Fix id generation issues after updating to Hibernate 6

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

@@ -21,12 +21,14 @@ import jakarta.persistence.Id;
 import jakarta.persistence.MappedSuperclass;
 import lombok.Data;
 import org.apache.commons.lang3.StringUtils;
+import org.hibernate.annotations.UuidGenerator;
 import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.server.common.data.BaseData;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.UUIDBased;
 import org.thingsboard.server.dao.DaoUtil;
+import org.thingsboard.server.dao.sql.IdGenerator;
 
 import java.util.Arrays;
 import java.util.Collections;
@@ -44,6 +46,7 @@ public abstract class BaseSqlEntity<D> implements BaseEntity<D> {
 
     @Id
     @Column(name = ModelConstants.ID_PROPERTY, columnDefinition = "uuid")
+    @UuidGenerator(style = UuidGenerator.Style.AUTO, algorithm = IdGenerator.class)
     protected UUID id;
 
     @Column(name = ModelConstants.CREATED_TIME_PROPERTY, updatable = false)

dao/src/main/java/org/thingsboard/server/dao/sql/IdGenerator.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright © 2016-2025 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.sql;
+
+import com.datastax.oss.driver.api.core.uuid.Uuids;
+import lombok.extern.slf4j.Slf4j;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.id.uuid.UuidValueGenerator;
+
+import java.util.UUID;
+
+@Slf4j
+public class IdGenerator implements UuidValueGenerator {
+
+    @Override
+    public UUID generateUuid(SharedSessionContractImplementor session) {
+        return Uuids.timeBased();
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/sql/JpaAbstractDao.java

@@ -15,7 +15,6 @@
  */
 package org.thingsboard.server.dao.sql;
 
-import com.datastax.oss.driver.api.core.uuid.Uuids;
 import com.google.common.collect.Lists;
 import com.google.common.util.concurrent.ListenableFuture;
 import jakarta.persistence.EntityManager;
@@ -69,9 +68,7 @@ public abstract class JpaAbstractDao<E extends BaseEntity<D>, D>
         log.debug("Saving entity {}", entity);
         boolean isNew = entity.getUuid() == null;
         if (isNew) {
-            UUID uuid = Uuids.timeBased();
-            entity.setUuid(uuid);
-            entity.setCreatedTime(Uuids.unixTimestamp(uuid));
+            entity.setCreatedTime(System.currentTimeMillis());
         }
         try {
             entity = doSave(entity, isNew, flush);