Refactor group management

components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/group/mgt/DeviceGroup.java

@@ -1,20 +1,19 @@
 /*
- *   Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
  *
- *   WSO2 Inc. licenses this file to you under the Apache License,
+ * WSO2 Inc. licenses this file to you under the Apache License,
- *   Version 2.0 (the "License"); you may not use this file except
+ * Version 2.0 (the "License"); you may not use this file except
- *   in compliance with the License.
+ * in compliance with the License.
- *   You may obtain a copy of the License at
+ * You may obtain a copy of the License at
  *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ * 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.
  *
+ * 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.wso2.carbon.device.mgt.common.group.mgt;
 
@@ -29,7 +28,6 @@ import java.util.List;
 @XmlRootElement
 public class DeviceGroup implements Serializable {
 
-    private int id;
     private String description;
     private String name;
     private Long dateOfCreation;
@@ -38,15 +36,6 @@ public class DeviceGroup implements Serializable {
     private List<GroupUser> users;
     private List<String> roles;
 
-    @XmlElement
-    public int getId() {
-        return id;
-    }
-
-    protected void setId(int id) {
-        this.id = id;
-    }
-
     @XmlElement
     public String getDescription() {
         return description;

components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/group/mgt/GroupAlreadyEixistException.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ * WSO2 Inc. licenses this file to you 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.wso2.carbon.device.mgt.common.group.mgt;
+
+/**
+ * This class represents a custom exception specified for group management
+ */
+public class GroupAlreadyEixistException extends Exception {
+
+    private static final long serialVersionUID = -312678379574816874L;
+    private String errorMessage;
+
+    public GroupAlreadyEixistException(String msg, Exception nestedEx) {
+        super(msg, nestedEx);
+        setErrorMessage(msg);
+    }
+
+    public GroupAlreadyEixistException(String message, Throwable cause) {
+        super(message, cause);
+        setErrorMessage(message);
+    }
+
+    public GroupAlreadyEixistException(String msg) {
+        super(msg);
+        setErrorMessage(msg);
+    }
+
+    public GroupAlreadyEixistException() {
+        super();
+    }
+
+    public GroupAlreadyEixistException(Throwable cause) {
+        super(cause);
+    }
+
+    public String getErrorMessage() {
+        return errorMessage;
+    }
+
+    public void setErrorMessage(String errorMessage) {
+        this.errorMessage = errorMessage;
+    }
+
+}

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/group/mgt/DeviceGroupBuilder.java

@@ -28,13 +28,14 @@ import java.util.List;
  */
 public class DeviceGroupBuilder extends DeviceGroup {
 
+    private int groupId;
+
     /**
      * Set device group to be decorated with the builder
      *
      * @param deviceGroup to decorate
      */
     public DeviceGroupBuilder(DeviceGroup deviceGroup) {
-        this.setId(deviceGroup.getId());
         this.setDescription(deviceGroup.getDescription());
         this.setName(deviceGroup.getName());
         this.setDateOfCreation(deviceGroup.getDateOfCreation());
@@ -44,11 +45,6 @@ public class DeviceGroupBuilder extends DeviceGroup {
         this.setRoles(deviceGroup.getRoles());
     }
 
-    @Override
-    public void setId(int id) {
-        super.setId(id);
-    }
-
     @Override
     public void setUsers(List<GroupUser> users) {
         super.setUsers(users);
@@ -64,4 +60,11 @@ public class DeviceGroupBuilder extends DeviceGroup {
         return super.getGroup();
     }
 
+    public int getGroupId() {
+        return groupId;
+    }
+
+    public void setGroupId(int groupId) {
+        this.groupId = groupId;
+    }
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/group/mgt/dao/GroupDAO.java

@@ -19,7 +19,6 @@
 package org.wso2.carbon.device.mgt.core.group.mgt.dao;
 
 import org.wso2.carbon.device.mgt.common.Device;
-import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
 import org.wso2.carbon.device.mgt.core.group.mgt.DeviceGroupBuilder;
 
@@ -42,37 +41,55 @@ public interface GroupDAO {
     /**
      * Update an existing Device Group.
      *
-     * @param deviceGroup group to update.
+     * @param deviceGroup   group to update.
+     * @param oldGroupName  of the group.
+     * @param tenantId      of the group.
      * @throws GroupManagementDAOException
      */
-    void updateGroup(DeviceGroup deviceGroup, int tenantId) throws GroupManagementDAOException;
+    void updateGroup(DeviceGroup deviceGroup, String oldGroupName, int tenantId) throws GroupManagementDAOException;
 
     /**
      * Delete an existing Device Group.
      *
-     * @param groupId to be deleted.
+     * @param groupName to be deleted.
+     * @param owner     of the group.
+     * @param tenantId  of the group.
      * @throws GroupManagementDAOException
      */
-    void deleteGroup(int groupId, int tenantId) throws GroupManagementDAOException;
+    void deleteGroup(String groupName, String owner, int tenantId) throws GroupManagementDAOException;
 
     /**
      * Get device group by id.
      *
      * @param groupId of Device Group.
+     * @param tenantId  of the group.
      * @return Device Group in tenant with specified name.
      * @throws GroupManagementDAOException
      */
     DeviceGroupBuilder getGroup(int groupId, int tenantId) throws GroupManagementDAOException;
 
+
+    /**
+     * Get device group by name.
+     *
+     * @param groupName of Device Group.
+     * @param owner of the group.
+     * @param tenantId  of the group.
+     * @return Device Group in tenant with specified name.
+     * @throws GroupManagementDAOException
+     */
+    DeviceGroupBuilder getGroup(String groupName, String owner, int tenantId) throws GroupManagementDAOException;
+
     /**
      * Get the list of Device Groups in tenant.
      *
-     * @param request for pagination.
+     * @param startIndex for pagination.
+     * @param rowCount for pagination.
      * @param tenantId of user's tenant.
      * @return List of all Device Groups in tenant.
      * @throws GroupManagementDAOException
      */
-    List<DeviceGroupBuilder> getGroups(PaginationRequest request, int tenantId) throws GroupManagementDAOException;
+    List<DeviceGroupBuilder> getGroups(int startIndex, int rowCount, int tenantId) throws GroupManagementDAOException;
 
 
     /**
@@ -98,70 +115,81 @@ public interface GroupDAO {
      * Check group already existed with given name.
      *
      * @param groupName of the Device Group.
+     * @param owner of the Device Group.
      * @param tenantId of user's tenant.
      * @return existence of group with name
      * @throws GroupManagementDAOException
      */
-    boolean isGroupExist(String groupName, int tenantId) throws GroupManagementDAOException;
+    boolean isGroupExist(String groupName, String owner, int tenantId) throws GroupManagementDAOException;
 
     /**
      * Add device to a given Device Group.
      *
-     * @param groupId of the Device Group.
+     * @param groupName of the Device Group.
+     * @param owner of the Device Group.
      * @param deviceId of the device.
      * @param tenantId of user's tenant.
      * @throws GroupManagementDAOException
      */
-    void addDevice(int groupId, int deviceId, int tenantId) throws GroupManagementDAOException;
+    void addDevice(String groupName, String owner, int deviceId, int tenantId) throws GroupManagementDAOException;
 
     /**
      * Remove device from the Device Group.
      *
-     * @param groupId of the Device Group.
+     * @param groupName of the Device Group.
+     * @param owner of the Device Group.
      * @param deviceId of the device.
      * @param tenantId of user's tenant.
      * @throws GroupManagementDAOException
      */
-    void removeDevice(int groupId, int deviceId, int tenantId) throws GroupManagementDAOException;
+    void removeDevice(String groupName, String owner, int deviceId, int tenantId) throws GroupManagementDAOException;
 
     /**
      * Check device is belonging to a Device Group.
      *
-     * @param groupId of the Device Group.
+     * @param groupName of the Device Group.
+     * @param owner of the Device Group.
      * @param deviceId of the device.
      * @param tenantId of user's tenant.
      * @throws GroupManagementDAOException
      */
-    boolean isDeviceMappedToGroup(int groupId, int deviceId, int tenantId) throws GroupManagementDAOException;
+    boolean isDeviceMappedToGroup(String groupName, String owner, int deviceId, int tenantId)
+            throws GroupManagementDAOException;
 
     /**
      * Get count of devices in a Device Group.
      *
-     * @param groupId of the Device Group.
+     * @param groupName of the Device Group.
+     * @param owner of the Device Group.
      * @param tenantId of user's tenant.
      * @return device count.
      * @throws GroupManagementDAOException
      */
-    int getDeviceCount(int groupId, int tenantId) throws GroupManagementDAOException;
+    int getDeviceCount(String groupName, String owner, int tenantId) throws GroupManagementDAOException;
 
     /**
      * Get all devices of a given tenant and device group.
      *
-     * @param groupId of the group.
+     * @param groupName of the group.
+     * @param owner of the Device Group.
      * @param tenantId of user's tenant.
      * @return list of device in group
      * @throws GroupManagementDAOException
      */
-    List<Device> getDevices(int groupId, int tenantId) throws GroupManagementDAOException;
+    List<Device> getDevices(String groupName, String owner, int tenantId) throws GroupManagementDAOException;
 
     /**
-     * Get all devices of a given tenant and device group.
+     * Get paginated result of devices of a given tenant and device group.
      *
-     * @param groupId of the group.
+     * @param groupName of the group.
-     * @param request for pagination.
+     * @param owner of the Device Group.
+     * @param startIndex for pagination.
+     * @param rowCount for pagination.
      * @param tenantId of user's tenant.
      * @return list of device in group
      * @throws GroupManagementDAOException
      */
-    List<Device> getDevices(int groupId, PaginationRequest request, int tenantId) throws GroupManagementDAOException;
+    List<Device> getDevices(String groupName, String owner, int startIndex, int rowCount, int tenantId)
+            throws GroupManagementDAOException;
+
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/group/mgt/dao/GroupDAOImpl.java

@@ -19,7 +19,6 @@
 package org.wso2.carbon.device.mgt.core.group.mgt.dao;
 
 import org.wso2.carbon.device.mgt.common.Device;
-import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
 import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
 import org.wso2.carbon.device.mgt.core.group.mgt.DeviceGroupBuilder;
@@ -68,18 +67,19 @@ public class GroupDAOImpl implements GroupDAO {
     }
 
     @Override
-    public void updateGroup(DeviceGroup deviceGroup, int tenantId) throws GroupManagementDAOException {
+    public void updateGroup(DeviceGroup deviceGroup, String oldGroupName, int tenantId)
+            throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql = "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, DATE_OF_LAST_UPDATE = ?, OWNER = ? "
-                         + "WHERE ID = ? AND TENANT_ID = ?";
+                         + "WHERE GROUP_NAME = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, deviceGroup.getDescription());
             stmt.setString(2, deviceGroup.getName());
             stmt.setLong(3, deviceGroup.getDateOfLastUpdate());
             stmt.setString(4, deviceGroup.getOwner());
-            stmt.setInt(5, deviceGroup.getId());
+            stmt.setString(5, oldGroupName);
             stmt.setInt(6, tenantId);
             stmt.executeUpdate();
         } catch (SQLException e) {
@@ -91,31 +91,35 @@ public class GroupDAOImpl implements GroupDAO {
     }
 
     @Override
-    public void deleteGroup(int groupId, int tenantId) throws GroupManagementDAOException {
+    public void deleteGroup(String groupName, String owner, int tenantId) throws GroupManagementDAOException {
         Connection conn;
         PreparedStatement stmt = null;
         try {
             conn = GroupManagementDAOFactory.getConnection();
-            String sql = "DELETE FROM DM_DEVICE_GROUP_MAP WHERE GROUP_ID = ? AND TENANT_ID = ?";
+            String sql = "DELETE FROM DM_DEVICE_GROUP_MAP WHERE GROUP_ID = (SELECT ID AS GROUP_ID FROM DM_GROUP WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?) AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
-            stmt.setInt(1, groupId);
+            stmt.setString(1, groupName);
-            stmt.setInt(2, tenantId);
+            stmt.setString(2, owner);
+            stmt.setInt(3, tenantId);
+            stmt.setInt(4, tenantId);
             stmt.executeUpdate();
         } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while removing mappings for group '" + groupId + "'", e);
+            throw new GroupManagementDAOException("Error occurred while removing mappings for group '" + groupName +
+                                                  "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, null);
         }
 
         try {
             conn = GroupManagementDAOFactory.getConnection();
-            String sql = "DELETE FROM DM_GROUP WHERE ID = ? AND TENANT_ID = ?";
+            String sql = "DELETE FROM DM_GROUP WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
-            stmt.setInt(1, groupId);
+            stmt.setString(1, groupName);
-            stmt.setInt(2, tenantId);
+            stmt.setString(2, owner);
+            stmt.setInt(3, tenantId);
             stmt.executeUpdate();
         } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while deleting group '" + groupId + "'", e);
+            throw new GroupManagementDAOException("Error occurred while deleting group '" + groupName + "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, null);
         }
@@ -140,14 +144,41 @@ public class GroupDAOImpl implements GroupDAO {
             }
         } catch (SQLException e) {
             throw new GroupManagementDAOException("Error occurred while obtaining information of Device Group '" +
-                    groupId + "'", e);
+                                                  groupId + "'", e);
+        } finally {
+            GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
+        }
+    }
+
+    @Override
+    public DeviceGroupBuilder getGroup(String groupName, String owner, int tenantId)
+            throws GroupManagementDAOException {
+        PreparedStatement stmt = null;
+        ResultSet resultSet = null;
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, DATE_OF_CREATE, DATE_OF_LAST_UPDATE, OWNER "
+                         + "FROM DM_GROUP WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?";
+            stmt = conn.prepareStatement(sql);
+            stmt.setString(1, groupName);
+            stmt.setString(2, owner);
+            stmt.setInt(3, tenantId);
+            resultSet = stmt.executeQuery();
+            if (resultSet.next()) {
+                return GroupManagementDAOUtil.loadGroup(resultSet);
+            } else {
+                return null;
+            }
+        } catch (SQLException e) {
+            throw new GroupManagementDAOException("Error occurred while obtaining information of Device Group '" +
+                                                  groupName + "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
         }
     }
 
     @Override
-    public List<DeviceGroupBuilder> getGroups(PaginationRequest request, int tenantId)
+    public List<DeviceGroupBuilder> getGroups(int startIndex, int rowCount, int tenantId)
             throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
@@ -159,9 +190,9 @@ public class GroupDAOImpl implements GroupDAO {
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, tenantId);
             //noinspection JpaQueryApiInspection
-            stmt.setInt(2, request.getStartIndex());
+            stmt.setInt(2, startIndex);
             //noinspection JpaQueryApiInspection
-            stmt.setInt(3, request.getRowCount());
+            stmt.setInt(3, rowCount);
             resultSet = stmt.executeQuery();
             deviceGroupList = new ArrayList<>();
             while (resultSet.next()) {
@@ -181,12 +212,12 @@ public class GroupDAOImpl implements GroupDAO {
         ResultSet resultSet = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT COUNT(ID) AS DEVICE_COUNT FROM DM_DEVICE_GROUP_MAP WHERE TENANT_ID = ?";
+            String sql = "SELECT COUNT(ID) AS GROUP_COUNT FROM DM_GROUP WHERE TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, tenantId);
             resultSet = stmt.executeQuery();
             if (resultSet.next()) {
-                return resultSet.getInt("DEVICE_COUNT");
+                return resultSet.getInt("GROUP_COUNT");
             } else {
                 return 0;
             }
@@ -205,7 +236,7 @@ public class GroupDAOImpl implements GroupDAO {
         List<DeviceGroupBuilder> deviceGroups = new ArrayList<>();
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, DATE_OF_CREATE, DATE_OF_LAST_UPDATE, OWNER "
+            String sql = "SELECT DESCRIPTION, GROUP_NAME, DATE_OF_CREATE, DATE_OF_LAST_UPDATE, OWNER "
                          + "FROM DM_GROUP WHERE GROUP_NAME LIKE ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, "%" + groupName + "%");
@@ -224,15 +255,16 @@ public class GroupDAOImpl implements GroupDAO {
     }
 
     @Override
-    public boolean isGroupExist(String groupName, int tenantId) throws GroupManagementDAOException {
+    public boolean isGroupExist(String groupName, String owner, int tenantId) throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID FROM DM_GROUP WHERE GROUP_NAME = ? AND TENANT_ID = ?";
+            String sql = "SELECT GROUP_NAME FROM DM_GROUP WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, groupName);
-            stmt.setInt(2, tenantId);
+            stmt.setString(2, owner);
+            stmt.setInt(3, tenantId);
             resultSet = stmt.executeQuery();
             return resultSet.next();
         } catch (SQLException e) {
@@ -244,77 +276,93 @@ public class GroupDAOImpl implements GroupDAO {
     }
 
     @Override
-    public void addDevice(int groupId, int deviceId, int tenantId) throws GroupManagementDAOException {
+    public void addDevice(String groupName, String owner, int deviceId, int tenantId)
+            throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "INSERT INTO DM_DEVICE_GROUP_MAP(DEVICE_ID, GROUP_ID, TENANT_ID) VALUES (?, ?, ?)";
+            String sql = "INSERT INTO DM_DEVICE_GROUP_MAP(DEVICE_ID, GROUP_ID, TENANT_ID) " +
+                         "VALUES (?, (SELECT ID as GROUP_ID FROM DM_GROUP " +
+                         "WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?), ?)";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, deviceId);
-            stmt.setInt(2, groupId);
+            stmt.setString(2, groupName);
-            stmt.setInt(3, tenantId);
+            stmt.setString(3, owner);
+            stmt.setInt(4, tenantId);
+            stmt.setInt(5, tenantId);
             stmt.executeUpdate();
             stmt.getGeneratedKeys();
         } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while adding device to Group '" + groupId + "'", e);
+            throw new GroupManagementDAOException("Error occurred while adding device to Group '" + groupName + "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, null);
         }
     }
 
     @Override
-    public void removeDevice(int groupId, int deviceId, int tenantId) throws GroupManagementDAOException {
+    public void removeDevice(String groupName, String owner, int deviceId, int tenantId)
+            throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "DELETE FROM DM_DEVICE_GROUP_MAP WHERE DEVICE_ID = ? AND GROUP_ID = ? AND TENANT_ID = ?";
+            String sql = "DELETE FROM DM_DEVICE_GROUP_MAP WHERE DEVICE_ID = ? AND GROUP_ID = (SELECT ID as GROUP_ID " +
+                         "FROM DM_GROUP WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?) AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, deviceId);
-            stmt.setInt(2, groupId);
+            stmt.setString(2, groupName);
-            stmt.setInt(3, tenantId);
+            stmt.setString(3, owner);
+            stmt.setInt(4, tenantId);
+            stmt.setInt(5, tenantId);
             stmt.executeUpdate();
             stmt.getGeneratedKeys();
         } catch (SQLException e) {
             throw new GroupManagementDAOException("Error occurred while removing device from Group '" +
-                                                  groupId + "'", e);
+                                                  groupName + "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, null);
         }
     }
 
     @Override
-    public boolean isDeviceMappedToGroup(int groupId, int deviceId, int tenantId)
+    public boolean isDeviceMappedToGroup(String groupName, String owner, int deviceId, int tenantId)
             throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID FROM DM_DEVICE_GROUP_MAP WHERE DEVICE_ID = ? AND GROUP_ID = ? AND TENANT_ID = ?";
+            String sql = "SELECT dm.ID FROM DM_DEVICE_GROUP_MAP dm, (SELECT ID as GROUP_ID FROM DM_GROUP " +
+                         "WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?) dg " +
+                         "WHERE dm.GROUP_ID = dg.GROUP_ID AND dm.ID = ? AND dm.TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
-            stmt.setInt(1, deviceId);
+            stmt.setString(1, groupName);
-            stmt.setInt(2, groupId);
+            stmt.setString(2, owner);
             stmt.setInt(3, tenantId);
+            stmt.setInt(4, deviceId);
+            stmt.setInt(5, tenantId);
             resultSet = stmt.executeQuery();
             return resultSet.next();
         } catch (SQLException e) {
             throw new GroupManagementDAOException("Error occurred while group Id listing by group name '" +
-                                                  groupId + "'", e);
+                                                  groupName + "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
         }
     }
 
     @Override
-    public int getDeviceCount(int groupId, int tenantId) throws GroupManagementDAOException {
+    public int getDeviceCount(String groupName, String owner, int tenantId) throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT COUNT(ID) AS DEVICE_COUNT FROM DM_DEVICE_GROUP_MAP WHERE GROUP_ID = ? " +
+            String sql = "SELECT COUNT(gm.ID) AS DEVICE_COUNT FROM DM_DEVICE_GROUP_MAP gm, (SELECT ID as GROUP_ID " +
-                         "AND TENANT_ID = ?";
+                         "FROM DM_GROUP WHERE GROUP_NAME = ? AND OWNER = ? AND TENANT_ID = ?) dg " +
+                         "WHERE dm.GROUP_ID = dg.GROUP_ID AND dm.TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
-            stmt.setInt(1, groupId);
+            stmt.setString(1, groupName);
-            stmt.setInt(2, tenantId);
+            stmt.setString(2, owner);
+            stmt.setInt(3, tenantId);
+            stmt.setInt(4, tenantId);
             resultSet = stmt.executeQuery();
             if (resultSet.next()) {
                 return resultSet.getInt("DEVICE_COUNT");
@@ -323,14 +371,14 @@ public class GroupDAOImpl implements GroupDAO {
             }
         } catch (SQLException e) {
             throw new GroupManagementDAOException("Error occurred while group Id listing by group name '" +
-                                                  groupId + "'", e);
+                                                  groupName + "'", e);
         } finally {
             GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
         }
     }
 
     @Override
-    public List<Device> getDevices(int groupId, int tenantId) throws GroupManagementDAOException {
+    public List<Device> getDevices(String groupName, String owner, int tenantId) throws GroupManagementDAOException {
         Connection conn;
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -339,16 +387,20 @@ public class GroupDAOImpl implements GroupDAO {
             conn = GroupManagementDAOFactory.getConnection();
             String sql = "SELECT d1.DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
                          "d1.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                         "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT gd.DEVICE_ID, " +
+                         "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, " +
-                         "gd.DESCRIPTION, gd.NAME, gd.DEVICE_IDENTIFICATION, t.NAME AS DEVICE_TYPE " +
+                         "(SELECT gd.DEVICE_ID, gd.DESCRIPTION, gd.NAME, gd.DEVICE_IDENTIFICATION, " +
-                         "FROM (SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME, d.DEVICE_IDENTIFICATION, " +
+                         "t.NAME AS DEVICE_TYPE FROM (SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME, " +
-                         "d.DEVICE_TYPE_ID FROM DM_DEVICE d, DM_DEVICE_GROUP_MAP dgm WHERE dgm.GROUP_ID = ? " +
+                         "d.DEVICE_IDENTIFICATION, d.DEVICE_TYPE_ID FROM DM_DEVICE d, (SELECT dgm.DEVICE_ID " +
-                         "AND d.ID = dgm.DEVICE_ID AND d.TENANT_ID = ?) gd, DM_DEVICE_TYPE t " +
+                         "FROM DM_DEVICE_GROUP_MAP dgm, DM_GROUP dg WHERE dgm.GROUP_ID = dg.ID AND dg.GROUP_NAME = ? " +
-                         "WHERE gd.DEVICE_TYPE_ID = t.ID) d1 WHERE d1.DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
+                         "AND dg.OWNER = ? AND dg.TENANT_ID = ?) dgm1 WHERE d.ID = dgm1.DEVICE_ID " +
+                         "AND d.TENANT_ID = ?) gd, DM_DEVICE_TYPE t WHERE gd.DEVICE_TYPE_ID = t.ID) d1 " +
+                         "WHERE d1.DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
-            stmt.setInt(1, groupId);
+            stmt.setString(1, groupName);
-            stmt.setInt(2, tenantId);
+            stmt.setString(2, owner);
             stmt.setInt(3, tenantId);
+            stmt.setInt(4, tenantId);
+            stmt.setInt(5, tenantId);
             rs = stmt.executeQuery();
             devices = new ArrayList<>();
             while (rs.next()) {
@@ -364,9 +416,8 @@ public class GroupDAOImpl implements GroupDAO {
         return devices;
     }
 
-    @SuppressWarnings("JpaQueryApiInspection")
     @Override
-    public List<Device> getDevices(int groupId, PaginationRequest request, int tenantId)
+    public List<Device> getDevices(String groupName, String owner, int startIndex, int rowCount, int tenantId)
             throws GroupManagementDAOException {
         Connection conn;
         PreparedStatement stmt = null;
@@ -376,22 +427,25 @@ public class GroupDAOImpl implements GroupDAO {
             conn = GroupManagementDAOFactory.getConnection();
             String sql = "SELECT d1.DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
                          "d1.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                         "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT gd.DEVICE_ID, " +
+                         "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, " +
-                         "gd.DESCRIPTION, gd.NAME, gd.DEVICE_IDENTIFICATION, t.NAME AS DEVICE_TYPE " +
+                         "(SELECT gd.DEVICE_ID, gd.DESCRIPTION, gd.NAME, gd.DEVICE_IDENTIFICATION, " +
-                         "FROM (SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME, d.DEVICE_IDENTIFICATION, " +
+                         "t.NAME AS DEVICE_TYPE FROM (SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME, " +
-                         "d.DEVICE_TYPE_ID FROM DM_DEVICE d, DM_DEVICE_GROUP_MAP dgm WHERE dgm.GROUP_ID = ? " +
+                         "d.DEVICE_IDENTIFICATION, d.DEVICE_TYPE_ID FROM DM_DEVICE d, (SELECT dgm.DEVICE_ID " +
-                         "AND d.ID = dgm.DEVICE_ID AND d.TENANT_ID = ?) gd, DM_DEVICE_TYPE t " +
+                         "FROM DM_DEVICE_GROUP_MAP dgm, DM_GROUP dg WHERE dgm.GROUP_ID = dg.ID AND dg.GROUP_NAME = ? " +
-                         "WHERE gd.DEVICE_TYPE_ID = t.ID) d1 WHERE d1.DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ? " +
+                         "AND dg.OWNER = ? AND dg.TENANT_ID = ?) dgm1 WHERE d.ID = dgm1.DEVICE_ID " +
-                         "LIMIT ?, ?";
+                         "AND d.TENANT_ID = ?) gd, DM_DEVICE_TYPE t WHERE gd.DEVICE_TYPE_ID = t.ID) d1 " +
+                         "WHERE d1.DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ? LIMIT ?, ?";
 
             stmt = conn.prepareStatement(sql);
-            stmt.setInt(1, groupId);
+            stmt.setString(1, groupName);
-            stmt.setInt(2, tenantId);
+            stmt.setString(2, owner);
             stmt.setInt(3, tenantId);
+            stmt.setInt(4, tenantId);
+            stmt.setInt(5, tenantId);
             //noinspection JpaQueryApiInspection
-            stmt.setInt(4, request.getStartIndex());
+            stmt.setInt(6, startIndex);
             //noinspection JpaQueryApiInspection
-            stmt.setInt(5, request.getRowCount());
+            stmt.setInt(7, rowCount);
             rs = stmt.executeQuery();
             devices = new ArrayList<>();
             while (rs.next()) {

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/group/mgt/dao/GroupManagementDAOUtil.java

@@ -82,7 +82,6 @@ public final class GroupManagementDAOUtil {
 
     public static DeviceGroupBuilder loadGroup(ResultSet resultSet) throws SQLException {
         DeviceGroupBuilder group = new DeviceGroupBuilder(new DeviceGroup());
-        group.setId(resultSet.getInt("ID"));
         group.setDescription(resultSet.getString("DESCRIPTION"));
         group.setName(resultSet.getString("GROUP_NAME"));
         group.setDateOfCreation(resultSet.getLong("DATE_OF_CREATE"));

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/GroupManagementProviderService.java

@@ -20,8 +20,9 @@ package org.wso2.carbon.device.mgt.core.service;
 
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
-import org.wso2.carbon.device.mgt.common.PaginationRequest;
+import org.wso2.carbon.device.mgt.common.PaginationResult;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
+import org.wso2.carbon.device.mgt.common.group.mgt.GroupAlreadyEixistException;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupManagementException;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupUser;
 
@@ -33,41 +34,43 @@ import java.util.List;
 public interface GroupManagementProviderService {
 
     /**
-     * Add new device group and create default role with default permissions
+     * Add new device group and create default role with default permissions.
      *
      * @param deviceGroup        to add
      * @param defaultRole        of the deviceGroup
      * @param defaultPermissions of the default role
-     * @return id of the new group
      * @throws GroupManagementException
      */
-    int createGroup(DeviceGroup deviceGroup, String defaultRole,
+    void createGroup(DeviceGroup deviceGroup, String defaultRole,
-                    String[] defaultPermissions) throws GroupManagementException;
+                     String[] defaultPermissions) throws GroupManagementException, GroupAlreadyEixistException;
 
     /**
-     * Update existing device group
+     * Update existing device group.
      *
-     * @param deviceGroup to update
+     * @param deviceGroup to update.
+     * @param oldGroupName  of the group.
      * @throws GroupManagementException
      */
-    void updateGroup(DeviceGroup deviceGroup) throws GroupManagementException;
+    void updateGroup(DeviceGroup deviceGroup, String oldGroupName) throws GroupManagementException;
 
     /**
-     * Delete existing device group
+     * Delete existing device group.
      *
-     * @param groupId of the group to delete
+     * @param groupName to be deleted.
+     * @param owner     of the group.
      * @throws GroupManagementException
      */
-    boolean deleteGroup(int groupId) throws GroupManagementException;
+    boolean deleteGroup(String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Get device group specified by groupId
+     * Get device group specified by group name.
      *
-     * @param groupId of the group of the group
+     * @param groupName of the group.
+     * @param owner     of the group.
      * @return group
      * @throws GroupManagementException
      */
-    DeviceGroup getGroup(int groupId) throws GroupManagementException;
+    DeviceGroup getGroup(String groupName, String owner) throws GroupManagementException;
 
     /**
      * Get list of device groups matched with %groupName%
@@ -80,12 +83,14 @@ public interface GroupManagementProviderService {
     List<DeviceGroup> findInGroups(String groupName, String username) throws GroupManagementException;
 
     /**
-     * Get all device groups in tenant
+     * Get paginated device groups in tenant
      *
-     * @return list of groups
+     * @param startIndex for pagination.
+     * @param rowCount for pagination.
+     * @return paginated list of groups
      * @throws GroupManagementException
      */
-    List<DeviceGroup> getGroups(PaginationRequest request) throws GroupManagementException;
+    PaginationResult getGroups(int startIndex, int rowCount) throws GroupManagementException;
 
     /**
      * Get all device group count in tenant
@@ -117,154 +122,158 @@ public interface GroupManagementProviderService {
      * Share device group with user specified by role
      *
      * @param username    of the user
-     * @param groupId     of the group of the group
+     * @param groupName   of the group
+     * @param owner       of the group
      * @param sharingRole to be shared
      * @return is group shared
      * @throws GroupManagementException
      */
-    boolean shareGroup(String username, int groupId, String sharingRole)
+    boolean shareGroup(String username, String groupName, String owner, String sharingRole)
             throws GroupManagementException;
 
     /**
      * Un share existing group sharing with user specified by role
      *
      * @param userName    of the user
-     * @param groupId     of the group of the group
+     * @param groupName   of the group
+     * @param owner       of the group
      * @param sharingRole to be un shared
      * @return is group un shared
      * @throws GroupManagementException
      */
-    boolean unshareGroup(String userName, int groupId, String sharingRole)
+    boolean unshareGroup(String userName, String groupName, String owner, String sharingRole)
             throws GroupManagementException;
 
     /**
      * Add new sharing role for device group
      *
      * @param userName    of the user
-     * @param groupId     of the group
+     * @param groupName   of the group
+     * @param owner       of the group
      * @param roleName    to add
      * @param permissions to bind with role
      * @return is role added
      * @throws GroupManagementException
      */
-    boolean addGroupSharingRole(String userName, int groupId, String roleName, String[] permissions)
+    boolean addGroupSharingRole(String userName, String groupName, String owner, String roleName, String[] permissions)
             throws GroupManagementException;
 
     /**
      * Remove existing sharing role for device group
      *
-     * @param groupId  of the group
+     * @param groupName   of the group
-     * @param roleName to remove
+     * @param owner       of the group
+     * @param roleName    to remove
      * @return is role removed
      * @throws GroupManagementException
      */
-    boolean removeGroupSharingRole(int groupId, String roleName) throws GroupManagementException;
+    boolean removeGroupSharingRole(String groupName, String owner, String roleName) throws GroupManagementException;
 
     /**
      * Get all sharing roles for device group
      *
-     * @param groupId of the group
+     * @param groupName   of the group
+     * @param owner       of the group
      * @return list of roles
      * @throws GroupManagementException
      */
-    List<String> getRoles(int groupId) throws GroupManagementException;
+    List<String> getRoles(String groupName, String owner) throws GroupManagementException;
 
     /**
      * Get specific device group sharing roles for user
      *
-     * @param userName of the user
+     * @param userName    of the user
-     * @param groupId  of the group
+     * @param groupName   of the group
+     * @param owner       of the group
      * @return list of roles
      * @throws GroupManagementException
      */
-    List<String> getRoles(String userName, int groupId) throws GroupManagementException;
+    List<String> getRoles(String userName, String groupName, String owner) throws GroupManagementException;
 
     /**
      * Get device group users
      *
-     * @param groupId of the group
+     * @param groupName   of the group
+     * @param owner       of the group
      * @return list of group users
      * @throws GroupManagementException
      */
-    List<GroupUser> getUsers(int groupId) throws GroupManagementException;
+    List<GroupUser> getUsers(String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Get all devices in device group
+     * Get all devices in device group.
      *
-     * @param groupId of the group
+     * @param groupName   of the group.
-     * @return list of group devices
+     * @param owner       of the group.
+     * @return list of group devices.
      * @throws GroupManagementException
      */
-    List<Device> getDevices(int groupId) throws GroupManagementException;
+    List<Device> getDevices(String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Get all devices in device group
+     * Get all devices in device group as paginated result.
      *
-     * @param groupId of the group
+     * @param groupName   of the group.
-     * @param request PaginationRequest object holding the data for pagination
+     * @param owner       of the group.
-     * @return list of group devices
+     * @param startIndex for pagination.
+     * @param rowCount for pagination.
+     * @return Paginated list of devices.
      * @throws GroupManagementException
      */
-    List<Device> getDevices(int groupId, PaginationRequest request) throws GroupManagementException;
+    PaginationResult getDevices(String groupName, String owner, int startIndex, int rowCount)
+            throws GroupManagementException;
 
     /**
      * This method is used to retrieve the device count of a given group.
      *
-     * @param groupId Name of the group
+     * @param groupName   of the group.
+     * @param owner       of the group.
      * @return returns the device count.
      * @throws GroupManagementException
      */
-    int getDeviceCount(int groupId) throws GroupManagementException;
+    int getDeviceCount(String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Add device to device group
+     * Add device to device group.
      *
-     * @param deviceId of the device
+     * @param deviceId of the device.
-     * @param groupId  of the group
+     * @param groupName   of the group.
-     * @return is device added
+     * @param owner       of the group.
+     * @return is device added.
      * @throws GroupManagementException
      */
-    boolean addDevice(DeviceIdentifier deviceId, int groupId) throws GroupManagementException;
+    boolean addDevice(DeviceIdentifier deviceId, String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Remove device from device group
+     * Remove device from device group.
      *
-     * @param deviceId of the device
+     * @param deviceId of the device.
-     * @param groupId  of the group
+     * @param groupName   of the group.
-     * @return is device removed
+     * @param owner       of the group.
+     * @return is device removed.
      * @throws GroupManagementException
      */
-    boolean removeDevice(DeviceIdentifier deviceId, int groupId) throws GroupManagementException;
+    boolean removeDevice(DeviceIdentifier deviceId, String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Get device group permissions of user
+     * Get device group permissions of user.
      *
-     * @param username of the user
+     * @param username of the user.
-     * @param groupId  of the group
+     * @param groupName   of the group.
-     * @return array of permissions
+     * @param owner       of the group.
+     * @return array of permissions.
      * @throws GroupManagementException
      */
-    String[] getPermissions(String username, int groupId) throws GroupManagementException;
+    String[] getPermissions(String username, String groupName, String owner) throws GroupManagementException;
 
     /**
-     * Get device groups of user with permission
+     * Get device groups of user with permission.
      *
-     * @param username   of the user
+     * @param username   of the user.
-     * @param permission to filter
+     * @param permission to filter.
-     * @return group list with specified permissions
+     * @return group list with specified permissions.
      * @throws GroupManagementException
      */
     List<DeviceGroup> getGroups(String username, String permission) throws GroupManagementException;
 
-    /**
-     * Check user is authorized for specific permission of device group
-     *
-     * @param username   of the user
-     * @param groupId    to authorize
-     * @param permission to authorize
-     * @return is user authorized for permission
-     * @throws GroupManagementException
-     */
-    boolean isAuthorized(String username, int groupId, String permission) throws GroupManagementException;
-
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/GroupManagementProviderServiceImpl.java

@@ -25,9 +25,10 @@ import org.wso2.carbon.context.CarbonContext;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
 import org.wso2.carbon.device.mgt.common.DeviceManagementException;
-import org.wso2.carbon.device.mgt.common.PaginationRequest;
+import org.wso2.carbon.device.mgt.common.PaginationResult;
 import org.wso2.carbon.device.mgt.common.TransactionManagementException;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
+import org.wso2.carbon.device.mgt.common.group.mgt.GroupAlreadyEixistException;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupManagementException;
 import org.wso2.carbon.device.mgt.common.group.mgt.GroupUser;
 import org.wso2.carbon.device.mgt.core.group.mgt.DeviceGroupBuilder;
@@ -64,8 +65,8 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public int createGroup(DeviceGroup deviceGroup, String defaultRole, String[] defaultPermissions)
+    public void createGroup(DeviceGroup deviceGroup, String defaultRole, String[] defaultPermissions)
-            throws GroupManagementException {
+            throws GroupManagementException, GroupAlreadyEixistException {
         if (deviceGroup == null) {
             throw new GroupManagementException("DeviceGroup cannot be null.", new NullPointerException());
         }
@@ -74,16 +75,12 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         int groupId = -1;
         try {
             GroupManagementDAOFactory.beginTransaction();
-            boolean nameIsExists = this.groupDAO.isGroupExist(deviceGroup.getName(), tenantId);
+            boolean nameIsExists = this.groupDAO.isGroupExist(deviceGroup.getName(), deviceGroup.getOwner(), tenantId);
             if (!nameIsExists) {
                 groupId = this.groupDAO.addGroup(groupBroker, tenantId);
                 GroupManagementDAOFactory.commitTransaction();
-                if (groupId < 0) {
-                    return -1;
-                }
-                groupBroker.setId(groupId);
             } else {
-                return -2;
+                throw new GroupAlreadyEixistException("Group exist with name " + deviceGroup.getName());
             }
         } catch (GroupManagementDAOException e) {
             GroupManagementDAOFactory.rollbackTransaction();
@@ -99,20 +96,20 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         if (log.isDebugEnabled()) {
             log.debug("DeviceGroup added: " + groupBroker.getName());
         }
-        return groupId;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
-    public void updateGroup(DeviceGroup deviceGroup) throws GroupManagementException {
+    public void updateGroup(DeviceGroup deviceGroup, String oldGroupName) throws GroupManagementException {
         if (deviceGroup == null) {
             throw new GroupManagementException("DeviceGroup cannot be null.", new NullPointerException());
         }
         try {
+            int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             GroupManagementDAOFactory.beginTransaction();
-            this.groupDAO.updateGroup(deviceGroup, CarbonContext.getThreadLocalCarbonContext().getTenantId());
+            this.groupDAO.updateGroup(deviceGroup, oldGroupName, tenantId);
             GroupManagementDAOFactory.commitTransaction();
         } catch (GroupManagementDAOException e) {
             GroupManagementDAOFactory.rollbackTransaction();
@@ -129,22 +126,22 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public boolean deleteGroup(int groupId) throws GroupManagementException {
+    public boolean deleteGroup(String groupName, String owner) throws GroupManagementException {
         String roleName;
-        DeviceGroup deviceGroup = getGroup(groupId);
+        DeviceGroupBuilder deviceGroup = getGroupBuilder(groupName, owner);
         if (deviceGroup == null) {
             return false;
         }
-        List<String> groupRoles = getRoles(groupId);
+        List<String> groupRoles = getRoles(groupName, owner);
         for (String role : groupRoles) {
             if (role != null) {
-                roleName = role.replace("Internal/group-" + groupId + "-", "");
+                roleName = role.replace("Internal/group-" + deviceGroup.getGroupId() + "-", "");
-                removeGroupSharingRole(groupId, roleName);
+                removeGroupSharingRole(deviceGroup.getGroupId(), roleName);
             }
         }
         try {
             GroupManagementDAOFactory.beginTransaction();
-            this.groupDAO.deleteGroup(groupId, CarbonContext.getThreadLocalCarbonContext().getTenantId());
+            this.groupDAO.deleteGroup(groupName, owner, CarbonContext.getThreadLocalCarbonContext().getTenantId());
             GroupManagementDAOFactory.commitTransaction();
             if (log.isDebugEnabled()) {
                 log.debug("DeviceGroup " + deviceGroup.getName() + " removed.");
@@ -153,7 +150,7 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         } catch (GroupManagementDAOException e) {
             GroupManagementDAOFactory.rollbackTransaction();
             throw new GroupManagementException("Error occurred while removing group " +
-                                               "'" + groupId + "' data.", e);
+                                               "'" + groupName + "' data.", e);
         } catch (TransactionManagementException e) {
             throw new GroupManagementException("Error occurred while initiating transaction.", e);
         } finally {
@@ -165,25 +162,49 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public DeviceGroup getGroup(int groupId) throws GroupManagementException {
+    public DeviceGroup getGroup(String groupName, String owner) throws GroupManagementException {
+        return getGroupBuilder(groupName, owner).getGroup();
+    }
+
+    @SuppressWarnings("Duplicates")
+    private DeviceGroupBuilder getGroupBuilder(String groupName, String owner) throws GroupManagementException {
+        DeviceGroupBuilder deviceGroupBuilder;
+        try {
+            GroupManagementDAOFactory.openConnection();
+            int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
+            deviceGroupBuilder = this.groupDAO.getGroup(groupName, owner, tenantId);
+        } catch (GroupManagementDAOException e) {
+            throw new GroupManagementException("Error occurred while obtaining group '" + groupName + "'", e);
+        } catch (SQLException e) {
+            throw new GroupManagementException("Error occurred while opening a connection to the data source.", e);
+        } finally {
+            GroupManagementDAOFactory.closeConnection();
+        }
+        if (deviceGroupBuilder != null) {
+            deviceGroupBuilder.setUsers(this.getUsers(deviceGroupBuilder.getGroupId()));
+            deviceGroupBuilder.setRoles(this.getRoles(deviceGroupBuilder.getGroupId()));
+        }
+        return deviceGroupBuilder;
+    }
+
+    @SuppressWarnings("Duplicates")
+    private DeviceGroupBuilder getGroupBuilder(int groupId) throws GroupManagementException {
         DeviceGroupBuilder groupBroker;
         try {
             GroupManagementDAOFactory.openConnection();
             groupBroker = this.groupDAO.getGroup(groupId, CarbonContext.getThreadLocalCarbonContext().getTenantId());
         } catch (GroupManagementDAOException e) {
-            throw new GroupManagementException("Error occurred while obtaining group " + groupId, e);
+            throw new GroupManagementException("Error occurred while obtaining group '" + groupId + "'", e);
         } catch (SQLException e) {
             throw new GroupManagementException("Error occurred while opening a connection to the data source.", e);
         } finally {
             GroupManagementDAOFactory.closeConnection();
         }
         if (groupBroker != null) {
-            groupBroker.setUsers(this.getUsers(groupId));
+            groupBroker.setUsers(this.getUsers(groupBroker.getGroupId()));
-            groupBroker.setRoles(this.getRoles(groupId));
+            groupBroker.setRoles(this.getRoles(groupBroker.getGroupId()));
-            return groupBroker.getGroup();
-        } else {
-            return null;
         }
+        return groupBroker;
     }
 
     /**
@@ -205,20 +226,20 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         }
         List<DeviceGroup> groupsWithData = new ArrayList<>();
         for (DeviceGroupBuilder groupBroker : deviceGroups) {
-            groupBroker.setUsers(this.getUsers(groupBroker.getId()));
+            groupBroker.setUsers(this.getUsers(groupBroker.getGroupId()));
-            groupBroker.setRoles(this.getRoles(groupBroker.getId()));
+            groupBroker.setRoles(this.getRoles(groupBroker.getGroupId()));
             groupsWithData.add(groupBroker.getGroup());
         }
         return groupsWithData;
     }
 
     @Override
-    public List<DeviceGroup> getGroups(PaginationRequest request) throws GroupManagementException {
+    public PaginationResult getGroups(int startIndex, int rowCount) throws GroupManagementException {
         List<DeviceGroupBuilder> deviceGroups = new ArrayList<>();
         try {
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             GroupManagementDAOFactory.openConnection();
-            deviceGroups = this.groupDAO.getGroups(request, tenantId);
+            deviceGroups = this.groupDAO.getGroups(startIndex, rowCount, tenantId);
         } catch (GroupManagementDAOException e) {
             throw new GroupManagementException("Error occurred while retrieving all groups in tenant", e);
         } catch (SQLException e) {
@@ -228,21 +249,23 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         }
         List<DeviceGroup> groupsWithData = new ArrayList<>();
         for (DeviceGroupBuilder groupBroker : deviceGroups) {
-            groupBroker.setUsers(this.getUsers(groupBroker.getId()));
+            groupBroker.setUsers(this.getUsers(groupBroker.getGroupId()));
-            groupBroker.setRoles(this.getRoles(groupBroker.getId()));
+            groupBroker.setRoles(this.getRoles(groupBroker.getGroupId()));
             groupsWithData.add(groupBroker.getGroup());
         }
-        return groupsWithData;
+        PaginationResult paginationResult = new PaginationResult();
+        paginationResult.setRecordsTotal(getGroupCount());
+        paginationResult.setData(groupsWithData);
+        paginationResult.setRecordsFiltered(groupsWithData.size());
+        return paginationResult;
     }
 
     @Override
     public int getGroupCount() throws GroupManagementException {
         try {
-            int count;
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             GroupManagementDAOFactory.openConnection();
-            count = groupDAO.getGroupCount(tenantId);
+            return groupDAO.getGroupCount(tenantId);
-            return count;
         } catch (GroupManagementDAOException e) {
             throw new GroupManagementException("Error occurred while retrieving all groups in tenant", e);
         } catch (SQLException e) {
@@ -266,9 +289,9 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
             Map<Integer, DeviceGroup> groups = new HashMap<>();
             for (String role : roleList) {
                 if (role != null && role.contains("Internal/group-")) {
-                    DeviceGroup deviceGroup = extractNewGroupFromRole(groups, role);
+                    DeviceGroupBuilder deviceGroupBuilder = extractNewGroupFromRole(groups, role);
-                    if (deviceGroup != null) {
+                    if (deviceGroupBuilder != null) {
-                        groups.put(deviceGroup.getId(), deviceGroup);
+                        groups.put(deviceGroupBuilder.getGroupId(), deviceGroupBuilder.getGroup());
                     }
                 }
             }
@@ -283,15 +306,36 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      */
     @Override
     public int getGroupCount(String username) throws GroupManagementException {
-        return this.getGroups(username).size();
+        UserStoreManager userStoreManager;
+        int count = 0;
+        try {
+            int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
+            userStoreManager = DeviceManagementDataHolder.getInstance().getRealmService().getTenantUserRealm(tenantId)
+                    .getUserStoreManager();
+            String[] roleList = userStoreManager.getRoleListOfUser(username);
+            List<Integer> groupIds = new ArrayList<>();
+            for (String role : roleList) {
+                if (role != null && role.contains("Internal/group-")) {
+                    int groupId = Integer.parseInt(role.split("-")[1]);
+                    if (!groupIds.contains(groupId)) {
+                        groupIds.add(groupId);
+                        count++;
+                    }
+                }
+            }
+            return count;
+        } catch (UserStoreException e) {
+            throw new GroupManagementException("Error occurred while getting user store manager.", e);
+        }
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
-    public boolean shareGroup(String username, int groupId, String sharingRole)
+    public boolean shareGroup(String username, String groupName, String owner, String sharingRole)
             throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
         return modifyGroupShare(username, groupId, sharingRole, true);
     }
 
@@ -299,26 +343,66 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public boolean unshareGroup(String username, int groupId, String sharingRole)
+    public boolean unshareGroup(String username, String groupName, String owner, String sharingRole)
             throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
         return modifyGroupShare(username, groupId, sharingRole, false);
     }
 
+    private boolean modifyGroupShare(String username, int groupId, String sharingRole,
+                                     boolean isAddNew)
+            throws GroupManagementException {
+        if (groupId == -1) {
+            return false;
+        }
+        UserStoreManager userStoreManager;
+        String[] roles = new String[1];
+        try {
+            int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
+            userStoreManager =
+                    DeviceManagementDataHolder.getInstance().getRealmService().getTenantUserRealm(
+                            tenantId).getUserStoreManager();
+            roles[0] = "Internal/group-" + groupId + "-" + sharingRole;
+            if (isAddNew) {
+                userStoreManager.updateRoleListOfUser(username, null, roles);
+            } else {
+                userStoreManager.updateRoleListOfUser(username, roles, null);
+            }
+            return true;
+        } catch (UserStoreException e) {
+            throw new GroupManagementException("User store error in adding user " + username + " to group name:" +
+                                               groupId, e);
+        }
+    }
+
+    private int getGroupId(String groupName, String owner) throws GroupManagementException {
+        DeviceGroupBuilder deviceGroupBuilder = getGroupBuilder(groupName, owner);
+        if (deviceGroupBuilder == null) {
+            return -1;
+        }
+        return deviceGroupBuilder.getGroupId();
+    }
+
     /**
      * {@inheritDoc}
      */
     @Override
-    public boolean addGroupSharingRole(String username, int groupId, String roleName,
+    public boolean addGroupSharingRole(String userName, String groupName, String owner, String roleName,
+                                       String[] permissions) throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
+        return addGroupSharingRole(userName, groupId, roleName, permissions);
+    }
+
+    private boolean addGroupSharingRole(String username, int groupId, String roleName,
                                        String[] permissions)
             throws GroupManagementException {
+        if (groupId == -1) {
+            return false;
+        }
         UserStoreManager userStoreManager;
         String role;
         String[] userNames = new String[1];
         try {
-            DeviceGroup deviceGroup = getGroup(groupId);
-            if (deviceGroup == null) {
-                return false;
-            }
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             userStoreManager = DeviceManagementDataHolder.getInstance().getRealmService().getTenantUserRealm(tenantId)
                     .getUserStoreManager();
@@ -340,15 +424,20 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public boolean removeGroupSharingRole(int groupId, String roleName)
+    public boolean removeGroupSharingRole(String groupName, String owner, String roleName)
+            throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
+        return removeGroupSharingRole(groupId, roleName);
+    }
+
+    private boolean removeGroupSharingRole(int groupId, String roleName)
             throws GroupManagementException {
+        if (groupId == -1) {
+            return false;
+        }
         UserStoreManager userStoreManager;
         String role;
         try {
-            DeviceGroup deviceGroup = getGroup(groupId);
-            if (deviceGroup == null) {
-                return false;
-            }
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             userStoreManager = DeviceManagementDataHolder.getInstance().getRealmService().getTenantUserRealm(tenantId)
                     .getUserStoreManager();
@@ -366,7 +455,12 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public List<String> getRoles(int groupId) throws GroupManagementException {
+    public List<String> getRoles(String groupName, String owner) throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
+        return getRoles(groupId);
+    }
+
+    private List<String> getRoles(int groupId) throws GroupManagementException {
         UserStoreManager userStoreManager;
         String[] roles;
         List<String> groupRoles;
@@ -393,7 +487,12 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public List<String> getRoles(String username, int groupId) throws GroupManagementException {
+    public List<String> getRoles(String username, String groupName, String owner) throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
+        return getRoles(username, groupId);
+    }
+
+    private List<String> getRoles(String username, int groupId) throws GroupManagementException {
         UserStoreManager userStoreManager;
         List<String> groupRoleList = new ArrayList<>();
         try {
@@ -417,6 +516,11 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
+    public List<GroupUser> getUsers(String groupName, String owner) throws GroupManagementException {
+        int groupId = getGroupId(groupName, owner);
+        return getUsers(groupId);
+    }
+
     public List<GroupUser> getUsers(int groupId) throws GroupManagementException {
         UserStoreManager userStoreManager;
         Map<String, GroupUser> groupUserHashMap = new HashMap<>();
@@ -453,11 +557,11 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public List<Device> getDevices(int groupId) throws GroupManagementException {
+    public List<Device> getDevices(String groupName, String owner) throws GroupManagementException {
         try {
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             GroupManagementDAOFactory.getConnection();
-            return this.groupDAO.getDevices(groupId, tenantId);
+            return this.groupDAO.getDevices(groupName, owner, tenantId);
         } catch (GroupManagementDAOException e) {
             throw new GroupManagementException("Error occurred while getting devices in group.", e);
         } catch (SQLException e) {
@@ -471,12 +575,13 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public List<Device> getDevices(int groupId, PaginationRequest request)
+    public PaginationResult getDevices(String groupName, String owner, int startIndex, int rowCount)
             throws GroupManagementException {
         int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
+        List<Device> devices;
         try {
             GroupManagementDAOFactory.getConnection();
-            return this.groupDAO.getDevices(groupId, request, tenantId);
+            devices = this.groupDAO.getDevices(groupName, owner, startIndex, rowCount, tenantId);
         } catch (GroupManagementDAOException e) {
             throw new GroupManagementException("Error occurred while getting devices in group.", e);
         } catch (SQLException e) {
@@ -484,17 +589,22 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         } finally {
             GroupManagementDAOFactory.closeConnection();
         }
+        PaginationResult paginationResult = new PaginationResult();
+        paginationResult.setRecordsTotal(getDeviceCount(groupName, owner));
+        paginationResult.setData(devices);
+        paginationResult.setRecordsFiltered(devices.size());
+        return paginationResult;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
-    public int getDeviceCount(int groupId) throws GroupManagementException {
+    public int getDeviceCount(String groupName, String owner) throws GroupManagementException {
         try {
             int count;
             GroupManagementDAOFactory.getConnection();
-            count = groupDAO.getDeviceCount(groupId,
+            count = groupDAO.getDeviceCount(groupName, owner,
                                             CarbonContext.getThreadLocalCarbonContext().getTenantId());
             return count;
         } catch (GroupManagementDAOException e) {
@@ -510,25 +620,23 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public boolean addDevice(DeviceIdentifier deviceIdentifier, int groupId)
+    public boolean addDevice(DeviceIdentifier deviceIdentifier, String groupName, String owner)
             throws GroupManagementException {
         Device device;
-        DeviceGroup deviceGroup;
         try {
             device = DeviceManagementDataHolder.getInstance().getDeviceManagementProvider().getDevice(deviceIdentifier);
-            deviceGroup = this.getGroup(groupId);
+            if (device == null) {
-            if (device == null || deviceGroup == null) {
                 return false;
             }
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             GroupManagementDAOFactory.beginTransaction();
-            this.groupDAO.addDevice(groupId, device.getId(), tenantId);
+            this.groupDAO.addDevice(groupName, owner, device.getId(), tenantId);
             GroupManagementDAOFactory.commitTransaction();
         } catch (DeviceManagementException e) {
             throw new GroupManagementException("Error occurred while retrieving device.", e);
         } catch (GroupManagementDAOException e) {
             GroupManagementDAOFactory.rollbackTransaction();
-            throw new GroupManagementException("Error occurred while adding device to group '" + groupId + "'.", e);
+            throw new GroupManagementException("Error occurred while adding device to group '" + groupName + "'.", e);
         } catch (TransactionManagementException e) {
             throw new GroupManagementException("Error occurred while initiating transaction.", e);
         } finally {
@@ -541,19 +649,17 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public boolean removeDevice(DeviceIdentifier deviceIdentifier, int groupId)
+    public boolean removeDevice(DeviceIdentifier deviceIdentifier, String groupName, String owner)
             throws GroupManagementException {
         Device device;
-        DeviceGroup deviceGroup;
         try {
             device = DeviceManagementDataHolder.getInstance().getDeviceManagementProvider().getDevice(deviceIdentifier);
-            deviceGroup = this.getGroup(groupId);
+            if (device == null) {
-            if (device == null || deviceGroup == null) {
                 return false;
             }
             int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
             GroupManagementDAOFactory.beginTransaction();
-            this.groupDAO.removeDevice(groupId, device.getId(), tenantId);
+            this.groupDAO.removeDevice(groupName, owner, device.getId(), tenantId);
             GroupManagementDAOFactory.commitTransaction();
         } catch (DeviceManagementException e) {
             throw new GroupManagementException("Error occurred while retrieving device.", e);
@@ -561,7 +667,7 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
             throw new GroupManagementException("Error occurred while initiating transaction.", e);
         } catch (GroupManagementDAOException e) {
             GroupManagementDAOFactory.rollbackTransaction();
-            throw new GroupManagementException("Error occurred while adding device to group '" + groupId + "'.", e);
+            throw new GroupManagementException("Error occurred while adding device to group '" + groupName + "'.", e);
         } finally {
             GroupManagementDAOFactory.closeConnection();
         }
@@ -572,8 +678,9 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
      * {@inheritDoc}
      */
     @Override
-    public String[] getPermissions(String username, int groupId) throws GroupManagementException {
+    public String[] getPermissions(String username, String groupName, String owner) throws GroupManagementException {
         UserRealm userRealm;
+        int groupId = getGroupId(groupName, owner);
         List<String> roles = getRoles(username, groupId);
         int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
         try {
@@ -613,9 +720,9 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
             for (String role : roles) {
                 if (role != null && role.contains("Internal/group-") && userRealm.getAuthorizationManager()
                         .isRoleAuthorized(role, permission, CarbonConstants.UI_PERMISSION_ACTION)) {
-                    DeviceGroup deviceGroup = extractNewGroupFromRole(groups, role);
+                    DeviceGroupBuilder deviceGroupBuilder = extractNewGroupFromRole(groups, role);
-                    if (deviceGroup != null) {
+                    if (deviceGroupBuilder != null) {
-                        groups.put(deviceGroup.getId(), deviceGroup);
+                        groups.put(deviceGroupBuilder.getGroupId(), deviceGroupBuilder.getGroup());
                     }
                 }
             }
@@ -625,63 +732,12 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         }
     }
 
-    /**
+    private DeviceGroupBuilder extractNewGroupFromRole(Map<Integer, DeviceGroup> groups, String role)
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean isAuthorized(String username, int groupId, String permission)
-            throws GroupManagementException {
-        UserRealm userRealm;
-        int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
-        try {
-            userRealm = DeviceManagementDataHolder.getInstance().getRealmService().getTenantUserRealm(tenantId);
-            List<String> roles = this.getRoles(username, groupId);
-            for (String role : roles) {
-                if (userRealm.getAuthorizationManager()
-                        .isRoleAuthorized("Internal/group-" + groupId + "-" + role, permission,
-                                          CarbonConstants.UI_PERMISSION_ACTION)) {
-                    return true;
-                }
-            }
-            return false;
-        } catch (UserStoreException e) {
-            throw new GroupManagementException("Error occurred while getting user realm.", e);
-        }
-    }
-
-    private boolean modifyGroupShare(String username, int groupId, String sharingRole,
-                                     boolean isAddNew)
-            throws GroupManagementException {
-        UserStoreManager userStoreManager;
-        String[] roles = new String[1];
-        try {
-            DeviceGroup deviceGroup = getGroup(groupId);
-            if (deviceGroup == null) {
-                return false;
-            }
-            int tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();
-            userStoreManager =
-                    DeviceManagementDataHolder.getInstance().getRealmService().getTenantUserRealm(
-                            tenantId).getUserStoreManager();
-            roles[0] = "Internal/group-" + groupId + "-" + sharingRole;
-            if (isAddNew) {
-                userStoreManager.updateRoleListOfUser(username, null, roles);
-            } else {
-                userStoreManager.updateRoleListOfUser(username, roles, null);
-            }
-            return true;
-        } catch (UserStoreException e) {
-            throw new GroupManagementException("User store error in adding user " + username + " to group name:" +
-                                               groupId, e);
-        }
-    }
-
-    private DeviceGroup extractNewGroupFromRole(Map<Integer, DeviceGroup> groups, String role)
             throws GroupManagementException {
         try {
             int groupId = Integer.parseInt(role.split("-")[1]);
             if (!groups.containsKey(groupId)) {
-                return getGroup(groupId);
+                return getGroupBuilder(groupId);
             }
         } catch (NumberFormatException e) {
             log.error("Unable to extract groupId from role " + role, e);

components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/dao/GroupPersistTests.java

@@ -24,7 +24,6 @@ import org.testng.Assert;
 import org.testng.annotations.BeforeClass;
 import org.testng.annotations.Test;
 import org.wso2.carbon.device.mgt.common.Device;
-import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.TransactionManagementException;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
 import org.wso2.carbon.device.mgt.core.common.BaseDeviceManagementTest;
@@ -77,59 +76,6 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
         log.debug("Group name: " + group.getName());
     }
 
-    public DeviceGroup getGroupById(int groupId) {
-        try {
-            GroupManagementDAOFactory.openConnection();
-            return groupDAO.getGroup(groupId, TestDataHolder.SUPER_TENANT_ID);
-        } catch (GroupManagementDAOException e) {
-            String msg = "Error occurred while retrieving group details.";
-            log.error(msg, e);
-            Assert.fail(msg, e);
-        } catch (SQLException e) {
-            String msg = "Error occurred while opening a connection to the data source.";
-            log.error(msg, e);
-            Assert.fail(msg, e);
-        } finally {
-            GroupManagementDAOFactory.closeConnection();
-        }
-        return null;
-    }
-
-    @Test(dependsOnMethods = {"testAddGroupTest"})
-    public void updateGroupTest() {
-        long time = new Date().getTime();
-        String name = "Test Updated";
-        String desc = "Desc updated";
-        DeviceGroup group = getGroupById(groupId);
-        Assert.assertNotNull(group, "Group is null");
-        group.setDateOfLastUpdate(time);
-        group.setName(name);
-        group.setDescription(desc);
-        try {
-            GroupManagementDAOFactory.beginTransaction();
-            groupDAO.updateGroup(group, TestDataHolder.SUPER_TENANT_ID);
-            GroupManagementDAOFactory.commitTransaction();
-            log.debug("Group updated");
-        } catch (GroupManagementDAOException e) {
-            GroupManagementDAOFactory.rollbackTransaction();
-            String msg = "Error occurred while updating group details.";
-            log.error(msg, e);
-            Assert.fail(msg, e);
-        } catch (TransactionManagementException e) {
-            String msg = "Error occurred while initiating transaction.";
-            log.error(msg, e);
-            Assert.fail(msg, e);
-        } finally {
-            GroupManagementDAOFactory.closeConnection();
-        }
-
-        group = getGroupById(group.getId());
-        Assert.assertNotNull(group, "Group is null");
-        Assert.assertEquals(group.getName(), name, "Group name");
-        Assert.assertEquals(group.getDescription(), desc, "Group description");
-        Assert.assertEquals((long) group.getDateOfLastUpdate(), time, "Update time");
-    }
-
     @Test(dependsOnMethods = {"testAddGroupTest"})
     public void findGroupTest() {
         try {
@@ -155,8 +101,7 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
     public void getGroupTest() {
         try {
             GroupManagementDAOFactory.openConnection();
-            PaginationRequest paginationRequest = new PaginationRequest(0, 1000);
+            List<DeviceGroupBuilder> groups = groupDAO.getGroups(0, 100, TestDataHolder.SUPER_TENANT_ID);
-            List<DeviceGroupBuilder> groups = groupDAO.getGroups(paginationRequest, TestDataHolder.SUPER_TENANT_ID);
             Assert.assertNotEquals(groups.size(), 0, "No groups found");
             Assert.assertNotNull(groups.get(0), "Group is null");
             log.debug("No of Groups found: " + groups.size());
@@ -173,12 +118,14 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
         }
     }
 
-    @Test(dependsOnMethods = {"updateGroupTest"})
+    @Test(dependsOnMethods = {"testAddGroupTest"})
     public void addDeviceToGroupTest() {
         Device initialTestDevice = TestDataHolder.initialTestDevice;
+        DeviceGroup deviceGroup = getGroupById(groupId);
         try {
             GroupManagementDAOFactory.beginTransaction();
-            groupDAO.addDevice(groupId, initialTestDevice.getId(), TestDataHolder.SUPER_TENANT_ID);
+            groupDAO.addDevice(deviceGroup.getName(), deviceGroup.getOwner(), initialTestDevice.getId(),
+                               TestDataHolder.SUPER_TENANT_ID);
             GroupManagementDAOFactory.commitTransaction();
             log.debug("Device added to group.");
         } catch (GroupManagementDAOException e) {
@@ -196,7 +143,8 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
 
         try {
             GroupManagementDAOFactory.openConnection();
-            List<Device> groupedDevices = groupDAO.getDevices(groupId, TestDataHolder.SUPER_TENANT_ID);
+            List<Device> groupedDevices = groupDAO.getDevices(deviceGroup.getName(), deviceGroup.getOwner(),
+                                                              TestDataHolder.SUPER_TENANT_ID);
             Assert.assertNotEquals(groupedDevices.size(), 0, "No device found");
             Assert.assertNotNull(groupedDevices.get(0), "Device is null");
             Assert.assertEquals(groupedDevices.get(0).getId(), initialTestDevice.getId(), "Device ids not matched");
@@ -216,14 +164,15 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
     @Test(dependsOnMethods = {"addDeviceToGroupTest"})
     public void removeDeviceFromGroupTest() {
         Device initialTestDevice = TestDataHolder.initialTestDevice;
+        DeviceGroup deviceGroup = getGroupById(groupId);
         try {
             GroupManagementDAOFactory.beginTransaction();
-            groupDAO.removeDevice(groupId, initialTestDevice.getId(), TestDataHolder.SUPER_TENANT_ID);
+            groupDAO.removeDevice(deviceGroup.getName(), deviceGroup.getOwner(), initialTestDevice.getId(), TestDataHolder.SUPER_TENANT_ID);
             GroupManagementDAOFactory.commitTransaction();
-            log.debug("Group added to database.");
+            log.debug("Device added to group.");
         } catch (GroupManagementDAOException e) {
             GroupManagementDAOFactory.rollbackTransaction();
-            String msg = "Error occurred while adding device '" + initialTestDevice.getName() + "'.";
+            String msg = "Error occurred while adding device '" + initialTestDevice.getDeviceIdentifier() + "'.";
             log.error(msg, e);
             Assert.fail(msg, e);
         } catch (TransactionManagementException e) {
@@ -236,14 +185,48 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
     }
 
     @Test(dependsOnMethods = {"removeDeviceFromGroupTest"})
+    public void updateGroupTest() {
+        long time = new Date().getTime();
+        String name = "Test Updated";
+        String desc = "Desc updated";
+        DeviceGroup group = getGroupById(groupId);
+        Assert.assertNotNull(group, "Group is null");
+        group.setDateOfLastUpdate(time);
+        group.setName(name);
+        group.setDescription(desc);
+        try {
+            GroupManagementDAOFactory.beginTransaction();
+            groupDAO.updateGroup(group, TestDataHolder.generateDummyGroupData().getName(),
+                                 TestDataHolder.SUPER_TENANT_ID);
+            GroupManagementDAOFactory.commitTransaction();
+            log.debug("Group updated");
+        } catch (GroupManagementDAOException e) {
+            GroupManagementDAOFactory.rollbackTransaction();
+            String msg = "Error occurred while updating group details.";
+            log.error(msg, e);
+            Assert.fail(msg, e);
+        } catch (TransactionManagementException e) {
+            String msg = "Error occurred while initiating transaction.";
+            log.error(msg, e);
+            Assert.fail(msg, e);
+        } finally {
+            GroupManagementDAOFactory.closeConnection();
+        }
+
+        group = getGroupById(groupId);
+        Assert.assertNotNull(group, "Group is null");
+        Assert.assertEquals(group.getName(), name, "Group name");
+        Assert.assertEquals(group.getDescription(), desc, "Group description");
+        Assert.assertEquals((long) group.getDateOfLastUpdate(), time, "Update time");
+    }
+
+    @Test(dependsOnMethods = {"updateGroupTest"})
     public void deleteGroupTest() {
         DeviceGroup group = getGroupById(groupId);
-        int groupId = 0;
         try {
             Assert.assertNotNull(group, "Group is null");
-            groupId = group.getId();
             GroupManagementDAOFactory.beginTransaction();
-            groupDAO.deleteGroup(groupId, TestDataHolder.SUPER_TENANT_ID);
+            groupDAO.deleteGroup(group.getName(), group.getOwner(), TestDataHolder.SUPER_TENANT_ID);
             GroupManagementDAOFactory.commitTransaction();
             log.debug("Group deleted");
         } catch (GroupManagementDAOException e) {
@@ -259,7 +242,24 @@ public class GroupPersistTests extends BaseDeviceManagementTest {
             GroupManagementDAOFactory.closeConnection();
         }
         group = getGroupById(groupId);
-        Assert.assertNull(group, "Group not deleted");
+        Assert.assertNull(group, "Group is not deleted");
     }
 
+    public DeviceGroup getGroupById(int groupId) {
+        try {
+            GroupManagementDAOFactory.openConnection();
+            return groupDAO.getGroup(groupId, TestDataHolder.SUPER_TENANT_ID);
+        } catch (GroupManagementDAOException e) {
+            String msg = "Error occurred while retrieving group details.";
+            log.error(msg, e);
+            Assert.fail(msg, e);
+        } catch (SQLException e) {
+            String msg = "Error occurred while opening a connection to the data source.";
+            log.error(msg, e);
+            Assert.fail(msg, e);
+        } finally {
+            GroupManagementDAOFactory.closeConnection();
+        }
+        return null;
+    }
 }