGroup, RelationTypeGroup.COMMON);
@@ -177,13 +183,13 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"toId", "toType"})
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {TO_ID, TO_TYPE})
     @ResponseBody
-    public List<EntityRelation> findByTo(@RequestParam("toId") String strToId,
-                                         @RequestParam("toType") String strToType,
+    public List<EntityRelation> findByTo(@RequestParam(TO_ID) String strToId,
+                                         @RequestParam(TO_TYPE) String strToType,
                                          @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup) throws ThingsboardException {
-        checkParameter("toId", strToId);
-        checkParameter("toType", strToType);
+        checkParameter(TO_ID, strToId);
+        checkParameter(TO_TYPE, strToType);
         EntityId entityId = EntityIdFactory.getByTypeAndId(strToType, strToId);
         checkEntityId(entityId);
         RelationTypeGroup typeGroup = parseRelationTypeGroup(strRelationTypeGroup, RelationTypeGroup.COMMON);
@@ -195,13 +201,13 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relations/info", method = RequestMethod.GET, params = {"toId", "toType"})
+    @RequestMapping(value = "/relations/info", method = RequestMethod.GET, params = {TO_ID, TO_TYPE})
     @ResponseBody
-    public List<EntityRelationInfo> findInfoByTo(@RequestParam("toId") String strToId,
-                                                   @RequestParam("toType") String strToType,
+    public List<EntityRelationInfo> findInfoByTo(@RequestParam(TO_ID) String strToId,
+                                                   @RequestParam(TO_TYPE) String strToType,
                                                    @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup) throws ThingsboardException {
-        checkParameter("toId", strToId);
-        checkParameter("toType", strToType);
+        checkParameter(TO_ID, strToId);
+        checkParameter(TO_TYPE, strToType);
         EntityId entityId = EntityIdFactory.getByTypeAndId(strToType, strToId);
         checkEntityId(entityId);
         RelationTypeGroup typeGroup = parseRelationTypeGroup(strRelationTypeGroup, RelationTypeGroup.COMMON);
@@ -213,15 +219,15 @@ public class EntityRelationController extends BaseController {
     }
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"toId", "toType", "relationType"})
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {TO_ID, TO_TYPE, RELATION_TYPE})
     @ResponseBody
-    public List<EntityRelation> findByTo(@RequestParam("toId") String strToId,
-                                         @RequestParam("toType") String strToType,
-                                         @RequestParam("relationType") String strRelationType,
+    public List<EntityRelation> findByTo(@RequestParam(TO_ID) String strToId,
+                                         @RequestParam(TO_TYPE) String strToType,
+                                         @RequestParam(RELATION_TYPE) String strRelationType,
                                          @RequestParam(value = "relationTypeGroup", required = false) String strRelationTypeGroup) throws ThingsboardException {
-        checkParameter("toId", strToId);
-        checkParameter("toType", strToType);
-        checkParameter("relationType", strRelationType);
+        checkParameter(TO_ID, strToId);
+        checkParameter(TO_TYPE, strToType);
+        checkParameter(RELATION_TYPE, strRelationType);
         EntityId entityId = EntityIdFactory.getByTypeAndId(strToType, strToId);
         checkEntityId(entityId);
         RelationTypeGroup typeGroup = parseRelationTypeGroup(strRelationTypeGroup, RelationTypeGroup.COMMON);

application/src/main/java/org/thingsboard/server/controller/PluginController.java

@@ -34,11 +34,13 @@ import java.util.List;
 @RequestMapping("/api")
 public class PluginController extends BaseController {
 
+    public static final String PLUGIN_ID = "pluginId";
+
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/plugin/{pluginId}", method = RequestMethod.GET)
     @ResponseBody
-    public PluginMetaData getPluginById(@PathVariable("pluginId") String strPluginId) throws ThingsboardException {
-        checkParameter("pluginId", strPluginId);
+    public PluginMetaData getPluginById(@PathVariable(PLUGIN_ID) String strPluginId) throws ThingsboardException {
+        checkParameter(PLUGIN_ID, strPluginId);
         try {
             PluginId pluginId = new PluginId(toUUID(strPluginId));
             return checkPlugin(pluginService.findPluginById(pluginId));
@@ -78,8 +80,8 @@ public class PluginController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/plugin/{pluginId}/activate", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
-    public void activatePluginById(@PathVariable("pluginId") String strPluginId) throws ThingsboardException {
-        checkParameter("pluginId", strPluginId);
+    public void activatePluginById(@PathVariable(PLUGIN_ID) String strPluginId) throws ThingsboardException {
+        checkParameter(PLUGIN_ID, strPluginId);
         try {
             PluginId pluginId = new PluginId(toUUID(strPluginId));
             PluginMetaData plugin = checkPlugin(pluginService.findPluginById(pluginId));
@@ -93,8 +95,8 @@ public class PluginController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/plugin/{pluginId}/suspend", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
-    public void suspendPluginById(@PathVariable("pluginId") String strPluginId) throws ThingsboardException {
-        checkParameter("pluginId", strPluginId);
+    public void suspendPluginById(@PathVariable(PLUGIN_ID) String strPluginId) throws ThingsboardException {
+        checkParameter(PLUGIN_ID, strPluginId);
         try {
             PluginId pluginId = new PluginId(toUUID(strPluginId));
             PluginMetaData plugin = checkPlugin(pluginService.findPluginById(pluginId));
@@ -180,8 +182,8 @@ public class PluginController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/plugin/{pluginId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deletePlugin(@PathVariable("pluginId") String strPluginId) throws ThingsboardException {
-        checkParameter("pluginId", strPluginId);
+    public void deletePlugin(@PathVariable(PLUGIN_ID) String strPluginId) throws ThingsboardException {
+        checkParameter(PLUGIN_ID, strPluginId);
         try {
             PluginId pluginId = new PluginId(toUUID(strPluginId));
             PluginMetaData plugin = checkPlugin(pluginService.findPluginById(pluginId));

application/src/main/java/org/thingsboard/server/controller/RuleController.java

@@ -34,11 +34,13 @@ import java.util.List;
 @RequestMapping("/api")
 public class RuleController extends BaseController {
 
+    public static final String RULE_ID = "ruleId";
+
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/rule/{ruleId}", method = RequestMethod.GET)
     @ResponseBody
-    public RuleMetaData getRuleById(@PathVariable("ruleId") String strRuleId) throws ThingsboardException {
-        checkParameter("ruleId", strRuleId);
+    public RuleMetaData getRuleById(@PathVariable(RULE_ID) String strRuleId) throws ThingsboardException {
+        checkParameter(RULE_ID, strRuleId);
         try {
             RuleId ruleId = new RuleId(toUUID(strRuleId));
             return checkRule(ruleService.findRuleById(ruleId));
@@ -80,8 +82,8 @@ public class RuleController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/rule/{ruleId}/activate", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
-    public void activateRuleById(@PathVariable("ruleId") String strRuleId) throws ThingsboardException {
-        checkParameter("ruleId", strRuleId);
+    public void activateRuleById(@PathVariable(RULE_ID) String strRuleId) throws ThingsboardException {
+        checkParameter(RULE_ID, strRuleId);
         try {
             RuleId ruleId = new RuleId(toUUID(strRuleId));
             RuleMetaData rule = checkRule(ruleService.findRuleById(ruleId));
@@ -95,8 +97,8 @@ public class RuleController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/rule/{ruleId}/suspend", method = RequestMethod.POST)
     @ResponseStatus(value = HttpStatus.OK)
-    public void suspendRuleById(@PathVariable("ruleId") String strRuleId) throws ThingsboardException {
-        checkParameter("ruleId", strRuleId);
+    public void suspendRuleById(@PathVariable(RULE_ID) String strRuleId) throws ThingsboardException {
+        checkParameter(RULE_ID, strRuleId);
         try {
             RuleId ruleId = new RuleId(toUUID(strRuleId));
             RuleMetaData rule = checkRule(ruleService.findRuleById(ruleId));
@@ -178,8 +180,8 @@ public class RuleController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/rule/{ruleId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteRule(@PathVariable("ruleId") String strRuleId) throws ThingsboardException {
-        checkParameter("ruleId", strRuleId);
+    public void deleteRule(@PathVariable(RULE_ID) String strRuleId) throws ThingsboardException {
+        checkParameter(RULE_ID, strRuleId);
         try {
             RuleId ruleId = new RuleId(toUUID(strRuleId));
             RuleMetaData rule = checkRule(ruleService.findRuleById(ruleId));

application/src/main/java/org/thingsboard/server/controller/UserController.java

@@ -38,19 +38,22 @@ import javax.servlet.http.HttpServletRequest;
 @RequestMapping("/api")
 public class UserController extends BaseController {
 
+    public static final String USER_ID = "userId";
+    public static final String YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION = "You don't have permission to perform this operation!";
+    public static final String ACTIVATE_URL_PATTERN = "%s/api/noauth/activate?activateToken=%s";
     @Autowired
     private MailService mailService;
 
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/user/{userId}", method = RequestMethod.GET)
     @ResponseBody
-    public User getUserById(@PathVariable("userId") String strUserId) throws ThingsboardException {
-        checkParameter("userId", strUserId);
+    public User getUserById(@PathVariable(USER_ID) String strUserId) throws ThingsboardException {
+        checkParameter(USER_ID, strUserId);
         try {
             UserId userId = new UserId(toUUID(strUserId));
             SecurityUser authUser = getCurrentUser();
             if (authUser.getAuthority() == Authority.CUSTOMER_USER && !authUser.getId().equals(userId)) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
             return checkUserId(userId);
@@ -68,7 +71,7 @@ public class UserController extends BaseController {
         try {
             SecurityUser authUser = getCurrentUser();
             if (authUser.getAuthority() == Authority.CUSTOMER_USER && !authUser.getId().equals(user.getId())) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
             boolean sendEmail = user.getId() == null && sendActivationMail;
@@ -79,7 +82,7 @@ public class UserController extends BaseController {
             if (sendEmail) {
                 UserCredentials userCredentials = userService.findUserCredentialsByUserId(savedUser.getId());
                 String baseUrl = constructBaseUrl(request);
-                String activateUrl = String.format("%s/api/noauth/activate?activateToken=%s", baseUrl,
+                String activateUrl = String.format(ACTIVATE_URL_PATTERN, baseUrl,
                         userCredentials.getActivateToken());
                 String email = savedUser.getEmail();
                 try {
@@ -106,7 +109,7 @@ public class UserController extends BaseController {
             UserCredentials userCredentials = userService.findUserCredentialsByUserId(user.getId());
             if (!userCredentials.isEnabled()) {
                 String baseUrl = constructBaseUrl(request);
-                String activateUrl = String.format("%s/api/noauth/activate?activateToken=%s", baseUrl,
+                String activateUrl = String.format(ACTIVATE_URL_PATTERN, baseUrl,
                         userCredentials.getActivateToken());
                 mailService.sendActivationEmail(activateUrl, email);
             } else {
@@ -121,21 +124,21 @@ public class UserController extends BaseController {
     @RequestMapping(value = "/user/{userId}/activationLink", method = RequestMethod.GET, produces = "text/plain")
     @ResponseBody
     public String getActivationLink(
-            @PathVariable("userId") String strUserId,
+            @PathVariable(USER_ID) String strUserId,
             HttpServletRequest request) throws ThingsboardException {
-        checkParameter("userId", strUserId);
+        checkParameter(USER_ID, strUserId);
         try {
             UserId userId = new UserId(toUUID(strUserId));
             SecurityUser authUser = getCurrentUser();
             if (authUser.getAuthority() == Authority.CUSTOMER_USER && !authUser.getId().equals(userId)) {
-                throw new ThingsboardException("You don't have permission to perform this operation!",
+                throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
             User user = checkUserId(userId);
             UserCredentials userCredentials = userService.findUserCredentialsByUserId(user.getId());
             if (!userCredentials.isEnabled()) {
                 String baseUrl = constructBaseUrl(request);
-                String activateUrl = String.format("%s/api/noauth/activate?activateToken=%s", baseUrl,
+                String activateUrl = String.format(ACTIVATE_URL_PATTERN, baseUrl,
                         userCredentials.getActivateToken());
                 return activateUrl;
             } else {
@@ -149,8 +152,8 @@ public class UserController extends BaseController {
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN')")
     @RequestMapping(value = "/user/{userId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteUser(@PathVariable("userId") String strUserId) throws ThingsboardException {
-        checkParameter("userId", strUserId);
+    public void deleteUser(@PathVariable(USER_ID) String strUserId) throws ThingsboardException {
+        checkParameter(USER_ID, strUserId);
         try {
             UserId userId = new UserId(toUUID(strUserId));
             checkUserId(userId);

application/src/main/java/org/thingsboard/server/controller/plugin/PluginApiController.java

@@ -47,12 +47,6 @@ import javax.servlet.http.HttpServletRequest;
 @Slf4j
 public class PluginApiController extends BaseController {
 
-    @Autowired
-    private ActorService actorService;
-
-    @Autowired
-    private PluginService pluginService;
-
     @SuppressWarnings("rawtypes")
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/{pluginToken}/**")

application/src/main/java/org/thingsboard/server/install/ThingsboardInstallService.java

@@ -28,7 +28,6 @@ import org.thingsboard.server.service.install.DatabaseSchemaService;
 import org.thingsboard.server.service.install.DatabaseUpgradeService;
 import org.thingsboard.server.service.install.SystemDataLoaderService;
 
-import java.nio.file.Files;
 import java.nio.file.Paths;
 
 @Service
@@ -69,7 +68,7 @@ public class ThingsboardInstallService {
                 log.info("Starting ThingsBoard Upgrade from version {} ...", upgradeFromVersion);
 
                 switch (upgradeFromVersion) {
-                    case "1.2.3":
+                    case "1.2.3": //NOSONAR, Need to execute gradual upgrade starting from upgradeFromVersion
                         log.info("Upgrading ThingsBoard from version 1.2.3 to 1.3.0 ...");
 
                         databaseUpgradeService.upgradeDatabase(upgradeFromVersion);
@@ -115,7 +114,7 @@ public class ThingsboardInstallService {
                 if (this.dataDir == null) {
                     throw new RuntimeException("'install.data_dir' property should specified!");
                 }
-                if (!Files.isDirectory(Paths.get(this.dataDir))) {
+                if (!Paths.get(this.dataDir).toFile().isDirectory()) {
                     throw new RuntimeException("'install.data_dir' property value is not a valid directory!");
                 }
 

application/src/main/java/org/thingsboard/server/service/cluster/discovery/DummyDiscoveryService.java

@@ -45,12 +45,12 @@ public class DummyDiscoveryService implements DiscoveryService {
 
     @Override
     public void publishCurrentServer() {
-
+        //Do nothing
     }
 
     @Override
     public void unpublishCurrentServer() {
-
+        //Do nothing
     }
 
     @Override

application/src/main/java/org/thingsboard/server/service/cluster/discovery/ZkDiscoveryService.java

@@ -202,6 +202,8 @@ public class ZkDiscoveryService implements DiscoveryService, PathChildrenCacheLi
             case CHILD_REMOVED:
                 listeners.forEach(listener -> listener.onServerRemoved(instance));
                 break;
+            default:
+                break;
         }
     }
 }

application/src/main/java/org/thingsboard/server/service/cluster/rpc/GrpcSession.java

@@ -29,7 +29,7 @@ import java.util.UUID;
  */
 @Data
 @Slf4j
-final public class GrpcSession implements Closeable {
+public final class GrpcSession implements Closeable {
     private final UUID sessionId;
     private final boolean client;
     private final GrpcSessionListener listener;
@@ -59,36 +59,14 @@ final public class GrpcSession implements Closeable {
         this.inputStream = new StreamObserver<ClusterAPIProtos.ToRpcServerMessage>() {
             @Override
             public void onNext(ClusterAPIProtos.ToRpcServerMessage msg) {
-                if (!connected) {
-                    if (msg.hasConnectMsg()) {
-                        connected = true;
-                        ClusterAPIProtos.ServerAddress rpcAddress = msg.getConnectMsg().getServerAddress();
-                        remoteServer = new ServerAddress(rpcAddress.getHost(), rpcAddress.getPort());
-                        listener.onConnected(GrpcSession.this);
-                    }
+                if (!connected && msg.hasConnectMsg()) {
+                    connected = true;
+                    ClusterAPIProtos.ServerAddress rpcAddress = msg.getConnectMsg().getServerAddress();
+                    remoteServer = new ServerAddress(rpcAddress.getHost(), rpcAddress.getPort());
+                    listener.onConnected(GrpcSession.this);
                 }
                 if (connected) {
-                    if (msg.hasToPluginRpcMsg()) {
-                        listener.onToPluginRpcMsg(GrpcSession.this, msg.getToPluginRpcMsg());
-                    }
-                    if (msg.hasToDeviceActorRpcMsg()) {
-                        listener.onToDeviceActorRpcMsg(GrpcSession.this, msg.getToDeviceActorRpcMsg());
-                    }
-                    if (msg.hasToDeviceSessionActorRpcMsg()) {
-                        listener.onToDeviceSessionActorRpcMsg(GrpcSession.this, msg.getToDeviceSessionActorRpcMsg());
-                    }
-                    if (msg.hasToDeviceActorNotificationRpcMsg()) {
-                        listener.onToDeviceActorNotificationRpcMsg(GrpcSession.this, msg.getToDeviceActorNotificationRpcMsg());
-                    }
-                    if (msg.hasToDeviceRpcRequestRpcMsg()) {
-                        listener.onToDeviceRpcRequestRpcMsg(GrpcSession.this, msg.getToDeviceRpcRequestRpcMsg());
-                    }
-                    if (msg.hasToPluginRpcResponseRpcMsg()) {
-                        listener.onFromDeviceRpcResponseRpcMsg(GrpcSession.this, msg.getToPluginRpcResponseRpcMsg());
-                    }
-                    if (msg.hasToAllNodesRpcMsg()) {
-                        listener.onToAllNodesRpcMessage(GrpcSession.this, msg.getToAllNodesRpcMsg());
-                    }
+                    handleToRpcServerMessage(msg);
                 }
             }
 
@@ -105,6 +83,30 @@ final public class GrpcSession implements Closeable {
         };
     }
 
+    private void handleToRpcServerMessage(ClusterAPIProtos.ToRpcServerMessage msg) {
+        if (msg.hasToPluginRpcMsg()) {
+            listener.onToPluginRpcMsg(GrpcSession.this, msg.getToPluginRpcMsg());
+        }
+        if (msg.hasToDeviceActorRpcMsg()) {
+            listener.onToDeviceActorRpcMsg(GrpcSession.this, msg.getToDeviceActorRpcMsg());
+        }
+        if (msg.hasToDeviceSessionActorRpcMsg()) {
+            listener.onToDeviceSessionActorRpcMsg(GrpcSession.this, msg.getToDeviceSessionActorRpcMsg());
+        }
+        if (msg.hasToDeviceActorNotificationRpcMsg()) {
+            listener.onToDeviceActorNotificationRpcMsg(GrpcSession.this, msg.getToDeviceActorNotificationRpcMsg());
+        }
+        if (msg.hasToDeviceRpcRequestRpcMsg()) {
+            listener.onToDeviceRpcRequestRpcMsg(GrpcSession.this, msg.getToDeviceRpcRequestRpcMsg());
+        }
+        if (msg.hasToPluginRpcResponseRpcMsg()) {
+            listener.onFromDeviceRpcResponseRpcMsg(GrpcSession.this, msg.getToPluginRpcResponseRpcMsg());
+        }
+        if (msg.hasToAllNodesRpcMsg()) {
+            listener.onToAllNodesRpcMessage(GrpcSession.this, msg.getToAllNodesRpcMsg());
+        }
+    }
+
     public void initOutputStream() {
         if (client) {
             listener.onConnected(GrpcSession.this);

application/src/main/java/org/thingsboard/server/service/component/AnnotationComponentDiscoveryService.java

@@ -79,78 +79,83 @@ public class AnnotationComponentDiscoveryService implements ComponentDiscoverySe
     private List<ComponentDescriptor> persist(Set<BeanDefinition> filterDefs, ComponentType type) {
         List<ComponentDescriptor> result = new ArrayList<>();
         for (BeanDefinition def : filterDefs) {
-            ComponentDescriptor scannedComponent = new ComponentDescriptor();
-            String clazzName = def.getBeanClassName();
-            try {
-                scannedComponent.setType(type);
-                Class<?> clazz = Class.forName(clazzName);
-                String descriptorResourceName;
-                switch (type) {
-                    case FILTER:
-                        Filter filterAnnotation = clazz.getAnnotation(Filter.class);
-                        scannedComponent.setName(filterAnnotation.name());
-                        scannedComponent.setScope(filterAnnotation.scope());
-                        descriptorResourceName = filterAnnotation.descriptor();
-                        break;
-                    case PROCESSOR:
-                        Processor processorAnnotation = clazz.getAnnotation(Processor.class);
-                        scannedComponent.setName(processorAnnotation.name());
-                        scannedComponent.setScope(processorAnnotation.scope());
-                        descriptorResourceName = processorAnnotation.descriptor();
-                        break;
-                    case ACTION:
-                        Action actionAnnotation = clazz.getAnnotation(Action.class);
-                        scannedComponent.setName(actionAnnotation.name());
-                        scannedComponent.setScope(actionAnnotation.scope());
-                        descriptorResourceName = actionAnnotation.descriptor();
-                        break;
-                    case PLUGIN:
-                        Plugin pluginAnnotation = clazz.getAnnotation(Plugin.class);
-                        scannedComponent.setName(pluginAnnotation.name());
-                        scannedComponent.setScope(pluginAnnotation.scope());
-                        descriptorResourceName = pluginAnnotation.descriptor();
-                        for (Class<?> actionClazz : pluginAnnotation.actions()) {
-                            ComponentDescriptor actionComponent = getComponent(actionClazz.getName())
-                                    .orElseThrow(() -> {
-                                        log.error("Can't initialize plugin {}, due to missing action {}!", def.getBeanClassName(), actionClazz.getName());
-                                        return new ClassNotFoundException("Action: " + actionClazz.getName() + "is missing!");
-                                    });
-                            if (actionComponent.getType() != ComponentType.ACTION) {
-                                log.error("Plugin {} action {} has wrong component type!", def.getBeanClassName(), actionClazz.getName(), actionComponent.getType());
-                                throw new RuntimeException("Plugin " + def.getBeanClassName() + "action " + actionClazz.getName() + " has wrong component type!");
-                            }
-                        }
-                        scannedComponent.setActions(Arrays.stream(pluginAnnotation.actions()).map(action -> action.getName()).collect(Collectors.joining(",")));
-                        break;
-                    default:
-                        throw new RuntimeException(type + " is not supported yet!");
-                }
-                scannedComponent.setConfigurationDescriptor(mapper.readTree(
-                        Resources.toString(Resources.getResource(descriptorResourceName), Charsets.UTF_8)));
-                scannedComponent.setClazz(clazzName);
-                log.info("Processing scanned component: {}", scannedComponent);
-            } catch (Exception e) {
-                log.error("Can't initialize component {}, due to {}", def.getBeanClassName(), e.getMessage(), e);
-                throw new RuntimeException(e);
-            }
-            ComponentDescriptor persistedComponent = componentDescriptorService.findByClazz(clazzName);
-            if (persistedComponent == null) {
-                log.info("Persisting new component: {}", scannedComponent);
-                scannedComponent = componentDescriptorService.saveComponent(scannedComponent);
-            } else if (scannedComponent.equals(persistedComponent)) {
-                log.info("Component is already persisted: {}", persistedComponent);
-                scannedComponent = persistedComponent;
-            } else {
-                log.info("Component {} will be updated to {}", persistedComponent, scannedComponent);
-                componentDescriptorService.deleteByClazz(persistedComponent.getClazz());
-                scannedComponent.setId(persistedComponent.getId());
-                scannedComponent = componentDescriptorService.saveComponent(scannedComponent);
-            }
+            ComponentDescriptor scannedComponent = scanAndPersistComponent(def, type);
             result.add(scannedComponent);
         }
         return result;
     }
 
+    private ComponentDescriptor scanAndPersistComponent(BeanDefinition def, ComponentType type) {
+        ComponentDescriptor scannedComponent = new ComponentDescriptor();
+        String clazzName = def.getBeanClassName();
+        try {
+            scannedComponent.setType(type);
+            Class<?> clazz = Class.forName(clazzName);
+            String descriptorResourceName;
+            switch (type) {
+                case FILTER:
+                    Filter filterAnnotation = clazz.getAnnotation(Filter.class);
+                    scannedComponent.setName(filterAnnotation.name());
+                    scannedComponent.setScope(filterAnnotation.scope());
+                    descriptorResourceName = filterAnnotation.descriptor();
+                    break;
+                case PROCESSOR:
+                    Processor processorAnnotation = clazz.getAnnotation(Processor.class);
+                    scannedComponent.setName(processorAnnotation.name());
+                    scannedComponent.setScope(processorAnnotation.scope());
+                    descriptorResourceName = processorAnnotation.descriptor();
+                    break;
+                case ACTION:
+                    Action actionAnnotation = clazz.getAnnotation(Action.class);
+                    scannedComponent.setName(actionAnnotation.name());
+                    scannedComponent.setScope(actionAnnotation.scope());
+                    descriptorResourceName = actionAnnotation.descriptor();
+                    break;
+                case PLUGIN:
+                    Plugin pluginAnnotation = clazz.getAnnotation(Plugin.class);
+                    scannedComponent.setName(pluginAnnotation.name());
+                    scannedComponent.setScope(pluginAnnotation.scope());
+                    descriptorResourceName = pluginAnnotation.descriptor();
+                    for (Class<?> actionClazz : pluginAnnotation.actions()) {
+                        ComponentDescriptor actionComponent = getComponent(actionClazz.getName())
+                                .orElseThrow(() -> {
+                                    log.error("Can't initialize plugin {}, due to missing action {}!", def.getBeanClassName(), actionClazz.getName());
+                                    return new ClassNotFoundException("Action: " + actionClazz.getName() + "is missing!");
+                                });
+                        if (actionComponent.getType() != ComponentType.ACTION) {
+                            log.error("Plugin {} action {} has wrong component type!", def.getBeanClassName(), actionClazz.getName(), actionComponent.getType());
+                            throw new RuntimeException("Plugin " + def.getBeanClassName() + "action " + actionClazz.getName() + " has wrong component type!");
+                        }
+                    }
+                    scannedComponent.setActions(Arrays.stream(pluginAnnotation.actions()).map(action -> action.getName()).collect(Collectors.joining(",")));
+                    break;
+                default:
+                    throw new RuntimeException(type + " is not supported yet!");
+            }
+            scannedComponent.setConfigurationDescriptor(mapper.readTree(
+                    Resources.toString(Resources.getResource(descriptorResourceName), Charsets.UTF_8)));
+            scannedComponent.setClazz(clazzName);
+            log.info("Processing scanned component: {}", scannedComponent);
+        } catch (Exception e) {
+            log.error("Can't initialize component {}, due to {}", def.getBeanClassName(), e.getMessage(), e);
+            throw new RuntimeException(e);
+        }
+        ComponentDescriptor persistedComponent = componentDescriptorService.findByClazz(clazzName);
+        if (persistedComponent == null) {
+            log.info("Persisting new component: {}", scannedComponent);
+            scannedComponent = componentDescriptorService.saveComponent(scannedComponent);
+        } else if (scannedComponent.equals(persistedComponent)) {
+            log.info("Component is already persisted: {}", persistedComponent);
+            scannedComponent = persistedComponent;
+        } else {
+            log.info("Component {} will be updated to {}", persistedComponent, scannedComponent);
+            componentDescriptorService.deleteByClazz(persistedComponent.getClazz());
+            scannedComponent.setId(persistedComponent.getId());
+            scannedComponent = componentDescriptorService.saveComponent(scannedComponent);
+        }
+        return scannedComponent;
+    }
+
     private Set<BeanDefinition> getBeanDefinitions(Class<? extends Annotation> componentType) {
         ClassPathScanningCandidateComponentProvider scanner = new ClassPathScanningCandidateComponentProvider(false);
         scanner.addIncludeFilter(new AnnotationTypeFilter(componentType));

application/src/main/java/org/thingsboard/server/service/install/CassandraDatabaseUpgradeService.java

@@ -40,6 +40,12 @@ import java.util.List;
 public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
 
     private static final String SCHEMA_UPDATE_CQL = "schema_update.cql";
+    public static final String DEVICE = "device";
+    public static final String TENANT_ID = "tenant_id";
+    public static final String CUSTOMER_ID = "customer_id";
+    public static final String SEARCH_TEXT = "search_text";
+    public static final String ADDITIONAL_INFO = "additional_info";
+    public static final String ASSET = "asset";
 
     @Value("${install.data_dir}")
     private String dataDir;
@@ -63,22 +69,22 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
                 KeyspaceMetadata ks = cluster.getCluster().getMetadata().getKeyspace(cluster.getKeyspaceName());
 
                 log.info("Dumping devices ...");
-                Path devicesDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), "device",
-                        new String[]{"id", "tenant_id", "customer_id", "name", "search_text", "additional_info", "type"},
+                Path devicesDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), DEVICE,
+                        new String[]{"id", TENANT_ID, CUSTOMER_ID, "name", SEARCH_TEXT, ADDITIONAL_INFO, "type"},
                         new String[]{"", "", "", "", "", "", "default"},
                         "tb-devices");
                 log.info("Devices dumped.");
 
                 log.info("Dumping assets ...");
-                Path assetsDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), "asset",
-                        new String[]{"id", "tenant_id", "customer_id", "name", "search_text", "additional_info", "type"},
+                Path assetsDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), ASSET,
+                        new String[]{"id", TENANT_ID, CUSTOMER_ID, "name", SEARCH_TEXT, ADDITIONAL_INFO, "type"},
                         new String[]{"", "", "", "", "", "", "default"},
                         "tb-assets");
                 log.info("Assets dumped.");
 
                 log.info("Dumping relations ...");
                 Path relationsDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), "relation",
-                        new String[]{"from_id", "from_type", "to_id", "to_type", "relation_type", "additional_info", "relation_type_group"},
+                        new String[]{"from_id", "from_type", "to_id", "to_type", "relation_type", ADDITIONAL_INFO, "relation_type_group"},
                         new String[]{"", "", "", "", "", "", "COMMON"},
                         "tb-relations");
                 log.info("Relations dumped.");
@@ -92,15 +98,15 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
 
                 log.info("Restoring devices ...");
                 if (devicesDump != null) {
-                    CassandraDbHelper.loadCf(ks, cluster.getSession(), "device",
-                            new String[]{"id", "tenant_id", "customer_id", "name", "search_text", "additional_info", "type"}, devicesDump);
+                    CassandraDbHelper.loadCf(ks, cluster.getSession(), DEVICE,
+                            new String[]{"id", TENANT_ID, CUSTOMER_ID, "name", SEARCH_TEXT, ADDITIONAL_INFO, "type"}, devicesDump);
                     Files.deleteIfExists(devicesDump);
                 }
                 log.info("Devices restored.");
 
                 log.info("Dumping device types ...");
-                Path deviceTypesDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), "device",
-                        new String[]{"tenant_id", "type"},
+                Path deviceTypesDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), DEVICE,
+                        new String[]{TENANT_ID, "type"},
                         new String[]{"", ""},
                         "tb-device-types");
                 if (deviceTypesDump != null) {
@@ -110,22 +116,22 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
                 log.info("Loading device types ...");
                 if (deviceTypesDump != null) {
                     CassandraDbHelper.loadCf(ks, cluster.getSession(), "entity_subtype",
-                            new String[]{"tenant_id", "type", "entity_type"}, deviceTypesDump);
+                            new String[]{TENANT_ID, "type", "entity_type"}, deviceTypesDump);
                     Files.deleteIfExists(deviceTypesDump);
                 }
                 log.info("Device types loaded.");
 
                 log.info("Restoring assets ...");
                 if (assetsDump != null) {
-                    CassandraDbHelper.loadCf(ks, cluster.getSession(), "asset",
-                            new String[]{"id", "tenant_id", "customer_id", "name", "search_text", "additional_info", "type"}, assetsDump);
+                    CassandraDbHelper.loadCf(ks, cluster.getSession(), ASSET,
+                            new String[]{"id", TENANT_ID, CUSTOMER_ID, "name", SEARCH_TEXT, ADDITIONAL_INFO, "type"}, assetsDump);
                     Files.deleteIfExists(assetsDump);
                 }
                 log.info("Assets restored.");
 
                 log.info("Dumping asset types ...");
-                Path assetTypesDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), "asset",
-                        new String[]{"tenant_id", "type"},
+                Path assetTypesDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), ASSET,
+                        new String[]{TENANT_ID, "type"},
                         new String[]{"", ""},
                         "tb-asset-types");
                 if (assetTypesDump != null) {
@@ -135,7 +141,7 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
                 log.info("Loading asset types ...");
                 if (assetTypesDump != null) {
                     CassandraDbHelper.loadCf(ks, cluster.getSession(), "entity_subtype",
-                            new String[]{"tenant_id", "type", "entity_type"}, assetTypesDump);
+                            new String[]{TENANT_ID, "type", "entity_type"}, assetTypesDump);
                     Files.deleteIfExists(assetTypesDump);
                 }
                 log.info("Asset types loaded.");
@@ -143,7 +149,7 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
                 log.info("Restoring relations ...");
                 if (relationsDump != null) {
                     CassandraDbHelper.loadCf(ks, cluster.getSession(), "relation",
-                            new String[]{"from_id", "from_type", "to_id", "to_type", "relation_type", "additional_info", "relation_type_group"}, relationsDump);
+                            new String[]{"from_id", "from_type", "to_id", "to_type", "relation_type", ADDITIONAL_INFO, "relation_type_group"}, relationsDump);
                     Files.deleteIfExists(relationsDump);
                 }
                 log.info("Relations restored.");

application/src/main/java/org/thingsboard/server/service/install/DefaultSystemDataLoaderService.java

@@ -70,6 +70,9 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
     private static final String DASHBOARDS_DIR = "dashboards";
 
     private static final ObjectMapper objectMapper = new ObjectMapper();
+    public static final String JSON_EXT = ".json";
+    public static final String CUSTOMER_CRED = "customer";
+    public static final String DEFAULT_DEVICE_TYPE = "default";
 
     @Value("${install.data_dir}")
     private String dataDir;
@@ -147,7 +150,7 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
     @Override
     public void loadSystemWidgets() throws Exception {
         Path widgetBundlesDir = Paths.get(dataDir, JSON_DIR, SYSTEM_DIR, WIDGET_BUNDLES_DIR);
-        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(widgetBundlesDir, path -> path.toString().endsWith(".json"))) {
+        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(widgetBundlesDir, path -> path.toString().endsWith(JSON_EXT))) {
             dirStream.forEach(
                     path -> {
                         try {
@@ -208,21 +211,21 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
         customerC.setTenantId(demoTenant.getId());
         customerC.setTitle("Customer C");
         customerC = customerService.saveCustomer(customerC);
-        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerA.getId(), "customer@thingsboard.org", "customer");
-        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerA.getId(), "customerA@thingsboard.org", "customer");
-        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerB.getId(), "customerB@thingsboard.org", "customer");
-        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerC.getId(), "customerC@thingsboard.org", "customer");
-
-        createDevice(demoTenant.getId(), customerA.getId(), "default", "Test Device A1", "A1_TEST_TOKEN", null);
-        createDevice(demoTenant.getId(), customerA.getId(), "default", "Test Device A2", "A2_TEST_TOKEN", null);
-        createDevice(demoTenant.getId(), customerA.getId(), "default", "Test Device A3", "A3_TEST_TOKEN", null);
-        createDevice(demoTenant.getId(), customerB.getId(), "default", "Test Device B1", "B1_TEST_TOKEN", null);
-        createDevice(demoTenant.getId(), customerC.getId(), "default", "Test Device C1", "C1_TEST_TOKEN", null);
-
-        createDevice(demoTenant.getId(), null, "default", "DHT11 Demo Device", "DHT11_DEMO_TOKEN", "Demo device that is used in sample " +
+        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerA.getId(), "customer@thingsboard.org", CUSTOMER_CRED);
+        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerA.getId(), "customerA@thingsboard.org", CUSTOMER_CRED);
+        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerB.getId(), "customerB@thingsboard.org", CUSTOMER_CRED);
+        createUser(Authority.CUSTOMER_USER, demoTenant.getId(), customerC.getId(), "customerC@thingsboard.org", CUSTOMER_CRED);
+
+        createDevice(demoTenant.getId(), customerA.getId(), DEFAULT_DEVICE_TYPE, "Test Device A1", "A1_TEST_TOKEN", null);
+        createDevice(demoTenant.getId(), customerA.getId(), DEFAULT_DEVICE_TYPE, "Test Device A2", "A2_TEST_TOKEN", null);
+        createDevice(demoTenant.getId(), customerA.getId(), DEFAULT_DEVICE_TYPE, "Test Device A3", "A3_TEST_TOKEN", null);
+        createDevice(demoTenant.getId(), customerB.getId(), DEFAULT_DEVICE_TYPE, "Test Device B1", "B1_TEST_TOKEN", null);
+        createDevice(demoTenant.getId(), customerC.getId(), DEFAULT_DEVICE_TYPE, "Test Device C1", "C1_TEST_TOKEN", null);
+
+        createDevice(demoTenant.getId(), null, DEFAULT_DEVICE_TYPE, "DHT11 Demo Device", "DHT11_DEMO_TOKEN", "Demo device that is used in sample " +
                 "applications that upload data from DHT11 temperature and humidity sensor");
 
-        createDevice(demoTenant.getId(), null, "default", "Raspberry Pi Demo Device", "RASPBERRY_PI_DEMO_TOKEN", "Demo device that is used in " +
+        createDevice(demoTenant.getId(), null, DEFAULT_DEVICE_TYPE, "Raspberry Pi Demo Device", "RASPBERRY_PI_DEMO_TOKEN", "Demo device that is used in " +
                 "Raspberry Pi GPIO control sample application");
 
         loadPlugins(Paths.get(dataDir, JSON_DIR, DEMO_DIR, PLUGINS_DIR), demoTenant.getId());
@@ -281,7 +284,7 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
     }
 
     private void loadPlugins(Path pluginsDir, TenantId tenantId) throws Exception{
-        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(pluginsDir, path -> path.toString().endsWith(".json"))) {
+        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(pluginsDir, path -> path.toString().endsWith(JSON_EXT))) {
             dirStream.forEach(
                     path -> {
                         try {
@@ -305,7 +308,7 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
     }
 
     private void loadRules(Path rulesDir, TenantId tenantId) throws Exception {
-        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(rulesDir, path -> path.toString().endsWith(".json"))) {
+        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(rulesDir, path -> path.toString().endsWith(JSON_EXT))) {
             dirStream.forEach(
                     path -> {
                         try {
@@ -329,7 +332,7 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
     }
 
     private void loadDashboards(Path dashboardsDir, TenantId tenantId, CustomerId customerId) throws Exception {
-        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(dashboardsDir, path -> path.toString().endsWith(".json"))) {
+        try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(dashboardsDir, path -> path.toString().endsWith(JSON_EXT))) {
             dirStream.forEach(
                     path -> {
                         try {

application/src/main/java/org/thingsboard/server/service/install/cql/CQLStatementsParser.java

@@ -44,7 +44,7 @@ public class CQLStatementsParser {
     public CQLStatementsParser(Path cql) throws IOException {
         try {
             List<String> lines = Files.readAllLines(cql);
-            StringBuffer t = new StringBuffer();
+            StringBuilder t = new StringBuilder();
             for (String l : lines) {
                 t.append(l.trim());
                 t.append('\n');
@@ -68,36 +68,14 @@ public class CQLStatementsParser {
 
     private void parseStatements() {
         this.statements = new ArrayList<>();
-        StringBuffer statementUnderConstruction = new StringBuffer();
+        StringBuilder statementUnderConstruction = new StringBuilder();
 
         char c;
         while ((c = getChar()) != 0) {
             switch (state) {
                 case DEFAULT:
-                    if (c == '/' && peekAhead() == '/') {
-                        state = State.INSINGLELINECOMMENT;
-                        advance();
-                    } else if (c == '-' && peekAhead() == '-') {
-                        state = State.INSINGLELINECOMMENT;
-                        advance();
-                    } else if (c == '/' && peekAhead() == '*') {
-                        state = State.INMULTILINECOMMENT;
-                        advance();
-                    } else if (c == '\n') {
-                        statementUnderConstruction.append(' ');
-                    } else {
-                        statementUnderConstruction.append(c);
-                        if (c == '\"') {
-                            state = State.INQUOTESTRING;
-                        } else if (c == '\'') {
-                            state = State.INSQUOTESTRING;
-                        } else if (c == ';') {
-                            statements.add(statementUnderConstruction.toString().trim());
-                            statementUnderConstruction.setLength(0);
-                        }
-                    }
+                    processDefaultState(c, statementUnderConstruction);
                     break;
-
                 case INSINGLELINECOMMENT:
                     if (c == '\n') {
                         state = State.DEFAULT;
@@ -112,25 +90,10 @@ public class CQLStatementsParser {
                     break;
 
                 case INQUOTESTRING:
-                    statementUnderConstruction.append(c);
-                    if (c == '"') {
-                        if (peekAhead() == '"') {
-                            statementUnderConstruction.append(getChar());
-                        } else {
-                            state = State.DEFAULT;
-                        }
-                    }
+                    processInQuoteStringState(c, statementUnderConstruction);
                     break;
-
                 case INSQUOTESTRING:
-                    statementUnderConstruction.append(c);
-                    if (c == '\'') {
-                        if (peekAhead() == '\'') {
-                            statementUnderConstruction.append(getChar());
-                        } else {
-                            state = State.DEFAULT;
-                        }
-                    }
+                    processInSQuoteStringState(c, statementUnderConstruction);
                     break;
             }
 
@@ -141,6 +104,50 @@ public class CQLStatementsParser {
         }
     }
 
+    private void processDefaultState(char c, StringBuilder statementUnderConstruction) {
+        if ((c == '/' && peekAhead() == '/') || (c == '-' && peekAhead() == '-')) {
+            state = State.INSINGLELINECOMMENT;
+            advance();
+        } else if (c == '/' && peekAhead() == '*') {
+            state = State.INMULTILINECOMMENT;
+            advance();
+        } else if (c == '\n') {
+            statementUnderConstruction.append(' ');
+        } else {
+            statementUnderConstruction.append(c);
+            if (c == '\"') {
+                state = State.INQUOTESTRING;
+            } else if (c == '\'') {
+                state = State.INSQUOTESTRING;
+            } else if (c == ';') {
+                statements.add(statementUnderConstruction.toString().trim());
+                statementUnderConstruction.setLength(0);
+            }
+        }
+    }
+
+    private void processInQuoteStringState(char c, StringBuilder statementUnderConstruction) {
+        statementUnderConstruction.append(c);
+        if (c == '"') {
+            if (peekAhead() == '"') {
+                statementUnderConstruction.append(getChar());
+            } else {
+                state = State.DEFAULT;
+            }
+        }
+    }
+
+    private void processInSQuoteStringState(char c, StringBuilder statementUnderConstruction) {
+        statementUnderConstruction.append(c);
+        if (c == '\'') {
+            if (peekAhead() == '\'') {
+                statementUnderConstruction.append(getChar());
+            } else {
+                state = State.DEFAULT;
+            }
+        }
+    }
+
     private char getChar() {
         if (pos < text.length())
             return text.charAt(pos++);

application/src/main/java/org/thingsboard/server/service/mail/DefaultMailService.java

@@ -44,6 +44,9 @@ import java.util.Properties;
 @Slf4j
 public class DefaultMailService implements MailService {
 
+    public static final String MAIL_PROP = "mail.";
+    public static final String TARGET_EMAIL = "targetEmail";
+    public static final String UTF_8 = "UTF-8";
     @Autowired
     private MessageSource messages;
     
@@ -89,11 +92,11 @@ public class DefaultMailService implements MailService {
         Properties javaMailProperties = new Properties();
         String protocol = jsonConfig.get("smtpProtocol").asText();
         javaMailProperties.put("mail.transport.protocol", protocol);
-        javaMailProperties.put("mail." + protocol + ".host", jsonConfig.get("smtpHost").asText());
-        javaMailProperties.put("mail." + protocol + ".port", jsonConfig.get("smtpPort").asText());
-        javaMailProperties.put("mail." + protocol + ".timeout", jsonConfig.get("timeout").asText());
-        javaMailProperties.put("mail." + protocol + ".auth", String.valueOf(StringUtils.isNotEmpty(jsonConfig.get("username").asText())));
-        javaMailProperties.put("mail." + protocol + ".starttls.enable", jsonConfig.get("enableTls"));
+        javaMailProperties.put(MAIL_PROP + protocol + ".host", jsonConfig.get("smtpHost").asText());
+        javaMailProperties.put(MAIL_PROP + protocol + ".port", jsonConfig.get("smtpPort").asText());
+        javaMailProperties.put(MAIL_PROP + protocol + ".timeout", jsonConfig.get("timeout").asText());
+        javaMailProperties.put(MAIL_PROP + protocol + ".auth", String.valueOf(StringUtils.isNotEmpty(jsonConfig.get("username").asText())));
+        javaMailProperties.put(MAIL_PROP + protocol + ".starttls.enable", jsonConfig.get("enableTls"));
         return javaMailProperties;
     }
     
@@ -117,10 +120,10 @@ public class DefaultMailService implements MailService {
         String subject = messages.getMessage("test.message.subject", null, Locale.US);
         
         Map<String, Object> model = new HashMap<String, Object>();
-        model.put("targetEmail", email);
+        model.put(TARGET_EMAIL, email);
         
         String message = VelocityEngineUtils.mergeTemplateIntoString(this.engine,
-                "test.vm", "UTF-8", model);
+                "test.vm", UTF_8, model);
         
         sendMail(testMailSender, mailFrom, email, subject, message); 
     }
@@ -132,10 +135,10 @@ public class DefaultMailService implements MailService {
         
         Map<String, Object> model = new HashMap<String, Object>();
         model.put("activationLink", activationLink);
-        model.put("targetEmail", email);
+        model.put(TARGET_EMAIL, email);
         
         String message = VelocityEngineUtils.mergeTemplateIntoString(this.engine,
-                "activation.vm", "UTF-8", model);
+                "activation.vm", UTF_8, model);
         
         sendMail(mailSender, mailFrom, email, subject, message); 
     }
@@ -147,10 +150,10 @@ public class DefaultMailService implements MailService {
         
         Map<String, Object> model = new HashMap<String, Object>();
         model.put("loginLink", loginLink);
-        model.put("targetEmail", email);
+        model.put(TARGET_EMAIL, email);
         
         String message = VelocityEngineUtils.mergeTemplateIntoString(this.engine,
-                "account.activated.vm", "UTF-8", model);
+                "account.activated.vm", UTF_8, model);
         
         sendMail(mailSender, mailFrom, email, subject, message); 
     }
@@ -162,10 +165,10 @@ public class DefaultMailService implements MailService {
         
         Map<String, Object> model = new HashMap<String, Object>();
         model.put("passwordResetLink", passwordResetLink);
-        model.put("targetEmail", email);
+        model.put(TARGET_EMAIL, email);
         
         String message = VelocityEngineUtils.mergeTemplateIntoString(this.engine,
-                "reset.password.vm", "UTF-8", model);
+                "reset.password.vm", UTF_8, model);
         
         sendMail(mailSender, mailFrom, email, subject, message); 
     }
@@ -177,10 +180,10 @@ public class DefaultMailService implements MailService {
         
         Map<String, Object> model = new HashMap<String, Object>();
         model.put("loginLink", loginLink);
-        model.put("targetEmail", email);
+        model.put(TARGET_EMAIL, email);
         
         String message = VelocityEngineUtils.mergeTemplateIntoString(this.engine,
-                "password.was.reset.vm", "UTF-8", model);
+                "password.was.reset.vm", UTF_8, model);
         
         sendMail(mailSender, mailFrom, email, subject, message); 
     }
@@ -191,7 +194,7 @@ public class DefaultMailService implements MailService {
             String subject, String message) throws ThingsboardException {
         try {
             MimeMessage mimeMsg = mailSender.createMimeMessage();
-            MimeMessageHelper helper = new MimeMessageHelper(mimeMsg, "UTF-8");
+            MimeMessageHelper helper = new MimeMessageHelper(mimeMsg, UTF_8);
             helper.setFrom(mailFrom);
             helper.setTo(email);
             helper.setSubject(subject);

application/src/main/java/org/thingsboard/server/service/security/auth/jwt/RefreshTokenProcessingFilter.java

@@ -16,6 +16,7 @@
 package org.thingsboard.server.service.security.auth.jwt;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -37,8 +38,8 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 
+@Slf4j
 public class RefreshTokenProcessingFilter extends AbstractAuthenticationProcessingFilter {
-    private static Logger logger = LoggerFactory.getLogger(RefreshTokenProcessingFilter.class);
 
     private final AuthenticationSuccessHandler successHandler;
     private final AuthenticationFailureHandler failureHandler;
@@ -57,8 +58,8 @@ public class RefreshTokenProcessingFilter extends AbstractAuthenticationProcessi
     public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
             throws AuthenticationException, IOException, ServletException {
         if (!HttpMethod.POST.name().equals(request.getMethod())) {
-            if(logger.isDebugEnabled()) {
-                logger.debug("Authentication method not supported. Request method: " + request.getMethod());
+            if(log.isDebugEnabled()) {
+                log.debug("Authentication method not supported. Request method: " + request.getMethod());
             }
             throw new AuthMethodNotSupportedException("Authentication method not supported");
         }

application/src/main/java/org/thingsboard/server/service/security/auth/rest/RestLoginProcessingFilter.java

@@ -16,6 +16,7 @@
 package org.thingsboard.server.service.security.auth.rest;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -37,8 +38,8 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 
+@Slf4j
 public class RestLoginProcessingFilter extends AbstractAuthenticationProcessingFilter {
-    private static Logger logger = LoggerFactory.getLogger(RestLoginProcessingFilter.class);
 
     private final AuthenticationSuccessHandler successHandler;
     private final AuthenticationFailureHandler failureHandler;
@@ -57,8 +58,8 @@ public class RestLoginProcessingFilter extends AbstractAuthenticationProcessingF
     public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
             throws AuthenticationException, IOException, ServletException {
         if (!HttpMethod.POST.name().equals(request.getMethod())) {
-            if(logger.isDebugEnabled()) {
-                logger.debug("Authentication method not supported. Request method: " + request.getMethod());
+            if(log.isDebugEnabled()) {
+                log.debug("Authentication method not supported. Request method: " + request.getMethod());
             }
             throw new AuthMethodNotSupportedException("Authentication method not supported");
         }

application/src/main/java/org/thingsboard/server/service/security/auth/rest/RestPublicLoginProcessingFilter.java

@@ -16,6 +16,7 @@
 package org.thingsboard.server.service.security.auth.rest;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -37,8 +38,8 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 
+@Slf4j
 public class RestPublicLoginProcessingFilter extends AbstractAuthenticationProcessingFilter {
-    private static Logger logger = LoggerFactory.getLogger(RestPublicLoginProcessingFilter.class);
 
     private final AuthenticationSuccessHandler successHandler;
     private final AuthenticationFailureHandler failureHandler;
@@ -57,8 +58,8 @@ public class RestPublicLoginProcessingFilter extends AbstractAuthenticationProce
     public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
             throws AuthenticationException, IOException, ServletException {
         if (!HttpMethod.POST.name().equals(request.getMethod())) {
-            if(logger.isDebugEnabled()) {
-                logger.debug("Authentication method not supported. Request method: " + request.getMethod());
+            if(log.isDebugEnabled()) {
+                log.debug("Authentication method not supported. Request method: " + request.getMethod());
             }
             throw new AuthMethodNotSupportedException("Authentication method not supported");
         }

application/src/main/java/org/thingsboard/server/service/security/model/SecurityUser.java

@@ -46,7 +46,7 @@ public class SecurityUser extends User {
         this.userPrincipal = userPrincipal;
     }
 
-    public Collection<? extends GrantedAuthority> getAuthorities() {
+    public Collection<GrantedAuthority> getAuthorities() {
         if (authorities == null) {
             authorities = Stream.of(SecurityUser.this.getAuthority())
                     .map(authority -> new SimpleGrantedAuthority(authority.name()))

application/src/main/java/org/thingsboard/server/service/security/model/UserPrincipal.java

@@ -16,7 +16,9 @@
 
 package org.thingsboard.server.service.security.model;
 
-public class UserPrincipal {
+import java.io.Serializable;
+
+public class UserPrincipal implements Serializable {
 
     private final Type type;
     private final String value;

application/src/main/java/org/thingsboard/server/service/security/model/token/AccessJwtToken.java

@@ -21,7 +21,7 @@ import io.jsonwebtoken.Claims;
 public final class AccessJwtToken implements JwtToken {
     private final String rawToken;
     @JsonIgnore
-    private Claims claims;
+    private transient Claims claims;
 
     protected AccessJwtToken(final String token, Claims claims) {
         this.rawToken = token;

application/src/main/java/org/thingsboard/server/service/security/model/token/JwtToken.java

@@ -15,6 +15,8 @@
  */
 package org.thingsboard.server.service.security.model.token;
 
-public interface JwtToken {
+import java.io.Serializable;
+
+public interface JwtToken extends Serializable {
     String getToken();
 }

application/src/main/java/org/thingsboard/server/service/security/model/token/RawAccessJwtToken.java

@@ -21,7 +21,12 @@ import org.slf4j.LoggerFactory;
 import org.springframework.security.authentication.BadCredentialsException;
 import org.thingsboard.server.service.security.exception.JwtExpiredTokenException;
 
-public class RawAccessJwtToken implements JwtToken {
+import java.io.Serializable;
+
+public class RawAccessJwtToken implements JwtToken, Serializable {
+
+    private static final long serialVersionUID = -797397445703066079L;
+
     private static Logger logger = LoggerFactory.getLogger(RawAccessJwtToken.class);
 
     private String token;

application/src/main/java/org/thingsboard/server/service/update/DefaultUpdateService.java

@@ -27,6 +27,7 @@ import org.thingsboard.server.service.update.model.UpdateMessage;
 
 import javax.annotation.PostConstruct;
 import javax.annotation.PreDestroy;
+import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -71,25 +72,34 @@ public class DefaultUpdateService implements UpdateService {
                 if (version == null) {
                     version = "unknown";
                 }
-                Path instanceIdPath = Paths.get(INSTANCE_ID_FILE);
-                if (Files.exists(instanceIdPath)) {
-                    byte[] data = Files.readAllBytes(instanceIdPath);
-                    if (data != null && data.length > 0) {
-                        try {
-                            instanceId = UUID.fromString(new String(data));
-                        } catch (IllegalArgumentException e) {
-                        }
-                    }
-                }
-                if (instanceId == null) {
-                    instanceId = UUID.randomUUID();
-                    Files.write(instanceIdPath, instanceId.toString().getBytes());
-                }
+                instanceId = parseInstanceId();
                 checkUpdatesFuture = scheduler.scheduleAtFixedRate(checkUpdatesRunnable, 0, 1, TimeUnit.HOURS);
-            } catch (Exception e) {}
+            } catch (Exception e) {
+                //Do nothing
+            }
         }
     }
 
+    private UUID parseInstanceId() throws IOException {
+        UUID result = null;
+        Path instanceIdPath = Paths.get(INSTANCE_ID_FILE);
+        if (instanceIdPath.toFile().exists()) {
+            byte[] data = Files.readAllBytes(instanceIdPath);
+            if (data != null && data.length > 0) {
+                try {
+                    result = UUID.fromString(new String(data));
+                } catch (IllegalArgumentException e) {
+                    //Do nothing
+                }
+            }
+        }
+        if (result == null) {
+            result = UUID.randomUUID();
+            Files.write(instanceIdPath, result.toString().getBytes());
+        }
+        return result;
+    }
+
     @PreDestroy
     private void destroy() {
         try {
@@ -97,26 +107,25 @@ public class DefaultUpdateService implements UpdateService {
                 checkUpdatesFuture.cancel(true);
             }
             scheduler.shutdownNow();
-        } catch (Exception e) {}
+        } catch (Exception e) {
+            //Do nothing
+        }
     }
 
-    Runnable checkUpdatesRunnable = new Runnable() {
-        @Override
-        public void run() {
-            try {
-                log.trace("Executing check update method for instanceId [{}], platform [{}] and version [{}]", instanceId, platform, version);
-                ObjectNode request = new ObjectMapper().createObjectNode();
-                request.put(PLATFORM_PARAM, platform);
-                request.put(VERSION_PARAM, version);
-                request.put(INSTANCE_ID_PARAM, instanceId.toString());
-                JsonNode response = restClient.postForObject(UPDATE_SERVER_BASE_URL+"/api/thingsboard/updates", request, JsonNode.class);
-                updateMessage = new UpdateMessage(
-                        response.get("message").asText(),
-                        response.get("updateAvailable").asBoolean()
-                );
-            } catch (Exception e) {
-                log.trace(e.getMessage());
-            }
+    Runnable checkUpdatesRunnable = () -> {
+        try {
+            log.trace("Executing check update method for instanceId [{}], platform [{}] and version [{}]", instanceId, platform, version);
+            ObjectNode request = new ObjectMapper().createObjectNode();
+            request.put(PLATFORM_PARAM, platform);
+            request.put(VERSION_PARAM, version);
+            request.put(INSTANCE_ID_PARAM, instanceId.toString());
+            JsonNode response = restClient.postForObject(UPDATE_SERVER_BASE_URL+"/api/thingsboard/updates", request, JsonNode.class);
+            updateMessage = new UpdateMessage(
+                    response.get("message").asText(),
+                    response.get("updateAvailable").asBoolean()
+            );
+        } catch (Exception e) {
+            log.trace(e.getMessage());
         }
     };
 

common/data/src/main/java/org/thingsboard/server/common/data/AdminSettings.java

@@ -24,7 +24,7 @@ public class AdminSettings extends BaseData<AdminSettingsId> {
     private static final long serialVersionUID = -7670322981725511892L;
     
     private String key;
-    private JsonNode jsonValue;
+    private transient JsonNode jsonValue;
     
     public AdminSettings() {
         super();

common/data/src/main/java/org/thingsboard/server/common/data/ContactBased.java

@@ -15,8 +15,10 @@
  */
 package org.thingsboard.server.common.data;
 
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.id.UUIDBased;
 
+@EqualsAndHashCode(callSuper = true)
 public abstract class ContactBased<I extends UUIDBased> extends SearchTextBased<I> {
     
     private static final long serialVersionUID = 5047448057830660988L;
@@ -114,72 +116,4 @@ public abstract class ContactBased<I extends UUIDBased> extends SearchTextBased<
         this.email = email;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((address == null) ? 0 : address.hashCode());
-        result = prime * result + ((address2 == null) ? 0 : address2.hashCode());
-        result = prime * result + ((city == null) ? 0 : city.hashCode());
-        result = prime * result + ((country == null) ? 0 : country.hashCode());
-        result = prime * result + ((email == null) ? 0 : email.hashCode());
-        result = prime * result + ((phone == null) ? 0 : phone.hashCode());
-        result = prime * result + ((state == null) ? 0 : state.hashCode());
-        result = prime * result + ((zip == null) ? 0 : zip.hashCode());
-        return result;
-    }
-
-    @SuppressWarnings("rawtypes")
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        ContactBased other = (ContactBased) obj;
-        if (address == null) {
-            if (other.address != null)
-                return false;
-        } else if (!address.equals(other.address))
-            return false;
-        if (address2 == null) {
-            if (other.address2 != null)
-                return false;
-        } else if (!address2.equals(other.address2))
-            return false;
-        if (city == null) {
-            if (other.city != null)
-                return false;
-        } else if (!city.equals(other.city))
-            return false;
-        if (country == null) {
-            if (other.country != null)
-                return false;
-        } else if (!country.equals(other.country))
-            return false;
-        if (email == null) {
-            if (other.email != null)
-                return false;
-        } else if (!email.equals(other.email))
-            return false;
-        if (phone == null) {
-            if (other.phone != null)
-                return false;
-        } else if (!phone.equals(other.phone))
-            return false;
-        if (state == null) {
-            if (other.state != null)
-                return false;
-        } else if (!state.equals(other.state))
-            return false;
-        if (zip == null) {
-            if (other.zip != null)
-                return false;
-        } else if (!zip.equals(other.zip))
-            return false;
-        return true;
-    }
-
 }

common/data/src/main/java/org/thingsboard/server/common/data/Customer.java

@@ -28,7 +28,7 @@ public class Customer extends ContactBased<CustomerId> implements HasName {
     
     private String title;
     private TenantId tenantId;
-    private JsonNode additionalInfo;
+    private transient JsonNode additionalInfo;
     
     public Customer() {
         super();
@@ -77,7 +77,7 @@ public class Customer extends ContactBased<CustomerId> implements HasName {
     
     @Override
     public String getSearchText() {
-        return title;
+        return getTitle();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/Dashboard.java

@@ -22,7 +22,7 @@ public class Dashboard extends DashboardInfo {
 
     private static final long serialVersionUID = 872682138346187503L;
     
-    private JsonNode configuration;
+    private transient JsonNode configuration;
     
     public Dashboard() {
         super();

common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java

@@ -73,7 +73,7 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
 
     @Override
     public String getSearchText() {
-        return title;
+        return getTitle();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/Device.java

@@ -15,12 +15,14 @@
  */
 package org.thingsboard.server.common.data;
 
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.id.TenantId;
 
 import com.fasterxml.jackson.databind.JsonNode;
 
+@EqualsAndHashCode(callSuper = true)
 public class Device extends SearchTextBased<DeviceId> implements HasName {
 
     private static final long serialVersionUID = 2807343040519543363L;
@@ -29,7 +31,7 @@ public class Device extends SearchTextBased<DeviceId> implements HasName {
     private CustomerId customerId;
     private String name;
     private String type;
-    private JsonNode additionalInfo;
+    private transient JsonNode additionalInfo;
 
     public Device() {
         super();
@@ -91,56 +93,7 @@ public class Device extends SearchTextBased<DeviceId> implements HasName {
     
     @Override
     public String getSearchText() {
-        return name;
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((name == null) ? 0 : name.hashCode());
-        result = prime * result + ((type == null) ? 0 : type.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        Device other = (Device) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (name == null) {
-            if (other.name != null)
-                return false;
-        } else if (!name.equals(other.name))
-            return false;
-        if (type == null) {
-            if (other.type != null)
-                return false;
-        } else if (!type.equals(other.type))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
+        return getName();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/Event.java

@@ -31,7 +31,7 @@ public class Event extends BaseData<EventId> {
     private String type;
     private String uid;
     private EntityId entityId;
-    private JsonNode body;
+    private transient JsonNode body;
 
     public Event() {
         super();

common/data/src/main/java/org/thingsboard/server/common/data/Tenant.java

@@ -16,17 +16,19 @@
 package org.thingsboard.server.common.data;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.id.TenantId;
 
 import com.fasterxml.jackson.databind.JsonNode;
 
+@EqualsAndHashCode(callSuper = true)
 public class Tenant extends ContactBased<TenantId> implements HasName {
 
     private static final long serialVersionUID = 8057243243859922101L;
     
     private String title;
     private String region;
-    private JsonNode additionalInfo;
+    private transient JsonNode additionalInfo;
     
     public Tenant() {
         super();
@@ -75,44 +77,7 @@ public class Tenant extends ContactBased<TenantId> implements HasName {
     
     @Override
     public String getSearchText() {
-        return title;
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((region == null) ? 0 : region.hashCode());
-        result = prime * result + ((title == null) ? 0 : title.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        Tenant other = (Tenant) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (region == null) {
-            if (other.region != null)
-                return false;
-        } else if (!region.equals(other.region))
-            return false;
-        if (title == null) {
-            if (other.title != null)
-                return false;
-        } else if (!title.equals(other.title))
-            return false;
-        return true;
+        return getTitle();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/User.java

@@ -16,6 +16,7 @@
 package org.thingsboard.server.common.data;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.UserId;
@@ -23,6 +24,7 @@ import org.thingsboard.server.common.data.security.Authority;
 
 import com.fasterxml.jackson.databind.JsonNode;
 
+@EqualsAndHashCode(callSuper = true)
 public class User extends SearchTextBased<UserId> implements HasName {
 
     private static final long serialVersionUID = 8250339805336035966L;
@@ -33,7 +35,7 @@ public class User extends SearchTextBased<UserId> implements HasName {
     private Authority authority;
     private String firstName;
     private String lastName;
-    private JsonNode additionalInfo;
+    private transient JsonNode additionalInfo;
 
     public User() {
         super();
@@ -118,65 +120,7 @@ public class User extends SearchTextBased<UserId> implements HasName {
     
     @Override
     public String getSearchText() {
-        return email;
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((authority == null) ? 0 : authority.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((email == null) ? 0 : email.hashCode());
-        result = prime * result + ((firstName == null) ? 0 : firstName.hashCode());
-        result = prime * result + ((lastName == null) ? 0 : lastName.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        User other = (User) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (authority != other.authority)
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (email == null) {
-            if (other.email != null)
-                return false;
-        } else if (!email.equals(other.email))
-            return false;
-        if (firstName == null) {
-            if (other.firstName != null)
-                return false;
-        } else if (!firstName.equals(other.firstName))
-            return false;
-        if (lastName == null) {
-            if (other.lastName != null)
-                return false;
-        } else if (!lastName.equals(other.lastName))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
+        return getEmail();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/alarm/Alarm.java

@@ -42,7 +42,7 @@ public class Alarm extends BaseData<AlarmId> implements HasName {
     private long endTs;
     private long ackTs;
     private long clearTs;
-    private JsonNode details;
+    private transient JsonNode details;
     private boolean propagate;
 
     public Alarm() {

common/data/src/main/java/org/thingsboard/server/common/data/asset/Asset.java

@@ -16,12 +16,14 @@
 package org.thingsboard.server.common.data.asset;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.SearchTextBased;
 import org.thingsboard.server.common.data.id.AssetId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 
+@EqualsAndHashCode(callSuper = true)
 public class Asset extends SearchTextBased<AssetId> implements HasName {
 
     private static final long serialVersionUID = 2807343040519543363L;
@@ -30,7 +32,7 @@ public class Asset extends SearchTextBased<AssetId> implements HasName {
     private CustomerId customerId;
     private String name;
     private String type;
-    private JsonNode additionalInfo;
+    private transient JsonNode additionalInfo;
 
     public Asset() {
         super();
@@ -92,56 +94,7 @@ public class Asset extends SearchTextBased<AssetId> implements HasName {
     
     @Override
     public String getSearchText() {
-        return name;
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((name == null) ? 0 : name.hashCode());
-        result = prime * result + ((type == null) ? 0 : type.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        Asset other = (Asset) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (name == null) {
-            if (other.name != null)
-                return false;
-        } else if (!name.equals(other.name))
-            return false;
-        if (type == null) {
-            if (other.type != null)
-                return false;
-        } else if (!type.equals(other.type))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
+        return getName();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/id/EntityId.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import org.thingsboard.server.common.data.EntityType;
 
+import java.io.Serializable;
 import java.util.UUID;
 
 /**
@@ -28,7 +29,7 @@ import java.util.UUID;
 
 @JsonDeserialize(using = EntityIdDeserializer.class)
 @JsonSerialize(using = EntityIdSerializer.class)
-public interface EntityId {
+public interface EntityId extends Serializable { //NOSONAR, the constant is closely related to EntityId
 
     UUID NULL_UUID = UUID.fromString("13814000-1dd2-11b2-8080-808080808080");
 

common/data/src/main/java/org/thingsboard/server/common/data/plugin/ComponentDescriptor.java

@@ -32,7 +32,7 @@ public class ComponentDescriptor extends SearchTextBased<ComponentDescriptorId>
     @Getter @Setter private ComponentScope scope;
     @Getter @Setter private String name;
     @Getter @Setter private String clazz;
-    @Getter @Setter private JsonNode configurationDescriptor;
+    @Getter @Setter private transient JsonNode configurationDescriptor;
     @Getter @Setter private String actions;
 
     public ComponentDescriptor() {

common/data/src/main/java/org/thingsboard/server/common/data/plugin/PluginMetaData.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.common.data.plugin;
 
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.SearchTextBased;
 import org.thingsboard.server.common.data.id.PluginId;
@@ -22,6 +23,7 @@ import org.thingsboard.server.common.data.id.TenantId;
 
 import com.fasterxml.jackson.databind.JsonNode;
 
+@EqualsAndHashCode(callSuper = true)
 public class PluginMetaData extends SearchTextBased<PluginId> implements HasName {
 
     private static final long serialVersionUID = 1L;
@@ -32,8 +34,8 @@ public class PluginMetaData extends SearchTextBased<PluginId> implements HasName
     private String clazz;
     private boolean publicAccess;
     private ComponentLifecycleState state;
-    private JsonNode configuration;
-    private JsonNode additionalInfo;
+    private transient JsonNode configuration;
+    private transient JsonNode additionalInfo;
 
     public PluginMetaData() {
         super();
@@ -57,7 +59,7 @@ public class PluginMetaData extends SearchTextBased<PluginId> implements HasName
 
     @Override
     public String getSearchText() {
-        return name;
+        return getName();
     }
 
     public String getApiToken() {
@@ -125,49 +127,6 @@ public class PluginMetaData extends SearchTextBased<PluginId> implements HasName
         this.additionalInfo = additionalInfo;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((apiToken == null) ? 0 : apiToken.hashCode());
-        result = prime * result + ((clazz == null) ? 0 : clazz.hashCode());
-        result = prime * result + ((name == null) ? 0 : name.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        PluginMetaData other = (PluginMetaData) obj;
-        if (apiToken == null) {
-            if (other.apiToken != null)
-                return false;
-        } else if (!apiToken.equals(other.apiToken))
-            return false;
-        if (clazz == null) {
-            if (other.clazz != null)
-                return false;
-        } else if (!clazz.equals(other.clazz))
-            return false;
-        if (name == null) {
-            if (other.name != null)
-                return false;
-        } else if (!name.equals(other.name))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
-    }
-
     @Override
     public String toString() {
         return "PluginMetaData [apiToken=" + apiToken + ", tenantId=" + tenantId + ", name=" + name + ", clazz=" + clazz + ", publicAccess=" + publicAccess

common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleMetaData.java

@@ -35,10 +35,10 @@ public class RuleMetaData extends SearchTextBased<RuleId> implements HasName {
     private ComponentLifecycleState state;
     private int weight;
     private String pluginToken;
-    private JsonNode filters;
-    private JsonNode processor;
-    private JsonNode action;
-    private JsonNode additionalInfo;
+    private transient JsonNode filters;
+    private transient JsonNode processor;
+    private transient JsonNode action;
+    private transient JsonNode additionalInfo;
 
     public RuleMetaData() {
         super();
@@ -63,7 +63,7 @@ public class RuleMetaData extends SearchTextBased<RuleId> implements HasName {
 
     @Override
     public String getSearchText() {
-        return name;
+        return getName();
     }
 
     @Override

common/data/src/main/java/org/thingsboard/server/common/data/security/DeviceCredentials.java

@@ -15,10 +15,12 @@
  */
 package org.thingsboard.server.common.data.security;
 
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.BaseData;
 import org.thingsboard.server.common.data.id.DeviceCredentialsId;
 import org.thingsboard.server.common.data.id.DeviceId;
 
+@EqualsAndHashCode(callSuper = true)
 public class DeviceCredentials extends BaseData<DeviceCredentialsId> implements DeviceCredentialsFilter {
 
     private static final long serialVersionUID = -7869261127032877765L;
@@ -78,46 +80,6 @@ public class DeviceCredentials extends BaseData<DeviceCredentialsId> implements
         this.credentialsValue = credentialsValue;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((credentialsId == null) ? 0 : credentialsId.hashCode());
-        result = prime * result + ((credentialsType == null) ? 0 : credentialsType.hashCode());
-        result = prime * result + ((credentialsValue == null) ? 0 : credentialsValue.hashCode());
-        result = prime * result + ((deviceId == null) ? 0 : deviceId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        DeviceCredentials other = (DeviceCredentials) obj;
-        if (credentialsId == null) {
-            if (other.credentialsId != null)
-                return false;
-        } else if (!credentialsId.equals(other.credentialsId))
-            return false;
-        if (credentialsType != other.credentialsType)
-            return false;
-        if (credentialsValue == null) {
-            if (other.credentialsValue != null)
-                return false;
-        } else if (!credentialsValue.equals(other.credentialsValue))
-            return false;
-        if (deviceId == null) {
-            if (other.deviceId != null)
-                return false;
-        } else if (!deviceId.equals(other.deviceId))
-            return false;
-        return true;
-    }
-
     @Override
     public String toString() {
         return "DeviceCredentials [deviceId=" + deviceId + ", credentialsType=" + credentialsType + ", credentialsId="

common/data/src/main/java/org/thingsboard/server/common/data/security/UserCredentials.java

@@ -15,10 +15,12 @@
  */
 package org.thingsboard.server.common.data.security;
 
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.BaseData;
 import org.thingsboard.server.common.data.id.UserCredentialsId;
 import org.thingsboard.server.common.data.id.UserId;
 
+@EqualsAndHashCode(callSuper = true)
 public class UserCredentials extends BaseData<UserCredentialsId> {
 
     private static final long serialVersionUID = -2108436378880529163L;
@@ -86,52 +88,6 @@ public class UserCredentials extends BaseData<UserCredentialsId> {
         this.resetToken = resetToken;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = super.hashCode();
-        result = prime * result + ((activateToken == null) ? 0 : activateToken.hashCode());
-        result = prime * result + (enabled ? 1231 : 1237);
-        result = prime * result + ((password == null) ? 0 : password.hashCode());
-        result = prime * result + ((resetToken == null) ? 0 : resetToken.hashCode());
-        result = prime * result + ((userId == null) ? 0 : userId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (!super.equals(obj))
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        UserCredentials other = (UserCredentials) obj;
-        if (activateToken == null) {
-            if (other.activateToken != null)
-                return false;
-        } else if (!activateToken.equals(other.activateToken))
-            return false;
-        if (enabled != other.enabled)
-            return false;
-        if (password == null) {
-            if (other.password != null)
-                return false;
-        } else if (!password.equals(other.password))
-            return false;
-        if (resetToken == null) {
-            if (other.resetToken != null)
-                return false;
-        } else if (!resetToken.equals(other.resetToken))
-            return false;
-        if (userId == null) {
-            if (other.userId != null)
-                return false;
-        } else if (!userId.equals(other.userId))
-            return false;
-        return true;
-    }
-
     @Override
     public String toString() {
         StringBuilder builder = new StringBuilder();

common/data/src/main/java/org/thingsboard/server/common/data/widget/WidgetType.java

@@ -16,10 +16,12 @@
 package org.thingsboard.server.common.data.widget;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.BaseData;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetTypeId;
 
+@EqualsAndHashCode(callSuper = true)
 public class WidgetType extends BaseData<WidgetTypeId> {
 
     private static final long serialVersionUID = 8388684344603660756L;
@@ -28,7 +30,7 @@ public class WidgetType extends BaseData<WidgetTypeId> {
     private String bundleAlias;
     private String alias;
     private String name;
-    private JsonNode descriptor;
+    private transient JsonNode descriptor;
 
     public WidgetType() {
         super();
@@ -87,33 +89,6 @@ public class WidgetType extends BaseData<WidgetTypeId> {
         this.descriptor = descriptor;
     }
 
-    @Override
-    public int hashCode() {
-        int result = super.hashCode();
-        result = 31 * result + (tenantId != null ? tenantId.hashCode() : 0);
-        result = 31 * result + (bundleAlias != null ? bundleAlias.hashCode() : 0);
-        result = 31 * result + (alias != null ? alias.hashCode() : 0);
-        result = 31 * result + (name != null ? name.hashCode() : 0);
-        result = 31 * result + (descriptor != null ? descriptor.hashCode() : 0);
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        if (!super.equals(o)) return false;
-
-        WidgetType that = (WidgetType) o;
-
-        if (tenantId != null ? !tenantId.equals(that.tenantId) : that.tenantId != null) return false;
-        if (bundleAlias != null ? !bundleAlias.equals(that.bundleAlias) : that.bundleAlias != null) return false;
-        if (alias != null ? !alias.equals(that.alias) : that.alias != null) return false;
-        if (name != null ? !name.equals(that.name) : that.name != null) return false;
-        return descriptor != null ? descriptor.equals(that.descriptor) : that.descriptor == null;
-
-    }
-
     @Override
     public String toString() {
         final StringBuilder sb = new StringBuilder("WidgetType{");

common/data/src/main/java/org/thingsboard/server/common/data/widget/WidgetsBundle.java

@@ -80,7 +80,7 @@ public class WidgetsBundle extends SearchTextBased<WidgetsBundleId> {
 
     @Override
     public String getSearchText() {
-        return title;
+        return getTitle();
     }
 
     @Override

common/transport/src/main/java/org/thingsboard/server/common/transport/adaptor/JsonConverter.java

@@ -30,6 +30,7 @@ import org.thingsboard.server.common.msg.kv.AttributesKVMsg;
 public class JsonConverter {
 
     private static final Gson GSON = new Gson();
+    public static final String CAN_T_PARSE_VALUE = "Can't parse value: ";
 
     public static TelemetryUploadRequest convertToTelemetry(JsonElement jsonObject) throws JsonSyntaxException {
         return convertToTelemetry(jsonObject, BasicRequest.DEFAULT_REQUEST_ID);
@@ -45,11 +46,11 @@ public class JsonConverter {
                 if (je.isJsonObject()) {
                     parseObject(request, systemTs, je.getAsJsonObject());
                 } else {
-                    throw new JsonSyntaxException("Can't parse value: " + je);
+                    throw new JsonSyntaxException(CAN_T_PARSE_VALUE + je);
                 }
             });
         } else {
-            throw new JsonSyntaxException("Can't parse value: " + jsonObject);
+            throw new JsonSyntaxException(CAN_T_PARSE_VALUE + jsonObject);
         }
         return request;
     }
@@ -99,10 +100,10 @@ public class JsonConverter {
                         result.add(new LongDataEntry(valueEntry.getKey(), value.getAsLong()));
                     }
                 } else {
-                    throw new JsonSyntaxException("Can't parse value: " + value);
+                    throw new JsonSyntaxException(CAN_T_PARSE_VALUE + value);
                 }
             } else {
-                throw new JsonSyntaxException("Can't parse value: " + element);
+                throw new JsonSyntaxException(CAN_T_PARSE_VALUE + element);
             }
         }
         return result;
@@ -119,7 +120,7 @@ public class JsonConverter {
             request.add(parseValues(element.getAsJsonObject()).stream().map(kv -> new BaseAttributeKvEntry(kv, ts)).collect(Collectors.toList()));
             return request;
         } else {
-            throw new JsonSyntaxException("Can't parse value: " + element);
+            throw new JsonSyntaxException(CAN_T_PARSE_VALUE + element);
         }
     }
 

dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmService.java

@@ -37,7 +37,6 @@ import org.thingsboard.server.dao.entity.EntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.common.data.relation.EntityRelationsQuery;
 import org.thingsboard.server.common.data.relation.EntitySearchDirection;
-import org.thingsboard.server.dao.relation.RelationService;
 import org.thingsboard.server.common.data.relation.RelationsSearchParameters;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.tenant.TenantDao;
@@ -67,9 +66,6 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
     @Autowired
     private TenantDao tenantDao;
 
-    @Autowired
-    private RelationService relationService;
-
     @Autowired
     private EntityService entityService;
 
@@ -272,7 +268,7 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         boolean hasNext = true;
         AlarmSeverity highestSeverity = null;
         AlarmQuery query;
-        while (hasNext) {
+        while (hasNext && AlarmSeverity.CRITICAL != highestSeverity) {
             query = new AlarmQuery(entityId, nextPageLink, alarmSearchStatus, alarmStatus, false);
             List<AlarmInfo> alarms;
             try {
@@ -286,25 +282,29 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
             if (hasNext) {
                 nextPageLink = new TimePageData<>(alarms, nextPageLink).getNextPageLink();
             }
-            if (alarms.isEmpty()) {
+            AlarmSeverity severity = detectHighestSeverity(alarms);
+            if (severity == null) {
                 continue;
+            }
+            if (severity == AlarmSeverity.CRITICAL || highestSeverity == null) {
+                highestSeverity = severity;
             } else {
-                List<AlarmInfo> sorted = new ArrayList(alarms);
-                sorted.sort((p1, p2) -> p1.getSeverity().compareTo(p2.getSeverity()));
-                AlarmSeverity severity = sorted.get(0).getSeverity();
-                if (severity == AlarmSeverity.CRITICAL) {
-                    highestSeverity = severity;
-                    break;
-                } else if (highestSeverity == null) {
-                    highestSeverity = severity;
-                } else {
-                    highestSeverity = highestSeverity.compareTo(severity) < 0 ? highestSeverity : severity;
-                }
+                highestSeverity = highestSeverity.compareTo(severity) < 0 ? highestSeverity : severity;
             }
         }
         return highestSeverity;
     }
 
+    private AlarmSeverity detectHighestSeverity(List<AlarmInfo> alarms) {
+        if (!alarms.isEmpty()) {
+            List<AlarmInfo> sorted = new ArrayList(alarms);
+            sorted.sort((p1, p2) -> p1.getSeverity().compareTo(p2.getSeverity()));
+            return sorted.get(0).getSeverity();
+        } else {
+            return null;
+        }
+    }
+
     private void deleteRelation(EntityRelation alarmRelation) throws ExecutionException, InterruptedException {
         log.debug("Deleting Alarm relation: {}", alarmRelation);
         relationService.deleteRelation(alarmRelation).get();

dao/src/main/java/org/thingsboard/server/dao/asset/BaseAssetService.java

@@ -37,15 +37,14 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.common.data.relation.EntitySearchDirection;
 import org.thingsboard.server.dao.customer.CustomerDao;
 import org.thingsboard.server.dao.entity.AbstractEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
-import org.thingsboard.server.common.data.relation.EntitySearchDirection;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.service.PaginatedRemover;
 import org.thingsboard.server.dao.tenant.TenantDao;
 
-import javax.annotation.Nullable;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -57,6 +56,10 @@ import static org.thingsboard.server.dao.service.Validator.*;
 @Slf4j
 public class BaseAssetService extends AbstractEntityService implements AssetService {
 
+    public static final String INCORRECT_TENANT_ID = "Incorrect tenantId ";
+    public static final String INCORRECT_PAGE_LINK = "Incorrect page link ";
+    public static final String INCORRECT_CUSTOMER_ID = "Incorrect customerId ";
+    public static final String INCORRECT_ASSET_ID = "Incorrect assetId ";
     @Autowired
     private AssetDao assetDao;
 
@@ -69,21 +72,21 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public Asset findAssetById(AssetId assetId) {
         log.trace("Executing findAssetById [{}]", assetId);
-        validateId(assetId, "Incorrect assetId " + assetId);
+        validateId(assetId, INCORRECT_ASSET_ID + assetId);
         return assetDao.findById(assetId.getId());
     }
 
     @Override
     public ListenableFuture<Asset> findAssetByIdAsync(AssetId assetId) {
         log.trace("Executing findAssetById [{}]", assetId);
-        validateId(assetId, "Incorrect assetId " + assetId);
+        validateId(assetId, INCORRECT_ASSET_ID + assetId);
         return assetDao.findByIdAsync(assetId.getId());
     }
 
     @Override
     public Optional<Asset> findAssetByTenantIdAndName(TenantId tenantId, String name) {
         log.trace("Executing findAssetByTenantIdAndName [{}][{}]", tenantId, name);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         return assetDao.findAssetsByTenantIdAndName(tenantId.getId(), name);
     }
 
@@ -111,7 +114,7 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public void deleteAsset(AssetId assetId) {
         log.trace("Executing deleteAsset [{}]", assetId);
-        validateId(assetId, "Incorrect assetId " + assetId);
+        validateId(assetId, INCORRECT_ASSET_ID + assetId);
         deleteEntityRelations(assetId);
         assetDao.removeById(assetId.getId());
     }
@@ -119,8 +122,8 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public TextPageData<Asset> findAssetsByTenantId(TenantId tenantId, TextPageLink pageLink) {
         log.trace("Executing findAssetsByTenantId, tenantId [{}], pageLink [{}]", tenantId, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Asset> assets = assetDao.findAssetsByTenantId(tenantId.getId(), pageLink);
         return new TextPageData<>(assets, pageLink);
     }
@@ -128,9 +131,9 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public TextPageData<Asset> findAssetsByTenantIdAndType(TenantId tenantId, String type, TextPageLink pageLink) {
         log.trace("Executing findAssetsByTenantIdAndType, tenantId [{}], type [{}], pageLink [{}]", tenantId, type, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         validateString(type, "Incorrect type " + type);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Asset> assets = assetDao.findAssetsByTenantIdAndType(tenantId.getId(), type, pageLink);
         return new TextPageData<>(assets, pageLink);
     }
@@ -138,7 +141,7 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public ListenableFuture<List<Asset>> findAssetsByTenantIdAndIdsAsync(TenantId tenantId, List<AssetId> assetIds) {
         log.trace("Executing findAssetsByTenantIdAndIdsAsync, tenantId [{}], assetIds [{}]", tenantId, assetIds);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         validateIds(assetIds, "Incorrect assetIds " + assetIds);
         return assetDao.findAssetsByTenantIdAndIdsAsync(tenantId.getId(), toUUIDs(assetIds));
     }
@@ -146,27 +149,27 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public void deleteAssetsByTenantId(TenantId tenantId) {
         log.trace("Executing deleteAssetsByTenantId, tenantId [{}]", tenantId);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         tenantAssetsRemover.removeEntities(tenantId);
     }
 
     @Override
     public TextPageData<Asset> findAssetsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink) {
         log.trace("Executing findAssetsByTenantIdAndCustomerId, tenantId [{}], customerId [{}], pageLink [{}]", tenantId, customerId, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Asset> assets = assetDao.findAssetsByTenantIdAndCustomerId(tenantId.getId(), customerId.getId(), pageLink);
-        return new TextPageData<Asset>(assets, pageLink);
+        return new TextPageData<>(assets, pageLink);
     }
 
     @Override
     public TextPageData<Asset> findAssetsByTenantIdAndCustomerIdAndType(TenantId tenantId, CustomerId customerId, String type, TextPageLink pageLink) {
         log.trace("Executing findAssetsByTenantIdAndCustomerIdAndType, tenantId [{}], customerId [{}], type [{}], pageLink [{}]", tenantId, customerId, type, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         validateString(type, "Incorrect type " + type);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Asset> assets = assetDao.findAssetsByTenantIdAndCustomerIdAndType(tenantId.getId(), customerId.getId(), type, pageLink);
         return new TextPageData<>(assets, pageLink);
     }
@@ -174,8 +177,8 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public ListenableFuture<List<Asset>> findAssetsByTenantIdCustomerIdAndIdsAsync(TenantId tenantId, CustomerId customerId, List<AssetId> assetIds) {
         log.trace("Executing findAssetsByTenantIdAndCustomerIdAndIdsAsync, tenantId [{}], customerId [{}], assetIds [{}]", tenantId, customerId, assetIds);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         validateIds(assetIds, "Incorrect assetIds " + assetIds);
         return assetDao.findAssetsByTenantIdAndCustomerIdAndIdsAsync(tenantId.getId(), customerId.getId(), toUUIDs(assetIds));
     }
@@ -183,8 +186,8 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
     @Override
     public void unassignCustomerAssets(TenantId tenantId, CustomerId customerId) {
         log.trace("Executing unassignCustomerAssets, tenantId [{}], customerId [{}]", tenantId, customerId);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         new CustomerAssetsUnassigner(tenantId).removeEntities(customerId);
     }
 
@@ -202,22 +205,16 @@ public class BaseAssetService extends AbstractEntityService implements AssetServ
             }
             return Futures.successfulAsList(futures);
         });
-
-        assets = Futures.transform(assets, new Function<List<Asset>, List<Asset>>() {
-            @Nullable
-            @Override
-            public List<Asset> apply(@Nullable List<Asset> assetList) {
-                return assetList == null ? Collections.emptyList() : assetList.stream().filter(asset -> query.getAssetTypes().contains(asset.getType())).collect(Collectors.toList());
-            }
-        });
-
+        assets = Futures.transform(assets, (Function<List<Asset>, List<Asset>>)assetList ->
+            assetList == null ? Collections.emptyList() : assetList.stream().filter(asset -> query.getAssetTypes().contains(asset.getType())).collect(Collectors.toList())
+        );
         return assets;
     }
 
     @Override
     public ListenableFuture<List<EntitySubtype>> findAssetTypesByTenantId(TenantId tenantId) {
         log.trace("Executing findAssetTypesByTenantId, tenantId [{}]", tenantId);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         ListenableFuture<List<EntitySubtype>> tenantAssetTypes = assetDao.findTenantAssetTypesAsync(tenantId.getId());
         return Futures.transform(tenantAssetTypes,
                 (Function<List<EntitySubtype>, List<EntitySubtype>>) assetTypes -> {

dao/src/main/java/org/thingsboard/server/dao/component/CassandraBaseComponentDescriptorDao.java

@@ -49,6 +49,8 @@ import static com.datastax.driver.core.querybuilder.QueryBuilder.select;
 @NoSqlDao
 public class CassandraBaseComponentDescriptorDao extends CassandraAbstractSearchTextDao<ComponentDescriptorEntity, ComponentDescriptor> implements ComponentDescriptorDao {
 
+    public static final String SEARCH_RESULT = "Search result: [{}]";
+
     @Override
     protected Class<ComponentDescriptorEntity> getColumnFamilyClass() {
         return ComponentDescriptorEntity.class;
@@ -79,7 +81,7 @@ public class CassandraBaseComponentDescriptorDao extends CassandraAbstractSearch
         if (log.isTraceEnabled()) {
             log.trace("Search result: [{}] for component entity [{}]", componentDescriptor != null, componentDescriptor);
         } else {
-            log.debug("Search result: [{}]", componentDescriptor != null);
+            log.debug(SEARCH_RESULT, componentDescriptor != null);
         }
         return componentDescriptor;
     }
@@ -93,7 +95,7 @@ public class CassandraBaseComponentDescriptorDao extends CassandraAbstractSearch
         if (log.isTraceEnabled()) {
             log.trace("Search result: [{}] for component entity [{}]", entity != null, entity);
         } else {
-            log.debug("Search result: [{}]", entity != null);
+            log.debug(SEARCH_RESULT, entity != null);
         }
         return DaoUtil.getData(entity);
     }
@@ -104,9 +106,9 @@ public class CassandraBaseComponentDescriptorDao extends CassandraAbstractSearch
         List<ComponentDescriptorEntity> entities = findPageWithTextSearch(ModelConstants.COMPONENT_DESCRIPTOR_BY_TYPE_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME,
                 Arrays.asList(eq(ModelConstants.COMPONENT_DESCRIPTOR_TYPE_PROPERTY, type)), pageLink);
         if (log.isTraceEnabled()) {
-            log.trace("Search result: [{}]", Arrays.toString(entities.toArray()));
+            log.trace(SEARCH_RESULT, Arrays.toString(entities.toArray()));
         } else {
-            log.debug("Search result: [{}]", entities.size());
+            log.debug(SEARCH_RESULT, entities.size());
         }
         return DaoUtil.convertDataList(entities);
     }
@@ -118,9 +120,9 @@ public class CassandraBaseComponentDescriptorDao extends CassandraAbstractSearch
                 Arrays.asList(eq(ModelConstants.COMPONENT_DESCRIPTOR_TYPE_PROPERTY, type),
                         eq(ModelConstants.COMPONENT_DESCRIPTOR_SCOPE_PROPERTY, scope.name())), pageLink);
         if (log.isTraceEnabled()) {
-            log.trace("Search result: [{}]", Arrays.toString(entities.toArray()));
+            log.trace(SEARCH_RESULT, Arrays.toString(entities.toArray()));
         } else {
-            log.debug("Search result: [{}]", entities.size());
+            log.debug(SEARCH_RESULT, entities.size());
         }
         return DaoUtil.convertDataList(entities);
     }

dao/src/main/java/org/thingsboard/server/dao/customer/CustomerServiceImpl.java

@@ -51,6 +51,7 @@ import static org.thingsboard.server.dao.service.Validator.validateId;
 public class CustomerServiceImpl extends AbstractEntityService implements CustomerService {
 
     private static final String PUBLIC_CUSTOMER_TITLE = "Public";
+    public static final String INCORRECT_CUSTOMER_ID = "Incorrect customerId ";
 
     @Autowired
     private CustomerDao customerDao;
@@ -73,14 +74,14 @@ public class CustomerServiceImpl extends AbstractEntityService implements Custom
     @Override
     public Customer findCustomerById(CustomerId customerId) {
         log.trace("Executing findCustomerById [{}]", customerId);
-        Validator.validateId(customerId, "Incorrect customerId " + customerId);
+        Validator.validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         return customerDao.findById(customerId.getId());
     }
 
     @Override
     public ListenableFuture<Customer> findCustomerByIdAsync(CustomerId customerId) {
         log.trace("Executing findCustomerByIdAsync [{}]", customerId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         return customerDao.findByIdAsync(customerId.getId());
     }
 
@@ -94,7 +95,7 @@ public class CustomerServiceImpl extends AbstractEntityService implements Custom
     @Override
     public void deleteCustomer(CustomerId customerId) {
         log.trace("Executing deleteCustomer [{}]", customerId);
-        Validator.validateId(customerId, "Incorrect customerId " + customerId);
+        Validator.validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         Customer customer = findCustomerById(customerId);
         if (customer == null) {
             throw new IncorrectParameterException("Unable to delete non-existent customer.");
@@ -110,7 +111,7 @@ public class CustomerServiceImpl extends AbstractEntityService implements Custom
     @Override
     public Customer findOrCreatePublicCustomer(TenantId tenantId) {
         log.trace("Executing findOrCreatePublicCustomer, tenantId [{}]", tenantId);
-        Validator.validateId(tenantId, "Incorrect customerId " + tenantId);
+        Validator.validateId(tenantId, INCORRECT_CUSTOMER_ID + tenantId);
         Optional<Customer> publicCustomerOpt = customerDao.findCustomersByTenantIdAndTitle(tenantId.getId(), PUBLIC_CUSTOMER_TITLE);
         if (publicCustomerOpt.isPresent()) {
             return publicCustomerOpt.get();

dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java

@@ -46,6 +46,8 @@ import static org.thingsboard.server.dao.service.Validator.validateId;
 @Slf4j
 public class DashboardServiceImpl extends AbstractEntityService implements DashboardService {
 
+    public static final String INCORRECT_DASHBOARD_ID = "Incorrect dashboardId ";
+    public static final String INCORRECT_TENANT_ID = "Incorrect tenantId ";
     @Autowired
     private DashboardDao dashboardDao;
 
@@ -61,28 +63,28 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     @Override
     public Dashboard findDashboardById(DashboardId dashboardId) {
         log.trace("Executing findDashboardById [{}]", dashboardId);
-        Validator.validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
+        Validator.validateId(dashboardId, INCORRECT_DASHBOARD_ID + dashboardId);
         return dashboardDao.findById(dashboardId.getId());
     }
 
     @Override
     public ListenableFuture<Dashboard> findDashboardByIdAsync(DashboardId dashboardId) {
         log.trace("Executing findDashboardByIdAsync [{}]", dashboardId);
-        validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
+        validateId(dashboardId, INCORRECT_DASHBOARD_ID + dashboardId);
         return dashboardDao.findByIdAsync(dashboardId.getId());
     }
 
     @Override
     public DashboardInfo findDashboardInfoById(DashboardId dashboardId) {
         log.trace("Executing findDashboardInfoById [{}]", dashboardId);
-        Validator.validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
+        Validator.validateId(dashboardId, INCORRECT_DASHBOARD_ID + dashboardId);
         return dashboardInfoDao.findById(dashboardId.getId());
     }
 
     @Override
     public ListenableFuture<DashboardInfo> findDashboardInfoByIdAsync(DashboardId dashboardId) {
         log.trace("Executing findDashboardInfoByIdAsync [{}]", dashboardId);
-        validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
+        validateId(dashboardId, INCORRECT_DASHBOARD_ID + dashboardId);
         return dashboardInfoDao.findByIdAsync(dashboardId.getId());
     }
 
@@ -110,7 +112,7 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     @Override
     public void deleteDashboard(DashboardId dashboardId) {
         log.trace("Executing deleteDashboard [{}]", dashboardId);
-        Validator.validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
+        Validator.validateId(dashboardId, INCORRECT_DASHBOARD_ID + dashboardId);
         deleteEntityRelations(dashboardId);
         dashboardDao.removeById(dashboardId.getId());
     }
@@ -118,7 +120,7 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     @Override
     public TextPageData<DashboardInfo> findDashboardsByTenantId(TenantId tenantId, TextPageLink pageLink) {
         log.trace("Executing findDashboardsByTenantId, tenantId [{}], pageLink [{}]", tenantId, pageLink);
-        Validator.validateId(tenantId, "Incorrect tenantId " + tenantId);
+        Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         Validator.validatePageLink(pageLink, "Incorrect page link " + pageLink);
         List<DashboardInfo> dashboards = dashboardInfoDao.findDashboardsByTenantId(tenantId.getId(), pageLink);
         return new TextPageData<>(dashboards, pageLink);
@@ -127,14 +129,14 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     @Override
     public void deleteDashboardsByTenantId(TenantId tenantId) {
         log.trace("Executing deleteDashboardsByTenantId, tenantId [{}]", tenantId);
-        Validator.validateId(tenantId, "Incorrect tenantId " + tenantId);
+        Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         tenantDashboardsRemover.removeEntities(tenantId);
     }
 
     @Override
     public TextPageData<DashboardInfo> findDashboardsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink) {
         log.trace("Executing findDashboardsByTenantIdAndCustomerId, tenantId [{}], customerId [{}], pageLink [{}]", tenantId, customerId, pageLink);
-        Validator.validateId(tenantId, "Incorrect tenantId " + tenantId);
+        Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         Validator.validateId(customerId, "Incorrect customerId " + customerId);
         Validator.validatePageLink(pageLink, "Incorrect page link " + pageLink);
         List<DashboardInfo> dashboards = dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId.getId(), customerId.getId(), pageLink);
@@ -144,7 +146,7 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     @Override
     public void unassignCustomerDashboards(TenantId tenantId, CustomerId customerId) {
         log.trace("Executing unassignCustomerDashboards, tenantId [{}], customerId [{}]", tenantId, customerId);
-        Validator.validateId(tenantId, "Incorrect tenantId " + tenantId);
+        Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         Validator.validateId(customerId, "Incorrect customerId " + customerId);
         new CustomerDashboardsUnassigner(tenantId).removeEntities(customerId);
     }

dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java

@@ -55,6 +55,10 @@ import static org.thingsboard.server.dao.service.Validator.*;
 @Slf4j
 public class DeviceServiceImpl extends AbstractEntityService implements DeviceService {
 
+    public static final String INCORRECT_TENANT_ID = "Incorrect tenantId ";
+    public static final String INCORRECT_PAGE_LINK = "Incorrect page link ";
+    public static final String INCORRECT_CUSTOMER_ID = "Incorrect customerId ";
+    public static final String INCORRECT_DEVICE_ID = "Incorrect deviceId ";
     @Autowired
     private DeviceDao deviceDao;
 
@@ -70,21 +74,21 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public Device findDeviceById(DeviceId deviceId) {
         log.trace("Executing findDeviceById [{}]", deviceId);
-        validateId(deviceId, "Incorrect deviceId " + deviceId);
+        validateId(deviceId, INCORRECT_DEVICE_ID + deviceId);
         return deviceDao.findById(deviceId.getId());
     }
 
     @Override
     public ListenableFuture<Device> findDeviceByIdAsync(DeviceId deviceId) {
         log.trace("Executing findDeviceById [{}]", deviceId);
-        validateId(deviceId, "Incorrect deviceId " + deviceId);
+        validateId(deviceId, INCORRECT_DEVICE_ID + deviceId);
         return deviceDao.findByIdAsync(deviceId.getId());
     }
 
     @Override
     public Optional<Device> findDeviceByTenantIdAndName(TenantId tenantId, String name) {
         log.trace("Executing findDeviceByTenantIdAndName [{}][{}]", tenantId, name);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         Optional<Device> deviceOpt = deviceDao.findDeviceByTenantIdAndName(tenantId.getId(), name);
         if (deviceOpt.isPresent()) {
             return Optional.of(deviceOpt.get());
@@ -125,7 +129,7 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public void deleteDevice(DeviceId deviceId) {
         log.trace("Executing deleteDevice [{}]", deviceId);
-        validateId(deviceId, "Incorrect deviceId " + deviceId);
+        validateId(deviceId, INCORRECT_DEVICE_ID + deviceId);
         DeviceCredentials deviceCredentials = deviceCredentialsService.findDeviceCredentialsByDeviceId(deviceId);
         if (deviceCredentials != null) {
             deviceCredentialsService.deleteDeviceCredentials(deviceCredentials);
@@ -137,8 +141,8 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public TextPageData<Device> findDevicesByTenantId(TenantId tenantId, TextPageLink pageLink) {
         log.trace("Executing findDevicesByTenantId, tenantId [{}], pageLink [{}]", tenantId, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Device> devices = deviceDao.findDevicesByTenantId(tenantId.getId(), pageLink);
         return new TextPageData<>(devices, pageLink);
     }
@@ -146,9 +150,9 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public TextPageData<Device> findDevicesByTenantIdAndType(TenantId tenantId, String type, TextPageLink pageLink) {
         log.trace("Executing findDevicesByTenantIdAndType, tenantId [{}], type [{}], pageLink [{}]", tenantId, type, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         validateString(type, "Incorrect type " + type);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Device> devices = deviceDao.findDevicesByTenantIdAndType(tenantId.getId(), type, pageLink);
         return new TextPageData<>(devices, pageLink);
     }
@@ -156,7 +160,7 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public ListenableFuture<List<Device>> findDevicesByTenantIdAndIdsAsync(TenantId tenantId, List<DeviceId> deviceIds) {
         log.trace("Executing findDevicesByTenantIdAndIdsAsync, tenantId [{}], deviceIds [{}]", tenantId, deviceIds);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         validateIds(deviceIds, "Incorrect deviceIds " + deviceIds);
         return deviceDao.findDevicesByTenantIdAndIdsAsync(tenantId.getId(), toUUIDs(deviceIds));
     }
@@ -165,16 +169,16 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public void deleteDevicesByTenantId(TenantId tenantId) {
         log.trace("Executing deleteDevicesByTenantId, tenantId [{}]", tenantId);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         tenantDevicesRemover.removeEntities(tenantId);
     }
 
     @Override
     public TextPageData<Device> findDevicesByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink) {
         log.trace("Executing findDevicesByTenantIdAndCustomerId, tenantId [{}], customerId [{}], pageLink [{}]", tenantId, customerId, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Device> devices = deviceDao.findDevicesByTenantIdAndCustomerId(tenantId.getId(), customerId.getId(), pageLink);
         return new TextPageData<>(devices, pageLink);
     }
@@ -182,10 +186,10 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public TextPageData<Device> findDevicesByTenantIdAndCustomerIdAndType(TenantId tenantId, CustomerId customerId, String type, TextPageLink pageLink) {
         log.trace("Executing findDevicesByTenantIdAndCustomerIdAndType, tenantId [{}], customerId [{}], type [{}], pageLink [{}]", tenantId, customerId, type, pageLink);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         validateString(type, "Incorrect type " + type);
-        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        validatePageLink(pageLink, INCORRECT_PAGE_LINK + pageLink);
         List<Device> devices =  deviceDao.findDevicesByTenantIdAndCustomerIdAndType(tenantId.getId(), customerId.getId(), type, pageLink);
         return new TextPageData<>(devices, pageLink);
     }
@@ -193,8 +197,8 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public ListenableFuture<List<Device>> findDevicesByTenantIdCustomerIdAndIdsAsync(TenantId tenantId, CustomerId customerId, List<DeviceId> deviceIds) {
         log.trace("Executing findDevicesByTenantIdCustomerIdAndIdsAsync, tenantId [{}], customerId [{}], deviceIds [{}]", tenantId, customerId, deviceIds);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         validateIds(deviceIds, "Incorrect deviceIds " + deviceIds);
         return deviceDao.findDevicesByTenantIdCustomerIdAndIdsAsync(tenantId.getId(),
                 customerId.getId(), toUUIDs(deviceIds));
@@ -203,8 +207,8 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public void unassignCustomerDevices(TenantId tenantId, CustomerId customerId) {
         log.trace("Executing unassignCustomerDevices, tenantId [{}], customerId [{}]", tenantId, customerId);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
-        validateId(customerId, "Incorrect customerId " + customerId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        validateId(customerId, INCORRECT_CUSTOMER_ID + customerId);
         new CustomerDevicesUnassigner(tenantId).removeEntities(customerId);
     }
 
@@ -237,7 +241,7 @@ public class DeviceServiceImpl extends AbstractEntityService implements DeviceSe
     @Override
     public ListenableFuture<List<EntitySubtype>> findDeviceTypesByTenantId(TenantId tenantId) {
         log.trace("Executing findDeviceTypesByTenantId, tenantId [{}]", tenantId);
-        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         ListenableFuture<List<EntitySubtype>> tenantDeviceTypes = deviceDao.findTenantDeviceTypesAsync(tenantId.getId());
         return Futures.transform(tenantDeviceTypes,
             (Function<List<EntitySubtype>, List<EntitySubtype>>) deviceTypes -> {

dao/src/main/java/org/thingsboard/server/dao/model/BaseEntity.java

@@ -18,7 +18,7 @@ package org.thingsboard.server.dao.model;
 import java.io.Serializable;
 import java.util.UUID;
 
-public interface BaseEntity<D> extends ToData<D>, Serializable {
+public interface BaseEntity<D> extends ToData<D> {
 
     UUID getId();
 

dao/src/main/java/org/thingsboard/server/dao/model/EntitySubtypeEntity.java

@@ -19,7 +19,6 @@ package org.thingsboard.server.dao.model;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import org.thingsboard.server.common.data.EntitySubtype;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -32,9 +31,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = ENTITY_SUBTYPE_COLUMN_FAMILY_NAME)
 public class EntitySubtypeEntity {
 
-    @Transient
-    private static final long serialVersionUID = -1268181961886910152L;
-
     @PartitionKey(value = 0)
     @Column(name = ENTITY_SUBTYPE_TENANT_ID_PROPERTY)
     private UUID tenantId;

dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java

@@ -42,6 +42,7 @@ public class ModelConstants {
     public static final String ALIAS_PROPERTY = "alias";
     public static final String SEARCH_TEXT_PROPERTY = "search_text";
     public static final String ADDITIONAL_INFO_PROPERTY = "additional_info";
+    public static final String ENTITY_TYPE_PROPERTY = "entity_type";
 
     /**
      * Cassandra user constants.
@@ -155,7 +156,7 @@ public class ModelConstants {
      */
     public static final String ENTITY_SUBTYPE_COLUMN_FAMILY_NAME = "entity_subtype";
     public static final String ENTITY_SUBTYPE_TENANT_ID_PROPERTY = TENANT_ID_PROPERTY;
-    public static final String ENTITY_SUBTYPE_ENTITY_TYPE_PROPERTY = "entity_type";
+    public static final String ENTITY_SUBTYPE_ENTITY_TYPE_PROPERTY = ENTITY_TYPE_PROPERTY;
     public static final String ENTITY_SUBTYPE_TYPE_PROPERTY = "type";
 
     /**
@@ -250,7 +251,7 @@ public class ModelConstants {
     public static final String PLUGIN_API_TOKEN_PROPERTY = "api_token";
     public static final String PLUGIN_CLASS_PROPERTY = "plugin_class";
     public static final String PLUGIN_ACCESS_PROPERTY = "public_access";
-    public static final String PLUGIN_STATE_PROPERTY = "state";
+    public static final String PLUGIN_STATE_PROPERTY = STATE_PROPERTY;
     public static final String PLUGIN_CONFIGURATION_PROPERTY = "configuration";
 
     public static final String PLUGIN_BY_API_TOKEN_COLUMN_FAMILY_NAME = "plugin_by_api_token";
@@ -277,7 +278,7 @@ public class ModelConstants {
     public static final String RULE_COLUMN_FAMILY_NAME = "rule";
     public static final String RULE_TENANT_ID_PROPERTY = TENANT_ID_PROPERTY;
     public static final String RULE_NAME_PROPERTY = "name";
-    public static final String RULE_STATE_PROPERTY = "state";
+    public static final String RULE_STATE_PROPERTY = STATE_PROPERTY;
     public static final String RULE_WEIGHT_PROPERTY = "weight";
     public static final String RULE_PLUGIN_TOKEN_PROPERTY = "plugin_token";
     public static final String RULE_FILTERS = "filters";
@@ -294,7 +295,7 @@ public class ModelConstants {
     public static final String EVENT_TENANT_ID_PROPERTY = TENANT_ID_PROPERTY;
     public static final String EVENT_TYPE_PROPERTY = "event_type";
     public static final String EVENT_UID_PROPERTY = "event_uid";
-    public static final String EVENT_ENTITY_TYPE_PROPERTY = "entity_type";
+    public static final String EVENT_ENTITY_TYPE_PROPERTY = ENTITY_TYPE_PROPERTY;
     public static final String EVENT_ENTITY_ID_PROPERTY = "entity_id";
     public static final String EVENT_BODY_PROPERTY = "body";
 
@@ -310,7 +311,7 @@ public class ModelConstants {
     public static final String TS_KV_LATEST_CF = "ts_kv_latest_cf";
 
 
-    public static final String ENTITY_TYPE_COLUMN = "entity_type";
+    public static final String ENTITY_TYPE_COLUMN = ENTITY_TYPE_PROPERTY;
     public static final String ENTITY_ID_COLUMN = "entity_id";
     public static final String ATTRIBUTE_TYPE_COLUMN = "attribute_type";
     public static final String ATTRIBUTE_KEY_COLUMN = "attribute_key";

dao/src/main/java/org/thingsboard/server/dao/model/nosql/AdminSettingsEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.AdminSettings;
 import org.thingsboard.server.common.data.id.AdminSettingsId;
 import org.thingsboard.server.dao.model.BaseEntity;
@@ -31,11 +32,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = ADMIN_SETTINGS_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class AdminSettingsEntity implements BaseEntity<AdminSettings> {
 
-    @Transient
-    private static final long serialVersionUID = 899117723388310403L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -82,56 +82,6 @@ public final class AdminSettingsEntity implements BaseEntity<AdminSettings> {
         this.jsonValue = jsonValue;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((jsonValue == null) ? 0 : jsonValue.hashCode());
-        result = prime * result + ((key == null) ? 0 : key.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        AdminSettingsEntity other = (AdminSettingsEntity) obj;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (jsonValue == null) {
-            if (other.jsonValue != null)
-                return false;
-        } else if (!jsonValue.equals(other.jsonValue))
-            return false;
-        if (key == null) {
-            if (other.key != null)
-                return false;
-        } else if (!key.equals(other.key))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("AdminSettingsEntity [id=");
-        builder.append(id);
-        builder.append(", key=");
-        builder.append(key);
-        builder.append(", jsonValue=");
-        builder.append(jsonValue);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public AdminSettings toData() {
         AdminSettings adminSettings = new AdminSettings(new AdminSettingsId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/AlarmEntity.java

@@ -18,6 +18,8 @@ package org.thingsboard.server.dao.model.nosql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.*;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmId;
@@ -36,11 +38,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = ALARM_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class AlarmEntity implements BaseEntity<Alarm> {
 
-    @Transient
-    private static final long serialVersionUID = -1265181166886910152L;
-
     @ClusteringColumn(value = 1)
     @Column(name = ID_PROPERTY)
     private UUID id;

dao/src/main/java/org/thingsboard/server/dao/model/nosql/AssetEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.AssetId;
 import org.thingsboard.server.common.data.id.CustomerId;
@@ -33,11 +34,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = ASSET_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class AssetEntity implements SearchTextEntity<Asset> {
 
-    @Transient
-    private static final long serialVersionUID = -1265181166886910152L;
-
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -132,7 +132,7 @@ public final class AssetEntity implements SearchTextEntity<Asset> {
 
     @Override
     public String getSearchTextSource() {
-        return name;
+        return getName();
     }
 
     @Override
@@ -144,80 +144,6 @@ public final class AssetEntity implements SearchTextEntity<Asset> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((name == null) ? 0 : name.hashCode());
-        result = prime * result + ((type == null) ? 0 : type.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        AssetEntity other = (AssetEntity) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (name == null) {
-            if (other.name != null)
-                return false;
-        } else if (!name.equals(other.name))
-            return false;
-        if (type == null) {
-            if (other.type != null)
-                return false;
-        } else if (!type.equals(other.type))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("AssetEntity [id=");
-        builder.append(id);
-        builder.append(", tenantId=");
-        builder.append(tenantId);
-        builder.append(", customerId=");
-        builder.append(customerId);
-        builder.append(", name=");
-        builder.append(name);
-        builder.append(", type=");
-        builder.append(type);
-        builder.append(", additionalInfo=");
-        builder.append(additionalInfo);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public Asset toData() {
         Asset asset = new Asset(new AssetId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/ComponentDescriptorEntity.java

@@ -36,8 +36,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = COMPONENT_DESCRIPTOR_COLUMN_FAMILY_NAME)
 public class ComponentDescriptorEntity implements SearchTextEntity<ComponentDescriptor> {
 
-    private static final long serialVersionUID = 1L;
-
     @PartitionKey
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -160,6 +158,6 @@ public class ComponentDescriptorEntity implements SearchTextEntity<ComponentDesc
 
     @Override
     public String getSearchTextSource() {
-        return searchText;
+        return getSearchText();
     }
 }

dao/src/main/java/org/thingsboard/server/dao/model/nosql/CustomerEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -32,11 +33,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = CUSTOMER_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class CustomerEntity implements SearchTextEntity<Customer> {
 
-    @Transient
-    private static final long serialVersionUID = -7732527103760948490L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -197,7 +197,7 @@ public final class CustomerEntity implements SearchTextEntity<Customer> {
     
     @Override
     public String getSearchTextSource() {
-        return title;
+        return getTitle();
     }
 
     @Override
@@ -209,128 +209,6 @@ public final class CustomerEntity implements SearchTextEntity<Customer> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((address == null) ? 0 : address.hashCode());
-        result = prime * result + ((address2 == null) ? 0 : address2.hashCode());
-        result = prime * result + ((city == null) ? 0 : city.hashCode());
-        result = prime * result + ((country == null) ? 0 : country.hashCode());
-        result = prime * result + ((email == null) ? 0 : email.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((phone == null) ? 0 : phone.hashCode());
-        result = prime * result + ((state == null) ? 0 : state.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        result = prime * result + ((title == null) ? 0 : title.hashCode());
-        result = prime * result + ((zip == null) ? 0 : zip.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        CustomerEntity other = (CustomerEntity) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (address == null) {
-            if (other.address != null)
-                return false;
-        } else if (!address.equals(other.address))
-            return false;
-        if (address2 == null) {
-            if (other.address2 != null)
-                return false;
-        } else if (!address2.equals(other.address2))
-            return false;
-        if (city == null) {
-            if (other.city != null)
-                return false;
-        } else if (!city.equals(other.city))
-            return false;
-        if (country == null) {
-            if (other.country != null)
-                return false;
-        } else if (!country.equals(other.country))
-            return false;
-        if (email == null) {
-            if (other.email != null)
-                return false;
-        } else if (!email.equals(other.email))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (phone == null) {
-            if (other.phone != null)
-                return false;
-        } else if (!phone.equals(other.phone))
-            return false;
-        if (state == null) {
-            if (other.state != null)
-                return false;
-        } else if (!state.equals(other.state))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        if (title == null) {
-            if (other.title != null)
-                return false;
-        } else if (!title.equals(other.title))
-            return false;
-        if (zip == null) {
-            if (other.zip != null)
-                return false;
-        } else if (!zip.equals(other.zip))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("CustomerEntity [id=");
-        builder.append(id);
-        builder.append(", tenantId=");
-        builder.append(tenantId);
-        builder.append(", title=");
-        builder.append(title);
-        builder.append(", country=");
-        builder.append(country);
-        builder.append(", state=");
-        builder.append(state);
-        builder.append(", city=");
-        builder.append(city);
-        builder.append(", address=");
-        builder.append(address);
-        builder.append(", address2=");
-        builder.append(address2);
-        builder.append(", zip=");
-        builder.append(zip);
-        builder.append(", phone=");
-        builder.append(phone);
-        builder.append(", email=");
-        builder.append(email);
-        builder.append(", additionalInfo=");
-        builder.append(additionalInfo);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public Customer toData() {
         Customer customer = new Customer(new CustomerId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.Dashboard;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
@@ -33,11 +34,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = DASHBOARD_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class DashboardEntity implements SearchTextEntity<Dashboard> {
     
-    @Transient
-    private static final long serialVersionUID = 2998395951247446191L;
-
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -119,7 +119,7 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
     
     @Override
     public String getSearchTextSource() {
-        return title;
+        return getTitle();
     }
 
     @Override
@@ -131,80 +131,6 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((configuration == null) ? 0 : configuration.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((searchText == null) ? 0 : searchText.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        result = prime * result + ((title == null) ? 0 : title.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        DashboardEntity other = (DashboardEntity) obj;
-        if (configuration == null) {
-            if (other.configuration != null)
-                return false;
-        } else if (!configuration.equals(other.configuration))
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (searchText == null) {
-            if (other.searchText != null)
-                return false;
-        } else if (!searchText.equals(other.searchText))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        if (title == null) {
-            if (other.title != null)
-                return false;
-        } else if (!title.equals(other.title))
-            return false;
-        return true;
-    }
-    
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("DashboardEntity [id=");
-        builder.append(id);
-        builder.append(", tenantId=");
-        builder.append(tenantId);
-        builder.append(", customerId=");
-        builder.append(customerId);
-        builder.append(", title=");
-        builder.append(title);
-        builder.append(", searchText=");
-        builder.append(searchText);
-        builder.append(", configuration=");
-        builder.append(configuration);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public Dashboard toData() {
         Dashboard dashboard = new Dashboard(new DashboardId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardInfoEntity.java

@@ -19,7 +19,8 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.DashboardInfo;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
@@ -31,11 +32,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = DASHBOARD_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
 
-    @Transient
-    private static final long serialVersionUID = 2998395951247446191L;
-
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -105,7 +105,7 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
 
     @Override
     public String getSearchTextSource() {
-        return title;
+        return getTitle();
     }
 
     @Override
@@ -117,72 +117,6 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((searchText == null) ? 0 : searchText.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        result = prime * result + ((title == null) ? 0 : title.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        DashboardInfoEntity other = (DashboardInfoEntity) obj;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (searchText == null) {
-            if (other.searchText != null)
-                return false;
-        } else if (!searchText.equals(other.searchText))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        if (title == null) {
-            if (other.title != null)
-                return false;
-        } else if (!title.equals(other.title))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("DashboardInfoEntity [id=");
-        builder.append(id);
-        builder.append(", tenantId=");
-        builder.append(tenantId);
-        builder.append(", customerId=");
-        builder.append(customerId);
-        builder.append(", title=");
-        builder.append(title);
-        builder.append(", searchText=");
-        builder.append(searchText);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public DashboardInfo toData() {
         DashboardInfo dashboardInfo = new DashboardInfo(new DashboardId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/DeviceCredentialsEntity.java

@@ -19,7 +19,8 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.id.DeviceCredentialsId;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
@@ -32,11 +33,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = DEVICE_CREDENTIALS_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class DeviceCredentialsEntity implements BaseEntity<DeviceCredentials> {
 
-    @Transient
-    private static final long serialVersionUID = -2667310560260623272L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -109,69 +109,6 @@ public final class DeviceCredentialsEntity implements BaseEntity<DeviceCredentia
         this.credentialsValue = credentialsValue;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((credentialsId == null) ? 0 : credentialsId.hashCode());
-        result = prime * result + ((credentialsType == null) ? 0 : credentialsType.hashCode());
-        result = prime * result + ((credentialsValue == null) ? 0 : credentialsValue.hashCode());
-        result = prime * result + ((deviceId == null) ? 0 : deviceId.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        DeviceCredentialsEntity other = (DeviceCredentialsEntity) obj;
-        if (credentialsId == null) {
-            if (other.credentialsId != null)
-                return false;
-        } else if (!credentialsId.equals(other.credentialsId))
-            return false;
-        if (credentialsType != other.credentialsType)
-            return false;
-        if (credentialsValue == null) {
-            if (other.credentialsValue != null)
-                return false;
-        } else if (!credentialsValue.equals(other.credentialsValue))
-            return false;
-        if (deviceId == null) {
-            if (other.deviceId != null)
-                return false;
-        } else if (!deviceId.equals(other.deviceId))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("DeviceCredentialsEntity [id=");
-        builder.append(id);
-        builder.append(", deviceId=");
-        builder.append(deviceId);
-        builder.append(", credentialsType=");
-        builder.append(credentialsType);
-        builder.append(", credentialsId=");
-        builder.append(credentialsId);
-        builder.append(", credentialsValue=");
-        builder.append(credentialsValue);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public DeviceCredentials toData() {
         DeviceCredentials deviceCredentials = new DeviceCredentials(new DeviceCredentialsId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/DeviceEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DeviceId;
@@ -33,11 +34,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = DEVICE_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class DeviceEntity implements SearchTextEntity<Device> {
 
-    @Transient
-    private static final long serialVersionUID = -1265181166886910152L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -132,7 +132,7 @@ public final class DeviceEntity implements SearchTextEntity<Device> {
     
     @Override
     public String getSearchTextSource() {
-        return name;
+        return getName();
     }
 
     @Override
@@ -144,80 +144,6 @@ public final class DeviceEntity implements SearchTextEntity<Device> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((name == null) ? 0 : name.hashCode());
-        result = prime * result + ((type == null) ? 0 : type.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        DeviceEntity other = (DeviceEntity) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (name == null) {
-            if (other.name != null)
-                return false;
-        } else if (!name.equals(other.name))
-            return false;
-        if (type == null) {
-            if (other.type != null)
-                return false;
-        } else if (!type.equals(other.type))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("DeviceEntity [id=");
-        builder.append(id);
-        builder.append(", tenantId=");
-        builder.append(tenantId);
-        builder.append(", customerId=");
-        builder.append(customerId);
-        builder.append(", name=");
-        builder.append(name);
-        builder.append(", type=");
-        builder.append(type);
-        builder.append(", additionalInfo=");
-        builder.append(additionalInfo);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public Device toData() {
         Device device = new Device(new DeviceId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/EventEntity.java

@@ -41,9 +41,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = EVENT_COLUMN_FAMILY_NAME)
 public class EventEntity implements BaseEntity<Event> {
 
-    @Transient
-    private static final long serialVersionUID = -1265181166886910153L;
-
     @Column(name = ID_PROPERTY)
     private UUID id;
 

dao/src/main/java/org/thingsboard/server/dao/model/nosql/PluginMetaDataEntity.java

@@ -18,6 +18,8 @@ package org.thingsboard.server.dao.model.nosql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.*;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.id.PluginId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
@@ -32,11 +34,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = PLUGIN_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
 
-    @Transient
-    private static final long serialVersionUID = -5231612734979707866L;
-
     @PartitionKey
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -89,7 +90,7 @@ public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
 
     @Override
     public String getSearchTextSource() {
-        return searchText;
+        return getSearchText();
     }
 
     @Override
@@ -190,27 +191,4 @@ public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
         return data;
     }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o)
-            return true;
-        if (o == null || getClass() != o.getClass())
-            return false;
-        PluginMetaDataEntity entity = (PluginMetaDataEntity) o;
-        return Objects.equals(id, entity.id) && Objects.equals(apiToken, entity.apiToken) && Objects.equals(tenantId, entity.tenantId)
-                && Objects.equals(name, entity.name) && Objects.equals(clazz, entity.clazz) && Objects.equals(state, entity.state)
-                && Objects.equals(configuration, entity.configuration)
-                && Objects.equals(searchText, entity.searchText);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(id, apiToken, tenantId, name, clazz, state, configuration, searchText);
-    }
-
-    @Override
-    public String toString() {
-        return "PluginMetaDataEntity{" + "id=" + id + ", apiToken='" + apiToken + '\'' + ", tenantId=" + tenantId + ", name='" + name + '\'' + ", clazz='"
-                + clazz + '\'' + ", state=" + state + ", configuration=" + configuration + ", searchText='" + searchText + '\'' + '}';
-    }
 }

dao/src/main/java/org/thingsboard/server/dao/model/nosql/RuleMetaDataEntity.java

@@ -21,6 +21,8 @@ import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.id.RuleId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
@@ -30,17 +32,15 @@ import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.ComponentLifecycleStateCodec;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
-import javax.persistence.Transient;
-import java.util.Objects;
 import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = RULE_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
 
-    @Transient
-    private static final long serialVersionUID = 4011728715100800304L;
     @PartitionKey
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -87,7 +87,7 @@ public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
 
     @Override
     public String getSearchTextSource() {
-        return searchText;
+        return getSearchText();
     }
 
     @Override
@@ -197,35 +197,4 @@ public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
         return rule;
     }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        RuleMetaDataEntity that = (RuleMetaDataEntity) o;
-        return weight == that.weight &&
-                Objects.equals(id, that.id) &&
-                Objects.equals(tenantId, that.tenantId) &&
-                Objects.equals(name, that.name) &&
-                Objects.equals(pluginToken, that.pluginToken) &&
-                Objects.equals(state, that.state) &&
-                Objects.equals(searchText, that.searchText);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(id, tenantId, name, pluginToken, state, weight, searchText);
-    }
-
-    @Override
-    public String toString() {
-        return "RuleMetaDataEntity{" +
-                "id=" + id +
-                ", tenantId=" + tenantId +
-                ", name='" + name + '\'' +
-                ", pluginToken='" + pluginToken + '\'' +
-                ", state='" + state + '\'' +
-                ", weight=" + weight +
-                ", searchText='" + searchText + '\'' +
-                '}';
-    }
 }

dao/src/main/java/org/thingsboard/server/dao/model/nosql/TenantEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.Tenant;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.model.SearchTextEntity;
@@ -31,11 +32,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = TENANT_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class TenantEntity implements SearchTextEntity<Tenant> {
 
-    @Transient
-    private static final long serialVersionUID = -6198635547142409206L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -195,7 +195,7 @@ public final class TenantEntity implements SearchTextEntity<Tenant> {
 
     @Override
     public String getSearchTextSource() {
-        return title;
+        return getTitle();
     }
 
     @Override
@@ -207,128 +207,6 @@ public final class TenantEntity implements SearchTextEntity<Tenant> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((address == null) ? 0 : address.hashCode());
-        result = prime * result + ((address2 == null) ? 0 : address2.hashCode());
-        result = prime * result + ((city == null) ? 0 : city.hashCode());
-        result = prime * result + ((country == null) ? 0 : country.hashCode());
-        result = prime * result + ((email == null) ? 0 : email.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((phone == null) ? 0 : phone.hashCode());
-        result = prime * result + ((region == null) ? 0 : region.hashCode());
-        result = prime * result + ((state == null) ? 0 : state.hashCode());
-        result = prime * result + ((title == null) ? 0 : title.hashCode());
-        result = prime * result + ((zip == null) ? 0 : zip.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        TenantEntity other = (TenantEntity) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (address == null) {
-            if (other.address != null)
-                return false;
-        } else if (!address.equals(other.address))
-            return false;
-        if (address2 == null) {
-            if (other.address2 != null)
-                return false;
-        } else if (!address2.equals(other.address2))
-            return false;
-        if (city == null) {
-            if (other.city != null)
-                return false;
-        } else if (!city.equals(other.city))
-            return false;
-        if (country == null) {
-            if (other.country != null)
-                return false;
-        } else if (!country.equals(other.country))
-            return false;
-        if (email == null) {
-            if (other.email != null)
-                return false;
-        } else if (!email.equals(other.email))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (phone == null) {
-            if (other.phone != null)
-                return false;
-        } else if (!phone.equals(other.phone))
-            return false;
-        if (region == null) {
-            if (other.region != null)
-                return false;
-        } else if (!region.equals(other.region))
-            return false;
-        if (state == null) {
-            if (other.state != null)
-                return false;
-        } else if (!state.equals(other.state))
-            return false;
-        if (title == null) {
-            if (other.title != null)
-                return false;
-        } else if (!title.equals(other.title))
-            return false;
-        if (zip == null) {
-            if (other.zip != null)
-                return false;
-        } else if (!zip.equals(other.zip))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("TenantEntity [id=");
-        builder.append(id);
-        builder.append(", title=");
-        builder.append(title);
-        builder.append(", region=");
-        builder.append(region);
-        builder.append(", country=");
-        builder.append(country);
-        builder.append(", state=");
-        builder.append(state);
-        builder.append(", city=");
-        builder.append(city);
-        builder.append(", address=");
-        builder.append(address);
-        builder.append(", address2=");
-        builder.append(address2);
-        builder.append(", zip=");
-        builder.append(zip);
-        builder.append(", phone=");
-        builder.append(phone);
-        builder.append(", email=");
-        builder.append(email);
-        builder.append(", additionalInfo=");
-        builder.append(additionalInfo);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public Tenant toData() {
         Tenant tenant = new Tenant(new TenantId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/UserCredentialsEntity.java

@@ -19,7 +19,7 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.id.UserCredentialsId;
 import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.security.UserCredentials;
@@ -30,11 +30,9 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = USER_CREDENTIALS_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
 public final class UserCredentialsEntity implements BaseEntity<UserCredentials> {
 
-    @Transient
-    private static final long serialVersionUID = 1348221414123438374L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -119,58 +117,6 @@ public final class UserCredentialsEntity implements BaseEntity<UserCredentials>
         this.resetToken = resetToken;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((activateToken == null) ? 0 : activateToken.hashCode());
-        result = prime * result + (enabled ? 1231 : 1237);
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((password == null) ? 0 : password.hashCode());
-        result = prime * result + ((resetToken == null) ? 0 : resetToken.hashCode());
-        result = prime * result + ((userId == null) ? 0 : userId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        UserCredentialsEntity other = (UserCredentialsEntity) obj;
-        if (activateToken == null) {
-            if (other.activateToken != null)
-                return false;
-        } else if (!activateToken.equals(other.activateToken))
-            return false;
-        if (enabled != other.enabled)
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (password == null) {
-            if (other.password != null)
-                return false;
-        } else if (!password.equals(other.password))
-            return false;
-        if (resetToken == null) {
-            if (other.resetToken != null)
-                return false;
-        } else if (!resetToken.equals(other.resetToken))
-            return false;
-        if (userId == null) {
-            if (other.userId != null)
-                return false;
-        } else if (!userId.equals(other.userId))
-            return false;
-        return true;
-    }
-
     @Override
     public UserCredentials toData() {
         UserCredentials userCredentials = new UserCredentials(new UserCredentialsId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/UserEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -35,11 +36,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = USER_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class UserEntity implements SearchTextEntity<User> {
 
-	@Transient
-	private static final long serialVersionUID = -7740338274987723489L;
-    
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -158,7 +158,7 @@ public final class UserEntity implements SearchTextEntity<User> {
 	
     @Override
     public String getSearchTextSource() {
-        return email;
+        return getEmail();
     }
 
     @Override
@@ -170,93 +170,6 @@ public final class UserEntity implements SearchTextEntity<User> {
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
-        result = prime * result + ((authority == null) ? 0 : authority.hashCode());
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
-        result = prime * result + ((email == null) ? 0 : email.hashCode());
-        result = prime * result + ((firstName == null) ? 0 : firstName.hashCode());
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((lastName == null) ? 0 : lastName.hashCode());
-        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        UserEntity other = (UserEntity) obj;
-        if (additionalInfo == null) {
-            if (other.additionalInfo != null)
-                return false;
-        } else if (!additionalInfo.equals(other.additionalInfo))
-            return false;
-        if (authority != other.authority)
-            return false;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
-        if (email == null) {
-            if (other.email != null)
-                return false;
-        } else if (!email.equals(other.email))
-            return false;
-        if (firstName == null) {
-            if (other.firstName != null)
-                return false;
-        } else if (!firstName.equals(other.firstName))
-            return false;
-        if (id == null) {
-            if (other.id != null)
-                return false;
-        } else if (!id.equals(other.id))
-            return false;
-        if (lastName == null) {
-            if (other.lastName != null)
-                return false;
-        } else if (!lastName.equals(other.lastName))
-            return false;
-        if (tenantId == null) {
-            if (other.tenantId != null)
-                return false;
-        } else if (!tenantId.equals(other.tenantId))
-            return false;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        StringBuilder builder = new StringBuilder();
-        builder.append("UserEntity [id=");
-        builder.append(id);
-        builder.append(", authority=");
-        builder.append(authority);
-        builder.append(", tenantId=");
-        builder.append(tenantId);
-        builder.append(", customerId=");
-        builder.append(customerId);
-        builder.append(", email=");
-        builder.append(email);
-        builder.append(", firstName=");
-        builder.append(firstName);
-        builder.append(", lastName=");
-        builder.append(lastName);
-        builder.append(", additionalInfo=");
-        builder.append(additionalInfo);
-        builder.append("]");
-        return builder.toString();
-    }
-
     @Override
     public User toData() {
 		User user = new User(new UserId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/WidgetTypeEntity.java

@@ -19,8 +19,9 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
 import com.fasterxml.jackson.databind.JsonNode;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetTypeId;
 import org.thingsboard.server.common.data.widget.WidgetType;
@@ -32,11 +33,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = WIDGET_TYPE_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class WidgetTypeEntity implements BaseEntity<WidgetType> {
 
-    @Transient
-    private static final long serialVersionUID = 3591054897680176342L;
-
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -125,45 +125,6 @@ public final class WidgetTypeEntity implements BaseEntity<WidgetType> {
         this.descriptor = descriptor;
     }
 
-    @Override
-    public int hashCode() {
-        int result = id != null ? id.hashCode() : 0;
-        result = 31 * result + (tenantId != null ? tenantId.hashCode() : 0);
-        result = 31 * result + (bundleAlias != null ? bundleAlias.hashCode() : 0);
-        result = 31 * result + (alias != null ? alias.hashCode() : 0);
-        result = 31 * result + (name != null ? name.hashCode() : 0);
-        result = 31 * result + (descriptor != null ? descriptor.hashCode() : 0);
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        WidgetTypeEntity that = (WidgetTypeEntity) o;
-
-        if (id != null ? !id.equals(that.id) : that.id != null) return false;
-        if (tenantId != null ? !tenantId.equals(that.tenantId) : that.tenantId != null) return false;
-        if (bundleAlias != null ? !bundleAlias.equals(that.bundleAlias) : that.bundleAlias != null) return false;
-        if (alias != null ? !alias.equals(that.alias) : that.alias != null) return false;
-        if (name != null ? !name.equals(that.name) : that.name != null) return false;
-        return descriptor != null ? descriptor.equals(that.descriptor) : that.descriptor == null;
-    }
-
-    @Override
-    public String toString() {
-        final StringBuilder sb = new StringBuilder("WidgetTypeEntity{");
-        sb.append("id=").append(id);
-        sb.append(", tenantId=").append(tenantId);
-        sb.append(", bundleAlias='").append(bundleAlias).append('\'');
-        sb.append(", alias='").append(alias).append('\'');
-        sb.append(", name ='").append(name).append('\'');
-        sb.append(", descriptor=").append(descriptor);
-        sb.append('}');
-        return sb.toString();
-    }
-
     @Override
     public WidgetType toData() {
         WidgetType widgetType = new WidgetType(new WidgetTypeId(id));

dao/src/main/java/org/thingsboard/server/dao/model/nosql/WidgetsBundleEntity.java

@@ -20,7 +20,8 @@ import com.datastax.driver.core.utils.UUIDs;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
-import com.datastax.driver.mapping.annotations.Transient;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetsBundleId;
 import org.thingsboard.server.common.data.widget.WidgetsBundle;
@@ -32,11 +33,10 @@ import java.util.UUID;
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = WIDGETS_BUNDLE_COLUMN_FAMILY_NAME)
+@EqualsAndHashCode
+@ToString
 public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle> {
 
-    @Transient
-    private static final long serialVersionUID = -8842195928585650849L;
-
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -119,7 +119,7 @@ public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle
 
     @Override
     public String getSearchTextSource() {
-        return title;
+        return getTitle();
     }
 
     @Override
@@ -131,46 +131,6 @@ public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle
         return searchText;
     }
 
-    @Override
-    public int hashCode() {
-        int result = id != null ? id.hashCode() : 0;
-        result = 31 * result + (tenantId != null ? tenantId.hashCode() : 0);
-        result = 31 * result + (alias != null ? alias.hashCode() : 0);
-        result = 31 * result + (title != null ? title.hashCode() : 0);
-        result = 31 * result + (searchText != null ? searchText.hashCode() : 0);
-        result = 31 * result + (image != null ? image.hashCode() : 0);
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        WidgetsBundleEntity that = (WidgetsBundleEntity) o;
-
-        if (id != null ? !id.equals(that.id) : that.id != null) return false;
-        if (tenantId != null ? !tenantId.equals(that.tenantId) : that.tenantId != null) return false;
-        if (alias != null ? !alias.equals(that.alias) : that.alias != null) return false;
-        if (title != null ? !title.equals(that.title) : that.title != null) return false;
-        if (searchText != null ? !searchText.equals(that.searchText) : that.searchText != null) return false;
-        return image != null ? image.equals(that.image) : that.image == null;
-
-    }
-
-    @Override
-    public String toString() {
-        final StringBuilder sb = new StringBuilder("WidgetsBundleEntity{");
-        sb.append("id=").append(id);
-        sb.append(", tenantId=").append(tenantId);
-        sb.append(", alias='").append(alias).append('\'');
-        sb.append(", title='").append(title).append('\'');
-        sb.append(", searchText='").append(searchText).append('\'');
-        sb.append(", image=").append(image);
-        sb.append('}');
-        return sb.toString();
-    }
-
     @Override
     public WidgetsBundle toData() {
         WidgetsBundle widgetsBundle = new WidgetsBundle(new WidgetsBundleId(id));

dao/src/main/java/org/thingsboard/server/dao/model/sql/AdminSettingsEntity.java

@@ -31,7 +31,6 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
@@ -42,9 +41,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = ADMIN_SETTINGS_COLUMN_FAMILY_NAME)
 public final class AdminSettingsEntity extends BaseSqlEntity<AdminSettings> implements BaseEntity<AdminSettings> {
 
-    @Transient
-    private static final long serialVersionUID = 842759712850362147L;
-
     @Column(name = ADMIN_SETTINGS_KEY_PROPERTY)
     private String key;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/AlarmEntity.java

@@ -45,9 +45,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = ALARM_COLUMN_FAMILY_NAME)
 public final class AlarmEntity extends BaseSqlEntity<Alarm> implements BaseEntity<Alarm> {
 
-    @Transient
-    private static final long serialVersionUID = -339979717281685984L;
-
     @Column(name = ALARM_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/AssetEntity.java

@@ -34,7 +34,6 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
@@ -45,9 +44,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = ASSET_COLUMN_FAMILY_NAME)
 public final class AssetEntity extends BaseSqlEntity<Asset> implements SearchTextEntity<Asset> {
 
-    @Transient
-    private static final long serialVersionUID = -4089175869616037592L;
-
     @Column(name = ASSET_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/ComponentDescriptorEntity.java

@@ -38,9 +38,6 @@ import javax.persistence.*;
 @Table(name = ModelConstants.COMPONENT_DESCRIPTOR_COLUMN_FAMILY_NAME)
 public class ComponentDescriptorEntity extends BaseSqlEntity<ComponentDescriptor> implements SearchTextEntity<ComponentDescriptor> {
 
-    @Transient
-    private static final long serialVersionUID = 253590350877992402L;
-
     @Enumerated(EnumType.STRING)
     @Column(name = ModelConstants.COMPONENT_DESCRIPTOR_TYPE_PROPERTY)
     private ComponentType type;
@@ -104,6 +101,6 @@ public class ComponentDescriptorEntity extends BaseSqlEntity<ComponentDescriptor
 
     @Override
     public String getSearchTextSource() {
-        return searchText;
+        return getSearchText();
     }
 }

dao/src/main/java/org/thingsboard/server/dao/model/sql/CustomerEntity.java

@@ -33,7 +33,6 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 @Data
 @EqualsAndHashCode(callSuper = true)
@@ -42,9 +41,6 @@ import javax.persistence.Transient;
 @Table(name = ModelConstants.CUSTOMER_COLUMN_FAMILY_NAME)
 public final class CustomerEntity extends BaseSqlEntity<Customer> implements SearchTextEntity<Customer> {
 
-    @Transient
-    private static final long serialVersionUID = 8951342124082981556L;
-
     @Column(name = ModelConstants.CUSTOMER_TENANT_ID_PROPERTY)
     private String tenantId;
     

dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardEntity.java

@@ -33,7 +33,6 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 @Data
 @EqualsAndHashCode(callSuper = true)
@@ -42,9 +41,6 @@ import javax.persistence.Transient;
 @Table(name = ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME)
 public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements SearchTextEntity<Dashboard> {
 
-    @Transient
-    private static final long serialVersionUID = -4838084363113078898L;
-
     @Column(name = ModelConstants.DASHBOARD_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardInfoEntity.java

@@ -29,7 +29,6 @@ import org.thingsboard.server.dao.model.SearchTextEntity;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 @Data
 @EqualsAndHashCode(callSuper = true)
@@ -37,9 +36,6 @@ import javax.persistence.Transient;
 @Table(name = ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME)
 public class DashboardInfoEntity extends BaseSqlEntity<DashboardInfo> implements SearchTextEntity<DashboardInfo> {
 
-    @Transient
-    private static final long serialVersionUID = -5525675905528050250L;
-
     @Column(name = ModelConstants.DASHBOARD_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/DeviceCredentialsEntity.java

@@ -34,9 +34,6 @@ import javax.persistence.*;
 @Table(name = ModelConstants.DEVICE_CREDENTIALS_COLUMN_FAMILY_NAME)
 public final class DeviceCredentialsEntity extends BaseSqlEntity<DeviceCredentials> implements BaseEntity<DeviceCredentials> {
 
-    @Transient
-    private static final long serialVersionUID = -2512362753385470464L;
-
     @Column(name = ModelConstants.DEVICE_CREDENTIALS_DEVICE_ID_PROPERTY)
     private String deviceId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/DeviceEntity.java

@@ -33,7 +33,6 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 @Data
 @EqualsAndHashCode(callSuper = true)
@@ -42,9 +41,6 @@ import javax.persistence.Transient;
 @Table(name = ModelConstants.DEVICE_COLUMN_FAMILY_NAME)
 public final class DeviceEntity extends BaseSqlEntity<Device> implements SearchTextEntity<Device> {
 
-    @Transient
-    private static final long serialVersionUID = 8050086401213322856L;
-
     @Column(name = ModelConstants.DEVICE_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/EventEntity.java

@@ -43,9 +43,6 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @NoArgsConstructor
 public class EventEntity  extends BaseSqlEntity<Event> implements BaseEntity<Event> {
 
-    @Transient
-    private static final long serialVersionUID = -5717830061727466727L;
-
     @Column(name = EVENT_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/PluginMetaDataEntity.java

@@ -42,9 +42,6 @@ import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
 @Table(name = ModelConstants.PLUGIN_COLUMN_FAMILY_NAME)
 public class PluginMetaDataEntity extends BaseSqlEntity<PluginMetaData> implements SearchTextEntity<PluginMetaData> {
 
-    @Transient
-    private static final long serialVersionUID = -6164321050824823149L;
-
     @Column(name = ModelConstants.PLUGIN_API_TOKEN_PROPERTY)
     private String apiToken;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/RuleMetaDataEntity.java

@@ -40,9 +40,6 @@ import javax.persistence.*;
 @Table(name = ModelConstants.RULE_COLUMN_FAMILY_NAME)
 public class RuleMetaDataEntity extends BaseSqlEntity<RuleMetaData> implements SearchTextEntity<RuleMetaData> {
 
-    @Transient
-    private static final long serialVersionUID = -1506905644259463884L;
-
     @Column(name = ModelConstants.RULE_TENANT_ID_PROPERTY)
     private String tenantId;
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/TenantEntity.java

@@ -31,7 +31,6 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
-import javax.persistence.Transient;
 
 @Data
 @EqualsAndHashCode(callSuper = true)
@@ -40,9 +39,6 @@ import javax.persistence.Transient;
 @Table(name = ModelConstants.TENANT_COLUMN_FAMILY_NAME)
 public final class TenantEntity extends BaseSqlEntity<Tenant> implements SearchTextEntity<Tenant> {
 
-    @Transient
-    private static final long serialVersionUID = -4330655990232136337L;
-
     @Column(name = ModelConstants.TENANT_TITLE_PROPERTY)
     private String title;