thingsboard-aplcache

Changes

Details

diff --git a/application/src/main/data/upgrade/1.4.0/schema_update.cql b/application/src/main/data/upgrade/1.4.0/schema_update.cql
index c5b656f..7a63bb3 100644
--- a/application/src/main/data/upgrade/1.4.0/schema_update.cql
+++ b/application/src/main/data/upgrade/1.4.0/schema_update.cql
@@ -87,3 +87,26 @@ CREATE TABLE IF NOT EXISTS thingsboard.audit_log_by_tenant_id_partitions (
   PRIMARY KEY (( tenant_id ), partition)
 ) WITH CLUSTERING ORDER BY ( partition ASC )
 AND compaction = { 'class' :  'LeveledCompactionStrategy'  };
+
+DROP MATERIALIZED VIEW IF EXISTS thingsboard.dashboard_by_tenant_and_search_text;
+DROP MATERIALIZED VIEW IF EXISTS thingsboard.dashboard_by_customer_and_search_text;
+
+DROP TABLE IF EXISTS thingsboard.dashboard;
+
+CREATE TABLE IF NOT EXISTS thingsboard.dashboard (
+	id timeuuid,
+	tenant_id timeuuid,
+	title text,
+	search_text text,
+	assigned_customers text,
+	configuration text,
+	PRIMARY KEY (id, tenant_id)
+);
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.dashboard_by_tenant_and_search_text AS
+	SELECT *
+	from thingsboard.dashboard
+	WHERE tenant_id IS NOT NULL AND search_text IS NOT NULL AND id IS NOT NULL
+	PRIMARY KEY ( tenant_id, search_text, id )
+	WITH CLUSTERING ORDER BY ( search_text ASC, id DESC );
+
diff --git a/application/src/main/data/upgrade/1.4.0/schema_update.sql b/application/src/main/data/upgrade/1.4.0/schema_update.sql
index b2e3a97..c635414 100644
--- a/application/src/main/data/upgrade/1.4.0/schema_update.sql
+++ b/application/src/main/data/upgrade/1.4.0/schema_update.sql
@@ -29,3 +29,13 @@ CREATE TABLE IF NOT EXISTS audit_log (
     action_failure_details varchar(1000000)
 );
 
+DROP TABLE IF EXISTS dashboard;
+
+CREATE TABLE IF NOT EXISTS dashboard (
+    id varchar(31) NOT NULL CONSTRAINT dashboard_pkey PRIMARY KEY,
+    configuration varchar(10000000),
+    assigned_customers varchar(1000000),
+    search_text varchar(255),
+    tenant_id varchar(31),
+    title varchar(255)
+);
diff --git a/application/src/main/java/org/thingsboard/server/controller/BaseController.java b/application/src/main/java/org/thingsboard/server/controller/BaseController.java
index 28489ca..a72f2f3 100644
--- a/application/src/main/java/org/thingsboard/server/controller/BaseController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/BaseController.java
@@ -423,7 +423,7 @@ public abstract class BaseController {
         try {
             validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
             Dashboard dashboard = dashboardService.findDashboardById(dashboardId);
-            checkDashboard(dashboard, true);
+            checkDashboard(dashboard);
             return dashboard;
         } catch (Exception e) {
             throw handleException(e, false);
@@ -435,27 +435,23 @@ public abstract class BaseController {
             validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
             DashboardInfo dashboardInfo = dashboardService.findDashboardInfoById(dashboardId);
             SecurityUser authUser = getCurrentUser();
-            checkDashboard(dashboardInfo, authUser.getAuthority() != Authority.SYS_ADMIN);
+            checkDashboard(dashboardInfo);
             return dashboardInfo;
         } catch (Exception e) {
             throw handleException(e, false);
         }
     }
 
-    private void checkDashboard(DashboardInfo dashboard, boolean checkCustomerId) throws ThingsboardException {
+    private void checkDashboard(DashboardInfo dashboard) throws ThingsboardException {
         checkNotNull(dashboard);
         checkTenantId(dashboard.getTenantId());
         SecurityUser authUser = getCurrentUser();
         if (authUser.getAuthority() == Authority.CUSTOMER_USER) {
-            if (dashboard.getCustomerId() == null || dashboard.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
+            if (dashboard.getAssignedCustomers() == null || !dashboard.getAssignedCustomers().containsKey(authUser.getCustomerId().toString())) {
                 throw new ThingsboardException(YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION,
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
         }
-        if (checkCustomerId &&
-                dashboard.getCustomerId() != null && !dashboard.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
-            checkCustomerId(dashboard.getCustomerId());
-        }
     }
 
     ComponentDescriptor checkComponentDescriptorByClazz(String clazz) throws ThingsboardException {
diff --git a/application/src/main/java/org/thingsboard/server/controller/DashboardController.java b/application/src/main/java/org/thingsboard/server/controller/DashboardController.java
index 34320b1..30d57f3 100644
--- a/application/src/main/java/org/thingsboard/server/controller/DashboardController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/DashboardController.java
@@ -28,6 +28,8 @@ import org.thingsboard.server.common.data.id.DashboardId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageData;
+import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.exception.ThingsboardException;
@@ -80,7 +82,7 @@ public class DashboardController extends BaseController {
             Dashboard savedDashboard = checkNotNull(dashboardService.saveDashboard(dashboard));
 
             logEntityAction(savedDashboard.getId(), savedDashboard,
-                    savedDashboard.getCustomerId(),
+                    null,
                     dashboard.getId() == null ? ActionType.ADDED : ActionType.UPDATED, null);
 
             return savedDashboard;
@@ -103,7 +105,7 @@ public class DashboardController extends BaseController {
             dashboardService.deleteDashboard(dashboardId);
 
             logEntityAction(dashboardId, dashboard,
-                    dashboard.getCustomerId(),
+                    null,
                     ActionType.DELETED, null, strDashboardId);
 
         } catch (Exception e) {
@@ -134,7 +136,7 @@ public class DashboardController extends BaseController {
             Dashboard savedDashboard = checkNotNull(dashboardService.assignDashboardToCustomer(dashboardId, customerId));
 
             logEntityAction(dashboardId, savedDashboard,
-                    savedDashboard.getCustomerId(),
+                    customerId,
                     ActionType.ASSIGNED_TO_CUSTOMER, null, strDashboardId, strCustomerId, customer.getName());
 
 
@@ -150,23 +152,22 @@ public class DashboardController extends BaseController {
     }
 
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
-    @RequestMapping(value = "/customer/dashboard/{dashboardId}", method = RequestMethod.DELETE)
+    @RequestMapping(value = "/customer/{customerId}/dashboard/{dashboardId}", method = RequestMethod.DELETE)
     @ResponseBody 
-    public Dashboard unassignDashboardFromCustomer(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+    public Dashboard unassignDashboardFromCustomer(@PathVariable("customerId") String strCustomerId,
+                                                   @PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter("customerId", strCustomerId);
         checkParameter(DASHBOARD_ID, strDashboardId);
         try {
+            CustomerId customerId = new CustomerId(toUUID(strCustomerId));
+            Customer customer = checkCustomerId(customerId);
             DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
             Dashboard dashboard = checkDashboardId(dashboardId);
-            if (dashboard.getCustomerId() == null || dashboard.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
-                throw new IncorrectParameterException("Dashboard isn't assigned to any customer!");
-            }
-
-            Customer customer = checkCustomerId(dashboard.getCustomerId());
 
-            Dashboard savedDashboard = checkNotNull(dashboardService.unassignDashboardFromCustomer(dashboardId));
+            Dashboard savedDashboard = checkNotNull(dashboardService.unassignDashboardFromCustomer(dashboardId, customerId));
 
             logEntityAction(dashboardId, dashboard,
-                    dashboard.getCustomerId(),
+                    customerId,
                     ActionType.UNASSIGNED_FROM_CUSTOMER, null, strDashboardId, customer.getId().toString(), customer.getName());
 
             return savedDashboard;
@@ -192,7 +193,7 @@ public class DashboardController extends BaseController {
             Dashboard savedDashboard = checkNotNull(dashboardService.assignDashboardToCustomer(dashboardId, publicCustomer.getId()));
 
             logEntityAction(dashboardId, savedDashboard,
-                    savedDashboard.getCustomerId(),
+                    publicCustomer.getId(),
                     ActionType.ASSIGNED_TO_CUSTOMER, null, strDashboardId, publicCustomer.getId().toString(), publicCustomer.getName());
 
             return savedDashboard;
@@ -206,6 +207,33 @@ public class DashboardController extends BaseController {
         }
     }
 
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/customer/public/dashboard/{dashboardId}", method = RequestMethod.DELETE)
+    @ResponseBody
+    public Dashboard unassignDashboardFromPublicCustomer(@PathVariable(DASHBOARD_ID) String strDashboardId) throws ThingsboardException {
+        checkParameter(DASHBOARD_ID, strDashboardId);
+        try {
+            DashboardId dashboardId = new DashboardId(toUUID(strDashboardId));
+            Dashboard dashboard = checkDashboardId(dashboardId);
+            Customer publicCustomer = customerService.findOrCreatePublicCustomer(dashboard.getTenantId());
+
+            Dashboard savedDashboard = checkNotNull(dashboardService.unassignDashboardFromCustomer(dashboardId, publicCustomer.getId()));
+
+            logEntityAction(dashboardId, dashboard,
+                    publicCustomer.getId(),
+                    ActionType.UNASSIGNED_FROM_CUSTOMER, null, strDashboardId, publicCustomer.getId().toString(), publicCustomer.getName());
+
+            return savedDashboard;
+        } catch (Exception e) {
+
+            logEntityAction(emptyId(EntityType.DASHBOARD), null,
+                    null,
+                    ActionType.UNASSIGNED_FROM_CUSTOMER, e, strDashboardId);
+
+            throw handleException(e);
+        }
+    }
+
     @PreAuthorize("hasAuthority('SYS_ADMIN')")
     @RequestMapping(value = "/tenant/{tenantId}/dashboards", params = { "limit" }, method = RequestMethod.GET)
     @ResponseBody
@@ -245,19 +273,20 @@ public class DashboardController extends BaseController {
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/customer/{customerId}/dashboards", params = { "limit" }, method = RequestMethod.GET)
     @ResponseBody
-    public TextPageData<DashboardInfo> getCustomerDashboards(
+    public TimePageData<DashboardInfo> getCustomerDashboards(
             @PathVariable("customerId") String strCustomerId,
             @RequestParam int limit,
-            @RequestParam(required = false) String textSearch,
-            @RequestParam(required = false) String idOffset,
-            @RequestParam(required = false) String textOffset) throws ThingsboardException {
+            @RequestParam(required = false) Long startTime,
+            @RequestParam(required = false) Long endTime,
+            @RequestParam(required = false, defaultValue = "false") boolean ascOrder,
+            @RequestParam(required = false) String offset) throws ThingsboardException {
         checkParameter("customerId", strCustomerId);
         try {
             TenantId tenantId = getCurrentUser().getTenantId();
             CustomerId customerId = new CustomerId(toUUID(strCustomerId));
             checkCustomerId(customerId);
-            TextPageLink pageLink = createPageLink(limit, textSearch, idOffset, textOffset);
-            return checkNotNull(dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink));
+            TimePageLink pageLink = createPageLink(limit, startTime, endTime, ascOrder, offset);
+            return checkNotNull(dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink).get());
         } catch (Exception e) {
             throw handleException(e);
         }
diff --git a/application/src/main/java/org/thingsboard/server/service/install/CassandraDatabaseUpgradeService.java b/application/src/main/java/org/thingsboard/server/service/install/CassandraDatabaseUpgradeService.java
index dacf453..e369153 100644
--- a/application/src/main/java/org/thingsboard/server/service/install/CassandraDatabaseUpgradeService.java
+++ b/application/src/main/java/org/thingsboard/server/service/install/CassandraDatabaseUpgradeService.java
@@ -24,6 +24,7 @@ import org.springframework.context.annotation.Profile;
 import org.springframework.stereotype.Service;
 import org.thingsboard.server.dao.cassandra.CassandraCluster;
 import org.thingsboard.server.dao.cassandra.CassandraInstallCluster;
+import org.thingsboard.server.dao.dashboard.DashboardService;
 import org.thingsboard.server.dao.util.NoSqlDao;
 import org.thingsboard.server.service.install.cql.CQLStatementsParser;
 import org.thingsboard.server.service.install.cql.CassandraDbHelper;
@@ -33,6 +34,8 @@ import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
 
+import static org.thingsboard.server.service.install.DatabaseHelper.*;
+
 @Service
 @NoSqlDao
 @Profile("install")
@@ -40,12 +43,6 @@ import java.util.List;
 public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
 
     private static final String SCHEMA_UPDATE_CQL = "schema_update.cql";
-    public static final String DEVICE = "device";
-    public static final String TENANT_ID = "tenant_id";
-    public static final String CUSTOMER_ID = "customer_id";
-    public static final String SEARCH_TEXT = "search_text";
-    public static final String ADDITIONAL_INFO = "additional_info";
-    public static final String ASSET = "asset";
 
     @Value("${install.data_dir}")
     private String dataDir;
@@ -56,6 +53,9 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
     @Autowired
     private CassandraInstallCluster installCluster;
 
+    @Autowired
+    private DashboardService dashboardService;
+
     @Override
     public void upgradeDatabase(String fromVersion) throws Exception {
 
@@ -160,10 +160,32 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
             case "1.3.0":
                 break;
             case "1.3.1":
+
+                cluster.getSession();
+
+                ks = cluster.getCluster().getMetadata().getKeyspace(cluster.getKeyspaceName());
+
+                log.info("Dumping dashboards ...");
+                Path dashboardsDump = CassandraDbHelper.dumpCfIfExists(ks, cluster.getSession(), DASHBOARD,
+                        new String[]{ID, TENANT_ID, CUSTOMER_ID, TITLE, SEARCH_TEXT, ASSIGNED_CUSTOMERS, CONFIGURATION},
+                        new String[]{"", "", "", "", "", "", ""},
+                        "tb-dashboards");
+                log.info("Dashboards dumped.");
+
+
                 log.info("Updating schema ...");
                 schemaUpdateFile = Paths.get(this.dataDir, "upgrade", "1.4.0", SCHEMA_UPDATE_CQL);
                 loadCql(schemaUpdateFile);
                 log.info("Schema updated.");
+
+                log.info("Restoring dashboards ...");
+                if (dashboardsDump != null) {
+                    CassandraDbHelper.loadCf(ks, cluster.getSession(), DASHBOARD,
+                            new String[]{ID, TENANT_ID, TITLE, SEARCH_TEXT, CONFIGURATION}, dashboardsDump);
+                    DatabaseHelper.upgradeTo40_assignDashboards(dashboardsDump, dashboardService, false);
+                    Files.deleteIfExists(dashboardsDump);
+                }
+                log.info("Dashboards restored.");
                 break;
             default:
                 throw new RuntimeException("Unable to upgrade Cassandra database, unsupported fromVersion: " + fromVersion);
diff --git a/application/src/main/java/org/thingsboard/server/service/install/cql/CassandraDbHelper.java b/application/src/main/java/org/thingsboard/server/service/install/cql/CassandraDbHelper.java
index 0a411f6..ef4610e 100644
--- a/application/src/main/java/org/thingsboard/server/service/install/cql/CassandraDbHelper.java
+++ b/application/src/main/java/org/thingsboard/server/service/install/cql/CassandraDbHelper.java
@@ -17,7 +17,6 @@
 package org.thingsboard.server.service.install.cql;
 
 import com.datastax.driver.core.*;
-import org.apache.commons.csv.CSVFormat;
 import org.apache.commons.csv.CSVParser;
 import org.apache.commons.csv.CSVPrinter;
 import org.apache.commons.csv.CSVRecord;
@@ -28,9 +27,9 @@ import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 import java.util.*;
 
-public class CassandraDbHelper {
+import static org.thingsboard.server.service.install.DatabaseHelper.CSV_DUMP_FORMAT;
 
-    private static final CSVFormat CSV_DUMP_FORMAT = CSVFormat.DEFAULT.withNullString("\\N");
+public class CassandraDbHelper {
 
     public static Path dumpCfIfExists(KeyspaceMetadata ks, Session session, String cfName,
                                       String[] columns, String[] defaultValues, String dumpPrefix) throws Exception {
diff --git a/application/src/main/java/org/thingsboard/server/service/install/DatabaseHelper.java b/application/src/main/java/org/thingsboard/server/service/install/DatabaseHelper.java
new file mode 100644
index 0000000..44f42dd
--- /dev/null
+++ b/application/src/main/java/org/thingsboard/server/service/install/DatabaseHelper.java
@@ -0,0 +1,93 @@
+/**
+ * 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.service.install;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.csv.CSVFormat;
+import org.apache.commons.csv.CSVParser;
+import org.apache.commons.lang3.StringUtils;
+import com.fasterxml.jackson.databind.JsonNode;
+import org.thingsboard.server.common.data.UUIDConverter;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.DashboardId;
+import org.thingsboard.server.dao.dashboard.DashboardService;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.*;
+
+/**
+ * Created by igor on 2/27/18.
+ */
+@Slf4j
+public class DatabaseHelper {
+
+    public static final CSVFormat CSV_DUMP_FORMAT = CSVFormat.DEFAULT.withNullString("\\N");
+
+    public static final String DEVICE = "device";
+    public static final String TENANT_ID = "tenant_id";
+    public static final String CUSTOMER_ID = "customer_id";
+    public static final String SEARCH_TEXT = "search_text";
+    public static final String ADDITIONAL_INFO = "additional_info";
+    public static final String ASSET = "asset";
+    public static final String DASHBOARD = "dashboard";
+    public static final String ID = "id";
+    public static final String TITLE = "title";
+    public static final String ASSIGNED_CUSTOMERS = "assigned_customers";
+    public static final String CONFIGURATION = "configuration";
+
+    public static final ObjectMapper objectMapper = new ObjectMapper();
+
+    public static void upgradeTo40_assignDashboards(Path dashboardsDump, DashboardService dashboardService, boolean sql) throws Exception {
+        String[] columns = new String[]{ID, TENANT_ID, CUSTOMER_ID, TITLE, SEARCH_TEXT, ASSIGNED_CUSTOMERS, CONFIGURATION};
+        try (CSVParser csvParser = new CSVParser(Files.newBufferedReader(dashboardsDump), CSV_DUMP_FORMAT.withHeader(columns))) {
+            csvParser.forEach(record -> {
+                String customerIdString = record.get(CUSTOMER_ID);
+                String assignedCustomersString = record.get(ASSIGNED_CUSTOMERS);
+                DashboardId dashboardId = new DashboardId(toUUID(record.get(ID), sql));
+                List<CustomerId> customerIds = new ArrayList<>();
+                if (!StringUtils.isEmpty(assignedCustomersString)) {
+                    try {
+                        JsonNode assignedCustomersJson = objectMapper.readTree(assignedCustomersString);
+                        Map<String,String> assignedCustomers = objectMapper.treeToValue(assignedCustomersJson, HashMap.class);
+                        assignedCustomers.forEach((strCustomerId, title) -> {
+                            customerIds.add(new CustomerId(UUID.fromString(strCustomerId)));
+                        });
+                    } catch (IOException e) {
+                        log.error("Unable to parse assigned customers field", e);
+                    }
+                }
+                if (!StringUtils.isEmpty(customerIdString)) {
+                    customerIds.add(new CustomerId(toUUID(customerIdString, sql)));
+                }
+                for (CustomerId customerId : customerIds) {
+                    dashboardService.assignDashboardToCustomer(dashboardId, customerId);
+                }
+            });
+        }
+    }
+
+    private static UUID toUUID(String src, boolean sql) {
+        if (sql) {
+            return UUIDConverter.fromString(src);
+        } else {
+            return UUID.fromString(src);
+        }
+    }
+
+}
diff --git a/application/src/main/java/org/thingsboard/server/service/install/DefaultSystemDataLoaderService.java b/application/src/main/java/org/thingsboard/server/service/install/DefaultSystemDataLoaderService.java
index 4e81f94..a102dcb 100644
--- a/application/src/main/java/org/thingsboard/server/service/install/DefaultSystemDataLoaderService.java
+++ b/application/src/main/java/org/thingsboard/server/service/install/DefaultSystemDataLoaderService.java
@@ -339,8 +339,10 @@ public class DefaultSystemDataLoaderService implements SystemDataLoaderService {
                             JsonNode dashboardJson = objectMapper.readTree(path.toFile());
                             Dashboard dashboard = objectMapper.treeToValue(dashboardJson, Dashboard.class);
                             dashboard.setTenantId(tenantId);
-                            dashboard.setCustomerId(customerId);
-                            dashboardService.saveDashboard(dashboard);
+                            Dashboard savedDashboard = dashboardService.saveDashboard(dashboard);
+                            if (customerId != null && !customerId.isNullUid()) {
+                                dashboardService.assignDashboardToCustomer(savedDashboard.getId(), customerId);
+                            }
                         } catch (Exception e) {
                             log.error("Unable to load dashboard from json: [{}]", path.toString());
                             throw new RuntimeException("Unable to load dashboard from json", e);
diff --git a/application/src/main/java/org/thingsboard/server/service/install/sql/SqlDbHelper.java b/application/src/main/java/org/thingsboard/server/service/install/sql/SqlDbHelper.java
new file mode 100644
index 0000000..fa5175f
--- /dev/null
+++ b/application/src/main/java/org/thingsboard/server/service/install/sql/SqlDbHelper.java
@@ -0,0 +1,146 @@
+/**
+ * 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.service.install.sql;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.csv.CSVParser;
+import org.apache.commons.csv.CSVPrinter;
+import org.apache.commons.csv.CSVRecord;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.thingsboard.server.service.install.DatabaseHelper.CSV_DUMP_FORMAT;
+
+/**
+ * Created by igor on 2/27/18.
+ */
+@Slf4j
+public class SqlDbHelper {
+
+    public static Path dumpTableIfExists(Connection conn, String tableName,
+                                         String[] columns, String[] defaultValues, String dumpPrefix) throws Exception {
+
+        DatabaseMetaData metaData = conn.getMetaData();
+        ResultSet res = metaData.getTables(null, null, tableName,
+                new String[] {"TABLE"});
+        if (res.next()) {
+            res.close();
+            Path dumpFile = Files.createTempFile(dumpPrefix, null);
+            Files.deleteIfExists(dumpFile);
+            try (CSVPrinter csvPrinter = new CSVPrinter(Files.newBufferedWriter(dumpFile), CSV_DUMP_FORMAT)) {
+                try (PreparedStatement stmt = conn.prepareStatement("SELECT * FROM " + tableName)) {
+                    try (ResultSet tableRes = stmt.executeQuery()) {
+                        ResultSetMetaData resMetaData = tableRes.getMetaData();
+                        Map<String, Integer> columnIndexMap = new HashMap<>();
+                        for (int i = 0; i < resMetaData.getColumnCount(); i++) {
+                            String columnName = resMetaData.getColumnName(i);
+                            columnIndexMap.put(columnName, i);
+                        }
+                        while(tableRes.next()) {
+                            dumpRow(tableRes, columnIndexMap, columns, defaultValues, csvPrinter);
+                        }
+                    }
+                }
+            }
+            return dumpFile;
+        } else {
+            return null;
+        }
+    }
+
+    public static void loadTable(Connection conn, String tableName, String[] columns, Path sourceFile) throws Exception {
+        PreparedStatement prepared = conn.prepareStatement(createInsertStatement(tableName, columns));
+        prepared.getParameterMetaData();
+        try (CSVParser csvParser = new CSVParser(Files.newBufferedReader(sourceFile), CSV_DUMP_FORMAT.withHeader(columns))) {
+            csvParser.forEach(record -> {
+                try {
+                    for (int i=0;i<columns.length;i++) {
+                        setColumnValue(i, columns[i], record, prepared);
+                    }
+                    prepared.execute();
+                } catch (SQLException e) {
+                    log.error("Unable to load table record!", e);
+                }
+            });
+        }
+    }
+
+    private static void dumpRow(ResultSet res, Map<String, Integer> columnIndexMap, String[] columns,
+                                String[] defaultValues, CSVPrinter csvPrinter) throws Exception {
+        List<String> record = new ArrayList<>();
+        for (int i=0;i<columns.length;i++) {
+            String column = columns[i];
+            String defaultValue;
+            if (defaultValues != null && i < defaultValues.length) {
+                defaultValue = defaultValues[i];
+            } else {
+                defaultValue = "";
+            }
+            record.add(getColumnValue(column, defaultValue, columnIndexMap, res));
+        }
+        csvPrinter.printRecord(record);
+    }
+
+    private static String getColumnValue(String column, String defaultValue, Map<String, Integer> columnIndexMap, ResultSet res) {
+        int index = columnIndexMap.containsKey(column) ? columnIndexMap.get(column) : -1;
+        if (index > -1) {
+            String str;
+            try {
+                Object obj = res.getObject(index);
+                if (obj == null) {
+                    str = "";
+                } else {
+                    str = obj.toString();
+                }
+            } catch (Exception e) {
+                str = "";
+            }
+            return str;
+        } else {
+            return defaultValue;
+        }
+    }
+
+    private static void setColumnValue(int index, String column,
+                                       CSVRecord record, PreparedStatement preparedStatement) throws SQLException {
+        String value = record.get(column);
+        int type = preparedStatement.getParameterMetaData().getParameterType(index + 1);
+        preparedStatement.setObject(index + 1, value, type);
+    }
+
+    private static String createInsertStatement(String tableName, String[] columns) {
+        StringBuilder insertStatementBuilder = new StringBuilder();
+        insertStatementBuilder.append("INSERT INTO ").append(tableName).append(" (");
+        for (String column : columns) {
+            insertStatementBuilder.append(column).append(",");
+        }
+        insertStatementBuilder.deleteCharAt(insertStatementBuilder.length() - 1);
+        insertStatementBuilder.append(") VALUES (");
+        for (String column : columns) {
+            insertStatementBuilder.append("?").append(",");
+        }
+        insertStatementBuilder.deleteCharAt(insertStatementBuilder.length() - 1);
+        insertStatementBuilder.append(")");
+        return insertStatementBuilder.toString();
+    }
+
+}
diff --git a/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java b/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java
index 098b4fe..e1e1e5f 100644
--- a/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java
+++ b/application/src/main/java/org/thingsboard/server/service/install/SqlDatabaseUpgradeService.java
@@ -17,18 +17,26 @@
 package org.thingsboard.server.service.install;
 
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Profile;
 import org.springframework.stereotype.Service;
+import org.thingsboard.server.dao.dashboard.DashboardService;
 import org.thingsboard.server.dao.util.SqlDao;
+import org.thingsboard.server.service.install.cql.CassandraDbHelper;
+import org.thingsboard.server.service.install.sql.SqlDbHelper;
 
 import java.nio.charset.Charset;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.sql.Connection;
+import java.sql.DatabaseMetaData;
 import java.sql.DriverManager;
 
+import static org.thingsboard.server.service.install.DatabaseHelper.*;
+import static org.thingsboard.server.service.install.DatabaseHelper.CONFIGURATION;
+
 @Service
 @Profile("install")
 @Slf4j
@@ -49,6 +57,9 @@ public class SqlDatabaseUpgradeService implements DatabaseUpgradeService {
     @Value("${spring.datasource.password}")
     private String dbPassword;
 
+    @Autowired
+    private DashboardService dashboardService;
+
     @Override
     public void upgradeDatabase(String fromVersion) throws Exception {
         switch (fromVersion) {
@@ -62,13 +73,30 @@ public class SqlDatabaseUpgradeService implements DatabaseUpgradeService {
                 log.info("Schema updated.");
                 break;
             case "1.3.1":
-                log.info("Updating schema ...");
-                schemaUpdateFile = Paths.get(this.dataDir, "upgrade", "1.4.0", SCHEMA_UPDATE_SQL);
                 try (Connection conn = DriverManager.getConnection(dbUrl, dbUserName, dbPassword)) {
+
+                    log.info("Dumping dashboards ...");
+                    Path dashboardsDump = SqlDbHelper.dumpTableIfExists(conn, DASHBOARD,
+                            new String[]{ID, TENANT_ID, CUSTOMER_ID, TITLE, SEARCH_TEXT, ASSIGNED_CUSTOMERS, CONFIGURATION},
+                            new String[]{"", "", "", "", "", "", ""},
+                            "tb-dashboards");
+                    log.info("Dashboards dumped.");
+
+                    log.info("Updating schema ...");
+                    schemaUpdateFile = Paths.get(this.dataDir, "upgrade", "1.4.0", SCHEMA_UPDATE_SQL);
                     String sql = new String(Files.readAllBytes(schemaUpdateFile), Charset.forName("UTF-8"));
                     conn.createStatement().execute(sql); //NOSONAR, ignoring because method used to execute thingsboard database upgrade script
+                    log.info("Schema updated.");
+
+                    log.info("Restoring dashboards ...");
+                    if (dashboardsDump != null) {
+                        SqlDbHelper.loadTable(conn, DASHBOARD,
+                                new String[]{ID, TENANT_ID, TITLE, SEARCH_TEXT, CONFIGURATION}, dashboardsDump);
+                        DatabaseHelper.upgradeTo40_assignDashboards(dashboardsDump, dashboardService, true);
+                        Files.deleteIfExists(dashboardsDump);
+                    }
+                    log.info("Dashboards restored.");
                 }
-                log.info("Schema updated.");
                 break;
             default:
                 throw new RuntimeException("Unable to upgrade SQL database, unsupported fromVersion: " + fromVersion);
diff --git a/application/src/test/java/org/thingsboard/server/controller/BaseDashboardControllerTest.java b/application/src/test/java/org/thingsboard/server/controller/BaseDashboardControllerTest.java
index bb06411..434862b 100644
--- a/application/src/test/java/org/thingsboard/server/controller/BaseDashboardControllerTest.java
+++ b/application/src/test/java/org/thingsboard/server/controller/BaseDashboardControllerTest.java
@@ -19,6 +19,7 @@ import static org.hamcrest.Matchers.containsString;
 import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
+import java.sql.Time;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -29,6 +30,8 @@ import org.thingsboard.server.common.data.*;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageData;
+import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.common.data.security.Authority;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.junit.After;
@@ -82,8 +85,6 @@ public abstract class BaseDashboardControllerTest extends AbstractControllerTest
         Assert.assertNotNull(savedDashboard.getId());
         Assert.assertTrue(savedDashboard.getCreatedTime() > 0);
         Assert.assertEquals(savedTenant.getId(), savedDashboard.getTenantId());
-        Assert.assertNotNull(savedDashboard.getCustomerId());
-        Assert.assertEquals(NULL_UUID, savedDashboard.getCustomerId().getId());
         Assert.assertEquals(dashboard.getTitle(), savedDashboard.getTitle());
         
         savedDashboard.setTitle("My new dashboard");
@@ -136,17 +137,20 @@ public abstract class BaseDashboardControllerTest extends AbstractControllerTest
         
         Dashboard assignedDashboard = doPost("/api/customer/" + savedCustomer.getId().getId().toString() 
                 + "/dashboard/" + savedDashboard.getId().getId().toString(), Dashboard.class);
-        Assert.assertEquals(savedCustomer.getId(), assignedDashboard.getCustomerId());
-        
+
+        Assert.assertTrue(assignedDashboard.getAssignedCustomers().containsKey(savedCustomer.getId().toString()));
+
         Dashboard foundDashboard = doGet("/api/dashboard/" + savedDashboard.getId().getId().toString(), Dashboard.class);
-        Assert.assertEquals(savedCustomer.getId(), foundDashboard.getCustomerId());
+        Assert.assertTrue(foundDashboard.getAssignedCustomers().containsKey(savedCustomer.getId().toString()));
 
         Dashboard unassignedDashboard = 
-                doDelete("/api/customer/dashboard/" + savedDashboard.getId().getId().toString(), Dashboard.class);
-        Assert.assertEquals(ModelConstants.NULL_UUID, unassignedDashboard.getCustomerId().getId());
-        
+                doDelete("/api/customer/"+savedCustomer.getId().getId().toString()+"/dashboard/" + savedDashboard.getId().getId().toString(), Dashboard.class);
+
+        Assert.assertTrue(unassignedDashboard.getAssignedCustomers() == null || unassignedDashboard.getAssignedCustomers().isEmpty());
+
         foundDashboard = doGet("/api/dashboard/" + savedDashboard.getId().getId().toString(), Dashboard.class);
-        Assert.assertEquals(ModelConstants.NULL_UUID, foundDashboard.getCustomerId().getId());
+
+        Assert.assertTrue(foundDashboard.getAssignedCustomers() == null || foundDashboard.getAssignedCustomers().isEmpty());
     }
     
     @Test
@@ -320,11 +324,11 @@ public abstract class BaseDashboardControllerTest extends AbstractControllerTest
         }
         
         List<DashboardInfo> loadedDashboards = new ArrayList<>();
-        TextPageLink pageLink = new TextPageLink(21);
-        TextPageData<DashboardInfo> pageData = null;
+        TimePageLink pageLink = new TimePageLink(21);
+        TimePageData<DashboardInfo> pageData = null;
         do {
-            pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/dashboards?", 
-                    new TypeReference<TextPageData<DashboardInfo>>(){}, pageLink);
+            pageData = doGetTypedWithTimePageLink("/api/customer/" + customerId.getId().toString() + "/dashboards?",
+                    new TypeReference<TimePageData<DashboardInfo>>(){}, pageLink);
             loadedDashboards.addAll(pageData.getData());
             if (pageData.hasNext()) {
                 pageLink = pageData.getNextPageLink();
@@ -336,93 +340,5 @@ public abstract class BaseDashboardControllerTest extends AbstractControllerTest
         
         Assert.assertEquals(dashboards, loadedDashboards);
     }
-    
-    @Test
-    public void testFindCustomerDashboardsByTitle() throws Exception {
-        Customer customer = new Customer();
-        customer.setTitle("Test customer");
-        customer = doPost("/api/customer", customer, Customer.class);
-        CustomerId customerId = customer.getId();
-
-        String title1 = "Dashboard title 1";
-        List<DashboardInfo> dashboardsTitle1 = new ArrayList<>();
-        for (int i=0;i<125;i++) {
-            Dashboard dashboard = new Dashboard();
-            String suffix = RandomStringUtils.randomAlphanumeric((int)(Math.random()*15));
-            String title = title1+suffix;
-            title = i % 2 == 0 ? title.toLowerCase() : title.toUpperCase();
-            dashboard.setTitle(title);
-            dashboard = doPost("/api/dashboard", dashboard, Dashboard.class);
-            dashboardsTitle1.add(new DashboardInfo(doPost("/api/customer/" + customerId.getId().toString()
-                    + "/dashboard/" + dashboard.getId().getId().toString(), Dashboard.class)));
-        }
-        String title2 = "Dashboard title 2";
-        List<DashboardInfo> dashboardsTitle2 = new ArrayList<>();
-        for (int i=0;i<143;i++) {
-            Dashboard dashboard = new Dashboard();
-            String suffix = RandomStringUtils.randomAlphanumeric((int)(Math.random()*15));
-            String title = title2+suffix;
-            title = i % 2 == 0 ? title.toLowerCase() : title.toUpperCase();
-            dashboard.setTitle(title);
-            dashboard = doPost("/api/dashboard", dashboard, Dashboard.class);
-            dashboardsTitle2.add(new DashboardInfo(doPost("/api/customer/" + customerId.getId().toString()
-                    + "/dashboard/" + dashboard.getId().getId().toString(), Dashboard.class)));
-        }
-        
-        List<DashboardInfo> loadedDashboardsTitle1 = new ArrayList<>();
-        TextPageLink pageLink = new TextPageLink(18, title1);
-        TextPageData<DashboardInfo> pageData = null;
-        do {
-            pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/dashboards?", 
-                    new TypeReference<TextPageData<DashboardInfo>>(){}, pageLink);
-            loadedDashboardsTitle1.addAll(pageData.getData());
-            if (pageData.hasNext()) {
-                pageLink = pageData.getNextPageLink();
-            }
-        } while (pageData.hasNext());
-        
-        Collections.sort(dashboardsTitle1, idComparator);
-        Collections.sort(loadedDashboardsTitle1, idComparator);
-        
-        Assert.assertEquals(dashboardsTitle1, loadedDashboardsTitle1);
-        
-        List<DashboardInfo> loadedDashboardsTitle2 = new ArrayList<>();
-        pageLink = new TextPageLink(7, title2);
-        do {
-            pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/dashboards?", 
-                    new TypeReference<TextPageData<DashboardInfo>>(){}, pageLink);
-            loadedDashboardsTitle2.addAll(pageData.getData());
-            if (pageData.hasNext()) {
-                pageLink = pageData.getNextPageLink();
-            }
-        } while (pageData.hasNext());
-
-        Collections.sort(dashboardsTitle2, idComparator);
-        Collections.sort(loadedDashboardsTitle2, idComparator);
-        
-        Assert.assertEquals(dashboardsTitle2, loadedDashboardsTitle2);
-        
-        for (DashboardInfo dashboard : loadedDashboardsTitle1) {
-            doDelete("/api/customer/dashboard/" + dashboard.getId().getId().toString())
-            .andExpect(status().isOk());
-        }
-        
-        pageLink = new TextPageLink(5, title1);
-        pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/dashboards?", 
-                new TypeReference<TextPageData<DashboardInfo>>(){}, pageLink);
-        Assert.assertFalse(pageData.hasNext());
-        Assert.assertEquals(0, pageData.getData().size());
-        
-        for (DashboardInfo dashboard : loadedDashboardsTitle2) {
-            doDelete("/api/customer/dashboard/" + dashboard.getId().getId().toString())
-            .andExpect(status().isOk());
-        }
-        
-        pageLink = new TextPageLink(9, title2);
-        pageData = doGetTypedWithPageLink("/api/customer/" + customerId.getId().toString() + "/dashboards?", 
-                new TypeReference<TextPageData<DashboardInfo>>(){}, pageLink);
-        Assert.assertFalse(pageData.hasNext());
-        Assert.assertEquals(0, pageData.getData().size());
-    }
 
 }
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/Dashboard.java b/common/data/src/main/java/org/thingsboard/server/common/data/Dashboard.java
index 71f2b13..fa9f048 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/Dashboard.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/Dashboard.java
@@ -79,8 +79,6 @@ public class Dashboard extends DashboardInfo {
         StringBuilder builder = new StringBuilder();
         builder.append("Dashboard [tenantId=");
         builder.append(getTenantId());
-        builder.append(", customerId=");
-        builder.append(getCustomerId());
         builder.append(", title=");
         builder.append(getTitle());
         builder.append(", configuration=");
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java b/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java
index 15898c6..7e18dc6 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/DashboardInfo.java
@@ -20,11 +20,16 @@ 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 java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
 public class DashboardInfo extends SearchTextBased<DashboardId> implements HasName {
 
     private TenantId tenantId;
-    private CustomerId customerId;
     private String title;
+    private Map<String, String> assignedCustomers;
 
     public DashboardInfo() {
         super();
@@ -37,8 +42,8 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
     public DashboardInfo(DashboardInfo dashboardInfo) {
         super(dashboardInfo);
         this.tenantId = dashboardInfo.getTenantId();
-        this.customerId = dashboardInfo.getCustomerId();
         this.title = dashboardInfo.getTitle();
+        this.assignedCustomers = dashboardInfo.getAssignedCustomers();
     }
 
     public TenantId getTenantId() {
@@ -49,14 +54,6 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
         this.tenantId = tenantId;
     }
 
-    public CustomerId getCustomerId() {
-        return customerId;
-    }
-
-    public void setCustomerId(CustomerId customerId) {
-        this.customerId = customerId;
-    }
-
     public String getTitle() {
         return title;
     }
@@ -65,6 +62,44 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
         this.title = title;
     }
 
+    public Map<String, String> getAssignedCustomers() {
+        return assignedCustomers;
+    }
+
+    public void setAssignedCustomers(Map<String, String> assignedCustomers) {
+        this.assignedCustomers = assignedCustomers;
+    }
+
+    public boolean addAssignedCustomer(CustomerId customerId, String title) {
+        if (this.assignedCustomers != null && this.assignedCustomers.containsKey(customerId.toString())) {
+            return false;
+        } else {
+            if (this.assignedCustomers == null) {
+                this.assignedCustomers = new HashMap<>();
+            }
+            this.assignedCustomers.put(customerId.toString(), title);
+            return true;
+        }
+    }
+
+    public boolean updateAssignedCustomer(CustomerId customerId, String title) {
+        if (this.assignedCustomers != null && this.assignedCustomers.containsKey(customerId.toString())) {
+            this.assignedCustomers.put(customerId.toString(), title);
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public boolean removeAssignedCustomer(CustomerId customerId) {
+        if (this.assignedCustomers != null && this.assignedCustomers.containsKey(customerId.toString())) {
+            this.assignedCustomers.remove(customerId.toString());
+            return true;
+        } else {
+            return false;
+        }
+    }
+
     @Override
     @JsonProperty(access = JsonProperty.Access.READ_ONLY)
     public String getName() {
@@ -80,7 +115,6 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
     public int hashCode() {
         final int prime = 31;
         int result = super.hashCode();
-        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
         result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
         result = prime * result + ((title == null) ? 0 : title.hashCode());
         return result;
@@ -95,11 +129,6 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
         if (getClass() != obj.getClass())
             return false;
         DashboardInfo other = (DashboardInfo) obj;
-        if (customerId == null) {
-            if (other.customerId != null)
-                return false;
-        } else if (!customerId.equals(other.customerId))
-            return false;
         if (tenantId == null) {
             if (other.tenantId != null)
                 return false;
@@ -118,8 +147,6 @@ public class DashboardInfo extends SearchTextBased<DashboardId> implements HasNa
         StringBuilder builder = new StringBuilder();
         builder.append("DashboardInfo [tenantId=");
         builder.append(tenantId);
-        builder.append(", customerId=");
-        builder.append(customerId);
         builder.append(", title=");
         builder.append(title);
         builder.append("]");
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/relation/RelationTypeGroup.java b/common/data/src/main/java/org/thingsboard/server/common/data/relation/RelationTypeGroup.java
index 82798ab..7c9c5e6 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/relation/RelationTypeGroup.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/relation/RelationTypeGroup.java
@@ -18,6 +18,7 @@ package org.thingsboard.server.common.data.relation;
 public enum RelationTypeGroup {
 
     COMMON,
-    ALARM
+    ALARM,
+    DASHBOARD
 
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/customer/CustomerServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/customer/CustomerServiceImpl.java
index f76d654..f118aff 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/customer/CustomerServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/customer/CustomerServiceImpl.java
@@ -97,7 +97,9 @@ public class CustomerServiceImpl extends AbstractEntityService implements Custom
     public Customer saveCustomer(Customer customer) {
         log.trace("Executing saveCustomer [{}]", customer);
         customerValidator.validate(customer);
-        return customerDao.save(customer);
+        Customer savedCustomer = customerDao.save(customer);
+        dashboardService.updateCustomerDashboards(savedCustomer.getTenantId(), savedCustomer.getId(), savedCustomer.getTitle());
+        return savedCustomer;
     }
 
     @Override
diff --git a/dao/src/main/java/org/thingsboard/server/dao/dashboard/CassandraDashboardInfoDao.java b/dao/src/main/java/org/thingsboard/server/dao/dashboard/CassandraDashboardInfoDao.java
index d0651a4..5f35913 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/dashboard/CassandraDashboardInfoDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/dashboard/CassandraDashboardInfoDao.java
@@ -15,16 +15,26 @@
  */
 package org.thingsboard.server.dao.dashboard;
 
+import com.google.common.util.concurrent.AsyncFunction;
+import com.google.common.util.concurrent.Futures;
+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.DashboardInfo;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.page.TextPageLink;
+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.DaoUtil;
 import org.thingsboard.server.dao.model.nosql.DashboardInfoEntity;
 import org.thingsboard.server.dao.nosql.CassandraAbstractSearchTextDao;
+import org.thingsboard.server.dao.relation.RelationDao;
 import org.thingsboard.server.dao.util.NoSqlDao;
 
-import java.util.Arrays;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.UUID;
@@ -37,6 +47,9 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @NoSqlDao
 public class CassandraDashboardInfoDao extends CassandraAbstractSearchTextDao<DashboardInfoEntity, DashboardInfo> implements DashboardInfoDao {
 
+    @Autowired
+    private RelationDao relationDao;
+
     @Override
     protected Class<DashboardInfoEntity> getColumnFamilyClass() {
         return DashboardInfoEntity.class;
@@ -59,15 +72,18 @@ public class CassandraDashboardInfoDao extends CassandraAbstractSearchTextDao<Da
     }
 
     @Override
-    public List<DashboardInfo> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
+    public ListenableFuture<List<DashboardInfo>> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TimePageLink pageLink) {
         log.debug("Try to find dashboards by tenantId [{}], customerId[{}] and pageLink [{}]", tenantId, customerId, pageLink);
-        List<DashboardInfoEntity> dashboardEntities = findPageWithTextSearch(DASHBOARD_BY_CUSTOMER_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME,
-                Arrays.asList(eq(DASHBOARD_CUSTOMER_ID_PROPERTY, customerId),
-                        eq(DASHBOARD_TENANT_ID_PROPERTY, tenantId)),
-                pageLink);
 
-        log.trace("Found dashboards [{}] by tenantId [{}], customerId [{}] and pageLink [{}]", dashboardEntities, tenantId, customerId, pageLink);
-        return DaoUtil.convertDataList(dashboardEntities);
+        ListenableFuture<List<EntityRelation>> relations = relationDao.findRelations(new CustomerId(customerId), EntityRelation.CONTAINS_TYPE, RelationTypeGroup.DASHBOARD, EntityType.DASHBOARD, pageLink);
+
+        return Futures.transform(relations, (AsyncFunction<List<EntityRelation>, List<DashboardInfo>>) input -> {
+            List<ListenableFuture<DashboardInfo>> dashboardFutures = new ArrayList<>(input.size());
+            for (EntityRelation relation : input) {
+                dashboardFutures.add(findByIdAsync(relation.getTo().getId()));
+            }
+            return Futures.successfulAsList(dashboardFutures);
+        });
     }
 
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardInfoDao.java b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardInfoDao.java
index a26bd14..baa020f 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardInfoDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardInfoDao.java
@@ -15,8 +15,10 @@
  */
 package org.thingsboard.server.dao.dashboard;
 
+import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.DashboardInfo;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.dao.Dao;
 
 import java.util.List;
@@ -44,6 +46,6 @@ public interface DashboardInfoDao extends Dao<DashboardInfo> {
      * @param pageLink the page link
      * @return the list of dashboard objects
      */
-    List<DashboardInfo> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink);
+    ListenableFuture<List<DashboardInfo>> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TimePageLink pageLink);
 
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardService.java b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardService.java
index 74d8544..f4af29c 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardService.java
@@ -23,6 +23,10 @@ import org.thingsboard.server.common.data.id.DashboardId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageData;
+import org.thingsboard.server.common.data.page.TimePageLink;
+
+import java.sql.Time;
 
 public interface DashboardService {
     
@@ -38,7 +42,7 @@ public interface DashboardService {
 
     Dashboard assignDashboardToCustomer(DashboardId dashboardId, CustomerId customerId);
 
-    Dashboard unassignDashboardFromCustomer(DashboardId dashboardId);
+    Dashboard unassignDashboardFromCustomer(DashboardId dashboardId, CustomerId customerId);
 
     void deleteDashboard(DashboardId dashboardId);
 
@@ -46,8 +50,10 @@ public interface DashboardService {
 
     void deleteDashboardsByTenantId(TenantId tenantId);
 
-    TextPageData<DashboardInfo> findDashboardsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink);
+    ListenableFuture<TimePageData<DashboardInfo>> findDashboardsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TimePageLink pageLink);
 
     void unassignCustomerDashboards(TenantId tenantId, CustomerId customerId);
 
+    void updateCustomerDashboards(TenantId tenantId, CustomerId customerId, String customerTitle);
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java
index 53fdb73..b9fa3ab 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java
@@ -15,30 +15,42 @@
  */
 package org.thingsboard.server.dao.dashboard;
 
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
-import org.thingsboard.server.common.data.Customer;
-import org.thingsboard.server.common.data.Dashboard;
-import org.thingsboard.server.common.data.DashboardInfo;
-import org.thingsboard.server.common.data.Tenant;
+import org.thingsboard.server.common.data.*;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 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.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageData;
+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.customer.CustomerDao;
 import org.thingsboard.server.dao.entity.AbstractEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.model.ModelConstants;
+import org.thingsboard.server.dao.relation.RelationDao;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.service.PaginatedRemover;
+import org.thingsboard.server.dao.service.TimePaginatedRemover;
 import org.thingsboard.server.dao.service.Validator;
 import org.thingsboard.server.dao.tenant.TenantDao;
 
+import javax.annotation.Nullable;
+import java.sql.Time;
+import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
 
 import static org.thingsboard.server.dao.service.Validator.validateId;
 
@@ -59,7 +71,7 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     
     @Autowired
     private CustomerDao customerDao;
-    
+
     @Override
     public Dashboard findDashboardById(DashboardId dashboardId) {
         log.trace("Executing findDashboardById [{}]", dashboardId);
@@ -98,15 +110,59 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     @Override
     public Dashboard assignDashboardToCustomer(DashboardId dashboardId, CustomerId customerId) {
         Dashboard dashboard = findDashboardById(dashboardId);
-        dashboard.setCustomerId(customerId);
-        return saveDashboard(dashboard);
+        Customer customer = customerDao.findById(customerId.getId());
+        if (customer == null) {
+            throw new DataValidationException("Can't assign dashboard to non-existent customer!");
+        }
+        if (!customer.getTenantId().getId().equals(dashboard.getTenantId().getId())) {
+            throw new DataValidationException("Can't assign dashboard to customer from different tenant!");
+        }
+        if (dashboard.addAssignedCustomer(customerId, customer.getTitle())) {
+            try {
+                createRelation(new EntityRelation(customerId, dashboardId, EntityRelation.CONTAINS_TYPE, RelationTypeGroup.DASHBOARD));
+            } catch (ExecutionException | InterruptedException e) {
+                log.warn("[{}] Failed to create dashboard relation. Customer Id: [{}]", dashboardId, customerId);
+                throw new RuntimeException(e);
+            }
+            return saveDashboard(dashboard);
+        } else {
+            return dashboard;
+        }
     }
 
     @Override
-    public Dashboard unassignDashboardFromCustomer(DashboardId dashboardId) {
+    public Dashboard unassignDashboardFromCustomer(DashboardId dashboardId, CustomerId customerId) {
         Dashboard dashboard = findDashboardById(dashboardId);
-        dashboard.setCustomerId(null);
-        return saveDashboard(dashboard);
+        if (dashboard.removeAssignedCustomer(customerId)) {
+            try {
+                deleteRelation(new EntityRelation(customerId, dashboardId, EntityRelation.CONTAINS_TYPE, RelationTypeGroup.DASHBOARD));
+            } catch (ExecutionException | InterruptedException e) {
+                log.warn("[{}] Failed to delete dashboard relation. Customer Id: [{}]", dashboardId, customerId);
+                throw new RuntimeException(e);
+            }
+            return saveDashboard(dashboard);
+        } else {
+            return dashboard;
+        }
+    }
+
+    private Dashboard updateAssignedCustomerTitle(DashboardId dashboardId, CustomerId customerId, String customerTitle) {
+        Dashboard dashboard = findDashboardById(dashboardId);
+        if (dashboard.updateAssignedCustomer(customerId, customerTitle)) {
+            return saveDashboard(dashboard);
+        } else {
+            return dashboard;
+        }
+    }
+
+    private void deleteRelation(EntityRelation dashboardRelation) throws ExecutionException, InterruptedException {
+        log.debug("Deleting Dashboard relation: {}", dashboardRelation);
+        relationService.deleteRelationAsync(dashboardRelation).get();
+    }
+
+    private void createRelation(EntityRelation dashboardRelation) throws ExecutionException, InterruptedException {
+        log.debug("Creating Dashboard relation: {}", dashboardRelation);
+        relationService.saveRelationAsync(dashboardRelation).get();
     }
 
     @Override
@@ -134,13 +190,20 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
     }
 
     @Override
-    public TextPageData<DashboardInfo> findDashboardsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink) {
+    public ListenableFuture<TimePageData<DashboardInfo>> findDashboardsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TimePageLink pageLink) {
         log.trace("Executing findDashboardsByTenantIdAndCustomerId, tenantId [{}], customerId [{}], pageLink [{}]", tenantId, customerId, pageLink);
         Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         Validator.validateId(customerId, "Incorrect customerId " + customerId);
         Validator.validatePageLink(pageLink, "Incorrect page link " + pageLink);
-        List<DashboardInfo> dashboards = dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId.getId(), customerId.getId(), pageLink);
-        return new TextPageData<>(dashboards, pageLink);
+        ListenableFuture<List<DashboardInfo>> dashboards = dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId.getId(), customerId.getId(), pageLink);
+
+        return Futures.transform(dashboards, new Function<List<DashboardInfo>, TimePageData<DashboardInfo>>() {
+            @Nullable
+            @Override
+            public TimePageData<DashboardInfo> apply(@Nullable List<DashboardInfo> dashboards) {
+                return new TimePageData<>(dashboards, pageLink);
+            }
+        });
     }
 
     @Override
@@ -148,9 +211,18 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
         log.trace("Executing unassignCustomerDashboards, tenantId [{}], customerId [{}]", tenantId, customerId);
         Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         Validator.validateId(customerId, "Incorrect customerId " + customerId);
-        new CustomerDashboardsUnassigner(tenantId).removeEntities(customerId);
+        new CustomerDashboardsUnassigner(tenantId, customerId).removeEntities(customerId);
     }
-    
+
+    @Override
+    public void updateCustomerDashboards(TenantId tenantId, CustomerId customerId, String customerTitle) {
+        log.trace("Executing updateCustomerDashboards, tenantId [{}], customerId [{}], customerTitle [{}]", tenantId, customerId, customerTitle);
+        Validator.validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
+        Validator.validateId(customerId, "Incorrect customerId " + customerId);
+        Validator.validateString(customerTitle, "Incorrect customerTitle " + customerTitle);
+        new CustomerDashboardsUpdater(tenantId, customerId, customerTitle).removeEntities(customerId);
+    }
+
     private DataValidator<Dashboard> dashboardValidator =
             new DataValidator<Dashboard>() {
                 @Override
@@ -166,17 +238,6 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
                             throw new DataValidationException("Dashboard is referencing to non-existent tenant!");
                         }
                     }
-                    if (dashboard.getCustomerId() == null) {
-                        dashboard.setCustomerId(new CustomerId(ModelConstants.NULL_UUID));
-                    } else if (!dashboard.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
-                        Customer customer = customerDao.findById(dashboard.getCustomerId().getId());
-                        if (customer == null) {
-                            throw new DataValidationException("Can't assign dashboard to non-existent customer!");
-                        }
-                        if (!customer.getTenantId().getId().equals(dashboard.getTenantId().getId())) {
-                            throw new DataValidationException("Can't assign dashboard to customer from different tenant!");
-                        }
-                    }
                 }
     };
     
@@ -194,24 +255,60 @@ public class DashboardServiceImpl extends AbstractEntityService implements Dashb
         }
     };
     
-    private class CustomerDashboardsUnassigner extends PaginatedRemover<CustomerId, DashboardInfo> {
+    private class CustomerDashboardsUnassigner extends TimePaginatedRemover<CustomerId, DashboardInfo> {
         
         private TenantId tenantId;
+        private CustomerId customerId;
         
-        CustomerDashboardsUnassigner(TenantId tenantId) {
+        CustomerDashboardsUnassigner(TenantId tenantId, CustomerId customerId) {
             this.tenantId = tenantId;
+            this.customerId = customerId;
         }
 
         @Override
-        protected List<DashboardInfo> findEntities(CustomerId id, TextPageLink pageLink) {
-            return dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId.getId(), id.getId(), pageLink);
+        protected List<DashboardInfo> findEntities(CustomerId id, TimePageLink pageLink) {
+            try {
+                return dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId.getId(), id.getId(), pageLink).get();
+            } catch (InterruptedException | ExecutionException e) {
+                log.warn("Failed to get dashboards by tenantId [{}] and customerId [{}].", tenantId, id);
+                throw new RuntimeException(e);
+            }
         }
 
         @Override
         protected void removeEntity(DashboardInfo entity) {
-            unassignDashboardFromCustomer(new DashboardId(entity.getUuidId()));
+            unassignDashboardFromCustomer(new DashboardId(entity.getUuidId()), this.customerId);
         }
         
     }
 
+    private class CustomerDashboardsUpdater extends TimePaginatedRemover<CustomerId, DashboardInfo> {
+
+        private TenantId tenantId;
+        private CustomerId customerId;
+        private String customerTitle;
+
+        CustomerDashboardsUpdater(TenantId tenantId, CustomerId customerId, String customerTitle) {
+            this.tenantId = tenantId;
+            this.customerId = customerId;
+            this.customerTitle = customerTitle;
+        }
+
+        @Override
+        protected List<DashboardInfo> findEntities(CustomerId id, TimePageLink pageLink) {
+            try {
+                return dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId.getId(), id.getId(), pageLink).get();
+            } catch (InterruptedException | ExecutionException e) {
+                log.warn("Failed to get dashboards by tenantId [{}] and customerId [{}].", tenantId, id);
+                throw new RuntimeException(e);
+            }
+        }
+
+        @Override
+        protected void removeEntity(DashboardInfo entity) {
+            updateAssignedCustomerTitle(new DashboardId(entity.getUuidId()), this.customerId, this.customerTitle);
+        }
+
+    }
+
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java b/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java
index 66e03b0..c275ad0 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java
@@ -266,13 +266,11 @@ public class ModelConstants {
      */
     public static final String DASHBOARD_COLUMN_FAMILY_NAME = "dashboard";
     public static final String DASHBOARD_TENANT_ID_PROPERTY = TENANT_ID_PROPERTY;
-    public static final String DASHBOARD_CUSTOMER_ID_PROPERTY = CUSTOMER_ID_PROPERTY;
     public static final String DASHBOARD_TITLE_PROPERTY = TITLE_PROPERTY;
     public static final String DASHBOARD_CONFIGURATION_PROPERTY = "configuration";
+    public static final String DASHBOARD_ASSIGNED_CUSTOMERS_PROPERTY = "assigned_customers";
 
     public static final String DASHBOARD_BY_TENANT_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME = "dashboard_by_tenant_and_search_text";
-    public static final String DASHBOARD_BY_CUSTOMER_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME = "dashboard_by_customer_and_search_text";
-
 
     /**
      * Cassandra plugin metadata constants.
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardEntity.java b/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardEntity.java
index 047a8f2..8590c2a 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardEntity.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardEntity.java
@@ -19,16 +19,19 @@ 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.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
+import lombok.extern.slf4j.Slf4j;
 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.SearchTextEntity;
 import org.thingsboard.server.dao.model.type.JsonCodec;
 
+import java.util.HashMap;
 import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
@@ -36,8 +39,11 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = DASHBOARD_COLUMN_FAMILY_NAME)
 @EqualsAndHashCode
 @ToString
+@Slf4j
 public final class DashboardEntity implements SearchTextEntity<Dashboard> {
-    
+
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -46,16 +52,15 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
     @Column(name = DASHBOARD_TENANT_ID_PROPERTY)
     private UUID tenantId;
 
-    @PartitionKey(value = 2)
-    @Column(name = DASHBOARD_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
-
     @Column(name = DASHBOARD_TITLE_PROPERTY)
     private String title;
     
     @Column(name = SEARCH_TEXT_PROPERTY)
     private String searchText;
-    
+
+    @Column(name = DASHBOARD_ASSIGNED_CUSTOMERS_PROPERTY, codec = JsonCodec.class)
+    private JsonNode assignedCustomers;
+
     @Column(name = DASHBOARD_CONFIGURATION_PROPERTY, codec = JsonCodec.class)
     private JsonNode configuration;
 
@@ -70,10 +75,10 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
         if (dashboard.getTenantId() != null) {
             this.tenantId = dashboard.getTenantId().getId();
         }
-        if (dashboard.getCustomerId() != null) {
-            this.customerId = dashboard.getCustomerId().getId();
-        }
         this.title = dashboard.getTitle();
+        if (dashboard.getAssignedCustomers() != null) {
+            this.assignedCustomers = objectMapper.valueToTree(dashboard.getAssignedCustomers());
+        }
         this.configuration = dashboard.getConfiguration();
     }
     
@@ -93,14 +98,6 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
         this.tenantId = tenantId;
     }
 
-    public UUID getCustomerId() {
-        return customerId;
-    }
-
-    public void setCustomerId(UUID customerId) {
-        this.customerId = customerId;
-    }
-    
     public String getTitle() {
         return title;
     }
@@ -109,6 +106,14 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
         this.title = title;
     }
 
+    public JsonNode getAssignedCustomers() {
+        return assignedCustomers;
+    }
+
+    public void setAssignedCustomers(JsonNode assignedCustomers) {
+        this.assignedCustomers = assignedCustomers;
+    }
+
     public JsonNode getConfiguration() {
         return configuration;
     }
@@ -138,10 +143,14 @@ public final class DashboardEntity implements SearchTextEntity<Dashboard> {
         if (tenantId != null) {
             dashboard.setTenantId(new TenantId(tenantId));
         }
-        if (customerId != null) {
-            dashboard.setCustomerId(new CustomerId(customerId));
-        }
         dashboard.setTitle(title);
+        if (assignedCustomers != null) {
+            try {
+                dashboard.setAssignedCustomers(objectMapper.treeToValue(assignedCustomers, HashMap.class));
+            } catch (JsonProcessingException e) {
+                log.warn("Unable to parse assigned customers!", e);
+            }
+        }
         dashboard.setConfiguration(configuration);
         return dashboard;
     }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardInfoEntity.java b/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardInfoEntity.java
index a2a5280..609f3bb 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardInfoEntity.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/nosql/DashboardInfoEntity.java
@@ -19,14 +19,21 @@ 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.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
+import lombok.extern.slf4j.Slf4j;
 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 org.thingsboard.server.dao.model.type.JsonCodec;
 
+import java.util.HashMap;
+import java.util.Set;
 import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.*;
@@ -34,8 +41,11 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
 @Table(name = DASHBOARD_COLUMN_FAMILY_NAME)
 @EqualsAndHashCode
 @ToString
+@Slf4j
 public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
 
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
     @PartitionKey(value = 0)
     @Column(name = ID_PROPERTY)
     private UUID id;
@@ -44,16 +54,15 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
     @Column(name = DASHBOARD_TENANT_ID_PROPERTY)
     private UUID tenantId;
 
-    @PartitionKey(value = 2)
-    @Column(name = DASHBOARD_CUSTOMER_ID_PROPERTY)
-    private UUID customerId;
-
     @Column(name = DASHBOARD_TITLE_PROPERTY)
     private String title;
 
     @Column(name = SEARCH_TEXT_PROPERTY)
     private String searchText;
 
+    @Column(name = DASHBOARD_ASSIGNED_CUSTOMERS_PROPERTY, codec = JsonCodec.class)
+    private JsonNode assignedCustomers;
+
     public DashboardInfoEntity() {
         super();
     }
@@ -65,10 +74,10 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
         if (dashboardInfo.getTenantId() != null) {
             this.tenantId = dashboardInfo.getTenantId().getId();
         }
-        if (dashboardInfo.getCustomerId() != null) {
-            this.customerId = dashboardInfo.getCustomerId().getId();
-        }
         this.title = dashboardInfo.getTitle();
+        if (dashboardInfo.getAssignedCustomers() != null) {
+            this.assignedCustomers = objectMapper.valueToTree(dashboardInfo.getAssignedCustomers());
+        }
     }
 
     public UUID getId() {
@@ -87,14 +96,6 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
         this.tenantId = tenantId;
     }
 
-    public UUID getCustomerId() {
-        return customerId;
-    }
-
-    public void setCustomerId(UUID customerId) {
-        this.customerId = customerId;
-    }
-
     public String getTitle() {
         return title;
     }
@@ -103,6 +104,14 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
         this.title = title;
     }
 
+    public JsonNode getAssignedCustomers() {
+        return assignedCustomers;
+    }
+
+    public void setAssignedCustomers(JsonNode assignedCustomers) {
+        this.assignedCustomers = assignedCustomers;
+    }
+
     @Override
     public String getSearchTextSource() {
         return getTitle();
@@ -124,10 +133,14 @@ public class DashboardInfoEntity implements SearchTextEntity<DashboardInfo> {
         if (tenantId != null) {
             dashboardInfo.setTenantId(new TenantId(tenantId));
         }
-        if (customerId != null) {
-            dashboardInfo.setCustomerId(new CustomerId(customerId));
-        }
         dashboardInfo.setTitle(title);
+        if (assignedCustomers != null) {
+            try {
+                dashboardInfo.setAssignedCustomers(objectMapper.treeToValue(assignedCustomers, HashMap.class));
+            } catch (JsonProcessingException e) {
+                log.warn("Unable to parse assigned customers!", e);
+            }
+        }
         return dashboardInfo;
     }
 
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardEntity.java b/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardEntity.java
index bd0e0dc..6f7810b 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardEntity.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardEntity.java
@@ -16,9 +16,12 @@
 package org.thingsboard.server.dao.model.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
+import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
+import lombok.extern.slf4j.Slf4j;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
 import org.thingsboard.server.common.data.Dashboard;
@@ -33,20 +36,23 @@ import org.thingsboard.server.dao.util.mapping.JsonStringType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Set;
 
 @Data
+@Slf4j
 @EqualsAndHashCode(callSuper = true)
 @Entity
 @TypeDef(name = "json", typeClass = JsonStringType.class)
 @Table(name = ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME)
 public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements SearchTextEntity<Dashboard> {
 
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
     @Column(name = ModelConstants.DASHBOARD_TENANT_ID_PROPERTY)
     private String tenantId;
 
-    @Column(name = ModelConstants.DASHBOARD_CUSTOMER_ID_PROPERTY)
-    private String customerId;
-
     @Column(name = ModelConstants.DASHBOARD_TITLE_PROPERTY)
     private String title;
     
@@ -54,6 +60,10 @@ public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements S
     private String searchText;
 
     @Type(type = "json")
+    @Column(name = ModelConstants.DASHBOARD_ASSIGNED_CUSTOMERS_PROPERTY)
+    private JsonNode assignedCustomers;
+
+    @Type(type = "json")
     @Column(name = ModelConstants.DASHBOARD_CONFIGURATION_PROPERTY)
     private JsonNode configuration;
 
@@ -68,10 +78,10 @@ public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements S
         if (dashboard.getTenantId() != null) {
             this.tenantId = toString(dashboard.getTenantId().getId());
         }
-        if (dashboard.getCustomerId() != null) {
-            this.customerId = toString(dashboard.getCustomerId().getId());
-        }
         this.title = dashboard.getTitle();
+        if (dashboard.getAssignedCustomers() != null) {
+            this.assignedCustomers = objectMapper.valueToTree(dashboard.getAssignedCustomers());
+        }
         this.configuration = dashboard.getConfiguration();
     }
 
@@ -92,10 +102,14 @@ public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements S
         if (tenantId != null) {
             dashboard.setTenantId(new TenantId(toUUID(tenantId)));
         }
-        if (customerId != null) {
-            dashboard.setCustomerId(new CustomerId(toUUID(customerId)));
-        }
         dashboard.setTitle(title);
+        if (assignedCustomers != null) {
+            try {
+                dashboard.setAssignedCustomers(objectMapper.treeToValue(assignedCustomers, HashMap.class));
+            } catch (JsonProcessingException e) {
+                log.warn("Unable to parse assigned customers!", e);
+            }
+        }
         dashboard.setConfiguration(configuration);
         return dashboard;
     }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardInfoEntity.java b/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardInfoEntity.java
index c87e97d..d9b8efe 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardInfoEntity.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardInfoEntity.java
@@ -16,8 +16,13 @@
 package org.thingsboard.server.dao.model.sql;
 
 import com.datastax.driver.core.utils.UUIDs;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
+import lombok.extern.slf4j.Slf4j;
+import org.hibernate.annotations.Type;
 import org.thingsboard.server.common.data.DashboardInfo;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.DashboardId;
@@ -29,25 +34,31 @@ import org.thingsboard.server.dao.model.SearchTextEntity;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Table;
+import java.util.HashMap;
+import java.util.Set;
 
 @Data
+@Slf4j
 @EqualsAndHashCode(callSuper = true)
 @Entity
 @Table(name = ModelConstants.DASHBOARD_COLUMN_FAMILY_NAME)
 public class DashboardInfoEntity extends BaseSqlEntity<DashboardInfo> implements SearchTextEntity<DashboardInfo> {
 
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
     @Column(name = ModelConstants.DASHBOARD_TENANT_ID_PROPERTY)
     private String tenantId;
 
-    @Column(name = ModelConstants.DASHBOARD_CUSTOMER_ID_PROPERTY)
-    private String customerId;
-
     @Column(name = ModelConstants.DASHBOARD_TITLE_PROPERTY)
     private String title;
 
     @Column(name = ModelConstants.SEARCH_TEXT_PROPERTY)
     private String searchText;
 
+    @Type(type = "json")
+    @Column(name = ModelConstants.DASHBOARD_ASSIGNED_CUSTOMERS_PROPERTY)
+    private JsonNode assignedCustomers;
+
     public DashboardInfoEntity() {
         super();
     }
@@ -59,10 +70,10 @@ public class DashboardInfoEntity extends BaseSqlEntity<DashboardInfo> implements
         if (dashboardInfo.getTenantId() != null) {
             this.tenantId = toString(dashboardInfo.getTenantId().getId());
         }
-        if (dashboardInfo.getCustomerId() != null) {
-            this.customerId = toString(dashboardInfo.getCustomerId().getId());
-        }
         this.title = dashboardInfo.getTitle();
+        if (dashboardInfo.getAssignedCustomers() != null) {
+            this.assignedCustomers = objectMapper.valueToTree(dashboardInfo.getAssignedCustomers());
+        }
     }
 
     @Override
@@ -86,10 +97,14 @@ public class DashboardInfoEntity extends BaseSqlEntity<DashboardInfo> implements
         if (tenantId != null) {
             dashboardInfo.setTenantId(new TenantId(toUUID(tenantId)));
         }
-        if (customerId != null) {
-            dashboardInfo.setCustomerId(new CustomerId(toUUID(customerId)));
-        }
         dashboardInfo.setTitle(title);
+        if (assignedCustomers != null) {
+            try {
+                dashboardInfo.setAssignedCustomers(objectMapper.treeToValue(assignedCustomers, HashMap.class));
+            } catch (JsonProcessingException e) {
+                log.warn("Unable to parse assigned customers!", e);
+            }
+        }
         return dashboardInfo;
     }
 
diff --git a/dao/src/main/java/org/thingsboard/server/dao/service/TimePaginatedRemover.java b/dao/src/main/java/org/thingsboard/server/dao/service/TimePaginatedRemover.java
new file mode 100644
index 0000000..b52f747
--- /dev/null
+++ b/dao/src/main/java/org/thingsboard/server/dao/service/TimePaginatedRemover.java
@@ -0,0 +1,50 @@
+/**
+ * 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.service;
+
+import org.thingsboard.server.common.data.id.IdBased;
+import org.thingsboard.server.common.data.page.TimePageLink;
+
+import java.sql.Time;
+import java.util.List;
+import java.util.UUID;
+
+public abstract class TimePaginatedRemover<I, D extends IdBased<?>> {
+
+    private static final int DEFAULT_LIMIT = 100;
+
+    public void removeEntities(I id) {
+        TimePageLink pageLink = new TimePageLink(DEFAULT_LIMIT);
+        boolean hasNext = true;
+        while (hasNext) {
+            List<D> entities = findEntities(id, pageLink);
+            for (D entity : entities) {
+                removeEntity(entity);
+            }
+            hasNext = entities.size() == pageLink.getLimit();
+            if (hasNext) {
+                int index = entities.size() - 1;
+                UUID idOffset = entities.get(index).getUuidId();
+                pageLink.setIdOffset(idOffset);
+            }
+        }
+    }
+
+    protected abstract List<D> findEntities(I id, TimePageLink pageLink);
+
+    protected abstract void removeEntity(D entity);
+
+}
diff --git a/dao/src/main/java/org/thingsboard/server/dao/service/Validator.java b/dao/src/main/java/org/thingsboard/server/dao/service/Validator.java
index d8a511d..d962977 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/service/Validator.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/service/Validator.java
@@ -17,6 +17,7 @@ package org.thingsboard.server.dao.service;
 
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.UUIDBased;
+import org.thingsboard.server.common.data.page.BasePageLink;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
 
@@ -116,7 +117,7 @@ public class Validator {
      * @param pageLink     the page link
      * @param errorMessage the error message for exception
      */
-    public static void validatePageLink(TextPageLink pageLink, String errorMessage) {
+    public static void validatePageLink(BasePageLink pageLink, String errorMessage) {
         if (pageLink == null || pageLink.getLimit() < 1 || (pageLink.getIdOffset() != null && pageLink.getIdOffset().version() != 1)) {
             throw new IncorrectParameterException(errorMessage);
         }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardInfoRepository.java b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardInfoRepository.java
index 7f0ec7a..ef7d0a0 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardInfoRepository.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardInfoRepository.java
@@ -39,12 +39,4 @@ public interface DashboardInfoRepository extends CrudRepository<DashboardInfoEnt
                                              @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") String tenantId,
-                                                          @Param("customerId") String customerId,
-                                                          @Param("searchText") String searchText,
-                                                          @Param("idOffset") String idOffset,
-                                                          Pageable pageable);
 }
diff --git a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDao.java b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDao.java
index 204189a..1e343a4 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDao.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDao.java
@@ -15,19 +15,31 @@
  */
 package org.thingsboard.server.dao.sql.dashboard;
 
+import com.google.common.util.concurrent.AsyncFunction;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
 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.DashboardInfo;
+import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.UUIDConverter;
+import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.page.TextPageLink;
+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.DaoUtil;
 import org.thingsboard.server.dao.dashboard.DashboardInfoDao;
 import org.thingsboard.server.dao.model.sql.DashboardInfoEntity;
+import org.thingsboard.server.dao.relation.RelationDao;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
 import org.thingsboard.server.dao.util.SqlDao;
 
+import java.sql.Time;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 import java.util.UUID;
@@ -37,11 +49,15 @@ import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
+@Slf4j
 @Component
 @SqlDao
 public class JpaDashboardInfoDao extends JpaAbstractSearchTextDao<DashboardInfoEntity, DashboardInfo> implements DashboardInfoDao {
 
     @Autowired
+    private RelationDao relationDao;
+
+    @Autowired
     private DashboardInfoRepository dashboardInfoRepository;
 
     @Override
@@ -65,13 +81,17 @@ public class JpaDashboardInfoDao extends JpaAbstractSearchTextDao<DashboardInfoE
     }
 
     @Override
-    public List<DashboardInfo> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
-        return DaoUtil.convertDataList(dashboardInfoRepository
-                .findByTenantIdAndCustomerId(
-                        UUIDConverter.fromTimeUUID(tenantId),
-                        UUIDConverter.fromTimeUUID(customerId),
-                        Objects.toString(pageLink.getTextSearch(), ""),
-                        pageLink.getIdOffset() == null ? NULL_UUID_STR : UUIDConverter.fromTimeUUID(pageLink.getIdOffset()),
-                        new PageRequest(0, pageLink.getLimit())));
+    public ListenableFuture<List<DashboardInfo>> findDashboardsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TimePageLink pageLink) {
+        log.debug("Try to find dashboards by tenantId [{}], customerId[{}] and pageLink [{}]", tenantId, customerId, pageLink);
+
+        ListenableFuture<List<EntityRelation>> relations = relationDao.findRelations(new CustomerId(customerId), EntityRelation.CONTAINS_TYPE, RelationTypeGroup.DASHBOARD, EntityType.DASHBOARD, pageLink);
+
+        return Futures.transform(relations, (AsyncFunction<List<EntityRelation>, List<DashboardInfo>>) input -> {
+            List<ListenableFuture<DashboardInfo>> dashboardFutures = new ArrayList<>(input.size());
+            for (EntityRelation relation : input) {
+                dashboardFutures.add(findByIdAsync(relation.getTo().getId()));
+            }
+            return Futures.successfulAsList(dashboardFutures);
+        });
     }
 }
diff --git a/dao/src/main/resources/cassandra/schema.cql b/dao/src/main/resources/cassandra/schema.cql
index bc7884d..dc83045 100644
--- a/dao/src/main/resources/cassandra/schema.cql
+++ b/dao/src/main/resources/cassandra/schema.cql
@@ -364,26 +364,19 @@ CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.widget_type_by_tenant_and_ali
 CREATE TABLE IF NOT EXISTS thingsboard.dashboard (
 	id timeuuid,
 	tenant_id timeuuid,
-	customer_id timeuuid,
 	title text,
 	search_text text,
+	assigned_customers text,
 	configuration text,
-	PRIMARY KEY (id, tenant_id, customer_id)
+	PRIMARY KEY (id, tenant_id)
 );
 
 CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.dashboard_by_tenant_and_search_text AS
 	SELECT *
 	from thingsboard.dashboard
-	WHERE tenant_id IS NOT NULL AND customer_id IS NOT NULL AND search_text IS NOT NULL AND id IS NOT NULL
-	PRIMARY KEY ( tenant_id, search_text, id, customer_id )
-	WITH CLUSTERING ORDER BY ( search_text ASC, id DESC, customer_id DESC );
-
-CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.dashboard_by_customer_and_search_text AS
-	SELECT *
-	from thingsboard.dashboard
-	WHERE tenant_id IS NOT NULL AND customer_id IS NOT NULL AND search_text IS NOT NULL AND id IS NOT NULL
-	PRIMARY KEY ( customer_id, tenant_id, search_text, id )
-	WITH CLUSTERING ORDER BY ( tenant_id DESC, search_text ASC, id DESC );
+	WHERE tenant_id IS NOT NULL AND search_text IS NOT NULL AND id IS NOT NULL
+	PRIMARY KEY ( tenant_id, search_text, id )
+	WITH CLUSTERING ORDER BY ( search_text ASC, id DESC );
 
 CREATE TABLE IF NOT EXISTS thingsboard.ts_kv_cf (
     entity_type text, // (DEVICE, CUSTOMER, TENANT)
diff --git a/dao/src/main/resources/sql/schema.sql b/dao/src/main/resources/sql/schema.sql
index 1f739f8..53ec223 100644
--- a/dao/src/main/resources/sql/schema.sql
+++ b/dao/src/main/resources/sql/schema.sql
@@ -105,7 +105,7 @@ CREATE TABLE IF NOT EXISTS customer (
 CREATE TABLE IF NOT EXISTS dashboard (
     id varchar(31) NOT NULL CONSTRAINT dashboard_pkey PRIMARY KEY,
     configuration varchar(10000000),
-    customer_id varchar(31),
+    assigned_customers varchar(1000000),
     search_text varchar(255),
     tenant_id varchar(31),
     title varchar(255)
diff --git a/dao/src/test/java/org/thingsboard/server/dao/service/BaseDashboardServiceTest.java b/dao/src/test/java/org/thingsboard/server/dao/service/BaseDashboardServiceTest.java
index f0ed0b3..0427fb4 100644
--- a/dao/src/test/java/org/thingsboard/server/dao/service/BaseDashboardServiceTest.java
+++ b/dao/src/test/java/org/thingsboard/server/dao/service/BaseDashboardServiceTest.java
@@ -29,13 +29,17 @@ import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageData;
+import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.model.ModelConstants;
 
 import java.io.IOException;
+import java.sql.Time;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.ExecutionException;
 
 public abstract class BaseDashboardServiceTest extends AbstractServiceTest {
     
@@ -68,8 +72,6 @@ public abstract class BaseDashboardServiceTest extends AbstractServiceTest {
         Assert.assertNotNull(savedDashboard.getId());
         Assert.assertTrue(savedDashboard.getCreatedTime() > 0);
         Assert.assertEquals(dashboard.getTenantId(), savedDashboard.getTenantId());
-        Assert.assertNotNull(savedDashboard.getCustomerId());
-        Assert.assertEquals(ModelConstants.NULL_UUID, savedDashboard.getCustomerId().getId());
         Assert.assertEquals(dashboard.getTitle(), savedDashboard.getTitle());
         
         savedDashboard.setTitle("My new dashboard");
@@ -280,7 +282,7 @@ public abstract class BaseDashboardServiceTest extends AbstractServiceTest {
     }
     
     @Test
-    public void testFindDashboardsByTenantIdAndCustomerId() {
+    public void testFindDashboardsByTenantIdAndCustomerId() throws ExecutionException, InterruptedException {
         Tenant tenant = new Tenant();
         tenant.setTitle("Test tenant");
         tenant = tenantService.saveTenant(tenant);
@@ -303,10 +305,10 @@ public abstract class BaseDashboardServiceTest extends AbstractServiceTest {
         }
         
         List<DashboardInfo> loadedDashboards = new ArrayList<>();
-        TextPageLink pageLink = new TextPageLink(23);
-        TextPageData<DashboardInfo> pageData = null;
+        TimePageLink pageLink = new TimePageLink(23);
+        TimePageData<DashboardInfo> pageData = null;
         do {
-            pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink);
+            pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink).get();
             loadedDashboards.addAll(pageData.getData());
             if (pageData.hasNext()) {
                 pageLink = pageData.getNextPageLink();
@@ -320,96 +322,12 @@ public abstract class BaseDashboardServiceTest extends AbstractServiceTest {
         
         dashboardService.unassignCustomerDashboards(tenantId, customerId);
 
-        pageLink = new TextPageLink(42);
-        pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink);
+        pageLink = new TimePageLink(42);
+        pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink).get();
         Assert.assertFalse(pageData.hasNext());
         Assert.assertTrue(pageData.getData().isEmpty());
         
         tenantService.deleteTenant(tenantId);
     }
-    
-    @Test
-    public void testFindDashboardsByTenantIdCustomerIdAndTitle() {
-        
-        Customer customer = new Customer();
-        customer.setTitle("Test customer");
-        customer.setTenantId(tenantId);
-        customer = customerService.saveCustomer(customer);
-        CustomerId customerId = customer.getId();
-        
-        String title1 = "Dashboard title 1";
-        List<DashboardInfo> dashboardsTitle1 = new ArrayList<>();
-        for (int i=0;i<124;i++) {
-            Dashboard dashboard = new Dashboard();
-            dashboard.setTenantId(tenantId);
-            String suffix = RandomStringUtils.randomAlphanumeric((int)(Math.random()*15));
-            String title = title1+suffix;
-            title = i % 2 == 0 ? title.toLowerCase() : title.toUpperCase();
-            dashboard.setTitle(title);
-            dashboard = dashboardService.saveDashboard(dashboard);
-            dashboardsTitle1.add(new DashboardInfo(dashboardService.assignDashboardToCustomer(dashboard.getId(), customerId)));
-        }
-        String title2 = "Dashboard title 2";
-        List<DashboardInfo> dashboardsTitle2 = new ArrayList<>();
-        for (int i=0;i<151;i++) {
-            Dashboard dashboard = new Dashboard();
-            dashboard.setTenantId(tenantId);
-            String suffix = RandomStringUtils.randomAlphanumeric((int)(Math.random()*15));
-            String title = title2+suffix;
-            title = i % 2 == 0 ? title.toLowerCase() : title.toUpperCase();
-            dashboard.setTitle(title);
-            dashboard = dashboardService.saveDashboard(dashboard);
-            dashboardsTitle2.add(new DashboardInfo(dashboardService.assignDashboardToCustomer(dashboard.getId(), customerId)));
-        }
-        
-        List<DashboardInfo> loadedDashboardsTitle1 = new ArrayList<>();
-        TextPageLink pageLink = new TextPageLink(24, title1);
-        TextPageData<DashboardInfo> pageData = null;
-        do {
-            pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink);
-            loadedDashboardsTitle1.addAll(pageData.getData());
-            if (pageData.hasNext()) {
-                pageLink = pageData.getNextPageLink();
-            }
-        } while (pageData.hasNext());
-        
-        Collections.sort(dashboardsTitle1, idComparator);
-        Collections.sort(loadedDashboardsTitle1, idComparator);
-        
-        Assert.assertEquals(dashboardsTitle1, loadedDashboardsTitle1);
-        
-        List<DashboardInfo> loadedDashboardsTitle2 = new ArrayList<>();
-        pageLink = new TextPageLink(4, title2);
-        do {
-            pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink);
-            loadedDashboardsTitle2.addAll(pageData.getData());
-            if (pageData.hasNext()) {
-                pageLink = pageData.getNextPageLink();
-            }
-        } while (pageData.hasNext());
 
-        Collections.sort(dashboardsTitle2, idComparator);
-        Collections.sort(loadedDashboardsTitle2, idComparator);
-        
-        Assert.assertEquals(dashboardsTitle2, loadedDashboardsTitle2);
-
-        for (DashboardInfo dashboard : loadedDashboardsTitle1) {
-            dashboardService.deleteDashboard(dashboard.getId());
-        }
-        
-        pageLink = new TextPageLink(4, title1);
-        pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink);
-        Assert.assertFalse(pageData.hasNext());
-        Assert.assertEquals(0, pageData.getData().size());
-        
-        for (DashboardInfo dashboard : loadedDashboardsTitle2) {
-            dashboardService.deleteDashboard(dashboard.getId());
-        }
-        
-        pageLink = new TextPageLink(4, title2);
-        pageData = dashboardService.findDashboardsByTenantIdAndCustomerId(tenantId, customerId, pageLink);
-        Assert.assertFalse(pageData.hasNext());
-        Assert.assertEquals(0, pageData.getData().size());
-        customerService.deleteCustomer(customerId);
-    }
 }
diff --git a/dao/src/test/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDaoTest.java b/dao/src/test/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDaoTest.java
index 39bb084..3648cce 100644
--- a/dao/src/test/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDaoTest.java
+++ b/dao/src/test/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardInfoDaoTest.java
@@ -16,6 +16,7 @@
 package org.thingsboard.server.dao.sql.dashboard;
 
 import com.datastax.driver.core.utils.UUIDs;
+import org.junit.Assert;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.thingsboard.server.common.data.DashboardInfo;
@@ -40,53 +41,26 @@ public class JpaDashboardInfoDaoTest extends AbstractJpaDaoTest {
     @Test
     public void testFindDashboardsByTenantId() {
         UUID tenantId1 = UUIDs.timeBased();
-        UUID customerId1 = UUIDs.timeBased();
         UUID tenantId2 = UUIDs.timeBased();
-        UUID customerId2 = UUIDs.timeBased();
 
         for (int i = 0; i < 20; i++) {
-            createDashboard(tenantId1, customerId1, i);
-            createDashboard(tenantId2, customerId2, i * 2);
+            createDashboard(tenantId1, i);
+            createDashboard(tenantId2, i * 2);
         }
 
         TextPageLink pageLink1 = new TextPageLink(15, "DASHBOARD");
         List<DashboardInfo> dashboardInfos1 = dashboardInfoDao.findDashboardsByTenantId(tenantId1, pageLink1);
-        assertEquals(15, dashboardInfos1.size());
+        Assert.assertEquals(15, dashboardInfos1.size());
 
         TextPageLink pageLink2 = new TextPageLink(15, "DASHBOARD", dashboardInfos1.get(14).getId().getId(), null);
         List<DashboardInfo> dashboardInfos2 = dashboardInfoDao.findDashboardsByTenantId(tenantId1, pageLink2);
-        assertEquals(5, dashboardInfos2.size());
+        Assert.assertEquals(5, dashboardInfos2.size());
     }
 
-    @Test
-    public void testFindDashboardsByTenantAndCustomerId() {
-        UUID tenantId1 = UUIDs.timeBased();
-        UUID customerId1 = UUIDs.timeBased();
-        UUID tenantId2 = UUIDs.timeBased();
-        UUID customerId2 = UUIDs.timeBased();
-
-        for (int i = 0; i < 20; i++) {
-            createDashboard(tenantId1, customerId1, i);
-            createDashboard(tenantId2, customerId2, i * 2);
-        }
-
-        TextPageLink pageLink1 = new TextPageLink(15, "DASHBOARD");
-        List<DashboardInfo> dashboardInfos1 = dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId1, customerId1, pageLink1);
-        assertEquals(15, dashboardInfos1.size());
-
-        TextPageLink pageLink2 = new TextPageLink(15, "DASHBOARD", dashboardInfos1.get(14).getId().getId(), null);
-        List<DashboardInfo> dashboardInfos2 = dashboardInfoDao.findDashboardsByTenantIdAndCustomerId(tenantId1, customerId1, pageLink2);
-        assertEquals(5, dashboardInfos2.size());
-    }
-
-    private void assertEquals(int i, int size) {
-    }
-
-    private void createDashboard(UUID tenantId, UUID customerId, int index) {
+    private void createDashboard(UUID tenantId, int index) {
         DashboardInfo dashboardInfo = new DashboardInfo();
         dashboardInfo.setId(new DashboardId(UUIDs.timeBased()));
         dashboardInfo.setTenantId(new TenantId(tenantId));
-        dashboardInfo.setCustomerId(new CustomerId(customerId));
         dashboardInfo.setTitle("DASHBOARD_" + index);
         dashboardInfoDao.save(dashboardInfo);
     }