Add and update dao layer methods related to hierarchical changes

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

@@ -14,6 +14,23 @@
  * KIND, either express or implied. See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao;
@@ -74,6 +91,15 @@ public interface GroupDAO {
      */
     void deleteAllGroupProperties(int groupId, int tenantId) throws GroupManagementDAOException;
 
+    /**
+     * Remove properties of device groups.
+     *
+     * @param groupIds to be deleted.
+     * @param tenantId of the group.
+     * @throws GroupManagementDAOException on error during deletion of group properties of groups
+     */
+    void deleteAllGroupsProperties(List<Integer> groupIds, int tenantId) throws GroupManagementDAOException;
+
     /**
      * Retrives all properties stored against a group.
      *
@@ -95,6 +121,15 @@ public interface GroupDAO {
     void updateGroup(DeviceGroup deviceGroup, int groupId, int tenantId)
             throws GroupManagementDAOException;
 
+    /**
+     * Update existing Device Groups.
+     *
+     * @param deviceGroups groups to update.
+     * @param tenantId of the group.
+     * @throws GroupManagementDAOException on error during updating of groups
+     */
+    void updateGroups(List<DeviceGroup> deviceGroups, int tenantId) throws GroupManagementDAOException;
+
     /**
      * Delete an existing Device Group.
      *
@@ -104,6 +139,24 @@ public interface GroupDAO {
      */
     void deleteGroup(int groupId, int tenantId) throws GroupManagementDAOException;
 
+    /**
+     * Delete mappings of Device Groups.
+     *
+     * @param groupIds of Device Groups.
+     * @param tenantId  of the group.
+     * @throws GroupManagementDAOException on error during deletion of mappings of groups
+     */
+    void deleteGroupsMapping(List<Integer> groupIds, int tenantId) throws GroupManagementDAOException;
+
+    /**
+     * Delete existing Device Groups.
+     *
+     * @param groupIds of Device Groups.
+     * @param tenantId  of the group.
+     * @throws GroupManagementDAOException on error during deletion of groups
+     */
+    void deleteGroups(List<Integer> groupIds, int tenantId) throws GroupManagementDAOException;
+
     /**
      * Get device group by id.
      *
@@ -114,6 +167,25 @@ public interface GroupDAO {
      */
     DeviceGroup getGroup(int groupId, int tenantId) throws GroupManagementDAOException;
 
+    /**
+     * Get children groups by parent path.
+     *
+     * @param parentPath of parent group.
+     * @param tenantId  of the group.
+     * @return {@link List<DeviceGroup>} list of children device groups
+     * @throws GroupManagementDAOException on error during retrieval of children groups
+     */
+    List<DeviceGroup> getChildrenGroups(String parentPath, int tenantId) throws GroupManagementDAOException;
+
+    /**
+     * Get root groups.
+     *
+     * @param tenantId  of the group.
+     * @return {@link List<DeviceGroup>} list of root device groups
+     * @throws GroupManagementDAOException on error during retrieval of root groups
+     */
+    List<DeviceGroup> getRootGroups(int tenantId) throws GroupManagementDAOException;
+
     /**
      * Get the groups of device with device id provided
      * @param deviceId
@@ -306,10 +378,11 @@ public interface GroupDAO {
      *
      * @param roles    of the group.
      * @param tenantId of user's tenant.
+     * @param parentPath of the group.
      * @return count of device groups.
      * @throws GroupManagementDAOException
      */
-    int getGroupsCount(String[] roles, int tenantId) throws GroupManagementDAOException;
+    int getGroupsCount(String[] roles, int tenantId, String parentPath) throws GroupManagementDAOException;
 
     /**
      * Get all device groups which owned by user.
@@ -336,10 +409,11 @@ public interface GroupDAO {
      *
      * @param username of the owner.
      * @param tenantId of user's tenant.
+     * @param parentPath of the group.
      * @return count of device groups.
      * @throws GroupManagementDAOException
      */
-    int getOwnGroupsCount(String username, int tenantId) throws GroupManagementDAOException;
+    int getOwnGroupsCount(String username, int tenantId, String parentPath) throws GroupManagementDAOException;
 
     /**
      * Get device Ids of devices which are assigned to groups.

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/AbstractGroupDAOImpl.java

@@ -14,18 +14,34 @@
  * KIND, either express or implied. See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao.impl;
 
+import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.apache.solr.common.StringUtils;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.GroupPaginationRequest;
 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.DeviceManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dao.GroupDAO;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOFactory;
@@ -49,6 +65,127 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
 
     private static final Log log = LogFactory.getLog(AbstractGroupDAOImpl.class);
 
+    @Override
+    public List<DeviceGroup> getGroups(GroupPaginationRequest request, int tenantId)
+            throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE TENANT_ID = ?";
+            if (StringUtils.isNotBlank(request.getGroupName())) {
+                sql += " AND UPPER(GROUP_NAME) LIKE ?";
+            }
+            if (StringUtils.isNotBlank(request.getOwner())) {
+                sql += " AND UPPER(OWNER) LIKE ?";
+            }
+            if (StringUtils.isNotBlank(request.getStatus())) {
+                sql += " AND STATUS = ?";
+            }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH LIKE ?";
+            }
+            if (request.getRowCount() != 0) {
+                sql += " LIMIT ? OFFSET ?";
+            }
+
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                int paramIndex = 1;
+                stmt.setInt(paramIndex++, tenantId);
+                if (StringUtils.isNotBlank(request.getGroupName())) {
+                    stmt.setString(paramIndex++, request.getGroupName() + "%");
+                }
+                if (StringUtils.isNotBlank(request.getOwner())) {
+                    stmt.setString(paramIndex++, request.getOwner() + "%");
+                }
+                if (StringUtils.isNotBlank(request.getStatus())) {
+                    stmt.setString(paramIndex++, request.getStatus().toUpperCase());
+                }
+                if (StringUtils.isNotBlank(request.getParentPath())) {
+                    stmt.setString(paramIndex++, request.getParentPath());
+                }
+                if (request.getRowCount() != 0) {
+                    stmt.setInt(paramIndex++, request.getRowCount());
+                    stmt.setInt(paramIndex, request.getStartIndex());
+                }
+                List<DeviceGroup> deviceGroupList = new ArrayList<>();
+                try (ResultSet resultSet = stmt.executeQuery()) {
+                    while (resultSet.next()) {
+                        deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
+                    }
+                }
+                return deviceGroupList;
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while retrieving groups in tenant: " + tenantId;
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
+    @Override
+    public List<DeviceGroup> getGroups(GroupPaginationRequest request, List<Integer> deviceGroupIds,
+            int tenantId) throws GroupManagementDAOException {
+        int deviceGroupIdsCount = deviceGroupIds.size();
+        if (deviceGroupIdsCount == 0) {
+            return new ArrayList<>();
+        }
+
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP WHERE TENANT_ID = ?";
+            if (StringUtils.isNotBlank(request.getGroupName())) {
+                sql += " AND GROUP_NAME LIKE ?";
+            }
+            if (StringUtils.isNotBlank(request.getOwner())) {
+                sql += " AND OWNER LIKE ?";
+            }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH LIKE ?";
+            }
+            sql += " AND ID IN (";
+            for (int i = 0; i < deviceGroupIdsCount; i++) {
+                sql += (deviceGroupIdsCount - 1 != i) ? "?," : "?";
+            }
+            sql += ")";
+            if (request.getRowCount() != 0) {
+                sql += " LIMIT ? OFFSET ?";
+            }
+
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                int paramIndex = 1;
+                stmt.setInt(paramIndex++, tenantId);
+                if (StringUtils.isNotBlank(request.getGroupName())) {
+                    stmt.setString(paramIndex++, request.getGroupName() + "%");
+                }
+                if (StringUtils.isNotBlank(request.getOwner())) {
+                    stmt.setString(paramIndex++, request.getOwner() + "%");
+                }
+                if (StringUtils.isNotBlank(request.getParentPath())) {
+                    stmt.setString(paramIndex++, request.getParentPath());
+                }
+                for (Integer deviceGroupId : deviceGroupIds) {
+                    stmt.setInt(paramIndex++, deviceGroupId);
+                }
+                if (request.getRowCount() != 0) {
+                    stmt.setInt(paramIndex++, request.getRowCount());
+                    stmt.setInt(paramIndex, request.getStartIndex());
+                }
+                List<DeviceGroup> deviceGroupList = new ArrayList<>();
+                try (ResultSet resultSet = stmt.executeQuery()) {
+                    while (resultSet.next()) {
+                        deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
+                    }
+                }
+                return deviceGroupList;
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while retrieving groups of groups IDs " + deviceGroupIds.toString()
+                    +  " in tenant: " + tenantId;
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
     @Override
     public int addGroup(DeviceGroup deviceGroup, int tenantId) throws GroupManagementDAOException {
         PreparedStatement stmt = null;
@@ -59,9 +196,11 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql;
             if (deviceGroup.getStatus() == null || deviceGroup.getStatus().isEmpty()) {
-                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID) VALUES (?, ?, ?, ?)";
+                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID, PARENT_PATH) "
+                        + "VALUES (?, ?, ?, ?, ?)";
             } else {
-                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID, STATUS) VALUES (?, ?, ?, ?, ?)";
+                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID, PARENT_PATH, STATUS) "
+                        + "VALUES (?, ?, ?, ?, ?, ?)";
                 hasStatus = true;
             }
             stmt = conn.prepareStatement(sql, new String[]{"ID"});
@@ -69,8 +208,9 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
             stmt.setString(2, deviceGroup.getName());
             stmt.setString(3, deviceGroup.getOwner());
             stmt.setInt(4, tenantId);
+            stmt.setString(5, deviceGroup.getParentPath());
             if (hasStatus) {
-                stmt.setString(5, deviceGroup.getStatus());
+                stmt.setString(6, deviceGroup.getStatus());
             }
 
             stmt.executeUpdate();
@@ -151,10 +291,12 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql =
-                    "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, OWNER = ? WHERE ID = ? AND TENANT_ID = ?";
+                    "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, OWNER = ?, PARENT_PATH = ? WHERE ID = ? "
+                            + "AND TENANT_ID = ?";
 
             if (deviceGroup.getStatus() != null && !deviceGroup.getStatus().isEmpty()) {
-                sql = "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, OWNER = ?, STATUS = ? WHERE ID = ? AND TENANT_ID = ?";
+                sql = "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, OWNER = ?, PARENT_PATH = ?, STATUS = ? "
+                        + "WHERE ID = ? AND TENANT_ID = ?";
                 hasStatus = true;
             }
             stmt = conn.prepareStatement(sql);
@@ -162,11 +304,12 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
             stmt.setString(paramIndex++, deviceGroup.getDescription());
             stmt.setString(paramIndex++, deviceGroup.getName());
             stmt.setString(paramIndex++, deviceGroup.getOwner());
+            stmt.setString(paramIndex++, deviceGroup.getParentPath());
             if (hasStatus) {
                 stmt.setString(paramIndex++, deviceGroup.getStatus());
             }
             stmt.setInt(paramIndex++, groupId);
-            stmt.setInt(paramIndex++, tenantId);
+            stmt.setInt(paramIndex, tenantId);
             stmt.executeUpdate();
         } catch (SQLException e) {
             throw new GroupManagementDAOException("Error occurred while updating deviceGroup '" +
@@ -176,6 +319,32 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         }
     }
 
+    @Override
+    public void updateGroups(List<DeviceGroup> deviceGroups, int tenantId) throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, OWNER = ?, STATUS = ?, "
+                    + "PARENT_PATH = ? WHERE ID = ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)){
+                for (DeviceGroup deviceGroup : deviceGroups) {
+                    stmt.setString(1, deviceGroup.getDescription());
+                    stmt.setString(2, deviceGroup.getName());
+                    stmt.setString(3, deviceGroup.getOwner());
+                    stmt.setString(4, deviceGroup.getStatus());
+                    stmt.setString(5, deviceGroup.getParentPath());
+                    stmt.setInt(6, deviceGroup.getGroupId());
+                    stmt.setInt(7, tenantId);
+                    stmt.addBatch();
+                }
+                stmt.executeBatch();
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while updating groups as batch";
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
     @Override
     public void deleteGroup(int groupId, int tenantId) throws GroupManagementDAOException {
         Connection conn;
@@ -217,6 +386,64 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         }
     }
 
+    @Override
+    public void deleteGroupsMapping(List<Integer> groupIds, int tenantId) throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "DELETE FROM DM_ROLE_GROUP_MAP WHERE GROUP_ID = ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                for (int groupId : groupIds) {
+                    stmt.setInt(1, groupId);
+                    stmt.setInt(2, tenantId);
+                    stmt.addBatch();
+                }
+                stmt.executeBatch();
+            }
+            sql = "DELETE FROM DM_DEVICE_GROUP_MAP WHERE GROUP_ID = ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                for (int groupId : groupIds) {
+                    stmt.setInt(1, groupId);
+                    stmt.setInt(2, tenantId);
+                    stmt.addBatch();
+                }
+                stmt.executeBatch();
+            }
+            sql = "DELETE FROM DM_DEVICE_GROUP_POLICY WHERE DEVICE_GROUP_ID = ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                for (int groupId : groupIds) {
+                    stmt.setInt(1, groupId);
+                    stmt.setInt(2, tenantId);
+                    stmt.addBatch();
+                }
+                stmt.executeBatch();
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while removing mappings of groups as batches";
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
+    @Override
+    public void deleteGroups(List<Integer> groupIds, int tenantId) throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "DELETE FROM DM_GROUP WHERE ID = ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                for (int groupId : groupIds) {
+                    stmt.setInt(1, groupId);
+                    stmt.setInt(2, tenantId);
+                    stmt.addBatch();
+                }
+                stmt.executeBatch();
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while deleting groups as batches";
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
     public void deleteAllGroupProperties(int groupId, int tenantId)
             throws GroupManagementDAOException {
         PreparedStatement stmt = null;
@@ -235,6 +462,25 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         }
     }
 
+    public void deleteAllGroupsProperties(List<Integer> groupIds, int tenantId) throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "DELETE FROM GROUP_PROPERTIES WHERE GROUP_ID = ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                for (Integer groupId : groupIds) {
+                    stmt.setInt(1, groupId);
+                    stmt.setInt(2, tenantId);
+                    stmt.addBatch();
+                }
+                stmt.executeUpdate();
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while deleting properties of groups as batches";
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
     public Map<String, String> getAllGroupProperties(int groupId, int tenantId)
             throws GroupManagementDAOException {
         PreparedStatement stmt = null;
@@ -266,7 +512,8 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         ResultSet resultSet = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE ID = ? AND TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP WHERE ID = ? "
+                    + "AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, groupId);
             stmt.setInt(2, tenantId);
@@ -284,6 +531,56 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         }
     }
 
+    @Override
+    public List<DeviceGroup> getChildrenGroups(String parentPath, int tenantId) throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE PARENT_PATH LIKE ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                stmt.setString(1, parentPath + "%");
+                stmt.setInt(2, tenantId);
+                List<DeviceGroup> deviceGroupList = new ArrayList<>();
+                try (ResultSet resultSet = stmt.executeQuery()) {
+                    while (resultSet.next()) {
+                        deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
+                    }
+                }
+                return deviceGroupList;
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while retrieving children group having parent path '" + parentPath
+                    + "' in tenant: " + tenantId;
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
+    @Override
+    public List<DeviceGroup> getRootGroups(int tenantId) throws GroupManagementDAOException {
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE PARENT_PATH LIKE ? AND TENANT_ID = ?";
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                stmt.setString(1, "/");
+                stmt.setInt(2, tenantId);
+                List<DeviceGroup> deviceGroupList = new ArrayList<>();
+                try (ResultSet resultSet = stmt.executeQuery()) {
+                    deviceGroupList = new ArrayList<>();
+                    while (resultSet.next()) {
+                        deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
+                    }
+                }
+                return deviceGroupList;
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while retrieving root groups in tenant: " + tenantId;
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
+
     @Override
     public List<DeviceGroup> getGroups(int deviceId, int tenantId) throws GroupManagementDAOException {
         PreparedStatement stmt = null;
@@ -291,7 +588,7 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         List<DeviceGroup> deviceGroupBuilders = new ArrayList<>();
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT G.ID, G.GROUP_NAME, G.DESCRIPTION, G.OWNER, G.STATUS FROM DM_GROUP G " +
+            String sql = "SELECT G.ID, G.GROUP_NAME, G.DESCRIPTION, G.OWNER, G.STATUS, G.PARENT_PATH FROM DM_GROUP G " +
                     "INNER JOIN DM_DEVICE_GROUP_MAP GM ON G.ID = GM.GROUP_ID " +
                     "WHERE GM.DEVICE_ID = ? AND GM.TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
@@ -316,7 +613,8 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         List<DeviceGroup> deviceGroupList = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, tenantId);
             resultSet = stmt.executeQuery();
@@ -389,6 +687,9 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
                 sql += " AND STATUS = ?";
                 hasStatus = true;
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH = ?";
+            }
 
             int paramIndex = 1;
             stmt = conn.prepareStatement(sql);
@@ -397,10 +698,13 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
                 stmt.setString(paramIndex++, groupName + "%");
             }
             if (hasOwner) {
-                stmt.setString(paramIndex, owner + "%");
+                stmt.setString(paramIndex++, owner + "%");
             }
             if (hasStatus) {
-                stmt.setString(paramIndex, request.getStatus());
+                stmt.setString(paramIndex++, request.getStatus());
+            }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                stmt.setString(paramIndex, request.getParentPath());
             }
             resultSet = stmt.executeQuery();
             if (resultSet.next()) {
@@ -422,7 +726,8 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql =
-                    "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE GROUP_NAME = ? AND TENANT_ID = ?";
+                    "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                            + "WHERE GROUP_NAME = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, groupName);
             stmt.setInt(2, tenantId);
@@ -592,7 +897,7 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         List<DeviceGroup> deviceGroupList = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP g, " +
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP g, " +
                     "(SELECT GROUP_ID FROM DM_ROLE_GROUP_MAP WHERE ROLE IN (";
 
             int index = 0;
@@ -658,7 +963,7 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
     }
 
     @Override
-    public int getGroupsCount(String[] roles, int tenantId) throws GroupManagementDAOException {
+    public int getGroupsCount(String[] roles, int tenantId, String parentPath) throws GroupManagementDAOException {
         int rolesCount = roles.length;
         if (rolesCount == 0) {
             return 0;
@@ -672,14 +977,20 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
             for (int i = 0; i < rolesCount; i++) {
                 sql += (rolesCount - 1 != i) ? "?," : "?";
             }
-            sql += ")) gr WHERE g.ID = gr.GROUP_ID AND TENANT_ID = ? GROUP BY g.ID";
+            sql += ")) gr WHERE g.ID = gr.GROUP_ID AND TENANT_ID = ? ";
-
+            if (StringUtils.isNotBlank(parentPath)) {
+                sql += " AND g.PARENT_PATH = ? ";
+            }
+            sql +=  "GROUP BY g.ID";
             stmt = conn.prepareStatement(sql);
             int index = 0;
             while (index++ < rolesCount) {
                 stmt.setString(index, roles[index - 1]);
             }
-            stmt.setInt(index, tenantId);
+            stmt.setInt(index++, tenantId);
+            if (StringUtils.isNotBlank(parentPath)) {
+                stmt.setString(index, parentPath);
+            }
             resultSet = stmt.executeQuery();
             if (resultSet.next()) {
                 return resultSet.getInt("GROUP_COUNT");
@@ -700,7 +1011,8 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         List<DeviceGroup> deviceGroupList = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE OWNER = ? AND TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE OWNER = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, username);
             stmt.setInt(2, tenantId);
@@ -744,15 +1056,21 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
     }
 
     @Override
-    public int getOwnGroupsCount(String username, int tenantId) throws GroupManagementDAOException {
+    public int getOwnGroupsCount(String username, int tenantId, String parentPath) throws GroupManagementDAOException {
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql = "SELECT COUNT(ID) AS GROUP_COUNT FROM DM_GROUP WHERE OWNER = ? AND TENANT_ID = ?";
+            if (StringUtils.isNotBlank(parentPath)) {
+                sql += " AND PARENT_PATH = ?";
+            }
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, username);
             stmt.setInt(2, tenantId);
+            if (StringUtils.isNotBlank(parentPath)) {
+                stmt.setString(3, parentPath);
+            }
             resultSet = stmt.executeQuery();
             if (resultSet.next()) {
                 return resultSet.getInt("GROUP_COUNT");

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

@@ -14,18 +14,32 @@
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao.impl.group;
 
 import org.wso2.carbon.device.mgt.common.Device;
-import org.wso2.carbon.device.mgt.common.GroupPaginationRequest;
-import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOFactory;
 import org.wso2.carbon.device.mgt.core.dao.impl.AbstractGroupDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
-import org.wso2.carbon.device.mgt.core.dao.util.GroupManagementDAOUtil;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
@@ -38,134 +52,6 @@ import java.util.List;
  * This class represents implementation of GroupDAO
  */
 public class GenericGroupDAOImpl extends AbstractGroupDAOImpl {
-    @Override
-    public List<DeviceGroup> getGroups(GroupPaginationRequest request, int tenantId)
-            throws GroupManagementDAOException {
-        PreparedStatement stmt = null;
-        ResultSet resultSet = null;
-        List<DeviceGroup> deviceGroupList = null;
-
-        String groupName = request.getGroupName();
-        boolean hasGroupName = false;
-        String owner = request.getOwner();
-        String status = request.getStatus();
-        boolean hasOwner = false;
-        boolean hasStatus = false;
-        boolean hasLimit = request.getRowCount() != 0;
-
-        try {
-            Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
-            if (groupName != null && !groupName.isEmpty()) {
-                sql += " AND UPPER(GROUP_NAME) LIKE ?";
-                hasGroupName = true;
-            }
-            if (owner != null && !owner.isEmpty()) {
-                sql += " AND UPPER(OWNER) LIKE ?";
-                hasOwner = true;
-            }
-            if (status != null && !status.isEmpty()) {
-                sql += " AND STATUS = ?";
-                hasStatus = true;
-            }
-            if (hasLimit) {
-                sql += " LIMIT ?, ?";
-            }
-
-            int paramIndex = 1;
-            stmt = conn.prepareStatement(sql);
-            stmt.setInt(paramIndex++, tenantId);
-            if (hasGroupName) {
-                stmt.setString(paramIndex++, groupName + "%");
-            }
-            if (hasOwner) {
-                stmt.setString(paramIndex++, owner + "%");
-            }
-            if (hasStatus) {
-                stmt.setString(paramIndex++, status.toUpperCase());
-            }
-            if (hasLimit) {
-                stmt.setInt(paramIndex++, request.getStartIndex());
-                stmt.setInt(paramIndex, request.getRowCount());
-            }
-            resultSet = stmt.executeQuery();
-            deviceGroupList = new ArrayList<>();
-            while (resultSet.next()) {
-                deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
-            }
-        } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while listing all groups in tenant: " + tenantId, e);
-        } finally {
-            GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
-        }
-        return deviceGroupList;
-    }
-
-    @Override
-    public List<DeviceGroup> getGroups(GroupPaginationRequest request, List<Integer> deviceGroupIds,
-                                       int tenantId) throws GroupManagementDAOException {
-        int deviceGroupIdsCount = deviceGroupIds.size();
-        if (deviceGroupIdsCount == 0) {
-            return new ArrayList<>();
-        }
-        PreparedStatement stmt = null;
-        ResultSet resultSet = null;
-        List<DeviceGroup> deviceGroupList = null;
-
-        String groupName = request.getGroupName();
-        boolean hasGroupName = false;
-        String owner = request.getOwner();
-        boolean hasOwner = false;
-        boolean hasLimit = request.getRowCount() != 0;
-
-        try {
-            Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
-            if (groupName != null && !groupName.isEmpty()) {
-                sql += " AND GROUP_NAME LIKE ?";
-                hasGroupName = true;
-            }
-            if (owner != null && !owner.isEmpty()) {
-                sql += " AND OWNER LIKE ?";
-                hasOwner = true;
-            }
-            sql += " AND ID IN (";
-            for (int i = 0; i < deviceGroupIdsCount; i++) {
-                sql += (deviceGroupIdsCount - 1 != i) ? "?," : "?";
-            }
-            sql += ")";
-            if (hasLimit) {
-                sql += " LIMIT ?, ?";
-            }
-
-            int paramIndex = 1;
-            stmt = conn.prepareStatement(sql);
-            stmt.setInt(paramIndex++, tenantId);
-            if (hasGroupName) {
-                stmt.setString(paramIndex++, groupName + "%");
-            }
-            if (hasOwner) {
-                stmt.setString(paramIndex++, owner + "%");
-            }
-            for (Integer deviceGroupId : deviceGroupIds) {
-                stmt.setInt(paramIndex++, deviceGroupId);
-            }
-            if (hasLimit) {
-                stmt.setInt(paramIndex++, request.getStartIndex());
-                stmt.setInt(paramIndex, request.getRowCount());
-            }
-            resultSet = stmt.executeQuery();
-            deviceGroupList = new ArrayList<>();
-            while (resultSet.next()) {
-                deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
-            }
-        } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while listing all groups in tenant: " + tenantId, e);
-        } finally {
-            GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
-        }
-        return deviceGroupList;
-    }
 
     @Override
     public List<Device> getDevices(int groupId, int startIndex, int rowCount, int tenantId)

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

@@ -14,10 +14,28 @@
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao.impl.group;
 
+import org.apache.commons.lang.StringUtils;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.GroupPaginationRequest;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
@@ -56,7 +74,8 @@ public class OracleGroupDAOImpl extends AbstractGroupDAOImpl {
 
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE TENANT_ID = ?";
             if (groupName != null && !groupName.isEmpty()) {
                 sql += " AND GROUP_NAME LIKE ?";
                 hasGroupName = true;
@@ -69,6 +88,9 @@ public class OracleGroupDAOImpl extends AbstractGroupDAOImpl {
                 sql += " AND STATUS = ?";
                 hasStatus = true;
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH LIKE ?";
+            }
             if (hasLimit) {
                 sql += " OFFSET ? ROWS FETCH NEXT ? ROWS ONLY";
             }
@@ -85,6 +107,9 @@ public class OracleGroupDAOImpl extends AbstractGroupDAOImpl {
             if (hasStatus) {
                 stmt.setString(paramIndex++, status.toUpperCase());
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                stmt.setString(paramIndex++, request.getParentPath());
+            }
             if (hasLimit) {
                 stmt.setInt(paramIndex++, request.getStartIndex());
                 stmt.setInt(paramIndex, request.getRowCount());
@@ -121,7 +146,8 @@ public class OracleGroupDAOImpl extends AbstractGroupDAOImpl {
 
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE TENANT_ID = ?";
             if (groupName != null && !groupName.isEmpty()) {
                 sql += " AND GROUP_NAME LIKE ?";
                 hasGroupName = true;
@@ -130,6 +156,9 @@ public class OracleGroupDAOImpl extends AbstractGroupDAOImpl {
                 sql += " AND OWNER LIKE ?";
                 hasOwner = true;
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH LIKE ?";
+            }
             sql += " AND ID IN (";
             for (int i = 0; i < deviceGroupIdsCount; i++) {
                 sql += (deviceGroupIdsCount - 1 != i) ? "?," : "?";
@@ -148,6 +177,9 @@ public class OracleGroupDAOImpl extends AbstractGroupDAOImpl {
             if (hasOwner) {
                 stmt.setString(paramIndex++, owner + "%");
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                stmt.setString(paramIndex++, request.getParentPath());
+            }
             for (Integer deviceGroupId : deviceGroupIds) {
                 stmt.setInt(paramIndex++, deviceGroupId);
             }

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

@@ -14,13 +14,29 @@
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao.impl.group;
 
 import org.apache.solr.common.StringUtils;
 import org.wso2.carbon.device.mgt.common.Device;
-import org.wso2.carbon.device.mgt.common.GroupPaginationRequest;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOException;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOFactory;
@@ -50,10 +66,10 @@ public class PostgreSQLGroupDAOImpl extends AbstractGroupDAOImpl {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql;
             if(StringUtils.isEmpty(deviceGroup.getStatus())) {
-                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID) " +
+                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID, PARENT_PATH) " +
                       "VALUES (?, ?, ?, ?) RETURNING ID";
             } else {
-                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID, STATUS) " +
+                sql = "INSERT INTO DM_GROUP(DESCRIPTION, GROUP_NAME, OWNER, TENANT_ID, PARENT_PATH, STATUS) " +
                       "VALUES (?, ?, ?, ?, ?) RETURNING ID";
                 hasStatus = true;
             }
@@ -62,8 +78,9 @@ public class PostgreSQLGroupDAOImpl extends AbstractGroupDAOImpl {
             stmt.setString(2, deviceGroup.getName());
             stmt.setString(3, deviceGroup.getOwner());
             stmt.setInt(4, tenantId);
+            stmt.setString(5, deviceGroup.getParentPath());
             if(hasStatus) {
-                stmt.setString(5, deviceGroup.getStatus());
+                stmt.setString(6, deviceGroup.getStatus());
             }
             stmt.execute();
             rs = stmt.getGeneratedKeys();
@@ -79,135 +96,6 @@ public class PostgreSQLGroupDAOImpl extends AbstractGroupDAOImpl {
         }
     }
 
-    @Override
-    public List<DeviceGroup> getGroups(GroupPaginationRequest request, int tenantId)
-            throws GroupManagementDAOException {
-        PreparedStatement stmt = null;
-        ResultSet resultSet = null;
-        List<DeviceGroup> deviceGroupList = null;
-
-        String groupName = request.getGroupName();
-        boolean hasGroupName = false;
-        String owner = request.getOwner();
-        String status = request.getStatus();
-        boolean hasOwner = false;
-        boolean hasStatus = false;
-        boolean hasLimit = request.getRowCount() != 0;
-
-        try {
-            Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
-            if (groupName != null && !groupName.isEmpty()) {
-                sql += " AND GROUP_NAME LIKE ?";
-                hasGroupName = true;
-            }
-            if (owner != null && !owner.isEmpty()) {
-                sql += " AND OWNER LIKE ?";
-                hasOwner = true;
-            }
-            if (status != null && !status.isEmpty()) {
-                sql += " AND STATUS = ?";
-                hasStatus = true;
-            }
-            if (hasLimit) {
-                sql += " LIMIT ? OFFSET ?";
-            }
-
-            int paramIndex = 1;
-            stmt = conn.prepareStatement(sql);
-            stmt.setInt(paramIndex++, tenantId);
-            if (hasGroupName) {
-                stmt.setString(paramIndex++, groupName + "%");
-            }
-            if (hasOwner) {
-                stmt.setString(paramIndex++, owner + "%");
-            }
-            if (hasStatus) {
-                stmt.setString(paramIndex++, status.toUpperCase());
-            }
-            if (hasLimit) {
-                stmt.setInt(paramIndex++, request.getRowCount());
-                stmt.setInt(paramIndex, request.getStartIndex());
-            }
-            resultSet = stmt.executeQuery();
-            deviceGroupList = new ArrayList<>();
-            while (resultSet.next()) {
-                deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
-            }
-        } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while listing all groups in tenant: " + tenantId, e);
-        } finally {
-            GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
-        }
-        return deviceGroupList;
-    }
-
-    @Override
-    public List<DeviceGroup> getGroups(GroupPaginationRequest request, List<Integer> deviceGroupIds,
-                                       int tenantId) throws GroupManagementDAOException {
-        int deviceGroupIdsCount = deviceGroupIds.size();
-        if (deviceGroupIdsCount == 0) {
-            return new ArrayList<>();
-        }
-        PreparedStatement stmt = null;
-        ResultSet resultSet = null;
-        List<DeviceGroup> deviceGroupList = null;
-
-        String groupName = request.getGroupName();
-        boolean hasGroupName = false;
-        String owner = request.getOwner();
-        boolean hasOwner = false;
-        boolean hasLimit = request.getRowCount() != 0;
-
-        try {
-            Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
-            if (groupName != null && !groupName.isEmpty()) {
-                sql += " AND GROUP_NAME LIKE ?";
-                hasGroupName = true;
-            }
-            if (owner != null && !owner.isEmpty()) {
-                sql += " AND OWNER LIKE ?";
-                hasOwner = true;
-            }
-            sql += " AND ID IN (";
-            for (int i = 0; i < deviceGroupIdsCount; i++) {
-                sql += (deviceGroupIdsCount - 1 != i) ? "?," : "?";
-            }
-            sql += ")";
-            if (hasLimit) {
-                sql += " LIMIT ? OFFSET ?";
-            }
-
-            int paramIndex = 1;
-            stmt = conn.prepareStatement(sql);
-            stmt.setInt(paramIndex++, tenantId);
-            if (hasGroupName) {
-                stmt.setString(paramIndex++, groupName + "%");
-            }
-            if (hasOwner) {
-                stmt.setString(paramIndex++, owner + "%");
-            }
-            for (Integer deviceGroupId : deviceGroupIds) {
-                stmt.setInt(paramIndex++, deviceGroupId);
-            }
-            if (hasLimit) {
-                stmt.setInt(paramIndex++, request.getRowCount());
-                stmt.setInt(paramIndex, request.getStartIndex());
-            }
-            resultSet = stmt.executeQuery();
-            deviceGroupList = new ArrayList<>();
-            while (resultSet.next()) {
-                deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
-            }
-        } catch (SQLException e) {
-            throw new GroupManagementDAOException("Error occurred while listing all groups in tenant: " + tenantId, e);
-        } finally {
-            GroupManagementDAOUtil.cleanupResources(stmt, resultSet);
-        }
-        return deviceGroupList;
-    }
-
     @Override
     public List<Device> getDevices(int groupId, 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/dao/impl/group/SQLServerGroupDAOImpl.java

@@ -14,10 +14,28 @@
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao.impl.group;
 
+import org.apache.commons.lang.StringUtils;
 import org.wso2.carbon.device.mgt.common.Device;
 import org.wso2.carbon.device.mgt.common.GroupPaginationRequest;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
@@ -56,7 +74,8 @@ public class SQLServerGroupDAOImpl extends AbstractGroupDAOImpl {
 
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE TENANT_ID = ?";
             if (groupName != null && !groupName.isEmpty()) {
                 sql += " AND GROUP_NAME LIKE ?";
                 hasGroupName = true;
@@ -69,6 +88,9 @@ public class SQLServerGroupDAOImpl extends AbstractGroupDAOImpl {
                 sql += " AND STATUS = ?";
                 hasStatus = true;
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH LIKE ?";
+            }
             if (hasLimit) {
                 sql += " ORDER BY ID OFFSET ? ROWS FETCH NEXT ? ROWS ONLY";
             }
@@ -85,6 +107,9 @@ public class SQLServerGroupDAOImpl extends AbstractGroupDAOImpl {
             if (hasStatus) {
                 stmt.setString(paramIndex++, status.toUpperCase());
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                stmt.setString(paramIndex++, request.getParentPath());
+            }
             if (hasLimit) {
                 stmt.setInt(paramIndex++, request.getStartIndex());
                 stmt.setInt(paramIndex, request.getRowCount());
@@ -121,7 +146,8 @@ public class SQLServerGroupDAOImpl extends AbstractGroupDAOImpl {
 
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
-            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS FROM DM_GROUP WHERE TENANT_ID = ?";
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH FROM DM_GROUP "
+                    + "WHERE TENANT_ID = ?";
             if (groupName != null && !groupName.isEmpty()) {
                 sql += " AND GROUP_NAME LIKE ?";
                 hasGroupName = true;
@@ -130,6 +156,9 @@ public class SQLServerGroupDAOImpl extends AbstractGroupDAOImpl {
                 sql += " AND OWNER LIKE ?";
                 hasOwner = true;
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                sql += " AND PARENT_PATH LIKE ?";
+            }
             sql += " AND ID IN (";
             for (int i = 0; i < deviceGroupIdsCount; i++) {
                 sql += (deviceGroupIdsCount - 1 != i) ? "?," : "?";
@@ -148,6 +177,9 @@ public class SQLServerGroupDAOImpl extends AbstractGroupDAOImpl {
             if (hasOwner) {
                 stmt.setString(paramIndex++, owner + "%");
             }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                stmt.setString(paramIndex++, request.getParentPath());
+            }
             for (Integer deviceGroupId : deviceGroupIds) {
                 stmt.setInt(paramIndex++, deviceGroupId);
             }

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

@@ -14,6 +14,22 @@
  * KIND, either express or implied. See the License for the
  * specific language governing permissions and limitations
  * under the License.
+ *
+ * Copyright (c) 2021, Entgra (pvt) Ltd. (https://entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. 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.core.dao.util;
@@ -86,6 +102,7 @@ public final class GroupManagementDAOUtil {
         group.setName(resultSet.getString("GROUP_NAME"));
         group.setOwner(resultSet.getString("OWNER"));
         group.setStatus(resultSet.getString("STATUS"));
+        group.setParentPath(resultSet.getString("PARENT_PATH"));
         return group;
     }