Fix null check in text search

dao/src/main/java/org/thingsboard/server/dao/sql/widget/WidgetsBundleRepository.java

@@ -41,19 +41,19 @@ public interface WidgetsBundleRepository extends JpaRepository<WidgetsBundleEnti
 
     @Query(nativeQuery = true,
             value = "SELECT * FROM widgets_bundle wb WHERE wb.tenant_id = :systemTenantId " +
-                "AND (wb.title ILIKE CONCAT('%', :textSearch, '%') " +
+                "AND (:textSearch IS NULL OR wb.title ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR wb.description ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR wb.id in (SELECT wbw.widgets_bundle_id FROM widgets_bundle_widget wbw, widget_type wtd " +
                 "WHERE wtd.id = wbw.widget_type_id " +
-                "AND (wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
+                "AND (:textSearch IS NULL OR wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR wtd.description ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR lower(wtd.tags\\:\\:text)\\:\\:text[] && string_to_array(lower(:textSearch), ' '))))",
             countQuery = "SELECT count(*) FROM widgets_bundle wb WHERE wb.tenant_id = :systemTenantId " +
-                "AND (wb.title ILIKE CONCAT('%', :textSearch, '%') " +
+                "AND (:textSearch IS NULL OR wb.title ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR wb.description ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR wb.id in (SELECT wbw.widgets_bundle_id FROM widgets_bundle_widget wbw, widget_type wtd " +
                 "WHERE wtd.id = wbw.widget_type_id " +
-                "AND (wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
+                "AND (:textSearch IS NULL OR wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR wtd.description ILIKE CONCAT('%', :textSearch, '%') " +
                 "OR lower(wtd.tags\\:\\:text)\\:\\:text[] && string_to_array(lower(:textSearch), ' '))))"
     )
@@ -75,19 +75,19 @@ public interface WidgetsBundleRepository extends JpaRepository<WidgetsBundleEnti
 
     @Query(nativeQuery = true,
             value = "SELECT * FROM widgets_bundle wb WHERE wb.tenant_id IN (:tenantIds) " +
-                    "AND (wb.title ILIKE CONCAT('%', :textSearch, '%') " +
+                    "AND (:textSearch IS NULL OR wb.title ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR wb.description ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR wb.id in (SELECT wbw.widgets_bundle_id FROM widgets_bundle_widget wbw, widget_type wtd " +
                     "WHERE wtd.id = wbw.widget_type_id " +
-                    "AND (wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
+                    "AND (:textSearch IS NULL OR wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR wtd.description ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR lower(wtd.tags\\:\\:text)\\:\\:text[] && string_to_array(lower(:textSearch), ' '))))",
             countQuery = "SELECT count(*) FROM widgets_bundle wb WHERE wb.tenant_id IN (:tenantIds) " +
-                    "AND (wb.title ILIKE CONCAT('%', :textSearch, '%') " +
+                    "AND (:textSearch IS NULL OR wb.title ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR wb.description ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR wb.id in (SELECT wbw.widgets_bundle_id FROM widgets_bundle_widget wbw, widget_type wtd " +
                     "WHERE wtd.id = wbw.widget_type_id " +
-                    "AND (wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
+                    "AND (:textSearch IS NULL OR wtd.name ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR wtd.description ILIKE CONCAT('%', :textSearch, '%') " +
                     "OR lower(wtd.tags\\:\\:text)\\:\\:text[] && string_to_array(lower(:textSearch), ' '))))"
     )