Merge pull request #204 from thingsboard/feature/uuids-refactoring

Refactoring from UUIDs to Strings in SQL DAO to support ordering

@@ -106,7 +106,7 @@ coap:
   timeout: "${COAP_TIMEOUT:10000}"
 
 database:
-  type: "${DATABASE_TYPE:cassandra}" # cassandra OR sql
+  type: "${DATABASE_TYPE:sql}" # cassandra OR sql
 
 # Cassandra driver configuration parameters
 cassandra:

@@ -66,6 +66,11 @@
             <artifactId>mockito-all</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.datastax.cassandra</groupId>
+            <artifactId>cassandra-driver-core</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

+/**
+ * Copyright © 2016-2017 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.common.data;
+
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+/**
+ * Created by ashvayka on 13.07.17.
+ */
+public class UUIDConverter {
+
+    public static UUID fromString(String src) {
+        return UUID.fromString(src.substring(7, 15) + "-" + src.substring(3, 7) + "-1"
+                + src.substring(0, 3) + "-" + src.substring(15, 19) + "-" + src.substring(19));
+    }
+
+    public static String fromTimeUUID(UUID src) {
+        if (src.version() != 1) {
+            throw new IllegalArgumentException("Not a time UUID!");
+        }
+        String str = src.toString();
+        // 58e0a7d7-eebc-11d8-9669-0800200c9a66 => 1d8eebc58e0a7d796690800200c9a66. Note that [11d8] -> [1d8]
+        return str.substring(15, 18) + str.substring(9, 13) + str.substring(0, 8) + str.substring(19, 23) + str.substring(24);
+    }
+
+    public static List<String> fromTimeUUIDs(List<UUID> uuids) {
+        if (uuids == null) {
+            return null;
+        }
+        return uuids.stream().map(UUIDConverter::fromTimeUUID).collect(Collectors.toList());
+    }
+
+}
+

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.common.data.asset;
 
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.TenantId;
 
 import java.util.UUID;
@@ -40,6 +41,11 @@ public class TenantAssetType {
         this.tenantId = new TenantId(tenantId);
     }
 
+    public TenantAssetType(String type, String tenantId) {
+        this.type = type;
+        this.tenantId = new TenantId(UUIDConverter.fromString(tenantId));
+    }
+
     public String getType() {
         return type;
     }

+/**
+ * Copyright © 2016-2017 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.common.data;
+
+import com.datastax.driver.core.utils.UUIDs;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.runners.MockitoJUnitRunner;
+
+import java.util.Random;
+import java.util.UUID;
+
+/**
+ * Created by ashvayka on 14.07.17.
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class UUIDConverterTest {
+
+    @Test
+    public void basicUuidToStringTest() {
+        UUID original = UUID.fromString("58e0a7d7-eebc-11d8-9669-0800200c9a66");
+        String result = UUIDConverter.fromTimeUUID(original);
+        Assert.assertEquals("1d8eebc58e0a7d796690800200c9a66", result);
+    }
+
+    @Test
+    public void basicStringToUUIDTest() {
+        UUID result = UUIDConverter.fromString("1d8eebc58e0a7d796690800200c9a66");
+        Assert.assertEquals(UUID.fromString("58e0a7d7-eebc-11d8-9669-0800200c9a66"), result);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void nonV1UuidToStringTest() {
+        UUIDConverter.fromTimeUUID(UUID.fromString("58e0a7d7-eebc-01d8-9669-0800200c9a66"));
+    }
+
+    @Test
+    public void basicUuidComperisonTest() {
+        Random r = new Random(System.currentTimeMillis());
+        for (int i = 0; i < 100000; i++) {
+            long ts = System.currentTimeMillis() + 1000 * 60 * 60 * 24 * 365 * 10;
+            long before = (long) (Math.random() * ts);
+            long after = (long) (Math.random() * ts);
+            if (before > after) {
+                long tmp = after;
+                after = before;
+                before = tmp;
+            }
+
+            String beforeStr = UUIDConverter.fromTimeUUID(UUIDs.startOf(before));
+            String afterStr = UUIDConverter.fromTimeUUID(UUIDs.startOf(after));
+
+            if (afterStr.compareTo(beforeStr) < 0) {
+                System.out.println("Before: " + before + " | " + beforeStr);
+                System.out.println("After: " + after + " | " + afterStr);
+            }
+            Assert.assertTrue(afterStr.compareTo(beforeStr) >= 0);
+        }
+    }
+
+
+}

@@ -47,7 +47,6 @@ import javax.annotation.PostConstruct;
 import javax.annotation.PreDestroy;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.UUID;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;

@@ -33,11 +33,11 @@ import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.relation.EntityRelation;
 import org.thingsboard.server.common.data.relation.RelationTypeGroup;
-import org.thingsboard.server.dao.nosql.CassandraAbstractModelDao;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.AlarmEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractModelDao;
 import org.thingsboard.server.dao.relation.RelationDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.ArrayList;
 import java.util.List;

@@ -20,7 +20,6 @@ import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.asset.TenantAssetType;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.Dao;
-import org.thingsboard.server.dao.model.TenantAssetTypeEntity;
 
 import java.util.List;
 import java.util.Optional;

@@ -18,9 +18,9 @@ package org.thingsboard.server.dao.asset;
 import lombok.Data;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.relation.EntityRelation;
-import org.thingsboard.server.dao.relation.RelationsSearchParameters;
 import org.thingsboard.server.dao.relation.EntityRelationsQuery;
 import org.thingsboard.server.dao.relation.EntityTypeFilter;
+import org.thingsboard.server.dao.relation.RelationsSearchParameters;
 
 import javax.annotation.Nullable;
 import java.util.Collections;

@@ -51,7 +51,7 @@ import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import static org.thingsboard.server.dao.DaoUtil.*;
+import static org.thingsboard.server.dao.DaoUtil.toUUIDs;
 import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
 import static org.thingsboard.server.dao.service.Validator.*;
 

@@ -27,11 +27,11 @@ import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.asset.TenantAssetType;
 import org.thingsboard.server.common.data.page.TextPageLink;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.TenantAssetTypeEntity;
 import org.thingsboard.server.dao.model.nosql.AssetEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import javax.annotation.Nullable;
 import java.util.*;

@@ -15,8 +15,6 @@
  */
 package org.thingsboard.server.dao.attributes;
 
-import com.datastax.driver.core.ResultSet;
-import com.datastax.driver.core.ResultSetFuture;
 import com.google.common.collect.Lists;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;

@@ -26,10 +26,10 @@ import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.kv.AttributeKvEntry;
 import org.thingsboard.server.common.data.kv.BaseAttributeKvEntry;
-import org.thingsboard.server.dao.nosql.CassandraAbstractAsyncDao;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
+import org.thingsboard.server.dao.nosql.CassandraAbstractAsyncDao;
 import org.thingsboard.server.dao.timeseries.CassandraBaseTimeseriesDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import javax.annotation.PostConstruct;
 import javax.annotation.PreDestroy;

@@ -17,9 +17,10 @@ package org.thingsboard.server.dao.cassandra;
 
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
-import javax.annotation.PostConstruct;
 import org.thingsboard.server.dao.util.NoSqlDao;
 
+import javax.annotation.PostConstruct;
+
 @Component
 @NoSqlDao
 public class CassandraCluster extends AbstractCassandraCluster {

@@ -27,11 +27,11 @@ import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.plugin.ComponentDescriptor;
 import org.thingsboard.server.common.data.plugin.ComponentScope;
 import org.thingsboard.server.common.data.plugin.ComponentType;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.ComponentDescriptorEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.Arrays;
 import java.util.List;

@@ -20,11 +20,11 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.page.TextPageLink;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.CustomerEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.Arrays;
 import java.util.List;

@@ -15,12 +15,12 @@
  */
 package org.thingsboard.server.dao.customer;
 
-import java.util.Optional;
 import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.Dao;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
 
 /**

@@ -15,12 +15,6 @@
  */
 package org.thingsboard.server.dao.customer;
 
-import static org.thingsboard.server.dao.service.Validator.validateId;
-
-import java.io.IOException;
-import java.util.List;
-import java.util.Optional;
-
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.util.concurrent.ListenableFuture;
@@ -45,6 +39,12 @@ import org.thingsboard.server.dao.service.Validator;
 import org.thingsboard.server.dao.tenant.TenantDao;
 import org.thingsboard.server.dao.user.UserService;
 
+import java.io.IOException;
+import java.util.List;
+import java.util.Optional;
+
+import static org.thingsboard.server.dao.service.Validator.validateId;
+
 @Service
 @Slf4j
 public class CustomerServiceImpl extends AbstractEntityService implements CustomerService {

@@ -17,9 +17,9 @@ package org.thingsboard.server.dao.dashboard;
 
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Dashboard;
+import org.thingsboard.server.dao.model.nosql.DashboardEntity;
 import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.util.NoSqlDao;
-import org.thingsboard.server.dao.model.nosql.DashboardEntity;
 
 import static org.thingsboard.server.dao.model.ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME;
 

@@ -19,10 +19,10 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.DashboardInfo;
 import org.thingsboard.server.common.data.page.TextPageLink;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.nosql.DashboardInfoEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.Arrays;
 import java.util.Collections;

@@ -19,11 +19,11 @@ import com.datastax.driver.core.querybuilder.Select.Where;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
-import org.thingsboard.server.dao.nosql.CassandraAbstractModelDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.DeviceCredentialsEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractModelDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.UUID;
 

@@ -27,11 +27,11 @@ import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.TenantDeviceType;
 import org.thingsboard.server.common.data.page.TextPageLink;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.TenantDeviceTypeEntity;
 import org.thingsboard.server.dao.model.nosql.DeviceEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import javax.annotation.Nullable;
 import java.util.*;

@@ -20,7 +20,6 @@ import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.TenantDeviceType;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.Dao;
-import org.thingsboard.server.dao.model.TenantDeviceTypeEntity;
 
 import java.util.List;
 import java.util.Optional;

@@ -21,7 +21,7 @@ import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
-import org.thingsboard.server.common.data.*;
+import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.alarm.AlarmId;
 import org.thingsboard.server.common.data.id.*;
 import org.thingsboard.server.dao.alarm.AlarmService;

@@ -28,11 +28,11 @@ import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.EventId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TimePageLink;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTimeDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.EventEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTimeDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.Arrays;
 import java.util.List;

+/**
+ * Copyright © 2016-2017 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.model;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.UUIDConverter;
+
+import javax.persistence.Column;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import java.util.UUID;
+
+/**
+ * Created by ashvayka on 13.07.17.
+ */
+@Data
+@MappedSuperclass
+public abstract class BaseSqlEntity<D> implements BaseEntity<D> {
+
+    @Id
+    @Column(name = ModelConstants.ID_PROPERTY)
+    protected String id;
+
+    @Override
+    public UUID getId() {
+        if (id == null) {
+            return null;
+        }
+        return UUIDConverter.fromString(id);
+    }
+
+    public void setId(UUID id) {
+        this.id = UUIDConverter.fromTimeUUID(id);
+    }
+
+    protected UUID toUUID(String src){
+        return UUIDConverter.fromString(src);
+    }
+
+    protected String toString(UUID timeUUID){
+        return UUIDConverter.fromTimeUUID(timeUUID);
+    }
+
+}

@@ -15,18 +15,20 @@
  */
 package org.thingsboard.server.dao.model;
 
-import java.util.UUID;
-
 import com.datastax.driver.core.utils.UUIDs;
 import org.apache.commons.lang3.ArrayUtils;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.kv.Aggregation;
 
+import java.util.UUID;
+
 public class ModelConstants {
 
     private ModelConstants() {
     }
 
     public static UUID NULL_UUID = UUIDs.startOf(0);
+    public static String NULL_UUID_STR = UUIDConverter.fromTimeUUID(NULL_UUID);
 
     /**
      * Generic constants.

@@ -15,24 +15,20 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import static org.thingsboard.server.dao.model.ModelConstants.ADMIN_SETTINGS_COLUMN_FAMILY_NAME;
-import static org.thingsboard.server.dao.model.ModelConstants.ADMIN_SETTINGS_JSON_VALUE_PROPERTY;
-import static org.thingsboard.server.dao.model.ModelConstants.ADMIN_SETTINGS_KEY_PROPERTY;
-import static org.thingsboard.server.dao.model.ModelConstants.ID_PROPERTY;
-
-import java.util.UUID;
-
-import org.thingsboard.server.common.data.AdminSettings;
-import org.thingsboard.server.common.data.id.AdminSettingsId;
-import org.thingsboard.server.dao.model.BaseEntity;
-import org.thingsboard.server.dao.model.type.JsonCodec;
-
 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 org.thingsboard.server.common.data.AdminSettings;
+import org.thingsboard.server.common.data.id.AdminSettingsId;
+import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.type.JsonCodec;
+
+import java.util.UUID;
+
+import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = ADMIN_SETTINGS_COLUMN_FAMILY_NAME)
 public final class AdminSettingsEntity implements BaseEntity<AdminSettings> {

@@ -15,20 +15,19 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
-import org.thingsboard.server.common.data.Customer;
-import org.thingsboard.server.common.data.id.CustomerId;
-import org.thingsboard.server.common.data.id.TenantId;
-import org.thingsboard.server.dao.model.SearchTextEntity;
-import org.thingsboard.server.dao.model.type.JsonCodec;
-
 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 org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.SearchTextEntity;
+import org.thingsboard.server.dao.model.type.JsonCodec;
+
+import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 

@@ -15,8 +15,12 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
+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 org.thingsboard.server.common.data.Dashboard;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
@@ -24,12 +28,7 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
-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 java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 

@@ -15,19 +15,18 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
+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 org.thingsboard.server.common.data.DashboardInfo;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 
-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 java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 

@@ -15,8 +15,11 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
+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 org.thingsboard.server.common.data.id.DeviceCredentialsId;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
@@ -24,11 +27,7 @@ import org.thingsboard.server.common.data.security.DeviceCredentialsType;
 import org.thingsboard.server.dao.model.BaseEntity;
 import org.thingsboard.server.dao.model.type.DeviceCredentialsTypeCodec;
 
-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 java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 

@@ -28,10 +28,10 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
-import static org.thingsboard.server.dao.model.ModelConstants.*;
-
 import java.util.UUID;
 
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
 @Table(name = DEVICE_COLUMN_FAMILY_NAME)
 public final class DeviceEntity implements SearchTextEntity<Device> {
 

@@ -26,11 +26,11 @@ import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.ComponentLifecycleStateCodec;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
-import static org.thingsboard.server.dao.model.ModelConstants.*;
-
 import java.util.Objects;
 import java.util.UUID;
 
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
 @Table(name = PLUGIN_COLUMN_FAMILY_NAME)
 public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
 

@@ -30,12 +30,12 @@ import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.ComponentLifecycleStateCodec;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
-import static org.thingsboard.server.dao.model.ModelConstants.*;
-
 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)
 public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
 

@@ -15,19 +15,19 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
-import org.thingsboard.server.common.data.Tenant;
-import org.thingsboard.server.common.data.id.TenantId;
-import org.thingsboard.server.dao.model.SearchTextEntity;
-import org.thingsboard.server.dao.model.type.JsonCodec;
-
 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 org.thingsboard.server.common.data.Tenant;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.SearchTextEntity;
+import org.thingsboard.server.dao.model.type.JsonCodec;
+
+import java.util.UUID;
+
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = TENANT_COLUMN_FAMILY_NAME)

@@ -15,18 +15,18 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
-import org.thingsboard.server.common.data.id.UserCredentialsId;
-import org.thingsboard.server.common.data.id.UserId;
-import org.thingsboard.server.common.data.security.UserCredentials;
-
 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 org.thingsboard.server.common.data.id.UserCredentialsId;
+import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.common.data.security.UserCredentials;
 import org.thingsboard.server.dao.model.BaseEntity;
+
+import java.util.UUID;
+
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = USER_CREDENTIALS_COLUMN_FAMILY_NAME)

@@ -15,8 +15,12 @@
  */
 package org.thingsboard.server.dao.model.nosql;
 
-import java.util.UUID;
-
+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 org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -26,12 +30,8 @@ import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.AuthorityCodec;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
-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 java.util.UUID;
+
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Table(name = USER_COLUMN_FAMILY_NAME)

@@ -26,10 +26,11 @@ import org.thingsboard.server.common.data.id.WidgetTypeId;
 import org.thingsboard.server.common.data.widget.WidgetType;
 import org.thingsboard.server.dao.model.BaseEntity;
 import org.thingsboard.server.dao.model.type.JsonCodec;
-import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 import java.util.UUID;
 
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
 @Table(name = WIDGET_TYPE_COLUMN_FAMILY_NAME)
 public final class WidgetTypeEntity implements BaseEntity<WidgetType> {
 

@@ -25,11 +25,12 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetsBundleId;
 import org.thingsboard.server.common.data.widget.WidgetsBundle;
 import org.thingsboard.server.dao.model.SearchTextEntity;
-import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 import java.nio.ByteBuffer;
 import java.util.UUID;
 
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
 @Table(name = WIDGETS_BUNDLE_COLUMN_FAMILY_NAME)
 public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle> {
 

@@ -18,31 +18,33 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.AdminSettings;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.AdminSettingsId;
 import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ADMIN_SETTINGS_COLUMN_FAMILY_NAME)
-public final class AdminSettingsEntity implements BaseEntity<AdminSettings> {
+public final class AdminSettingsEntity extends BaseSqlEntity<AdminSettings> implements BaseEntity<AdminSettings> {
 
     @Transient
     private static final long serialVersionUID = 842759712850362147L;
 
-    @Id
-    @Column(name = ID_PROPERTY)
-    private UUID id;
-    
     @Column(name = ADMIN_SETTINGS_KEY_PROPERTY)
     private String key;
 
@@ -56,26 +58,16 @@ public final class AdminSettingsEntity implements BaseEntity<AdminSettings> {
 
     public AdminSettingsEntity(AdminSettings adminSettings) {
         if (adminSettings.getId() != null) {
-            this.id = adminSettings.getId().getId();
+            this.setId(adminSettings.getId().getId());
         }
         this.key = adminSettings.getKey();
         this.jsonValue = adminSettings.getJsonValue();
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-    
-    @Override
     public AdminSettings toData() {
-        AdminSettings adminSettings = new AdminSettings(new AdminSettingsId(id));
-        adminSettings.setCreatedTime(UUIDs.unixTimestamp(id));
+        AdminSettings adminSettings = new AdminSettings(new AdminSettingsId(UUIDConverter.fromString(id)));
+        adminSettings.setCreatedTime(UUIDs.unixTimestamp(UUIDConverter.fromString(id)));
         adminSettings.setKey(key);
         adminSettings.setJsonValue(jsonValue);
         return adminSettings;

@@ -18,9 +18,11 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmId;
 import org.thingsboard.server.common.data.alarm.AlarmSeverity;
@@ -28,32 +30,29 @@ import org.thingsboard.server.common.data.alarm.AlarmStatus;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ALARM_COLUMN_FAMILY_NAME)
-public final class AlarmEntity implements BaseEntity<Alarm> {
+public final class AlarmEntity extends BaseSqlEntity<Alarm> implements BaseEntity<Alarm> {
 
     @Transient
     private static final long serialVersionUID = -339979717281685984L;
 
-    @Id
-    @Column(name = ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ALARM_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ALARM_ORIGINATOR_ID_PROPERTY)
-    private UUID originatorId;
+    private String originatorId;
 
     @Column(name = ALARM_ORIGINATOR_TYPE_PROPERTY)
     private EntityType originatorType;
@@ -94,13 +93,13 @@ public final class AlarmEntity implements BaseEntity<Alarm> {
 
     public AlarmEntity(Alarm alarm) {
         if (alarm.getId() != null) {
-            this.id = alarm.getId().getId();
+            this.setId(alarm.getId().getId());
         }
         if (alarm.getTenantId() != null) {
-            this.tenantId = alarm.getTenantId().getId();
+            this.tenantId = UUIDConverter.fromTimeUUID(alarm.getTenantId().getId());
         }
         this.type = alarm.getType();
-        this.originatorId = alarm.getOriginator().getId();
+        this.originatorId = UUIDConverter.fromTimeUUID(alarm.getOriginator().getId());
         this.originatorType = alarm.getOriginator().getEntityType();
         this.type = alarm.getType();
         this.severity = alarm.getSeverity();
@@ -115,12 +114,12 @@ public final class AlarmEntity implements BaseEntity<Alarm> {
 
     @Override
     public Alarm toData() {
-        Alarm alarm = new Alarm(new AlarmId(id));
-        alarm.setCreatedTime(UUIDs.unixTimestamp(id));
+        Alarm alarm = new Alarm(new AlarmId(UUIDConverter.fromString(id)));
+        alarm.setCreatedTime(UUIDs.unixTimestamp(UUIDConverter.fromString(id)));
         if (tenantId != null) {
-            alarm.setTenantId(new TenantId(tenantId));
+            alarm.setTenantId(new TenantId(UUIDConverter.fromString(tenantId)));
         }
-        alarm.setOriginator(EntityIdFactory.getByTypeAndUuid(originatorType, originatorId));
+        alarm.setOriginator(EntityIdFactory.getByTypeAndUuid(originatorType, UUIDConverter.fromString(originatorId)));
         alarm.setType(type);
         alarm.setSeverity(severity);
         alarm.setStatus(status);

@@ -18,39 +18,41 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.AssetId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ASSET_COLUMN_FAMILY_NAME)
-public final class AssetEntity implements SearchTextEntity<Asset> {
+public final class AssetEntity extends BaseSqlEntity<Asset> implements SearchTextEntity<Asset> {
 
     @Transient
     private static final long serialVersionUID = -4089175869616037592L;
 
-    @Id
-    @Column(name = ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ASSET_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ASSET_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
+    private String customerId;
 
     @Column(name = ASSET_NAME_PROPERTY)
     private String name;
@@ -71,13 +73,13 @@ public final class AssetEntity implements SearchTextEntity<Asset> {
 
     public AssetEntity(Asset asset) {
         if (asset.getId() != null) {
-            this.id = asset.getId().getId();
+            this.setId(asset.getId().getId());
         }
         if (asset.getTenantId() != null) {
-            this.tenantId = asset.getTenantId().getId();
+            this.tenantId = UUIDConverter.fromTimeUUID(asset.getTenantId().getId());
         }
         if (asset.getCustomerId() != null) {
-            this.customerId = asset.getCustomerId().getId();
+            this.customerId = UUIDConverter.fromTimeUUID(asset.getCustomerId().getId());
         }
         this.name = asset.getName();
         this.type = asset.getType();
@@ -100,13 +102,13 @@ public final class AssetEntity implements SearchTextEntity<Asset> {
 
     @Override
     public Asset toData() {
-        Asset asset = new Asset(new AssetId(id));
-        asset.setCreatedTime(UUIDs.unixTimestamp(id));
+        Asset asset = new Asset(new AssetId(UUIDConverter.fromString(id)));
+        asset.setCreatedTime(UUIDs.unixTimestamp(UUIDConverter.fromString(id)));
         if (tenantId != null) {
-            asset.setTenantId(new TenantId(tenantId));
+            asset.setTenantId(new TenantId(UUIDConverter.fromString(tenantId)));
         }
         if (customerId != null) {
-            asset.setCustomerId(new CustomerId(customerId));
+            asset.setCustomerId(new CustomerId(UUIDConverter.fromString(customerId)));
         }
         asset.setName(name);
         asset.setType(type);

@@ -21,14 +21,13 @@ import lombok.NoArgsConstructor;
 import org.thingsboard.server.common.data.EntityType;
 
 import java.io.Serializable;
-import java.util.UUID;
 
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
 public class AttributeKvCompositeKey implements Serializable {
     private EntityType entityType;
-    private UUID entityId;
+    private String entityId;
     private String attributeType;
     private String attributeKey;
 }

@@ -22,7 +22,6 @@ import org.thingsboard.server.dao.model.ToData;
 
 import javax.persistence.*;
 import java.io.Serializable;
-import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
@@ -39,7 +38,7 @@ public class AttributeKvEntity implements ToData<AttributeKvEntry>, Serializable
 
     @Id
     @Column(name = ENTITY_ID_COLUMN)
-    private UUID entityId;
+    private String entityId;
 
     @Id
     @Column(name = ATTRIBUTE_TYPE_COLUMN)

@@ -17,32 +17,30 @@ package org.thingsboard.server.dao.model.sql;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.id.ComponentDescriptorId;
 import org.thingsboard.server.common.data.plugin.ComponentDescriptor;
 import org.thingsboard.server.common.data.plugin.ComponentScope;
 import org.thingsboard.server.common.data.plugin.ComponentType;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.COMPONENT_DESCRIPTOR_COLUMN_FAMILY_NAME)
-public class ComponentDescriptorEntity implements SearchTextEntity<ComponentDescriptor> {
+public class ComponentDescriptorEntity extends BaseSqlEntity<ComponentDescriptor> implements SearchTextEntity<ComponentDescriptor> {
 
     @Transient
     private static final long serialVersionUID = 253590350877992402L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Enumerated(EnumType.STRING)
     @Column(name = ModelConstants.COMPONENT_DESCRIPTOR_TYPE_PROPERTY)
     private ComponentType type;
@@ -72,7 +70,7 @@ public class ComponentDescriptorEntity implements SearchTextEntity<ComponentDesc
 
     public ComponentDescriptorEntity(ComponentDescriptor component) {
         if (component.getId() != null) {
-            this.id = component.getId().getId();
+            this.setId(component.getId().getId());
         }
         this.actions = component.getActions();
         this.type = component.getType();
@@ -85,7 +83,7 @@ public class ComponentDescriptorEntity implements SearchTextEntity<ComponentDesc
 
     @Override
     public ComponentDescriptor toData() {
-        ComponentDescriptor data = new ComponentDescriptor(new ComponentDescriptorId(id));
+        ComponentDescriptor data = new ComponentDescriptor(new ComponentDescriptorId(this.getId()));
         data.setType(type);
         data.setScope(scope);
         data.setName(this.getName());
@@ -95,16 +93,6 @@ public class ComponentDescriptorEntity implements SearchTextEntity<ComponentDesc
         return data;
     }
 
-    @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
     public String getSearchText() {
         return searchText;
     }

@@ -18,33 +18,35 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.CUSTOMER_COLUMN_FAMILY_NAME)
-public final class CustomerEntity implements SearchTextEntity<Customer> {
+public final class CustomerEntity extends BaseSqlEntity<Customer> implements SearchTextEntity<Customer> {
 
     @Transient
     private static final long serialVersionUID = 8951342124082981556L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-    
     @Column(name = ModelConstants.CUSTOMER_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
     
     @Column(name = ModelConstants.CUSTOMER_TITLE_PROPERTY)
     private String title;
@@ -86,9 +88,9 @@ public final class CustomerEntity implements SearchTextEntity<Customer> {
 
     public CustomerEntity(Customer customer) {
         if (customer.getId() != null) {
-            this.id = customer.getId().getId();
+            this.setId(customer.getId().getId());
         }
-        this.tenantId = customer.getTenantId().getId();
+        this.tenantId = UUIDConverter.fromTimeUUID(customer.getTenantId().getId());
         this.title = customer.getTitle();
         this.country = customer.getCountry();
         this.state = customer.getState();
@@ -102,16 +104,6 @@ public final class CustomerEntity implements SearchTextEntity<Customer> {
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
-    @Override
     public String getSearchTextSource() {
         return title;
     }
@@ -123,9 +115,9 @@ public final class CustomerEntity implements SearchTextEntity<Customer> {
 
     @Override
     public Customer toData() {
-        Customer customer = new Customer(new CustomerId(id));
-        customer.setCreatedTime(UUIDs.unixTimestamp(id));
-        customer.setTenantId(new TenantId(tenantId));
+        Customer customer = new Customer(new CustomerId(getId()));
+        customer.setCreatedTime(UUIDs.unixTimestamp(getId()));
+        customer.setTenantId(new TenantId(UUIDConverter.fromString(tenantId)));
         customer.setTitle(title);
         customer.setCountry(country);
         customer.setState(state);

@@ -18,37 +18,38 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.Dashboard;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME)
-public final class DashboardEntity implements SearchTextEntity<Dashboard> {
+public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements SearchTextEntity<Dashboard> {
 
     @Transient
     private static final long serialVersionUID = -4838084363113078898L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-    
     @Column(name = ModelConstants.DASHBOARD_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.DASHBOARD_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
+    private String customerId;
 
     @Column(name = ModelConstants.DASHBOARD_TITLE_PROPERTY)
     private String title;
@@ -66,13 +67,13 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
 
     public DashboardEntity(Dashboard dashboard) {
         if (dashboard.getId() != null) {
-            this.id = dashboard.getId().getId();
+            this.setId(dashboard.getId().getId());
         }
         if (dashboard.getTenantId() != null) {
-            this.tenantId = dashboard.getTenantId().getId();
+            this.tenantId = toString(dashboard.getTenantId().getId());
         }
         if (dashboard.getCustomerId() != null) {
-            this.customerId = dashboard.getCustomerId().getId();
+            this.customerId = toString(dashboard.getCustomerId().getId());
         }
         this.title = dashboard.getTitle();
         this.configuration = dashboard.getConfiguration();
@@ -90,13 +91,13 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
 
     @Override
     public Dashboard toData() {
-        Dashboard dashboard = new Dashboard(new DashboardId(id));
-        dashboard.setCreatedTime(UUIDs.unixTimestamp(id));
+        Dashboard dashboard = new Dashboard(new DashboardId(this.getId()));
+        dashboard.setCreatedTime(UUIDs.unixTimestamp(this.getId()));
         if (tenantId != null) {
-            dashboard.setTenantId(new TenantId(tenantId));
+            dashboard.setTenantId(new TenantId(toUUID(tenantId)));
         }
         if (customerId != null) {
-            dashboard.setCustomerId(new CustomerId(customerId));
+            dashboard.setCustomerId(new CustomerId(toUUID(customerId)));
         }
         dashboard.setTitle(title);
         dashboard.setConfiguration(configuration);

@@ -17,33 +17,34 @@ package org.thingsboard.server.dao.model.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.DashboardInfo;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @Table(name = ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME)
-public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
+public class DashboardInfoEntity extends BaseSqlEntity<DashboardInfo> implements SearchTextEntity<DashboardInfo> {
 
     @Transient
     private static final long serialVersionUID = -5525675905528050250L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ModelConstants.DASHBOARD_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.DASHBOARD_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
+    private String customerId;
 
     @Column(name = ModelConstants.DASHBOARD_TITLE_PROPERTY)
     private String title;
@@ -57,13 +58,13 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
 
     public DashboardInfoEntity(DashboardInfo dashboardInfo) {
         if (dashboardInfo.getId() != null) {
-            this.id = dashboardInfo.getId().getId();
+            this.setId(dashboardInfo.getId().getId());
         }
         if (dashboardInfo.getTenantId() != null) {
-            this.tenantId = dashboardInfo.getTenantId().getId();
+            this.tenantId = toString(dashboardInfo.getTenantId().getId());
         }
         if (dashboardInfo.getCustomerId() != null) {
-            this.customerId = dashboardInfo.getCustomerId().getId();
+            this.customerId = toString(dashboardInfo.getCustomerId().getId());
         }
         this.title = dashboardInfo.getTitle();
     }
@@ -84,13 +85,13 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
 
     @Override
     public DashboardInfo toData() {
-        DashboardInfo dashboardInfo = new DashboardInfo(new DashboardId(id));
-        dashboardInfo.setCreatedTime(UUIDs.unixTimestamp(id));
+        DashboardInfo dashboardInfo = new DashboardInfo(new DashboardId(getId()));
+        dashboardInfo.setCreatedTime(UUIDs.unixTimestamp(getId()));
         if (tenantId != null) {
-            dashboardInfo.setTenantId(new TenantId(tenantId));
+            dashboardInfo.setTenantId(new TenantId(toUUID(tenantId)));
         }
         if (customerId != null) {
-            dashboardInfo.setCustomerId(new CustomerId(customerId));
+            dashboardInfo.setCustomerId(new CustomerId(toUUID(customerId)));
         }
         dashboardInfo.setTitle(title);
         return dashboardInfo;

@@ -17,29 +17,28 @@ package org.thingsboard.server.dao.model.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.thingsboard.server.common.data.id.DeviceCredentialsId;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
 import org.thingsboard.server.common.data.security.DeviceCredentialsType;
 import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @Table(name = ModelConstants.DEVICE_CREDENTIALS_COLUMN_FAMILY_NAME)
-public final class DeviceCredentialsEntity implements BaseEntity<DeviceCredentials> {
+public final class DeviceCredentialsEntity extends BaseSqlEntity<DeviceCredentials> implements BaseEntity<DeviceCredentials> {
 
     @Transient
     private static final long serialVersionUID = -2512362753385470464L;
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-    
+
     @Column(name = ModelConstants.DEVICE_CREDENTIALS_DEVICE_ID_PROPERTY)
-    private UUID deviceId;
+    private String deviceId;
 
     @Enumerated(EnumType.STRING)
     @Column(name = ModelConstants.DEVICE_CREDENTIALS_CREDENTIALS_TYPE_PROPERTY)
@@ -57,22 +56,22 @@ public final class DeviceCredentialsEntity implements BaseEntity<DeviceCredentia
 
     public DeviceCredentialsEntity(DeviceCredentials deviceCredentials) {
         if (deviceCredentials.getId() != null) {
-            this.id = deviceCredentials.getId().getId();
+            this.setId(deviceCredentials.getId().getId());
         }
         if (deviceCredentials.getDeviceId() != null) {
-            this.deviceId = deviceCredentials.getDeviceId().getId();
+            this.deviceId = toString(deviceCredentials.getDeviceId().getId());
         }
         this.credentialsType = deviceCredentials.getCredentialsType();
         this.credentialsId = deviceCredentials.getCredentialsId();
-        this.credentialsValue = deviceCredentials.getCredentialsValue(); 
+        this.credentialsValue = deviceCredentials.getCredentialsValue();
     }
-    
+
     @Override
     public DeviceCredentials toData() {
-        DeviceCredentials deviceCredentials = new DeviceCredentials(new DeviceCredentialsId(id));
-        deviceCredentials.setCreatedTime(UUIDs.unixTimestamp(id));
+        DeviceCredentials deviceCredentials = new DeviceCredentials(new DeviceCredentialsId(getId()));
+        deviceCredentials.setCreatedTime(UUIDs.unixTimestamp(getId()));
         if (deviceId != null) {
-            deviceCredentials.setDeviceId(new DeviceId(deviceId));
+            deviceCredentials.setDeviceId(new DeviceId(toUUID(deviceId)));
         }
         deviceCredentials.setCredentialsType(credentialsType);
         deviceCredentials.setCredentialsId(credentialsId);

@@ -18,44 +18,45 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.Device;
 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 org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.DEVICE_COLUMN_FAMILY_NAME)
-public final class DeviceEntity implements SearchTextEntity<Device> {
+public final class DeviceEntity extends BaseSqlEntity<Device> implements SearchTextEntity<Device> {
 
     @Transient
     private static final long serialVersionUID = 8050086401213322856L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-    
     @Column(name = ModelConstants.DEVICE_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.DEVICE_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
+    private String customerId;
 
     @Column(name = ModelConstants.DEVICE_TYPE_PROPERTY)
     private String type;
 
     @Column(name = ModelConstants.DEVICE_NAME_PROPERTY)
     private String name;
-    
+
     @Column(name = ModelConstants.SEARCH_TEXT_PROPERTY)
     private String searchText;
 
@@ -69,13 +70,13 @@ public final class DeviceEntity implements SearchTextEntity<Device> {
 
     public DeviceEntity(Device device) {
         if (device.getId() != null) {
-            this.id = device.getId().getId();
+            this.setId(device.getId().getId());
         }
         if (device.getTenantId() != null) {
-            this.tenantId = device.getTenantId().getId();
+            this.tenantId = toString(device.getTenantId().getId());
         }
         if (device.getCustomerId() != null) {
-            this.customerId = device.getCustomerId().getId();
+            this.customerId = toString(device.getCustomerId().getId());
         }
         this.name = device.getName();
         this.type = device.getType();
@@ -91,16 +92,16 @@ public final class DeviceEntity implements SearchTextEntity<Device> {
     public void setSearchText(String searchText) {
         this.searchText = searchText;
     }
-    
+
     @Override
     public Device toData() {
-        Device device = new Device(new DeviceId(id));
-        device.setCreatedTime(UUIDs.unixTimestamp(id));
+        Device device = new Device(new DeviceId(getId()));
+        device.setCreatedTime(UUIDs.unixTimestamp(getId()));
         if (tenantId != null) {
-            device.setTenantId(new TenantId(tenantId));
+            device.setTenantId(new TenantId(toUUID(tenantId)));
         }
         if (customerId != null) {
-            device.setCustomerId(new CustomerId(customerId));
+            device.setCustomerId(new CustomerId(toUUID(customerId)));
         }
         device.setName(name);
         device.setType(type);

@@ -18,43 +18,43 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.Event;
-import org.thingsboard.server.common.data.id.*;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
+import org.thingsboard.server.common.data.id.EventId;
+import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = EVENT_COLUMN_FAMILY_NAME)
 @NoArgsConstructor
-public class EventEntity implements BaseEntity<Event> {
+public class EventEntity  extends BaseSqlEntity<Event> implements BaseEntity<Event> {
 
     @Transient
     private static final long serialVersionUID = -5717830061727466727L;
 
-    @Id
-    @Column(name = ID_PROPERTY)
-    private UUID id;
-
     @Column(name = EVENT_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Enumerated(EnumType.STRING)
     @Column(name = EVENT_ENTITY_TYPE_PROPERTY)
     private EntityType entityType;
 
     @Column(name = EVENT_ENTITY_ID_PROPERTY)
-    private UUID entityId;
+    private String entityId;
 
     @Column(name = EVENT_TYPE_PROPERTY)
     private String eventType;
@@ -68,52 +68,27 @@ public class EventEntity implements BaseEntity<Event> {
 
     public EventEntity(Event event) {
         if (event.getId() != null) {
-            this.id = event.getId().getId();
+            this.setId(event.getId().getId());
         }
         if (event.getTenantId() != null) {
-            this.tenantId = event.getTenantId().getId();
+            this.tenantId = toString(event.getTenantId().getId());
         }
         if (event.getEntityId() != null) {
             this.entityType = event.getEntityId().getEntityType();
-            this.entityId = event.getEntityId().getId();
+            this.entityId = toString(event.getEntityId().getId());
         }
         this.eventType = event.getType();
         this.eventUid = event.getUid();
         this.body = event.getBody();
     }
 
-    @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
 
     @Override
     public Event toData() {
-        Event event = new Event(new EventId(id));
-        event.setCreatedTime(UUIDs.unixTimestamp(id));
-        event.setTenantId(new TenantId(tenantId));
-        switch (entityType) {
-            case TENANT:
-                event.setEntityId(new TenantId(entityId));
-                break;
-            case DEVICE:
-                event.setEntityId(new DeviceId(entityId));
-                break;
-            case CUSTOMER:
-                event.setEntityId(new CustomerId(entityId));
-                break;
-            case RULE:
-                event.setEntityId(new RuleId(entityId));
-                break;
-            case PLUGIN:
-                event.setEntityId(new PluginId(entityId));
-                break;
-        }
+        Event event = new Event(new EventId(getId()));
+        event.setCreatedTime(UUIDs.unixTimestamp(getId()));
+        event.setTenantId(new TenantId(toUUID(tenantId)));
+        event.setEntityId(EntityIdFactory.getByTypeAndUuid(entityType, toUUID(entityId)));
         event.setBody(body);
         event.setType(eventType);
         event.setUid(eventUid);

@@ -18,36 +18,38 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.id.PluginId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
 import org.thingsboard.server.common.data.plugin.PluginMetaData;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
+
+import static org.thingsboard.server.common.data.UUIDConverter.fromString;
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.PLUGIN_COLUMN_FAMILY_NAME)
-public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
+public class PluginMetaDataEntity extends BaseSqlEntity<PluginMetaData> implements SearchTextEntity<PluginMetaData> {
 
     @Transient
     private static final long serialVersionUID = -6164321050824823149L;
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
 
     @Column(name = ModelConstants.PLUGIN_API_TOKEN_PROPERTY)
     private String apiToken;
 
     @Column(name = ModelConstants.PLUGIN_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.PLUGIN_NAME_PROPERTY)
     private String name;
@@ -78,9 +80,9 @@ public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
 
     public PluginMetaDataEntity(PluginMetaData pluginMetaData) {
         if (pluginMetaData.getId() != null) {
-            this.id = pluginMetaData.getId().getId();
+            this.setId(pluginMetaData.getId().getId());
         }
-        this.tenantId = pluginMetaData.getTenantId().getId();
+        this.tenantId = fromTimeUUID(pluginMetaData.getTenantId().getId());
         this.apiToken = pluginMetaData.getApiToken();
         this.clazz = pluginMetaData.getClazz();
         this.name = pluginMetaData.getName();
@@ -102,20 +104,10 @@ public class PluginMetaDataEntity implements SearchTextEntity<PluginMetaData> {
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
-    @Override
     public PluginMetaData toData() {
-        PluginMetaData data = new PluginMetaData(new PluginId(id));
-        data.setTenantId(new TenantId(tenantId));
-        data.setCreatedTime(UUIDs.unixTimestamp(id));
+        PluginMetaData data = new PluginMetaData(new PluginId(getId()));
+        data.setTenantId(new TenantId(fromString(tenantId)));
+        data.setCreatedTime(UUIDs.unixTimestamp(getId()));
         data.setName(name);
         data.setClazz(clazz);
         data.setPublicAccess(publicAccess);

@@ -18,11 +18,11 @@ package org.thingsboard.server.dao.model.sql;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.relation.EntityRelation;
 
 import javax.persistence.Transient;
 import java.io.Serializable;
-import java.util.UUID;
 
 @NoArgsConstructor
 @AllArgsConstructor
@@ -32,17 +32,17 @@ public class RelationCompositeKey implements Serializable {
     @Transient
     private static final long serialVersionUID = -4089175869616037592L;
 
-    private UUID fromId;
+    private String fromId;
     private String fromType;
-    private UUID toId;
+    private String toId;
     private String toType;
     private String relationType;
     private String relationTypeGroup;
 
     public RelationCompositeKey(EntityRelation relation) {
-        this.fromId = relation.getFrom().getId();
+        this.fromId = UUIDConverter.fromTimeUUID(relation.getFrom().getId());
         this.fromType = relation.getFrom().getEntityType().name();
-        this.toId = relation.getTo().getId();
+        this.toId = UUIDConverter.fromTimeUUID(relation.getTo().getId());
         this.toType = relation.getTo().getEntityType().name();
         this.relationType = relation.getType();
         this.relationTypeGroup = relation.getTypeGroup().name();

@@ -19,6 +19,7 @@ import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.relation.EntityRelation;
 import org.thingsboard.server.common.data.relation.RelationTypeGroup;
@@ -26,7 +27,6 @@ import org.thingsboard.server.dao.model.ToData;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
@@ -39,7 +39,7 @@ public final class RelationEntity implements ToData<EntityRelation> {
 
     @Id
     @Column(name = RELATION_FROM_ID_PROPERTY)
-    private UUID fromId;
+    private String fromId;
 
     @Id
     @Column(name = RELATION_FROM_TYPE_PROPERTY)
@@ -47,7 +47,7 @@ public final class RelationEntity implements ToData<EntityRelation> {
 
     @Id
     @Column(name = RELATION_TO_ID_PROPERTY)
-    private UUID toId;
+    private String toId;
 
     @Id
     @Column(name = RELATION_TO_TYPE_PROPERTY)
@@ -71,11 +71,11 @@ public final class RelationEntity implements ToData<EntityRelation> {
 
     public RelationEntity(EntityRelation relation) {
         if (relation.getTo() != null) {
-            this.toId = relation.getTo().getId();
+            this.toId = UUIDConverter.fromTimeUUID(relation.getTo().getId());
             this.toType = relation.getTo().getEntityType().name();
         }
         if (relation.getFrom() != null) {
-            this.fromId = relation.getFrom().getId();
+            this.fromId = UUIDConverter.fromTimeUUID(relation.getFrom().getId());
             this.fromType = relation.getFrom().getEntityType().name();
         }
         this.relationType = relation.getType();
@@ -87,10 +87,10 @@ public final class RelationEntity implements ToData<EntityRelation> {
     public EntityRelation toData() {
         EntityRelation relation = new EntityRelation();
         if (toId != null && toType != null) {
-            relation.setTo(EntityIdFactory.getByTypeAndUuid(toType, toId));
+            relation.setTo(EntityIdFactory.getByTypeAndUuid(toType, UUIDConverter.fromString(toId)));
         }
         if (fromId != null && fromType != null) {
-            relation.setFrom(EntityIdFactory.getByTypeAndUuid(fromType, fromId));
+            relation.setFrom(EntityIdFactory.getByTypeAndUuid(fromType, UUIDConverter.fromString(fromId)));
         }
         relation.setType(relationType);
         relation.setTypeGroup(RelationTypeGroup.valueOf(relationTypeGroup));

@@ -18,6 +18,7 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.id.RuleId;
@@ -25,27 +26,25 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
 import org.thingsboard.server.common.data.rule.RuleMetaData;
 import org.thingsboard.server.dao.DaoUtil;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.RULE_COLUMN_FAMILY_NAME)
-public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
+public class RuleMetaDataEntity extends BaseSqlEntity<RuleMetaData> implements SearchTextEntity<RuleMetaData> {
 
     @Transient
     private static final long serialVersionUID = -1506905644259463884L;
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
 
     @Column(name = ModelConstants.RULE_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.RULE_NAME_PROPERTY)
     private String name;
@@ -84,9 +83,9 @@ public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
 
     public RuleMetaDataEntity(RuleMetaData rule) {
         if (rule.getId() != null) {
-            this.id = rule.getUuidId();
+            this.setId(rule.getUuidId());
         }
-        this.tenantId = DaoUtil.getId(rule.getTenantId());
+        this.tenantId = toString(DaoUtil.getId(rule.getTenantId()));
         this.name = rule.getName();
         this.pluginToken = rule.getPluginToken();
         this.state = rule.getState();
@@ -109,23 +108,13 @@ public class RuleMetaDataEntity implements SearchTextEntity<RuleMetaData> {
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
-    @Override
     public RuleMetaData toData() {
-        RuleMetaData rule = new RuleMetaData(new RuleId(id));
-        rule.setTenantId(new TenantId(tenantId));
+        RuleMetaData rule = new RuleMetaData(new RuleId(getId()));
+        rule.setTenantId(new TenantId(toUUID(tenantId)));
         rule.setName(name);
         rule.setState(state);
         rule.setWeight(weight);
-        rule.setCreatedTime(UUIDs.unixTimestamp(id));
+        rule.setCreatedTime(UUIDs.unixTimestamp(getId()));
         rule.setPluginToken(pluginToken);
         rule.setFilters(filters);
         rule.setProcessor(processor);

@@ -18,11 +18,9 @@ package org.thingsboard.server.dao.model.sql;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 
-import java.util.UUID;
-
 @AllArgsConstructor
 @Data
 public class TenantDeviceTypeEntity {
-    private UUID tenantId;
+    private String tenantId;
     private String type;
 }

@@ -18,30 +18,31 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.Tenant;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.TENANT_COLUMN_FAMILY_NAME)
-public final class TenantEntity implements SearchTextEntity<Tenant> {
+public final class TenantEntity extends BaseSqlEntity<Tenant> implements SearchTextEntity<Tenant> {
 
     @Transient
     private static final long serialVersionUID = -4330655990232136337L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ModelConstants.TENANT_TITLE_PROPERTY)
     private String title;
 
@@ -75,7 +76,7 @@ public final class TenantEntity implements SearchTextEntity<Tenant> {
     @Column(name = ModelConstants.EMAIL_PROPERTY)
     private String email;
 
-    @Type(type="json")
+    @Type(type = "json")
     @Column(name = ModelConstants.TENANT_ADDITIONAL_INFO_PROPERTY)
     private JsonNode additionalInfo;
 
@@ -85,7 +86,7 @@ public final class TenantEntity implements SearchTextEntity<Tenant> {
 
     public TenantEntity(Tenant tenant) {
         if (tenant.getId() != null) {
-            this.id = tenant.getId().getId();
+            this.setId(tenant.getId().getId());
         }
         this.title = tenant.getTitle();
         this.region = tenant.getRegion();
@@ -116,8 +117,8 @@ public final class TenantEntity implements SearchTextEntity<Tenant> {
 
     @Override
     public Tenant toData() {
-        Tenant tenant = new Tenant(new TenantId(id));
-        tenant.setCreatedTime(UUIDs.unixTimestamp(id));
+        Tenant tenant = new Tenant(new TenantId(getId()));
+        tenant.setCreatedTime(UUIDs.unixTimestamp(getId()));
         tenant.setTitle(title);
         tenant.setRegion(region);
         tenant.setCountry(country);

@@ -22,18 +22,17 @@ import org.thingsboard.server.common.data.EntityType;
 
 import javax.persistence.Transient;
 import java.io.Serializable;
-import java.util.UUID;
 
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
-public class TsKvCompositeKey implements Serializable{
+public class TsKvCompositeKey implements Serializable {
 
     @Transient
     private static final long serialVersionUID = -4089175869616037523L;
 
     private EntityType entityType;
-    private UUID entityId;
+    private String entityId;
     private String key;
     private long ts;
 }
\ No newline at end of file

@@ -21,7 +21,6 @@ import org.thingsboard.server.common.data.kv.*;
 import org.thingsboard.server.dao.model.ToData;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
@@ -69,7 +68,7 @@ public final class TsKvEntity implements ToData<TsKvEntry> {
 
     @Id
     @Column(name = ENTITY_ID_COLUMN)
-    private UUID entityId;
+    private String entityId;
 
     @Id
     @Column(name = KEY_COLUMN)

@@ -15,12 +15,13 @@
  */
 package org.thingsboard.server.dao.model.sql;
 
-import lombok.*;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
 import org.thingsboard.server.common.data.EntityType;
 
 import javax.persistence.Transient;
 import java.io.Serializable;
-import java.util.UUID;
 
 @Data
 @NoArgsConstructor
@@ -31,6 +32,6 @@ public class TsKvLatestCompositeKey implements Serializable{
     private static final long serialVersionUID = -4089175869616037523L;
 
     private EntityType entityType;
-    private UUID entityId;
+    private String entityId;
     private String key;
 }
\ No newline at end of file

@@ -21,7 +21,6 @@ import org.thingsboard.server.common.data.kv.*;
 import org.thingsboard.server.dao.model.ToData;
 
 import javax.persistence.*;
-import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
 
@@ -31,6 +30,8 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @IdClass(TsKvLatestCompositeKey.class)
 public final class TsKvLatestEntity implements ToData<TsKvEntry> {
 
+
+    //TODO: reafctor this and TsKvEntity to avoid code duplicates
     @Id
     @Enumerated(EnumType.STRING)
     @Column(name = ENTITY_TYPE_COLUMN)
@@ -38,7 +39,7 @@ public final class TsKvLatestEntity implements ToData<TsKvEntry> {
 
     @Id
     @Column(name = ENTITY_ID_COLUMN)
-    private UUID entityId;
+    private String entityId;
 
     @Id
     @Column(name = KEY_COLUMN)

@@ -17,29 +17,30 @@ package org.thingsboard.server.dao.model.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
 import lombok.Data;
+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;
 import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @Table(name = ModelConstants.USER_CREDENTIALS_COLUMN_FAMILY_NAME)
-public final class UserCredentialsEntity implements BaseEntity<UserCredentials> {
+public final class UserCredentialsEntity extends BaseSqlEntity<UserCredentials> implements BaseEntity<UserCredentials> {
 
     @Transient
     private static final long serialVersionUID = -3989724854149114846L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ModelConstants.USER_CREDENTIALS_USER_ID_PROPERTY, unique = true)
-    private UUID userId;
+    private String userId;
 
     @Column(name = ModelConstants.USER_CREDENTIALS_ENABLED_PROPERTY)
     private boolean enabled;
@@ -59,10 +60,10 @@ public final class UserCredentialsEntity implements BaseEntity<UserCredentials>
 
     public UserCredentialsEntity(UserCredentials userCredentials) {
         if (userCredentials.getId() != null) {
-            this.id = userCredentials.getId().getId();
+            this.setId(userCredentials.getId().getId());
         }
         if (userCredentials.getUserId() != null) {
-            this.userId = userCredentials.getUserId().getId();
+            this.userId = toString(userCredentials.getUserId().getId());
         }
         this.enabled = userCredentials.isEnabled();
         this.password = userCredentials.getPassword();
@@ -72,10 +73,10 @@ public final class UserCredentialsEntity implements BaseEntity<UserCredentials>
 
     @Override
     public UserCredentials toData() {
-        UserCredentials userCredentials = new UserCredentials(new UserCredentialsId(id));
-        userCredentials.setCreatedTime(UUIDs.unixTimestamp(id));
+        UserCredentials userCredentials = new UserCredentials(new UserCredentialsId(getId()));
+        userCredentials.setCreatedTime(UUIDs.unixTimestamp(getId()));
         if (userId != null) {
-            userCredentials.setUserId(new UserId(userId));
+            userCredentials.setUserId(new UserId(toUUID(userId)));
         }
         userCredentials.setEnabled(enabled);
         userCredentials.setPassword(password);
@@ -84,13 +85,4 @@ public final class UserCredentialsEntity implements BaseEntity<UserCredentials>
         return userCredentials;
     }
 
-    @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
 }
\ No newline at end of file

@@ -18,6 +18,7 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.User;
@@ -25,33 +26,33 @@ import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.security.Authority;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
 import javax.persistence.*;
-import java.util.UUID;
+
+import static org.thingsboard.server.common.data.UUIDConverter.fromString;
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
 
 /**
  * Created by Valerii Sosliuk on 4/21/2017.
  */
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.USER_PG_HIBERNATE_COLUMN_FAMILY_NAME)
-public class UserEntity implements SearchTextEntity<User> {
+public class UserEntity extends BaseSqlEntity<User> implements SearchTextEntity<User> {
     @Transient
     private static final long serialVersionUID = -271106508790582977L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ModelConstants.USER_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.USER_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
+    private String customerId;
 
     @Enumerated(EnumType.STRING)
     @Column(name = ModelConstants.USER_AUTHORITY_PROPERTY)
@@ -69,7 +70,7 @@ public class UserEntity implements SearchTextEntity<User> {
     @Column(name = ModelConstants.USER_LAST_NAME_PROPERTY)
     private String lastName;
 
-    @Type(type="json")
+    @Type(type = "json")
     @Column(name = ModelConstants.USER_ADDITIONAL_INFO_PROPERTY)
     private JsonNode additionalInfo;
 
@@ -78,14 +79,14 @@ public class UserEntity implements SearchTextEntity<User> {
 
     public UserEntity(User user) {
         if (user.getId() != null) {
-            this.id = user.getId().getId();
+            this.setId(user.getId().getId());
         }
         this.authority = user.getAuthority();
         if (user.getTenantId() != null) {
-            this.tenantId = user.getTenantId().getId();
+            this.tenantId = fromTimeUUID(user.getTenantId().getId());
         }
         if (user.getCustomerId() != null) {
-            this.customerId = user.getCustomerId().getId();
+            this.customerId = fromTimeUUID(user.getCustomerId().getId());
         }
         this.email = user.getEmail();
         this.firstName = user.getFirstName();
@@ -104,25 +105,15 @@ public class UserEntity implements SearchTextEntity<User> {
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
-    @Override
     public User toData() {
-        User user = new User(new UserId(id));
-        user.setCreatedTime(UUIDs.unixTimestamp(id));
+        User user = new User(new UserId(getId()));
+        user.setCreatedTime(UUIDs.unixTimestamp(getId()));
         user.setAuthority(authority);
         if (tenantId != null) {
-            user.setTenantId(new TenantId(tenantId));
+            user.setTenantId(new TenantId(fromString(tenantId)));
         }
         if (customerId != null) {
-            user.setCustomerId(new CustomerId(customerId));
+            user.setCustomerId(new CustomerId(fromString(customerId)));
         }
         user.setEmail(email);
         user.setFirstName(firstName);

@@ -18,33 +18,34 @@ package org.thingsboard.server.dao.model.sql;
 import com.datastax.driver.core.utils.UUIDs;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetTypeId;
 import org.thingsboard.server.common.data.widget.WidgetType;
 import org.thingsboard.server.dao.model.BaseEntity;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.util.mapping.JsonStringType;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.WIDGET_TYPE_COLUMN_FAMILY_NAME)
-public final class WidgetTypeEntity implements BaseEntity<WidgetType> {
+public final class WidgetTypeEntity  extends BaseSqlEntity<WidgetType> implements BaseEntity<WidgetType> {
 
     @Transient
     private static final long serialVersionUID = -5436279069884988630L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ModelConstants.WIDGET_TYPE_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.WIDGET_TYPE_BUNDLE_ALIAS_PROPERTY)
     private String bundleAlias;
@@ -65,10 +66,10 @@ public final class WidgetTypeEntity implements BaseEntity<WidgetType> {
 
     public WidgetTypeEntity(WidgetType widgetType) {
         if (widgetType.getId() != null) {
-            this.id = widgetType.getId().getId();
+            this.setId(widgetType.getId().getId());
         }
         if (widgetType.getTenantId() != null) {
-            this.tenantId = widgetType.getTenantId().getId();
+            this.tenantId = toString(widgetType.getTenantId().getId());
         }
         this.bundleAlias = widgetType.getBundleAlias();
         this.alias = widgetType.getAlias();
@@ -77,21 +78,11 @@ public final class WidgetTypeEntity implements BaseEntity<WidgetType> {
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
-    @Override
     public WidgetType toData() {
-        WidgetType widgetType = new WidgetType(new WidgetTypeId(id));
-        widgetType.setCreatedTime(UUIDs.unixTimestamp(id));
+        WidgetType widgetType = new WidgetType(new WidgetTypeId(getId()));
+        widgetType.setCreatedTime(UUIDs.unixTimestamp(getId()));
         if (tenantId != null) {
-            widgetType.setTenantId(new TenantId(tenantId));
+            widgetType.setTenantId(new TenantId(toUUID(tenantId)));
         }
         widgetType.setBundleAlias(bundleAlias);
         widgetType.setAlias(alias);

@@ -18,29 +18,31 @@ package org.thingsboard.server.dao.model.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetsBundleId;
 import org.thingsboard.server.common.data.widget.WidgetsBundle;
+import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.SearchTextEntity;
 
-import javax.persistence.*;
-import java.util.UUID;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.persistence.Transient;
 
 @Data
+@EqualsAndHashCode(callSuper = true)
 @Entity
 @Table(name = ModelConstants.WIDGETS_BUNDLE_COLUMN_FAMILY_NAME)
-public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle> {
+public final class WidgetsBundleEntity extends BaseSqlEntity<WidgetsBundle> implements SearchTextEntity<WidgetsBundle> {
 
     @Transient
     private static final long serialVersionUID = 6897035686422298096L;
 
-    @Id
-    @Column(name = ModelConstants.ID_PROPERTY)
-    private UUID id;
-
     @Column(name = ModelConstants.WIDGETS_BUNDLE_TENANT_ID_PROPERTY)
-    private UUID tenantId;
+    private String tenantId;
 
     @Column(name = ModelConstants.WIDGETS_BUNDLE_ALIAS_PROPERTY)
     private String alias;
@@ -57,26 +59,16 @@ public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle
 
     public WidgetsBundleEntity(WidgetsBundle widgetsBundle) {
         if (widgetsBundle.getId() != null) {
-            this.id = widgetsBundle.getId().getId();
+            this.setId(widgetsBundle.getId().getId());
         }
         if (widgetsBundle.getTenantId() != null) {
-            this.tenantId = widgetsBundle.getTenantId().getId();
+            this.tenantId = UUIDConverter.fromTimeUUID(widgetsBundle.getTenantId().getId());
         }
         this.alias = widgetsBundle.getAlias();
         this.title = widgetsBundle.getTitle();
     }
 
     @Override
-    public UUID getId() {
-        return id;
-    }
-
-    @Override
-    public void setId(UUID id) {
-        this.id = id;
-    }
-
-    @Override
     public String getSearchTextSource() {
         return title;
     }
@@ -88,10 +80,10 @@ public final class WidgetsBundleEntity implements SearchTextEntity<WidgetsBundle
 
     @Override
     public WidgetsBundle toData() {
-        WidgetsBundle widgetsBundle = new WidgetsBundle(new WidgetsBundleId(id));
-        widgetsBundle.setCreatedTime(UUIDs.unixTimestamp(id));
+        WidgetsBundle widgetsBundle = new WidgetsBundle(new WidgetsBundleId(UUIDConverter.fromString(id)));
+        widgetsBundle.setCreatedTime(UUIDs.unixTimestamp(UUIDConverter.fromString(id)));
         if (tenantId != null) {
-            widgetsBundle.setTenantId(new TenantId(tenantId));
+            widgetsBundle.setTenantId(new TenantId(UUIDConverter.fromString(tenantId)));
         }
         widgetsBundle.setAlias(alias);
         widgetsBundle.setTitle(title);

@@ -17,8 +17,6 @@ package org.thingsboard.server.dao.model.type;
 
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
 import org.thingsboard.server.common.data.alarm.AlarmSeverity;
-import org.thingsboard.server.common.data.alarm.AlarmStatus;
-import org.thingsboard.server.dao.alarm.AlarmService;
 
 public class AlarmSeverityCodec extends EnumNameCodec<AlarmSeverity> {
 

@@ -15,9 +15,8 @@
  */
 package org.thingsboard.server.dao.model.type;
 
-import org.thingsboard.server.common.data.security.Authority;
-
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
+import org.thingsboard.server.common.data.security.Authority;
 
 public class AuthorityCodec extends EnumNameCodec<Authority> {
 

@@ -17,7 +17,6 @@ package org.thingsboard.server.dao.model.type;
 
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
-import org.thingsboard.server.common.data.security.Authority;
 
 public class ComponentLifecycleStateCodec extends EnumNameCodec<ComponentLifecycleState> {
 

@@ -17,7 +17,6 @@ package org.thingsboard.server.dao.model.type;
 
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
 import org.thingsboard.server.common.data.plugin.ComponentScope;
-import org.thingsboard.server.common.data.plugin.ComponentType;
 
 public class ComponentScopeCodec extends EnumNameCodec<ComponentScope> {
 

@@ -16,7 +16,6 @@
 package org.thingsboard.server.dao.model.type;
 
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
-import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
 import org.thingsboard.server.common.data.plugin.ComponentType;
 
 public class ComponentTypeCodec extends EnumNameCodec<ComponentType> {

@@ -15,9 +15,8 @@
  */
 package org.thingsboard.server.dao.model.type;
 
-import org.thingsboard.server.common.data.security.DeviceCredentialsType;
-
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
+import org.thingsboard.server.common.data.security.DeviceCredentialsType;
 
 public class DeviceCredentialsTypeCodec extends EnumNameCodec<DeviceCredentialsType> {
 

@@ -17,7 +17,6 @@ package org.thingsboard.server.dao.model.type;
 
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
 import org.thingsboard.server.common.data.EntityType;
-import org.thingsboard.server.common.data.plugin.ComponentType;
 
 public class EntityTypeCodec extends EnumNameCodec<EntityType> {
 

@@ -15,9 +15,8 @@
  */
 package org.thingsboard.server.dao.model.type;
 
-import org.thingsboard.server.common.data.relation.RelationTypeGroup;
-
 import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
+import org.thingsboard.server.common.data.relation.RelationTypeGroup;
 
 public class RelationTypeGroupCodec extends EnumNameCodec<RelationTypeGroup> {
 

@@ -22,11 +22,11 @@ import org.thingsboard.server.common.data.id.PluginId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.plugin.PluginMetaData;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.PluginMetaDataEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.Arrays;
 import java.util.List;

@@ -28,11 +28,11 @@ import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.common.data.relation.EntityRelation;
 import org.thingsboard.server.common.data.relation.RelationTypeGroup;
+import org.thingsboard.server.dao.model.ModelConstants;
+import org.thingsboard.server.dao.model.type.RelationTypeGroupCodec;
 import org.thingsboard.server.dao.nosql.CassandraAbstractAsyncDao;
 import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTimeDao;
 import org.thingsboard.server.dao.util.NoSqlDao;
-import org.thingsboard.server.dao.model.ModelConstants;
-import org.thingsboard.server.dao.model.type.RelationTypeGroupCodec;
 
 import javax.annotation.PostConstruct;
 import java.util.ArrayList;

@@ -22,11 +22,11 @@ import org.thingsboard.server.common.data.id.RuleId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.rule.RuleMetaData;
-import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.model.nosql.RuleMetaDataEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import java.util.Arrays;
 import java.util.List;

@@ -19,10 +19,10 @@ import com.datastax.driver.core.querybuilder.Select.Where;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.AdminSettings;
-import org.thingsboard.server.dao.nosql.CassandraAbstractModelDao;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.dao.model.nosql.AdminSettingsEntity;
+import org.thingsboard.server.dao.nosql.CassandraAbstractModelDao;
+import org.thingsboard.server.dao.util.NoSqlDao;
 
 import static com.datastax.driver.core.querybuilder.QueryBuilder.eq;
 import static com.datastax.driver.core.querybuilder.QueryBuilder.select;

@@ -28,6 +28,8 @@ import org.thingsboard.server.dao.model.BaseEntity;
 import java.util.List;
 import java.util.UUID;
 
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
+
 /**
  * @author Valerii Sosliuk
  */
@@ -38,7 +40,7 @@ public abstract class JpaAbstractDao<E extends BaseEntity<D>, D>
 
     protected abstract Class<E> getEntityClass();
 
-    protected abstract CrudRepository<E, UUID> getCrudRepository();
+    protected abstract CrudRepository<E, String> getCrudRepository();
 
     protected void setSearchText(E entity) {}
 
@@ -64,19 +66,20 @@ public abstract class JpaAbstractDao<E extends BaseEntity<D>, D>
     @Override
     public D findById(UUID key) {
         log.debug("Get entity by key {}", key);
-        E entity = getCrudRepository().findOne(key);
+        E entity = getCrudRepository().findOne(fromTimeUUID(key));
         return DaoUtil.getData(entity);
     }
 
     @Override
     public ListenableFuture<D> findByIdAsync(UUID key) {
         log.debug("Get entity by key async {}", key);
-        return service.submit(() -> DaoUtil.getData(getCrudRepository().findOne(key)));
+        return service.submit(() -> DaoUtil.getData(getCrudRepository().findOne(fromTimeUUID(key))));
     }
 
     @Override
     @Transactional
-    public boolean removeById(UUID key) {
+    public boolean removeById(UUID id) {
+        String key = fromTimeUUID(id);
         getCrudRepository().delete(key);
         log.debug("Remove request: {}", key);
         return getCrudRepository().findOne(key) == null;

@@ -17,9 +17,9 @@ package org.thingsboard.server.dao.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
 import org.springframework.data.jpa.domain.Specification;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.dao.model.BaseEntity;
-import  static org.thingsboard.server.dao.model.ModelConstants.*;
 
 import javax.persistence.criteria.CriteriaBuilder;
 import javax.persistence.criteria.CriteriaQuery;
@@ -41,30 +41,30 @@ public abstract class JpaAbstractSearchTimeDao<E extends BaseEntity<D>, D> exten
                 List<Predicate> predicates = new ArrayList<>();
                 if (pageLink.isAscOrder()) {
                     if (pageLink.getIdOffset() != null) {
-                        Predicate lowerBound = criteriaBuilder.greaterThan(root.get(idColumn), pageLink.getIdOffset());
+                        Predicate lowerBound = criteriaBuilder.greaterThan(root.get(idColumn), UUIDConverter.fromTimeUUID(pageLink.getIdOffset()));
                         predicates.add(lowerBound);
                     } else if (pageLink.getStartTime() != null) {
                         UUID startOf = UUIDs.startOf(pageLink.getStartTime());
-                        Predicate lowerBound = criteriaBuilder.greaterThanOrEqualTo(root.get(idColumn), startOf);
+                        Predicate lowerBound = criteriaBuilder.greaterThanOrEqualTo(root.get(idColumn), UUIDConverter.fromTimeUUID(startOf));
                         predicates.add(lowerBound);
                     }
                     if (pageLink.getEndTime() != null) {
                         UUID endOf = UUIDs.endOf(pageLink.getEndTime());
-                        Predicate upperBound = criteriaBuilder.lessThanOrEqualTo(root.get(idColumn), endOf);
+                        Predicate upperBound = criteriaBuilder.lessThanOrEqualTo(root.get(idColumn), UUIDConverter.fromTimeUUID(endOf));
                         predicates.add(upperBound);
                     }
                 } else {
                     if (pageLink.getIdOffset() != null) {
-                        Predicate lowerBound = criteriaBuilder.lessThan(root.get(idColumn), pageLink.getIdOffset());
+                        Predicate lowerBound = criteriaBuilder.lessThan(root.get(idColumn), UUIDConverter.fromTimeUUID(pageLink.getIdOffset()));
                         predicates.add(lowerBound);
                     } else if (pageLink.getEndTime() != null) {
                         UUID endOf = UUIDs.endOf(pageLink.getEndTime());
-                        Predicate lowerBound = criteriaBuilder.lessThanOrEqualTo(root.get(idColumn), endOf);
+                        Predicate lowerBound = criteriaBuilder.lessThanOrEqualTo(root.get(idColumn), UUIDConverter.fromTimeUUID(endOf));
                         predicates.add(lowerBound);
                     }
                     if (pageLink.getStartTime() != null) {
                         UUID startOf = UUIDs.startOf(pageLink.getStartTime());
-                        Predicate upperBound = criteriaBuilder.greaterThanOrEqualTo(root.get(idColumn), startOf);
+                        Predicate upperBound = criteriaBuilder.greaterThanOrEqualTo(root.get(idColumn), UUIDConverter.fromTimeUUID(startOf));
                         predicates.add(upperBound);
                     }
                 }

@@ -20,22 +20,21 @@ import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.data.repository.query.Param;
 import org.thingsboard.server.common.data.EntityType;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.AlarmEntity;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
-import java.util.UUID;
 
 /**
  * Created by Valerii Sosliuk on 5/21/2017.
  */
 @SqlDao
-public interface AlarmRepository extends CrudRepository<AlarmEntity, UUID> {
+public interface AlarmRepository extends CrudRepository<AlarmEntity, String> {
 
     @Query("SELECT a FROM AlarmEntity a WHERE a.tenantId = :tenantId AND a.originatorId = :originatorId " +
             "AND a.originatorType = :entityType AND a.type = :alarmType ORDER BY a.type ASC, a.id DESC")
-    List<AlarmEntity> findLatestByOriginatorAndType(@Param("tenantId") UUID tenantId,
-                                                    @Param("originatorId") UUID originatorId,
+    List<AlarmEntity> findLatestByOriginatorAndType(@Param("tenantId") String tenantId,
+                                                    @Param("originatorId") String originatorId,
                                                     @Param("entityType") EntityType entityType,
                                                     @Param("alarmType") String alarmType,
                                                     Pageable pageable);

@@ -24,8 +24,8 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
-import org.springframework.transaction.annotation.Transactional;
 import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.alarm.AlarmQuery;
@@ -37,17 +37,15 @@ import org.thingsboard.server.common.data.relation.RelationTypeGroup;
 import org.thingsboard.server.dao.DaoUtil;
 import org.thingsboard.server.dao.alarm.AlarmDao;
 import org.thingsboard.server.dao.alarm.BaseAlarmService;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.AlarmEntity;
 import org.thingsboard.server.dao.relation.RelationDao;
 import org.thingsboard.server.dao.sql.JpaAbstractDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
 
-import static org.springframework.transaction.annotation.Propagation.REQUIRES_NEW;
-
 /**
  * Created by Valerii Sosliuk on 5/19/2017.
  */
@@ -68,7 +66,7 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
     }
 
     @Override
-    protected CrudRepository<AlarmEntity, UUID> getCrudRepository() {
+    protected CrudRepository<AlarmEntity, String> getCrudRepository() {
         return alarmRepository;
     }
 
@@ -76,8 +74,8 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
     public ListenableFuture<Alarm> findLatestByOriginatorAndType(TenantId tenantId, EntityId originator, String type) {
         return service.submit(() -> {
             List<AlarmEntity> latest = alarmRepository.findLatestByOriginatorAndType(
-                    tenantId.getId(),
-                    originator.getId(),
+                    UUIDConverter.fromTimeUUID(tenantId.getId()),
+                    UUIDConverter.fromTimeUUID(originator.getId()),
                     originator.getEntityType(),
                     type,
                     new PageRequest(0, 1));

@@ -24,57 +24,56 @@ import org.thingsboard.server.dao.model.sql.AssetEntity;
 import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
-import java.util.UUID;
 
 /**
  * Created by Valerii Sosliuk on 5/21/2017.
  */
 @SqlDao
-public interface AssetRepository extends CrudRepository<AssetEntity, UUID> {
+public interface AssetRepository extends CrudRepository<AssetEntity, String> {
 
     @Query("SELECT a FROM AssetEntity a WHERE a.tenantId = :tenantId " +
             "AND LOWER(a.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND a.id > :idOffset ORDER BY a.id")
-    List<AssetEntity> findByTenantId(@Param("tenantId") UUID tenantId,
+    List<AssetEntity> findByTenantId(@Param("tenantId") String tenantId,
                                      @Param("textSearch") String textSearch,
-                                     @Param("idOffset") UUID idOffset,
+                                     @Param("idOffset") String idOffset,
                                      Pageable pageable);
 
     @Query("SELECT a FROM AssetEntity a WHERE a.tenantId = :tenantId " +
             "AND a.customerId = :customerId " +
             "AND LOWER(a.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND a.id > :idOffset ORDER BY a.id")
-    List<AssetEntity> findByTenantIdAndCustomerId(@Param("tenantId") UUID tenantId,
-                                                  @Param("customerId") UUID customerId,
+    List<AssetEntity> findByTenantIdAndCustomerId(@Param("tenantId") String tenantId,
+                                                  @Param("customerId") String customerId,
                                                   @Param("textSearch") String textSearch,
-                                                  @Param("idOffset") UUID idOffset,
+                                                  @Param("idOffset") String idOffset,
                                                   Pageable pageable);
 
-    List<AssetEntity> findByTenantIdAndIdIn(UUID tenantId, List<UUID> assetIds);
+    List<AssetEntity> findByTenantIdAndIdIn(String tenantId, List<String> assetIds);
 
-    List<AssetEntity> findByTenantIdAndCustomerIdAndIdIn(UUID tenantId, UUID customerId, List<UUID> assetIds);
+    List<AssetEntity> findByTenantIdAndCustomerIdAndIdIn(String tenantId, String customerId, List<String> assetIds);
 
-    AssetEntity findByTenantIdAndName(UUID tenantId, String name);
+    AssetEntity findByTenantIdAndName(String tenantId, String name);
 
     @Query("SELECT a FROM AssetEntity a WHERE a.tenantId = :tenantId " +
             "AND a.type = :type " +
             "AND LOWER(a.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND a.id > :idOffset ORDER BY a.id")
-    List<AssetEntity> findByTenantIdAndType(@Param("tenantId") UUID tenantId,
+    List<AssetEntity> findByTenantIdAndType(@Param("tenantId") String tenantId,
                                             @Param("type") String type,
                                             @Param("textSearch") String textSearch,
-                                            @Param("idOffset") UUID idOffset,
+                                            @Param("idOffset") String idOffset,
                                             Pageable pageable);
 
     @Query("SELECT a FROM AssetEntity a WHERE a.tenantId = :tenantId " +
             "AND a.customerId = :customerId AND a.type = :type " +
             "AND LOWER(a.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND a.id > :idOffset ORDER BY a.id")
-    List<AssetEntity> findByTenantIdAndCustomerIdAndType(@Param("tenantId") UUID tenantId,
-                                                         @Param("customerId") UUID customerId,
+    List<AssetEntity> findByTenantIdAndCustomerIdAndType(@Param("tenantId") String tenantId,
+                                                         @Param("customerId") String customerId,
                                                          @Param("type") String type,
                                                          @Param("textSearch") String textSearch,
-                                                         @Param("idOffset") UUID idOffset,
+                                                         @Param("idOffset") String idOffset,
                                                          Pageable pageable);
 
     @Query("SELECT NEW org.thingsboard.server.common.data.asset.TenantAssetType(a.type, a.tenantId) FROM AssetEntity a GROUP BY a.tenantId, a.type")

@@ -24,17 +24,19 @@ import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.asset.TenantAssetType;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.asset.AssetDao;
 import org.thingsboard.server.dao.model.sql.AssetEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.UUID;
 
-import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUIDs;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;
 
 /**
  * Created by Valerii Sosliuk on 5/19/2017.
@@ -52,7 +54,7 @@ public class JpaAssetDao extends JpaAbstractSearchTextDao<AssetEntity, Asset> im
     }
 
     @Override
-    protected CrudRepository<AssetEntity, UUID> getCrudRepository() {
+    protected CrudRepository<AssetEntity, String> getCrudRepository() {
         return assetRepository;
     }
 
@@ -60,38 +62,38 @@ public class JpaAssetDao extends JpaAbstractSearchTextDao<AssetEntity, Asset> im
     public List<Asset> findAssetsByTenantId(UUID tenantId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(assetRepository
                 .findByTenantId(
-                        tenantId,
+                        fromTimeUUID(tenantId),
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
     @Override
     public ListenableFuture<List<Asset>> findAssetsByTenantIdAndIdsAsync(UUID tenantId, List<UUID> assetIds) {
         return service.submit(() ->
-                DaoUtil.convertDataList(assetRepository.findByTenantIdAndIdIn(tenantId, assetIds)));
+                DaoUtil.convertDataList(assetRepository.findByTenantIdAndIdIn(fromTimeUUID(tenantId), fromTimeUUIDs(assetIds))));
     }
 
     @Override
     public List<Asset> findAssetsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(assetRepository
                 .findByTenantIdAndCustomerId(
-                        tenantId,
-                        customerId,
+                        fromTimeUUID(tenantId),
+                        fromTimeUUID(customerId),
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
     @Override
     public ListenableFuture<List<Asset>> findAssetsByTenantIdAndCustomerIdAndIdsAsync(UUID tenantId, UUID customerId, List<UUID> assetIds) {
         return service.submit(() ->
-                DaoUtil.convertDataList(assetRepository.findByTenantIdAndCustomerIdAndIdIn(tenantId, customerId, assetIds)));
+                DaoUtil.convertDataList(assetRepository.findByTenantIdAndCustomerIdAndIdIn(fromTimeUUID(tenantId), fromTimeUUID(customerId), fromTimeUUIDs(assetIds))));
     }
 
     @Override
     public Optional<Asset> findAssetsByTenantIdAndName(UUID tenantId, String name) {
-        Asset asset = DaoUtil.getData(assetRepository.findByTenantIdAndName(tenantId, name));
+        Asset asset = DaoUtil.getData(assetRepository.findByTenantIdAndName(fromTimeUUID(tenantId), name));
         return Optional.ofNullable(asset);
     }
 
@@ -99,10 +101,10 @@ public class JpaAssetDao extends JpaAbstractSearchTextDao<AssetEntity, Asset> im
     public List<Asset> findAssetsByTenantIdAndType(UUID tenantId, String type, TextPageLink pageLink) {
         return DaoUtil.convertDataList(assetRepository
                 .findByTenantIdAndType(
-                        tenantId,
+                        fromTimeUUID(tenantId),
                         type,
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
@@ -110,11 +112,11 @@ public class JpaAssetDao extends JpaAbstractSearchTextDao<AssetEntity, Asset> im
     public List<Asset> findAssetsByTenantIdAndCustomerIdAndType(UUID tenantId, UUID customerId, String type, TextPageLink pageLink) {
         return DaoUtil.convertDataList(assetRepository
                 .findByTenantIdAndCustomerIdAndType(
-                        tenantId,
-                        customerId,
+                        fromTimeUUID(tenantId),
+                        fromTimeUUID(customerId),
                         type,
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 

@@ -17,18 +17,17 @@ package org.thingsboard.server.dao.sql.attributes;
 
 import org.springframework.data.repository.CrudRepository;
 import org.thingsboard.server.common.data.EntityType;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.AttributeKvCompositeKey;
 import org.thingsboard.server.dao.model.sql.AttributeKvEntity;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
-import java.util.UUID;
 
 @SqlDao
 public interface AttributeKvRepository extends CrudRepository<AttributeKvEntity, AttributeKvCompositeKey> {
 
     List<AttributeKvEntity> findAllByEntityTypeAndEntityIdAndAttributeType(EntityType entityType,
-                                                                           UUID entityId,
+                                                                           String entityId,
                                                                            String attributeType);
 }
 

@@ -20,20 +20,23 @@ import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.kv.AttributeKvEntry;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.attributes.AttributesDao;
 import org.thingsboard.server.dao.model.sql.AttributeKvCompositeKey;
 import org.thingsboard.server.dao.model.sql.AttributeKvEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractDaoListeningExecutorService;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.Collection;
 import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
+
 @Component
 @Slf4j
 @SqlDao
@@ -45,11 +48,7 @@ public class JpaAttributeDao extends JpaAbstractDaoListeningExecutorService impl
     @Override
     public ListenableFuture<Optional<AttributeKvEntry>> find(EntityId entityId, String attributeType, String attributeKey) {
         AttributeKvCompositeKey compositeKey =
-                new AttributeKvCompositeKey(
-                        entityId.getEntityType(),
-                        entityId.getId(),
-                        attributeType,
-                        attributeKey);
+                getAttributeKvCompositeKey(entityId, attributeType, attributeKey);
         return service.submit(() ->
                 Optional.of(DaoUtil.getData(attributeKvRepository.findOne(compositeKey))));
     }
@@ -60,11 +59,7 @@ public class JpaAttributeDao extends JpaAbstractDaoListeningExecutorService impl
                 attributeKeys
                         .stream()
                         .map(attributeKey ->
-                                new AttributeKvCompositeKey(
-                                        entityId.getEntityType(),
-                                        entityId.getId(),
-                                        attributeType,
-                                        attributeKey))
+                                getAttributeKvCompositeKey(entityId, attributeType, attributeKey))
                         .collect(Collectors.toList());
         return service.submit(() ->
                 DaoUtil.convertDataList(Lists.newArrayList(attributeKvRepository.findAll(compositeKeys))));
@@ -76,7 +71,7 @@ public class JpaAttributeDao extends JpaAbstractDaoListeningExecutorService impl
                 DaoUtil.convertDataList(Lists.newArrayList(
                         attributeKvRepository.findAllByEntityTypeAndEntityIdAndAttributeType(
                                 entityId.getEntityType(),
-                                entityId.getId(),
+                                UUIDConverter.fromTimeUUID(entityId.getId()),
                                 attributeType))));
     }
 
@@ -84,7 +79,7 @@ public class JpaAttributeDao extends JpaAbstractDaoListeningExecutorService impl
     public ListenableFuture<Void> save(EntityId entityId, String attributeType, AttributeKvEntry attribute) {
         AttributeKvEntity entity = new AttributeKvEntity();
         entity.setEntityType(entityId.getEntityType());
-        entity.setEntityId(entityId.getId());
+        entity.setEntityId(fromTimeUUID(entityId.getId()));
         entity.setAttributeType(attributeType);
         entity.setAttributeKey(attribute.getKey());
         entity.setLastUpdateTs(attribute.getLastUpdateTs());
@@ -105,7 +100,7 @@ public class JpaAttributeDao extends JpaAbstractDaoListeningExecutorService impl
                 .map(key -> {
                     AttributeKvEntity entityToDelete = new AttributeKvEntity();
                     entityToDelete.setEntityType(entityId.getEntityType());
-                    entityToDelete.setEntityId(entityId.getId());
+                    entityToDelete.setEntityId(fromTimeUUID(entityId.getId()));
                     entityToDelete.setAttributeType(attributeType);
                     entityToDelete.setAttributeKey(key);
                     return entityToDelete;
@@ -116,4 +111,12 @@ public class JpaAttributeDao extends JpaAbstractDaoListeningExecutorService impl
             return null;
         });
     }
+
+    private AttributeKvCompositeKey getAttributeKvCompositeKey(EntityId entityId, String attributeType, String attributeKey) {
+        return new AttributeKvCompositeKey(
+                entityId.getEntityType(),
+                fromTimeUUID(entityId.getId()),
+                attributeType,
+                attributeKey);
+    }
 }

@@ -21,8 +21,8 @@ import org.springframework.data.repository.CrudRepository;
 import org.springframework.data.repository.query.Param;
 import org.thingsboard.server.common.data.plugin.ComponentScope;
 import org.thingsboard.server.common.data.plugin.ComponentType;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.ComponentDescriptorEntity;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
 import java.util.UUID;
@@ -31,7 +31,7 @@ import java.util.UUID;
  * Created by Valerii Sosliuk on 5/6/2017.
  */
 @SqlDao
-public interface ComponentDescriptorRepository extends CrudRepository<ComponentDescriptorEntity, UUID> {
+public interface ComponentDescriptorRepository extends CrudRepository<ComponentDescriptorEntity, String> {
 
     ComponentDescriptorEntity findByClazz(String clazz);
 
@@ -40,7 +40,7 @@ public interface ComponentDescriptorRepository extends CrudRepository<ComponentD
             "AND cd.id > :idOffset ORDER BY cd.id")
     List<ComponentDescriptorEntity> findByType(@Param("type") ComponentType type,
                                                @Param("textSearch") String textSearch,
-                                               @Param("idOffset") UUID idOffset,
+                                               @Param("idOffset") String idOffset,
                                                Pageable pageable);
 
     @Query("SELECT cd FROM ComponentDescriptorEntity cd WHERE cd.type = :type " +
@@ -49,7 +49,7 @@ public interface ComponentDescriptorRepository extends CrudRepository<ComponentD
     List<ComponentDescriptorEntity> findByScopeAndType(@Param("type") ComponentType type,
                                                        @Param("scope") ComponentScope scope,
                                                        @Param("textSearch") String textSearch,
-                                                       @Param("idOffset") UUID idOffset,
+                                                       @Param("idOffset") String idOffset,
                                                        Pageable pageable);
 
     void deleteByClazz(String clazz);

@@ -20,23 +20,23 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.ComponentDescriptorId;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.plugin.ComponentDescriptor;
 import org.thingsboard.server.common.data.plugin.ComponentScope;
 import org.thingsboard.server.common.data.plugin.ComponentType;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.component.ComponentDescriptorDao;
 import org.thingsboard.server.dao.model.sql.ComponentDescriptorEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
-import java.util.UUID;
 
-import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
@@ -55,7 +55,7 @@ public class JpaBaseComponentDescriptorDao extends JpaAbstractSearchTextDao<Comp
     }
 
     @Override
-    protected CrudRepository<ComponentDescriptorEntity, UUID> getCrudRepository() {
+    protected CrudRepository<ComponentDescriptorEntity, String> getCrudRepository() {
         return componentDescriptorRepository;
     }
 
@@ -64,8 +64,7 @@ public class JpaBaseComponentDescriptorDao extends JpaAbstractSearchTextDao<Comp
         if (component.getId() == null) {
             component.setId(new ComponentDescriptorId(UUIDs.timeBased()));
         }
-        boolean exists = componentDescriptorRepository.findOne(component.getId().getId()) != null;
-        if (!exists) {
+        if (componentDescriptorRepository.findOne(UUIDConverter.fromTimeUUID(component.getId().getId())) == null) {
             return Optional.of(save(component));
         }
         return Optional.empty();
@@ -87,7 +86,7 @@ public class JpaBaseComponentDescriptorDao extends JpaAbstractSearchTextDao<Comp
                 .findByType(
                         type,
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : UUIDConverter.fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
@@ -98,7 +97,7 @@ public class JpaBaseComponentDescriptorDao extends JpaAbstractSearchTextDao<Comp
                         type,
                         scope,
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : UUIDConverter.fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 

@@ -19,26 +19,25 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.data.repository.query.Param;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.CustomerEntity;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
-import java.util.UUID;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
 @SqlDao
-public interface CustomerRepository extends CrudRepository<CustomerEntity, UUID> {
+public interface CustomerRepository extends CrudRepository<CustomerEntity, String> {
 
     @Query("SELECT c FROM CustomerEntity c WHERE c.tenantId = :tenantId " +
             "AND LOWER(c.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND c.id > :idOffset ORDER BY c.id")
-    List<CustomerEntity> findByTenantId(@Param("tenantId") UUID tenantId,
+    List<CustomerEntity> findByTenantId(@Param("tenantId") String tenantId,
                                         @Param("textSearch") String textSearch,
-                                        @Param("idOffset") UUID idOffset,
+                                        @Param("idOffset") String idOffset,
                                         Pageable pageable);
 
-    CustomerEntity findByTenantIdAndTitle(UUID tenantId, String title);
+    CustomerEntity findByTenantIdAndTitle(String tenantId, String title);
 
 }

@@ -20,19 +20,20 @@ import org.springframework.data.domain.PageRequest;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.customer.CustomerDao;
 import org.thingsboard.server.dao.model.sql.CustomerEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.UUID;
 
-import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
@@ -50,22 +51,22 @@ public class JpaCustomerDao extends JpaAbstractSearchTextDao<CustomerEntity, Cus
     }
 
     @Override
-    protected CrudRepository<CustomerEntity, UUID> getCrudRepository() {
+    protected CrudRepository<CustomerEntity, String> getCrudRepository() {
         return customerRepository;
     }
 
     @Override
     public List<Customer> findCustomersByTenantId(UUID tenantId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(customerRepository.findByTenantId(
-                tenantId,
+                UUIDConverter.fromTimeUUID(tenantId),
                 Objects.toString(pageLink.getTextSearch(), ""),
-                pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                pageLink.getIdOffset() == null ? NULL_UUID_STR : UUIDConverter.fromTimeUUID(pageLink.getIdOffset()),
                 new PageRequest(0, pageLink.getLimit())));
     }
 
     @Override
     public Optional<Customer> findCustomersByTenantIdAndTitle(UUID tenantId, String title) {
-        Customer customer = DaoUtil.getData(customerRepository.findByTenantIdAndTitle(tenantId, title));
+        Customer customer = DaoUtil.getData(customerRepository.findByTenantIdAndTitle(UUIDConverter.fromTimeUUID(tenantId), title));
         return Optional.ofNullable(customer);
     }
 }

@@ -19,8 +19,8 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.data.repository.query.Param;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.DashboardInfoEntity;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
 import java.util.UUID;
@@ -29,22 +29,22 @@ import java.util.UUID;
  * Created by Valerii Sosliuk on 5/6/2017.
  */
 @SqlDao
-public interface DashboardInfoRepository extends CrudRepository<DashboardInfoEntity, UUID> {
+public interface DashboardInfoRepository extends CrudRepository<DashboardInfoEntity, String> {
 
     @Query("SELECT di FROM DashboardInfoEntity di WHERE di.tenantId = :tenantId " +
             "AND LOWER(di.searchText) LIKE LOWER(CONCAT(:searchText, '%')) " +
             "AND di.id > :idOffset ORDER BY di.id")
-    List<DashboardInfoEntity> findByTenantId(@Param("tenantId") UUID tenantId,
+    List<DashboardInfoEntity> findByTenantId(@Param("tenantId") String tenantId,
                                              @Param("searchText") String searchText,
-                                             @Param("idOffset") UUID idOffset,
+                                             @Param("idOffset") String idOffset,
                                              Pageable pageable);
 
     @Query("SELECT di FROM DashboardInfoEntity di WHERE di.tenantId = :tenantId " +
             "AND di.customerId = :customerId AND LOWER(di.searchText) LIKE LOWER(CONCAT(:searchText, '%')) " +
             "AND di.id > :idOffset ORDER BY di.id")
-    List<DashboardInfoEntity> findByTenantIdAndCustomerId(@Param("tenantId") UUID tenantId,
-                                                          @Param("customerId") UUID customerId,
+    List<DashboardInfoEntity> findByTenantIdAndCustomerId(@Param("tenantId") String tenantId,
+                                                          @Param("customerId") String customerId,
                                                           @Param("searchText") String searchText,
-                                                          @Param("idOffset") UUID idOffset,
+                                                          @Param("idOffset") String idOffset,
                                                           Pageable pageable);
 }

@@ -16,14 +16,12 @@
 package org.thingsboard.server.dao.sql.dashboard;
 
 import org.springframework.data.repository.CrudRepository;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.DashboardEntity;
-
-import java.util.UUID;
+import org.thingsboard.server.dao.util.SqlDao;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
 @SqlDao
-public interface DashboardRepository extends CrudRepository<DashboardEntity, UUID> {
+public interface DashboardRepository extends CrudRepository<DashboardEntity, String> {
 }

@@ -19,12 +19,10 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Dashboard;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.dashboard.DashboardDao;
 import org.thingsboard.server.dao.model.sql.DashboardEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
-
-import java.util.UUID;
+import org.thingsboard.server.dao.util.SqlDao;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
@@ -42,7 +40,7 @@ public class JpaDashboardDao extends JpaAbstractSearchTextDao<DashboardEntity, D
     }
 
     @Override
-    protected CrudRepository<DashboardEntity, UUID> getCrudRepository() {
+    protected CrudRepository<DashboardEntity, String> getCrudRepository() {
         return dashboardRepository;
     }
 }

@@ -20,18 +20,19 @@ import org.springframework.data.domain.PageRequest;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.DashboardInfo;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.dashboard.DashboardInfoDao;
 import org.thingsboard.server.dao.model.sql.DashboardInfoEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
 import java.util.Objects;
 import java.util.UUID;
 
-import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
@@ -57,9 +58,9 @@ public class JpaDashboardInfoDao extends JpaAbstractSearchTextDao<DashboardInfoE
     public List<DashboardInfo> findDashboardsByTenantId(UUID tenantId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(dashboardInfoRepository
                 .findByTenantId(
-                        tenantId,
+                        UUIDConverter.fromTimeUUID(tenantId),
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : UUIDConverter.fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
@@ -67,10 +68,10 @@ public class JpaDashboardInfoDao extends JpaAbstractSearchTextDao<DashboardInfoE
     public List<DashboardInfo> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(dashboardInfoRepository
                 .findByTenantIdAndCustomerId(
-                        tenantId,
-                        customerId,
+                        UUIDConverter.fromTimeUUID(tenantId),
+                        UUIDConverter.fromTimeUUID(customerId),
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : UUIDConverter.fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 }

@@ -16,18 +16,16 @@
 package org.thingsboard.server.dao.sql.device;
 
 import org.springframework.data.repository.CrudRepository;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.DeviceCredentialsEntity;
-
-import java.util.UUID;
+import org.thingsboard.server.dao.util.SqlDao;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
 @SqlDao
-public interface DeviceCredentialsRepository extends CrudRepository<DeviceCredentialsEntity, UUID> {
+public interface DeviceCredentialsRepository extends CrudRepository<DeviceCredentialsEntity, String> {
 
-    DeviceCredentialsEntity findByDeviceId(UUID deviceId);
+    DeviceCredentialsEntity findByDeviceId(String deviceId);
 
     DeviceCredentialsEntity findByCredentialsId(String credentialsId);
 }

@@ -19,46 +19,45 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.data.repository.query.Param;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.model.sql.DeviceEntity;
 import org.thingsboard.server.dao.model.sql.TenantDeviceTypeEntity;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.List;
-import java.util.UUID;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
 @SqlDao
-public interface DeviceRepository extends CrudRepository<DeviceEntity, UUID> {
+public interface DeviceRepository extends CrudRepository<DeviceEntity, String> {
 
 
     @Query("SELECT d FROM DeviceEntity d WHERE d.tenantId = :tenantId " +
             "AND d.customerId = :customerId " +
             "AND LOWER(d.searchText) LIKE LOWER(CONCAT(:searchText, '%')) " +
             "AND d.id > :idOffset ORDER BY d.id")
-    List<DeviceEntity> findByTenantIdAndCustomerId(@Param("tenantId") UUID tenantId,
-                                                   @Param("customerId") UUID customerId,
+    List<DeviceEntity> findByTenantIdAndCustomerId(@Param("tenantId") String tenantId,
+                                                   @Param("customerId") String customerId,
                                                    @Param("searchText") String searchText,
-                                                   @Param("idOffset") UUID idOffset,
+                                                   @Param("idOffset") String idOffset,
                                                    Pageable pageable);
 
     @Query("SELECT d FROM DeviceEntity d WHERE d.tenantId = :tenantId " +
             "AND LOWER(d.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND d.id > :idOffset ORDER BY d.id")
-    List<DeviceEntity> findByTenantId(@Param("tenantId") UUID tenantId,
+    List<DeviceEntity> findByTenantId(@Param("tenantId") String tenantId,
                                       @Param("textSearch") String textSearch,
-                                      @Param("idOffset") UUID idOffset,
+                                      @Param("idOffset") String idOffset,
                                       Pageable pageable);
 
     @Query("SELECT d FROM DeviceEntity d WHERE d.tenantId = :tenantId " +
             "AND d.type = :type " +
             "AND LOWER(d.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND d.id > :idOffset ORDER BY d.id")
-    List<DeviceEntity> findByTenantIdAndType(@Param("tenantId") UUID tenantId,
+    List<DeviceEntity> findByTenantIdAndType(@Param("tenantId") String tenantId,
                                              @Param("type") String type,
                                              @Param("textSearch") String textSearch,
-                                             @Param("idOffset") UUID idOffset,
+                                             @Param("idOffset") String idOffset,
                                              Pageable pageable);
 
     @Query("SELECT d FROM DeviceEntity d WHERE d.tenantId = :tenantId " +
@@ -66,19 +65,19 @@ public interface DeviceRepository extends CrudRepository<DeviceEntity, UUID> {
             "AND d.type = :type " +
             "AND LOWER(d.searchText) LIKE LOWER(CONCAT(:textSearch, '%')) " +
             "AND d.id > :idOffset ORDER BY d.id")
-    List<DeviceEntity> findByTenantIdAndCustomerIdAndType(@Param("tenantId") UUID tenantId,
-                                                          @Param("customerId") UUID customerId,
+    List<DeviceEntity> findByTenantIdAndCustomerIdAndType(@Param("tenantId") String tenantId,
+                                                          @Param("customerId") String customerId,
                                                           @Param("type") String type,
                                                           @Param("textSearch") String textSearch,
-                                                          @Param("idOffset") UUID idOffset,
+                                                          @Param("idOffset") String idOffset,
                                                           Pageable pageable);
 
     @Query("SELECT DISTINCT NEW org.thingsboard.server.dao.model.sql.TenantDeviceTypeEntity(d.tenantId, d.type) FROM DeviceEntity d")
     List<TenantDeviceTypeEntity> findTenantDeviceTypes();
 
-    DeviceEntity findByTenantIdAndName(UUID tenantId, String name);
+    DeviceEntity findByTenantIdAndName(String tenantId, String name);
 
-    List<DeviceEntity> findDevicesByTenantIdAndCustomerIdAndIdIn(UUID tenantId, UUID customerId, List<UUID> deviceIds);
+    List<DeviceEntity> findDevicesByTenantIdAndCustomerIdAndIdIn(String tenantId, String customerId, List<String> deviceIds);
 
-    List<DeviceEntity> findDevicesByTenantIdAndIdIn(UUID tenantId, List<UUID> deviceIds);
+    List<DeviceEntity> findDevicesByTenantIdAndIdIn(String tenantId, List<String> deviceIds);
 }

@@ -18,12 +18,13 @@ package org.thingsboard.server.dao.sql.device;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.device.DeviceCredentialsDao;
 import org.thingsboard.server.dao.model.sql.DeviceCredentialsEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.UUID;
 
@@ -43,13 +44,13 @@ public class JpaDeviceCredentialsDao extends JpaAbstractDao<DeviceCredentialsEnt
     }
 
     @Override
-    protected CrudRepository<DeviceCredentialsEntity, UUID> getCrudRepository() {
+    protected CrudRepository<DeviceCredentialsEntity, String> getCrudRepository() {
         return deviceCredentialsRepository;
     }
 
     @Override
     public DeviceCredentials findByDeviceId(UUID deviceId) {
-        return DaoUtil.getData(deviceCredentialsRepository.findByDeviceId(deviceId));
+        return DaoUtil.getData(deviceCredentialsRepository.findByDeviceId(UUIDConverter.fromTimeUUID(deviceId)));
     }
 
     @Override

@@ -22,18 +22,21 @@ import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.TenantDeviceType;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.device.DeviceDao;
 import org.thingsboard.server.dao.model.sql.DeviceEntity;
 import org.thingsboard.server.dao.model.sql.TenantDeviceTypeEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import java.util.*;
 
-import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
+import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUIDs;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;
 
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
@@ -51,7 +54,7 @@ public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device>
     }
 
     @Override
-    protected CrudRepository<DeviceEntity, UUID> getCrudRepository() {
+    protected CrudRepository<DeviceEntity, String> getCrudRepository() {
         return deviceRepository;
     }
 
@@ -59,37 +62,37 @@ public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device>
     public List<Device> findDevicesByTenantId(UUID tenantId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(
                 deviceRepository.findByTenantId(
-                        tenantId,
+                        fromTimeUUID(tenantId),
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
     @Override
     public ListenableFuture<List<Device>> findDevicesByTenantIdAndIdsAsync(UUID tenantId, List<UUID> deviceIds) {
-        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findDevicesByTenantIdAndIdIn(tenantId, deviceIds)));
+        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findDevicesByTenantIdAndIdIn(UUIDConverter.fromTimeUUID(tenantId), fromTimeUUIDs(deviceIds))));
     }
 
     @Override
     public List<Device> findDevicesByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
         return DaoUtil.convertDataList(
                 deviceRepository.findByTenantIdAndCustomerId(
-                        tenantId,
-                        customerId,
+                        fromTimeUUID(tenantId),
+                        fromTimeUUID(customerId),
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
     @Override
     public ListenableFuture<List<Device>> findDevicesByTenantIdCustomerIdAndIdsAsync(UUID tenantId, UUID customerId, List<UUID> deviceIds) {
         return service.submit(() -> DaoUtil.convertDataList(
-                deviceRepository.findDevicesByTenantIdAndCustomerIdAndIdIn(tenantId, customerId, deviceIds)));
+                deviceRepository.findDevicesByTenantIdAndCustomerIdAndIdIn(fromTimeUUID(tenantId), fromTimeUUID(customerId), fromTimeUUIDs(deviceIds))));
     }
 
     @Override
     public Optional<Device> findDeviceByTenantIdAndName(UUID tenantId, String name) {
-        Device device = DaoUtil.getData(deviceRepository.findByTenantIdAndName(tenantId, name));
+        Device device = DaoUtil.getData(deviceRepository.findByTenantIdAndName(fromTimeUUID(tenantId), name));
         return Optional.ofNullable(device);
     }
 
@@ -97,10 +100,10 @@ public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device>
     public List<Device> findDevicesByTenantIdAndType(UUID tenantId, String type, TextPageLink pageLink) {
         return DaoUtil.convertDataList(
                 deviceRepository.findByTenantIdAndType(
-                        tenantId,
+                        fromTimeUUID(tenantId),
                         type,
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
@@ -108,11 +111,11 @@ public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device>
     public List<Device> findDevicesByTenantIdAndCustomerIdAndType(UUID tenantId, UUID customerId, String type, TextPageLink pageLink) {
         return DaoUtil.convertDataList(
                 deviceRepository.findByTenantIdAndCustomerIdAndType(
-                        tenantId,
-                        customerId,
+                        fromTimeUUID(tenantId),
+                        fromTimeUUID(customerId),
                         type,
                         Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID : pageLink.getIdOffset(),
+                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                         new PageRequest(0, pageLink.getLimit())));
     }
 
@@ -126,7 +129,7 @@ public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device>
         if (entities != null && !entities.isEmpty()) {
             list = new ArrayList<>();
             for (TenantDeviceTypeEntity entity : entities) {
-                list.add(new TenantDeviceType(entity.getType(), new TenantId(entity.getTenantId())));
+                list.add(new TenantDeviceType(entity.getType(), new TenantId(UUIDConverter.fromString(entity.getTenantId()))));
             }
         }
         return list;

@@ -21,21 +21,19 @@ import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.dao.model.sql.EventEntity;
 import org.thingsboard.server.dao.util.SqlDao;
 
-import java.util.UUID;
-
 /**
  * Created by Valerii Sosliuk on 5/3/2017.
  */
 @SqlDao
-public interface EventRepository extends CrudRepository<EventEntity, UUID>, JpaSpecificationExecutor<EventEntity> {
+public interface EventRepository extends CrudRepository<EventEntity, String>, JpaSpecificationExecutor<EventEntity> {
 
-    EventEntity findByTenantIdAndEntityTypeAndEntityIdAndEventTypeAndEventUid(UUID tenantId,
+    EventEntity findByTenantIdAndEntityTypeAndEntityIdAndEventTypeAndEventUid(String tenantId,
                                                                               EntityType entityType,
-                                                                              UUID entityId,
+                                                                              String entityId,
                                                                               String eventType,
                                                                               String eventUid);
 
-    EventEntity findByTenantIdAndEntityTypeAndEntityId(UUID tenantId,
+    EventEntity findByTenantIdAndEntityTypeAndEntityId(String tenantId,
                                                        EntityType entityType,
-                                                       UUID entityId);
+                                                       String entityId);
 }

@@ -26,14 +26,15 @@ import org.springframework.data.jpa.domain.Specification;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Event;
+import org.thingsboard.server.common.data.UUIDConverter;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.EventId;
 import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.dao.DaoUtil;
-import org.thingsboard.server.dao.util.SqlDao;
 import org.thingsboard.server.dao.event.EventDao;
 import org.thingsboard.server.dao.model.sql.EventEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTimeDao;
+import org.thingsboard.server.dao.util.SqlDao;
 
 import javax.persistence.criteria.CriteriaBuilder;
 import javax.persistence.criteria.CriteriaQuery;
@@ -67,7 +68,7 @@ public class JpaBaseEventDao extends JpaAbstractSearchTimeDao<EventEntity, Event
     }
 
     @Override
-    protected CrudRepository<EventEntity, UUID> getCrudRepository() {
+    protected CrudRepository<EventEntity, String> getCrudRepository() {
         return eventRepository;
     }
 
@@ -91,7 +92,7 @@ public class JpaBaseEventDao extends JpaAbstractSearchTimeDao<EventEntity, Event
     @Override
     public Event findEvent(UUID tenantId, EntityId entityId, String eventType, String eventUid) {
         return DaoUtil.getData(eventRepository.findByTenantIdAndEntityTypeAndEntityIdAndEventTypeAndEventUid(
-                tenantId, entityId.getEntityType(), entityId.getId(), eventType, eventUid));
+                UUIDConverter.fromTimeUUID(tenantId), entityId.getEntityType(),  UUIDConverter.fromTimeUUID(entityId.getId()), eventType, eventUid));
     }
 
     @Override
@@ -112,7 +113,7 @@ public class JpaBaseEventDao extends JpaAbstractSearchTimeDao<EventEntity, Event
         log.debug("Save event [{}] ", entity);
         if (entity.getTenantId() == null) {
             log.trace("Save system event with predefined id {}", systemTenantId);
-            entity.setTenantId(systemTenantId);
+            entity.setTenantId(UUIDConverter.fromTimeUUID(systemTenantId));
         }
         if (entity.getId() == null) {
             entity.setId(UUIDs.timeBased());
@@ -133,13 +134,13 @@ public class JpaBaseEventDao extends JpaAbstractSearchTimeDao<EventEntity, Event
             public Predicate toPredicate(Root<EventEntity> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) {
                 List<Predicate> predicates = new ArrayList<Predicate>();
                 if (tenantId != null) {
-                    Predicate tenantIdPredicate = criteriaBuilder.equal(root.get("tenantId"), tenantId);
+                    Predicate tenantIdPredicate = criteriaBuilder.equal(root.get("tenantId"), UUIDConverter.fromTimeUUID(tenantId));
                     predicates.add(tenantIdPredicate);
                 }
                 if (entityId != null) {
                     Predicate entityTypePredicate = criteriaBuilder.equal(root.get("entityType"), entityId.getEntityType());
                     predicates.add(entityTypePredicate);
-                    Predicate entityIdPredicate = criteriaBuilder.equal(root.get("entityId"), entityId.getId());
+                    Predicate entityIdPredicate = criteriaBuilder.equal(root.get("entityId"), UUIDConverter.fromTimeUUID(entityId.getId()));
                     predicates.add(entityIdPredicate);
                 }
                 if (eventType != null) {