Merge pull request #27 from milanperera/master

Fixing issues of previous PRs

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

@@ -20,7 +20,7 @@ package org.wso2.carbon.device.mgt.common;
 
 import java.io.Serializable;
 
-public class EnrolmentInfo implements Serializable{
+public class EnrolmentInfo implements Serializable {
 
     private static final long serialVersionUID = 1998101712L;
 
@@ -40,7 +40,8 @@ public class EnrolmentInfo implements Serializable{
     private Status status;
     private String owner;
 
-    public EnrolmentInfo() {}
+    public EnrolmentInfo() {
+    }
 
     public EnrolmentInfo(Device device, String owner, OwnerShip ownership, Status status) {
         this.device = device;
@@ -109,19 +110,12 @@ public class EnrolmentInfo implements Serializable{
     public boolean equals(Object obj) {
         if (obj instanceof EnrolmentInfo) {
             EnrolmentInfo tempInfo = (EnrolmentInfo) obj;
-            if (owner != null && ownership != null
+            if (this.owner != null && this.ownership != null) {
-                && tempInfo.getOwner() != null && tempInfo.getOwnership() != null) {
+                if (this.owner.equals(tempInfo.getOwner()) && this.ownership.equals(tempInfo.getOwnership())) {
-
-                if (owner.equals(tempInfo.getOwner()) && ownership.equals(tempInfo.getOwnership())) {
                     return true;
-                } else {
-                    return false;
                 }
-            } else {
-                return false;
             }
-        } else {
-            return false;
         }
+        return false;
     }
 }

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

@@ -31,38 +31,160 @@ import java.util.List;
  */
 public interface DeviceDAO {
 
+    /**
+     * This method is used to add a device.
+     *
+     * @param typeId device type id.
+     * @param device device object.
+     * @param tenantId tenant id.
+     * @return returns the id of the persisted device record.
+     * @throws DeviceManagementDAOException
+     */
     int addDevice(int typeId, Device device, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to update a given device.
+     *
+     * @param typeId device type id.
+     * @param device device object.
+     * @param tenantId tenant id.
+     * @return returns the id of updated device.
+     * @throws DeviceManagementDAOException
+     */
     int updateDevice(int typeId, Device device, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to remove a device.
+     *
+     * @param deviceId id of the device that should be removed.
+     * @param tenantId tenant id.
+     * @return returns the id of removed device.
+     * @throws DeviceManagementDAOException
+     */
     int removeDevice(DeviceIdentifier deviceId, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve a device of a given id.
+     *
+     * @param deviceId device id.
+     * @param tenantId tenant id.
+     * @return returns the device object.
+     * @throws DeviceManagementDAOException
+     */
     Device getDevice(DeviceIdentifier deviceId, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve all the devices of a given tenant.
+     *
+     * @param tenantId tenant id.
+     * @return returns a list of devices.
+     * @throws DeviceManagementDAOException
+     */
     List<Device> getDevices(int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve all the devices of a given tenant and device type.
+     *
+     * @param type device type.
+     * @param tenantId tenant id.
+     * @return returns list of devices.
+     * @throws DeviceManagementDAOException
+     */
     List<Device> getDevices(String type, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve devices of a given user.
+     * @param username user name.
+     * @param tenantId tenant id.
+     * @return returns list of devices.
+     * @throws DeviceManagementDAOException
+     */
     List<Device> getDevicesOfUser(String username, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve the device count of a given tenant.
+     *
+     * @param tenantId tenant id.
+     * @return returns the device count.
+     * @throws DeviceManagementDAOException
+     */
     int getDeviceCount(int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve devices of a given device name.
+     * @param deviceName device name.
+     * @param tenantId tenant id.
+     * @return returns list of devices.
+     * @throws DeviceManagementDAOException
+     */
     List<Device> getDevicesByName(String deviceName, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to add an enrollment information of a given device.
+     *
+     * @param device device object.
+     * @param tenantId tenant id.
+     * @return returns the id of the enrollment.
+     * @throws DeviceManagementDAOException
+     */
     int addEnrollment(Device device, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to set the current enrollment status of given device and user.
+     *
+     * @param deviceId device id.
+     * @param currentOwner current user name.
+     * @param status device status.
+     * @param tenantId tenant id.
+     * @return returns true if success.
+     * @throws DeviceManagementDAOException
+     */
     boolean setEnrolmentStatus(DeviceIdentifier deviceId, String currentOwner, Status status,
                       int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to get the status of current enrollment of a given user and device.
+     *
+     * @param deviceId device id.
+     * @param currentOwner device owner.
+     * @param tenantId tenant id.
+     * @return returns current enrollment status.
+     * @throws DeviceManagementDAOException
+     */
     Status getEnrolmentStatus(DeviceIdentifier deviceId, String currentOwner,
                               int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve current enrollment of a given device and user.
+     *
+     * @param deviceId device id.
+     * @param currentUser user name.
+     * @param tenantId tenant id.
+     * @return returns EnrolmentInfo object.
+     * @throws DeviceManagementDAOException
+     */
     EnrolmentInfo getEnrolment(DeviceIdentifier deviceId, String currentUser,
                                int tenantId) throws DeviceManagementDAOException;
 
-
+    /**
+     * This method is used to retrieve devices of a given enrollment status.
+     *
+     * @param status enrollment status.
+     * @param tenantId tenant id.
+     * @return returns list of devices.
+     * @throws DeviceManagementDAOException
+     */
     List<Device> getDevicesByStatus(EnrolmentInfo.Status status, int tenantId) throws DeviceManagementDAOException;
 
+    /**
+     * This method is used to retrieve the enrollment id of a given device and status.
+     *
+     * @param deviceId device id.
+     * @param status enrollment status.
+     * @param tenantId tenant id.
+     * @return returns the id of current enrollment.
+     * @throws DeviceManagementDAOException
+     */
     int getEnrolmentByStatus(DeviceIdentifier deviceId, Status status,
                                     int tenantId) throws DeviceManagementDAOException;
 }

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

@@ -42,9 +42,8 @@ public class DeviceDAOImpl implements DeviceDAO {
         int deviceId = -1;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "INSERT INTO DM_DEVICE(DESCRIPTION, NAME, DEVICE_TYPE_ID, DEVICE_IDENTIFICATION, TENANT_ID) " +
-                    "INSERT INTO DM_DEVICE(DESCRIPTION, NAME, DEVICE_TYPE_ID, DEVICE_IDENTIFICATION, TENANT_ID) " +
+                    "VALUES (?, ?, ?, ?, ?)";
-                            "VALUES (?, ?, ?, ?, ?)";
             stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
             stmt.setString(1, device.getDescription());
             stmt.setString(2, device.getName());
@@ -74,9 +73,8 @@ public class DeviceDAOImpl implements DeviceDAO {
         int deviceId = -1;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "UPDATE DM_DEVICE SET DESCRIPTION = ?, NAME = ? WHERE DEVICE_IDENTIFICATION = ? AND " +
-                    "UPDATE DM_DEVICE SET DESCRIPTION = ?, NAME = ? WHERE DEVICE_IDENTIFICATION = ? AND " +
+                    "DEVICE_TYPE_ID = ? AND TENANT_ID = ?";
-                            "DEVICE_TYPE_ID = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
             stmt.setString(1, device.getDescription());
             stmt.setString(2, device.getName());
@@ -111,13 +109,12 @@ public class DeviceDAOImpl implements DeviceDAO {
         Device device = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
-                    "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, d1.DEVICE_IDENTIFICATION, " +
+                    "d1.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                            "e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID " +
+                    "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT d.ID, d.DESCRIPTION, d.NAME, " +
-                            "FROM DM_ENROLMENT e, (SELECT d.ID, d.DESCRIPTION, d.NAME, " +
+                    "t.NAME AS DEVICE_TYPE, d.DEVICE_IDENTIFICATION FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE " +
-                            "t.NAME AS DEVICE_TYPE, d.DEVICE_IDENTIFICATION FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE " +
+                    "t.NAME = ? AND d.DEVICE_IDENTIFICATION = ? AND d.TENANT_ID = ?) d1 WHERE d1.ID = e.DEVICE_ID " +
-                            "t.NAME = ? AND d.DEVICE_IDENTIFICATION = ? AND d.TENANT_ID = ?) d1 WHERE d1.ID = e.DEVICE_ID " +
+                    "AND TENANT_ID = ?";
-                            "AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, deviceId.getType());
             stmt.setString(2, deviceId.getId());
@@ -144,12 +141,12 @@ public class DeviceDAOImpl implements DeviceDAO {
         List<Device> devices = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT d1.DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
-                    "SELECT d1.DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, d1.DEVICE_IDENTIFICATION, " +
+                    "d1.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                            "e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID " +
+                    "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT d.ID AS DEVICE_ID, " +
-                            "FROM DM_ENROLMENT e, (SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME," +
+                    "d.DESCRIPTION, d.NAME, d.DEVICE_IDENTIFICATION, t.NAME AS DEVICE_TYPE FROM DM_DEVICE d, " +
-                            "d.DEVICE_IDENTIFICATION, t.NAME AS DEVICE_TYPE FROM DM_DEVICE d, DM_DEVICE_TYPE t " +
+                    "DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID AND d.TENANT_ID = ?) d1 " +
-                            "WHERE d.DEVICE_TYPE_ID = t.ID AND d.TENANT_ID = ?) d1 WHERE d1.DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
+                    "WHERE d1.DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, tenantId);
             stmt.setInt(2, tenantId);
@@ -176,12 +173,12 @@ public class DeviceDAOImpl implements DeviceDAO {
         List<Device> devices = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
-                    "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, d1.DEVICE_IDENTIFICATION, " +
+                    "d1.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                            "e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID " +
+                    "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT d.ID, d.DESCRIPTION, " +
-                            "FROM DM_ENROLMENT e, (SELECT d.ID, d.DESCRIPTION, d.NAME, d.DEVICE_IDENTIFICATION,  t.NAME " +
+                    "d.NAME, d.DEVICE_IDENTIFICATION, t.NAME AS DEVICE_TYPE FROM DM_DEVICE d, " +
-                            "AS DEVICE_TYPE FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE DEVICE_TYPE_ID = t.ID AND t.NAME = ? " +
+                    "DM_DEVICE_TYPE t WHERE DEVICE_TYPE_ID = t.ID AND t.NAME = ? " +
-                            "AND d.TENANT_ID = ?) d1 WHERE DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
+                    "AND d.TENANT_ID = ?) d1 WHERE d1.ID = e.DEVICE_ID AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, type);
             stmt.setInt(2, tenantId);
@@ -207,13 +204,12 @@ public class DeviceDAOImpl implements DeviceDAO {
         List<Device> devices = new ArrayList<>();
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
-                    "SELECT d1.ID AS 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, " +
-                            "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 t.NAME AS DEVICE_TYPE, " +
-                            "e.DATE_OF_ENROLMENT , e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT t.NAME AS DEVICE_TYPE, d.ID, d.DESCRIPTION, " +
+                    "d.ID, d.DESCRIPTION, d.NAME, d.DEVICE_IDENTIFICATION FROM DM_DEVICE d, DM_DEVICE_TYPE t " +
-                            "d.NAME, d.DEVICE_IDENTIFICATION FROM DM_DEVICE d, DM_DEVICE_TYPE t " +
+                    "WHERE d.DEVICE_TYPE_ID = t.ID AND d.TENANT_ID = ?) d1 " +
-                            "WHERE d.DEVICE_TYPE_ID = t.ID AND d.TENANT_ID = ?) d1 " +
+                    "WHERE DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ? AND e.OWNER = ?";
-                            "WHERE DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ? AND e.OWNER = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, tenantId);
             stmt.setInt(2, tenantId);
@@ -281,12 +277,12 @@ public class DeviceDAOImpl implements DeviceDAO {
         List<Device> devices = new ArrayList<>();
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, " +
-                    "SELECT d1.ID AS DEVICE_ID, d1.DESCRIPTION, d1.NAME AS DEVICE_NAME, d1.DEVICE_TYPE, d1.DEVICE_IDENTIFICATION, " +
+                    "d1.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                            "e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID " +
+                    "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e, (SELECT d.ID, d.NAME, " +
-                            "FROM DM_ENROLMENT e, (SELECT d.ID, d.NAME, d.DESCRIPTION, t.NAME AS DEVICE_TYPE, " +
+                    "d.DESCRIPTION, t.NAME AS DEVICE_TYPE, d.DEVICE_IDENTIFICATION FROM DM_DEVICE d, " +
-                            "d.DEVICE_IDENTIFICATION FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID " +
+                    "DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID AND d.NAME LIKE ? AND d.TENANT_ID = ?) d1 " +
-                            "AND d.NAME LIKE ? AND d.TENANT_ID = ?) d1 WHERE DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
+                    "WHERE DEVICE_ID = e.DEVICE_ID AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, deviceName + "%");
             stmt.setInt(2, tenantId);
@@ -314,9 +310,8 @@ public class DeviceDAOImpl implements DeviceDAO {
         int enrolmentId = -1;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "INSERT INTO DM_ENROLMENT(DEVICE_ID, OWNER, OWNERSHIP, STATUS,DATE_OF_ENROLMENT, " +
-                    "INSERT INTO DM_ENROLMENT(DEVICE_ID, OWNER, OWNERSHIP, STATUS,DATE_OF_ENROLMENT, DATE_OF_LAST_UPDATE, " +
+                    "DATE_OF_LAST_UPDATE, TENANT_ID) VALUES(?, ?, ?, ?, ?, ?, ?)";
-                            "TENANT_ID) VALUES(?, ?, ?, ?, ?, ?, ?)";
             stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
             stmt.setInt(1, device.getId());
             stmt.setString(2, device.getEnrolmentInfo().getOwner());
@@ -346,10 +341,9 @@ public class DeviceDAOImpl implements DeviceDAO {
         PreparedStatement stmt = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "UPDATE DM_ENROLMENT SET STATUS = ? WHERE DEVICE_ID = (SELECT d.ID FROM DM_DEVICE d, " +
-                    "UPDATE DM_ENROLMENT SET STATUS = ? WHERE DEVICE_ID = (SELECT d.ID FROM DM_DEVICE d, DM_DEVICE_TYPE t " +
+                    "DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID AND d.DEVICE_IDENTIFICATION = ? " +
-                            "WHERE d.DEVICE_TYPE_ID = t.ID AND d.DEVICE_IDENTIFICATION = ? AND t.NAME = ? AND d.TENANT_ID = ?) " +
+                    "AND t.NAME = ? AND d.TENANT_ID = ?) AND OWNER = ? AND TENANT_ID = ?";
-                            "AND OWNER = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, status.toString());
             stmt.setString(2, deviceId.getId());
@@ -375,10 +369,9 @@ public class DeviceDAOImpl implements DeviceDAO {
         Status status = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT STATUS FROM DM_ENROLMENT WHERE DEVICE_ID = (SELECT d.ID FROM DM_DEVICE d, " +
-                    "SELECT STATUS FROM DM_ENROLMENT WHERE DEVICE_ID = " +
+                    "DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID AND d.DEVICE_IDENTIFICATION = ? " +
-                            "(SELECT d.ID FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID AND " +
+                    "AND t.NAME = ? AND d.TENANT_ID = ?) AND OWNER = ? AND TENANT_ID = ?";
-                            "d.DEVICE_IDENTIFICATION = ? AND t.NAME = ? AND d.TENANT_ID = ?) AND OWNER = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, deviceId.getId());
             stmt.setString(2, deviceId.getType());
@@ -407,11 +400,11 @@ public class DeviceDAOImpl implements DeviceDAO {
         EnrolmentInfo enrolmentInfo = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT ID AS ENROLMENT_ID, DEVICE_ID, OWNER, OWNERSHIP, STATUS, DATE_OF_ENROLMENT, " +
-                    "SELECT ID AS ENROLMENT_ID, DEVICE_ID, OWNER, OWNERSHIP, STATUS, DATE_OF_ENROLMENT, DATE_OF_LAST_UPDATE, " +
+                    "DATE_OF_LAST_UPDATE, TENANT_ID FROM DM_ENROLMENT WHERE DEVICE_ID = (SELECT d.ID " +
-                            "TENANT_ID FROM DM_ENROLMENT WHERE DEVICE_ID = (SELECT d.ID FROM DM_DEVICE d, DM_DEVICE_TYPE t " +
+                    "FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID " +
-                            "WHERE d.DEVICE_TYPE_ID = t.ID AND d.DEVICE_IDENTIFICATION = ? AND t.NAME = ? AND d.TENANT_ID = ?) " +
+                    "AND d.DEVICE_IDENTIFICATION = ? AND t.NAME = ? AND d.TENANT_ID = ?) " +
-                            "AND OWNER = ? AND TENANT_ID = ?";
+                    "AND OWNER = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, deviceId.getId());
             stmt.setString(2, deviceId.getType());
@@ -438,10 +431,10 @@ public class DeviceDAOImpl implements DeviceDAO {
         ResultSet rs = null;
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT ID AS ENROLMENT_ID FROM DM_ENROLMENT WHERE DEVICE_ID = (SELECT d.ID " +
-                    "SELECT ID AS ENROLMENT_ID FROM DM_ENROLMENT WHERE DEVICE_ID = (SELECT d.ID FROM DM_DEVICE d, " +
+                    "FROM DM_DEVICE d, DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID " +
-                            "DM_DEVICE_TYPE t WHERE d.DEVICE_TYPE_ID = t.ID AND d.DEVICE_IDENTIFICATION = ? AND t.NAME = ? " +
+                    "AND d.DEVICE_IDENTIFICATION = ? AND t.NAME = ? AND d.TENANT_ID = ?) " +
-                            "AND d.TENANT_ID = ?) AND STATUS = ? AND TENANT_ID = ?";
+                    "AND STATUS = ? AND TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, deviceId.getId());
             stmt.setString(2, deviceId.getType());
@@ -491,13 +484,12 @@ public class DeviceDAOImpl implements DeviceDAO {
         List<Device> devices = new ArrayList<>();
         try {
             conn = this.getConnection();
-            String sql =
+            String sql = "SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME AS DEVICE_NAME, t.NAME AS DEVICE_TYPE, " +
-                    "SELECT d.ID AS DEVICE_ID, d.DESCRIPTION, d.NAME AS DEVICE_NAME, t.NAME AS DEVICE_TYPE, " +
+                    "d.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
-                            "d.DEVICE_IDENTIFICATION, e.OWNER, e.OWNERSHIP, e.STATUS, e.DATE_OF_LAST_UPDATE, " +
+                    "e.DATE_OF_ENROLMENT FROM (SELECT e.ID, e.DEVICE_ID, e.OWNER, e.OWNERSHIP, e.STATUS, " +
-                            "e.DATE_OF_ENROLMENT, e.ID AS ENROLMENT_ID FROM (SELECT e.ID, e.DEVICE_ID, e.OWNER, e.OWNERSHIP, e.STATUS, " +
+                    "e.DATE_OF_ENROLMENT, e.DATE_OF_LAST_UPDATE, e.ID AS ENROLMENT_ID FROM DM_ENROLMENT e " +
-                            "e.DATE_OF_ENROLMENT, e.DATE_OF_LAST_UPDATE FROM DM_ENROLMENT e WHERE TENANT_ID = ? " +
+                    "WHERE TENANT_ID = ? AND STATUS = ?) e, DM_DEVICE d, DM_DEVICE_TYPE t " +
-                            "AND STATUS = ?) e, DM_DEVICE d, DM_DEVICE_TYPE t WHERE DEVICE_ID = e.DEVICE_ID " +
+                    "WHERE DEVICE_ID = e.DEVICE_ID AND d.DEVICE_TYPE_ID = t.ID AND d.TENANT_ID = ?";
-                            "AND d.DEVICE_TYPE_ID = t.ID AND d.TENANT_ID = ?";
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, tenantId);
             stmt.setString(2, status.toString());

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

@@ -120,9 +120,11 @@ public class CommandOperationDAOImpl extends OperationDAOImpl {
         List<CommandOperation> commandOperations = new ArrayList<>();
         try {
             Connection conn = OperationManagementDAOFactory.getConnection();
-            String sql = "SELECT o.ID, co1.ENABLED, co1.STATUS, o.TYPE, o.CREATED_TIMESTAMP, o.RECEIVED_TIMESTAMP, o.OPERATION_CODE FROM (SELECT co.OPERATION_ID, co.ENABLED, dm.STATUS FROM DM_COMMAND_OPERATION co " +
+            String sql = "SELECT o.ID, co1.ENABLED, co1.STATUS, o.TYPE, o.CREATED_TIMESTAMP, o.RECEIVED_TIMESTAMP, " +
-                    "INNER JOIN (SELECT ENROLMENT_ID, OPERATION_ID, STATUS FROM DM_ENROLMENT_OPERATION_MAPPING WHERE ENROLMENT_ID = ? " +
+                    "o.OPERATION_CODE FROM (SELECT co.OPERATION_ID, co.ENABLED, dm.STATUS " +
-                    "AND STATUS = ?) dm ON dm.OPERATION_ID = co.OPERATION_ID) co1 INNER JOIN DM_OPERATION o ON co1.OPERATION_ID = o.ID";
+                    "FROM DM_COMMAND_OPERATION co INNER JOIN (SELECT ENROLMENT_ID, OPERATION_ID, STATUS " +
+                    "FROM DM_ENROLMENT_OPERATION_MAPPING WHERE ENROLMENT_ID = ? AND STATUS = ?) dm " +
+                    "ON dm.OPERATION_ID = co.OPERATION_ID) co1 INNER JOIN DM_OPERATION o ON co1.OPERATION_ID = o.ID";
 
             stmt = conn.prepareStatement(sql);
             stmt.setInt(1, enrolmentId);

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

@@ -93,7 +93,7 @@ public interface DeviceManagementProviderService extends OperationManager {
     void updateDeviceEnrolmentInfo(Device device, EnrolmentInfo.Status active) throws DeviceManagementException;
 
     /**
-     * This method is used to retrieve list of devices based on the device status
+     * This method is used to retrieve list of devices based on the device status.
      *
      * @param status Device status
      * @return List of devices

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

@@ -414,7 +414,7 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
                             EmailConstants.EnrolmentEmailConstants.ENCODED_SCHEME));
             messageBody = messageBody.trim() + System.getProperty("line.separator") +
                     System.getProperty("line.separator") + url.replaceAll("\\{"
-                    + EmailConstants.EnrolmentEmailConstants.DOWNLOAD_URL + "\\}",
+                            + EmailConstants.EnrolmentEmailConstants.DOWNLOAD_URL + "\\}",
                     URLDecoder.decode(emailMessageProperties.getEnrolmentUrl(),
                             EmailConstants.EnrolmentEmailConstants.ENCODED_SCHEME));
 
@@ -469,8 +469,8 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
                             EmailConstants.EnrolmentEmailConstants.ENCODED_SCHEME));
 
             messageBody = messageBody.trim().replaceAll("\\{" + EmailConstants.EnrolmentEmailConstants
-                    .USERNAME
+                            .USERNAME
-                    + "\\}",
+                            + "\\}",
                     URLEncoder.encode(emailMessageProperties.getUserName(), EmailConstants.EnrolmentEmailConstants
                             .ENCODED_SCHEME));
 
@@ -479,7 +479,7 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
                             .ENCODED_SCHEME));
 
             messageBody = messageBody + System.getProperty("line.separator") + url.replaceAll("\\{"
-                    + EmailConstants.EnrolmentEmailConstants.DOWNLOAD_URL + "\\}",
+                            + EmailConstants.EnrolmentEmailConstants.DOWNLOAD_URL + "\\}",
                     URLDecoder.decode(emailMessageProperties.getEnrolmentUrl(),
                             EmailConstants.EnrolmentEmailConstants.ENCODED_SCHEME));
 
@@ -748,10 +748,8 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
                 DeviceManagementDAOFactory.closeConnection();
             }
             for (Device device : userDevices) {
-                Device dmsDevice =
+                Device dmsDevice = this.getDeviceManager(device.getType()).
-                        this.getPluginRepository().getDeviceManagementService(
+                        getDevice(new DeviceIdentifier(device.getDeviceIdentifier(), device.getType()));
-                                device.getType()).getDeviceManager().getDevice(
-                                new DeviceIdentifier(device.getDeviceIdentifier(), device.getType()));
                 if (dmsDevice != null) {
                     device.setFeatures(dmsDevice.getFeatures());
                     device.setProperties(dmsDevice.getProperties());
@@ -792,10 +790,8 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
             DeviceManagementDAOFactory.closeConnection();
         }
         for (Device device : allDevices) {
-            Device dmsDevice =
+            Device dmsDevice = this.getDeviceManager(device.getType()).
-                    this.getPluginRepository().getDeviceManagementService(
+                    getDevice(new DeviceIdentifier(device.getDeviceIdentifier(), device.getType()));
-                            device.getType()).getDeviceManager().getDevice(
-                            new DeviceIdentifier(device.getDeviceIdentifier(), device.getType()));
             if (dmsDevice != null) {
                 device.setFeatures(dmsDevice.getFeatures());
                 device.setProperties(dmsDevice.getProperties());
@@ -865,10 +861,8 @@ public class DeviceManagementProviderServiceImpl implements DeviceManagementProv
         }
 
         for (Device device : allDevices) {
-            Device dmsDevice =
+            Device dmsDevice = this.getDeviceManager(device.getType()).
-                    this.getPluginRepository().getDeviceManagementService(
+                    getDevice(new DeviceIdentifier(device.getDeviceIdentifier(), device.getType()));
-                            device.getType()).getDeviceManager().getDevice(
-                            new DeviceIdentifier(device.getDeviceIdentifier(), device.getType()));
             if (dmsDevice != null) {
                 device.setFeatures(dmsDevice.getFeatures());
                 device.setProperties(dmsDevice.getProperties());

components/oauth-extensions/dynamic-client-manager/src/main/java/org/wso2/carbon/identity/oauth/extension/DynamicClientRegistrationUtil.java

@@ -128,6 +128,10 @@ public class DynamicClientRegistrationUtil {
             serviceProvider.setDescription("Service Provider for application " + applicationName);
 
             ApplicationManagementService appMgtService = ApplicationManagementService.getInstance();
+            if (appMgtService == null) {
+                throw new IllegalStateException("Error occurred while retrieving Application Management" +
+                        "Service");
+            }
             appMgtService.createApplication(serviceProvider);
 
             ServiceProvider createdServiceProvider = appMgtService.getApplication(applicationName);
@@ -228,6 +232,11 @@ public class DynamicClientRegistrationUtil {
             oAuthAdminService.removeOAuthApplicationData(consumerKey);
 
             ApplicationManagementService appMgtService = ApplicationManagementService.getInstance();
+
+            if (appMgtService == null) {
+                throw new IllegalStateException("Error occurred while retrieving Application Management" +
+                        "Service");
+            }
             ServiceProvider createdServiceProvider = appMgtService.getApplication(applicationName);
 
             if (createdServiceProvider == null) {

components/oauth-extensions/dynamic-client-manager/src/main/java/org/wso2/carbon/identity/oauth/extension/RegistrationService.java

@@ -45,9 +45,24 @@ public interface RegistrationService {
         }
     }
 
+    /**
+     * This method is used to register an Oauth application.
+     *
+     * @param profile contains the necessary attributes that are
+     *                needed in order to register an app.
+     * @return Status 200 if success including consumerKey and consumerSecret.
+     */
     @POST
     Response register(RegistrationProfile profile);
 
+    /**
+     * This method is used to remove already registered Oauth application.
+     *
+     * @param applicationName name of the application.
+     * @param userId name of the application owner.
+     * @param consumerKey provided consumerKey for the registered application.
+     * @return Status 200 if success.
+     */
     @DELETE
     public Response unregister(@QueryParam("applicationName") String applicationName,
                                @QueryParam("userId") String userId,

components/oauth-extensions/dynamic-client-manager/src/main/java/org/wso2/carbon/identity/oauth/extension/profile/RegistrationProfile.java

@@ -164,6 +164,4 @@ public class RegistrationProfile {
     public void setGrantType(String grantType) {
         this.grantType = grantType;
     }
-
-
 }

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/dao/FeatureDAO.java

@@ -25,34 +25,102 @@ import org.wso2.carbon.policy.mgt.common.ProfileFeature;
 
 import java.util.List;
 
+/**
+ * This interface represents the key operations related to profile features of device policies.
+ */
 public interface FeatureDAO {
 
-/*    Feature addFeature(Feature feature) throws FeatureManagerDAOException;
+    /**
-
+     * This method is used to add a feature related to given profile.
-    List<Feature> addFeatures(List<Feature> feature) throws FeatureManagerDAOException;
+     *
-
+     * @param feature consists of device specific configurations.
-    Feature updateFeature(Feature feature) throws FeatureManagerDAOException;*/
+     * @param profileId id of the profile.
-
+     * @return returns ProfileFeature object.
+     * @throws FeatureManagerDAOException
+     */
     ProfileFeature addProfileFeature(ProfileFeature feature, int profileId) throws FeatureManagerDAOException;
 
+    /**
+     * This method is used to update a feature related to given profile.
+     * @param feature consists of device specific configurations.
+     * @param profileId id of the profile.
+     * @return returns updated ProfileFeature object.
+     * @throws FeatureManagerDAOException
+     */
     ProfileFeature updateProfileFeature(ProfileFeature feature, int profileId) throws FeatureManagerDAOException;
 
+    /**
+     * This method is used to add set of features to a given profile.
+     *
+     * @param features consists of device specific configurations.
+     * @param profileId id of the profile.
+     * @return returns list of ProfileFeature objects.
+     * @throws FeatureManagerDAOException
+     */
     List<ProfileFeature> addProfileFeatures(List<ProfileFeature> features, int profileId) throws
             FeatureManagerDAOException;
 
+    /**
+     * This method is used to update set of features to a given profile.
+     *
+     * @param features consists of device specific configurations.
+     * @param profileId id of the profile.
+     * @return returns list of ProfileFeature objects.
+     * @throws FeatureManagerDAOException
+     */
     List<ProfileFeature> updateProfileFeatures(List<ProfileFeature> features, int profileId) throws
             FeatureManagerDAOException;
 
+    /**
+     * This method is used to retrieve all the profile features.
+     *
+     * @return returns list of ProfileFeature objects.
+     * @throws FeatureManagerDAOException
+     */
     List<ProfileFeature> getAllProfileFeatures() throws FeatureManagerDAOException;
 
+    /**
+     * This method is used to retrieve all the profile features based on device type.
+     *
+     * @return returns list of ProfileFeature objects.
+     * @throws FeatureManagerDAOException
+     */
     List<Feature> getAllFeatures(String deviceType) throws FeatureManagerDAOException;
 
-    List<ProfileFeature> getFeaturesForProfile(int ProfileId) throws FeatureManagerDAOException;
+    /**
-
+     * This method is used to retrieve all the profile features of given profile.
+     *
+     * @param profileId id of the profile.
+     * @return returns list of ProfileFeature objects.
+     * @throws FeatureManagerDAOException
+     */
+    List<ProfileFeature> getFeaturesForProfile(int profileId) throws FeatureManagerDAOException;
+
+    /**
+     * This method is used remove a feature.
+     *
+     * @param featureId id of the removing feature.
+     * @return returns true if success.
+     * @throws FeatureManagerDAOException
+     */
     boolean deleteFeature(int featureId) throws FeatureManagerDAOException;
 
+    /**
+     * This method is used to remove set of features of given profile.
+     *
+     * @param profile that contains features to be removed.
+     * @return returns true if success.
+     * @throws FeatureManagerDAOException
+     */
     boolean deleteFeaturesOfProfile(Profile profile) throws FeatureManagerDAOException;
 
+    /**
+     * This method is used to remove set of features of given profile id.
+     *
+     * @param profileId id of the profile.
+     * @return returns true if success.
+     * @throws FeatureManagerDAOException
+     */
     boolean deleteFeaturesOfProfile(int profileId) throws FeatureManagerDAOException;
 
 }

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/dao/ProfileDAO.java

@@ -24,20 +24,67 @@ import org.wso2.carbon.policy.mgt.common.Profile;
 
 import java.util.List;
 
+/**
+ * This interface represents the key operations related to policy profile.
+ */
 public interface ProfileDAO {
 
+    /**
+     * This method is used to add a profile.
+     *
+     * @param profile profile object.
+     * @return returns added profile object.
+     * @throws ProfileManagerDAOException
+     */
     Profile addProfile(Profile profile) throws ProfileManagerDAOException;
 
+    /**
+     * This method is used to update a profile
+     * @param profile profile object.
+     * @return returns updated profile object.
+     * @throws ProfileManagerDAOException
+     */
     Profile updateProfile(Profile profile) throws ProfileManagerDAOException;
 
+    /**
+     * This method is used to remove a profile.
+     * @param profile profile object
+     * @return returns true if success.
+     * @throws ProfileManagerDAOException
+     */
     boolean deleteProfile(Profile profile) throws ProfileManagerDAOException;
 
+    /**
+     * This method is used to remove a profile of given policy id.
+     * @param policyId policy id.
+     * @return returns true if success.
+     * @throws ProfileManagerDAOException
+     */
     boolean deleteProfile(int policyId) throws ProfileManagerDAOException;
 
-    Profile getProfiles(int profileId) throws ProfileManagerDAOException;
+    /**
+     * This method is used to retrieve a profile when id is given.
+     * @param profileId profile id.
+     * @return returns profile object.
+     * @throws ProfileManagerDAOException
+     */
+    Profile getProfile(int profileId) throws ProfileManagerDAOException;
 
+    /**
+     * This method is used to retrieve all the profiles.
+     *
+     * @return returns a list of profile objects.
+     * @throws ProfileManagerDAOException
+     */
     List<Profile> getAllProfiles() throws ProfileManagerDAOException;
 
+    /**
+     * This method is used to retrieve all the profile of given device type.
+     *
+     * @param deviceType device type object.
+     * @return retruns list of profiles.
+     * @throws ProfileManagerDAOException
+     */
     List<Profile> getProfilesOfDeviceType(DeviceType deviceType) throws ProfileManagerDAOException;
 
 }

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/dao/impl/FeatureDAOImpl.java

@@ -43,115 +43,6 @@ public class FeatureDAOImpl implements FeatureDAO {
 
     private static final Log log = LogFactory.getLog(FeatureDAOImpl.class);
 
-
-/*    @Override
-    public Feature addFeature(Feature feature) throws FeatureManagerDAOException {
-
-        Connection conn;
-        PreparedStatement stmt = null;
-        ResultSet generatedKeys = null;
-
-        try {
-            conn = this.getConnection();
-            String query = "INSERT INTO DM_FEATURES (NAME, CODE, DESCRIPTION) VALUES (?, ?, ?)";
-            stmt = conn.prepareStatement(query, PreparedStatement.RETURN_GENERATED_KEYS);
-            stmt.setString(1, feature.getName());
-            stmt.setString(2, feature.getCode());
-            stmt.setString(3, feature.getDescription());
-            int affectedRows = stmt.executeUpdate();
-
-            if (log.isDebugEnabled()) {
-                log.debug(affectedRows + " feature is added.");
-            }
-            generatedKeys = stmt.getGeneratedKeys();
-
-            while (generatedKeys.next()) {
-                feature.setId(generatedKeys.getInt(1));
-            }
-
-        } catch (SQLException e) {
-            String msg = "Error occurred while adding feature to the database.";
-            log.error(msg, e);
-            throw new FeatureManagerDAOException(msg, e);
-        } finally {
-            PolicyManagementDAOUtil.cleanupResources(stmt, generatedKeys);
-        }
-        return feature;
-    }*/
-
-  /*  @Override
-    public List<Feature> addFeatures(List<Feature> features) throws FeatureManagerDAOException {
-
-        Connection conn;
-        PreparedStatement stmt = null;
-        ResultSet generatedKeys = null;
-        List<Feature> featureList = new ArrayList<Feature>();
-
-        try {
-            conn = this.getConnection();
-            String query = "INSERT INTO DM_FEATURES (NAME, CODE, DESCRIPTION) VALUES (?, ?, ?)";
-            stmt = conn.prepareStatement(query, PreparedStatement.RETURN_GENERATED_KEYS);
-
-            for (Feature feature : features) {
-                stmt.setString(1, feature.getName());
-                stmt.setString(2, feature.getCode());
-                stmt.setString(3, feature.getDescription());
-                stmt.addBatch();
-            }
-
-            int[] affectedRows = stmt.executeBatch();
-
-            generatedKeys = stmt.getGeneratedKeys();
-
-            if (log.isDebugEnabled()) {
-                log.debug(affectedRows.length + " features are added to the database.");
-            }
-            generatedKeys = stmt.getGeneratedKeys();
-            int i = 0;
-
-            while (generatedKeys.next()) {
-                features.get(i).setId(generatedKeys.getInt(1));
-                i++;
-            }
-        } catch (SQLException e) {
-            String msg = "Error occurred while adding feature to the database.";
-            log.error(msg, e);
-            throw new FeatureManagerDAOException(msg, e);
-        } finally {
-            PolicyManagementDAOUtil.cleanupResources(stmt, generatedKeys);
-        }
-        return featureList;
-    }*/
-
-
-  /*  @Override
-    public Feature updateFeature(Feature feature) throws FeatureManagerDAOException {
-
-        Connection conn;
-        PreparedStatement stmt = null;
-
-        try {
-            conn = this.getConnection();
-            String query = "UPDATE DM_FEATURES SET NAME = ?, CODE = ?, DESCRIPTION = ? WHERE ID = ?";
-            stmt = conn.prepareStatement(query);
-            stmt.setString(1, feature.getName());
-            stmt.setString(2, feature.getCode());
-            stmt.setString(3, feature.getDescription());
-            stmt.setInt(4, feature.getId());
-            stmt.executeUpdate();
-
-        } catch (SQLException e) {
-            String msg = "Error occurred while updating feature " + feature.getName() + " (Feature Name) to the
-            database.";
-            log.error(msg, e);
-            throw new FeatureManagerDAOException(msg, e);
-        } finally {
-            PolicyManagementDAOUtil.cleanupResources(stmt, null);
-        }
-
-        return feature;
-    }*/
-
     @Override
     public ProfileFeature addProfileFeature(ProfileFeature feature, int profileId) throws FeatureManagerDAOException {
         return null;
@@ -247,7 +138,6 @@ public class FeatureDAOImpl implements FeatureDAO {
 
     @Override
     public boolean deleteFeaturesOfProfile(Profile profile) throws FeatureManagerDAOException {
-
         Connection conn;
         PreparedStatement stmt = null;
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
@@ -258,9 +148,10 @@ public class FeatureDAOImpl implements FeatureDAO {
             stmt = conn.prepareStatement(query);
             stmt.setInt(1, profile.getProfileId());
             stmt.setInt(2, tenantId);
-            stmt.executeUpdate();
+            if (stmt.executeUpdate() > 0) {
-            return true;
+                return true;
-
+            }
+            return false;
         } catch (SQLException e) {
             throw new FeatureManagerDAOException("Error occurred while deleting the feature related to a profile.", e);
         } finally {
@@ -270,7 +161,6 @@ public class FeatureDAOImpl implements FeatureDAO {
 
     @Override
     public boolean deleteFeaturesOfProfile(int profileId) throws FeatureManagerDAOException {
-
         Connection conn;
         PreparedStatement stmt = null;
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
@@ -280,9 +170,10 @@ public class FeatureDAOImpl implements FeatureDAO {
             stmt = conn.prepareStatement(query);
             stmt.setInt(1, profileId);
             stmt.setInt(2, tenantId);
-            stmt.executeUpdate();
+            if (stmt.executeUpdate() > 0) {
-            return true;
+                return true;
-
+            }
+            return false;
         } catch (SQLException e) {
             throw new FeatureManagerDAOException("Error occurred while deleting the feature related to a profile.", e);
         } finally {
@@ -448,7 +339,6 @@ public class FeatureDAOImpl implements FeatureDAO {
 
     @Override
     public boolean deleteFeature(int featureId) throws FeatureManagerDAOException {
-
         Connection conn;
         PreparedStatement stmt = null;
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId();
@@ -459,9 +349,10 @@ public class FeatureDAOImpl implements FeatureDAO {
             stmt = conn.prepareStatement(query);
             stmt.setInt(1, featureId);
             stmt.setInt(2, tenantId);
-            stmt.executeUpdate();
+            if(stmt.executeUpdate() > 0) {
-            return true;
+                return true;
-
+            }
+            return false;
         } catch (SQLException e) {
             throw new FeatureManagerDAOException("Unable to delete the feature " + featureId + " (Feature ID) " +
                     "from database.", e);

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/dao/impl/ProfileDAOImpl.java

@@ -132,7 +132,6 @@ public class ProfileDAOImpl implements ProfileDAO {
 
     @Override
     public boolean deleteProfile(Profile profile) throws ProfileManagerDAOException {
-
         Connection conn;
         PreparedStatement stmt = null;
 
@@ -141,9 +140,10 @@ public class ProfileDAOImpl implements ProfileDAO {
             String query = "DELETE FROM DM_PROFILE WHERE ID = ?";
             stmt = conn.prepareStatement(query);
             stmt.setInt(1, profile.getProfileId());
-            stmt.executeUpdate();
+            if (stmt.executeUpdate() > 0) {
-            return true;
+                return true;
-
+            }
+            return false;
         } catch (SQLException e) {
             String msg = "Error occurred while deleting the profile from the data base.";
             log.error(msg);
@@ -163,9 +163,10 @@ public class ProfileDAOImpl implements ProfileDAO {
             String query = "DELETE FROM DM_PROFILE WHERE ID = ?";
             stmt = conn.prepareStatement(query);
             stmt.setInt(1, profileId);
-            stmt.executeUpdate();
+            if (stmt.executeUpdate() > 0) {
-            return true;
+                return true;
-
+            }
+            return false;
         } catch (SQLException e) {
             String msg = "Error occurred while deleting the profile from the data base.";
             log.error(msg);
@@ -177,8 +178,7 @@ public class ProfileDAOImpl implements ProfileDAO {
 
 
     @Override
-    public Profile getProfiles(int profileId) throws ProfileManagerDAOException {
+    public Profile getProfile(int profileId) throws ProfileManagerDAOException {
-
         Connection conn;
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
@@ -216,7 +216,6 @@ public class ProfileDAOImpl implements ProfileDAO {
 
     @Override
     public List<Profile> getAllProfiles() throws ProfileManagerDAOException {
-
         Connection conn;
         PreparedStatement stmt = null;
         ResultSet resultSet = null;

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/mgt/impl/MonitoringManagerImpl.java

@@ -362,7 +362,6 @@ public class MonitoringManagerImpl implements MonitoringManager {
 
         DeviceManagementProviderService service = new DeviceManagementProviderServiceImpl();
         service.addOperation(monitoringOperation, deviceIdentifiers);
-
     }
 
     private List<DeviceIdentifier> getDeviceIdentifiersFromDevices(List<Device> devices) {

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/mgt/impl/PolicyManagerImpl.java

@@ -439,7 +439,7 @@ public class PolicyManagerImpl implements PolicyManager {
             policy = policyDAO.getPolicyByProfileID(profileId);
 
             roleNames = policyDAO.getPolicyAppliedRoles(policy.getId());
-            profile = profileDAO.getProfiles(profileId);
+            profile = profileDAO.getProfile(profileId);
             policy.setProfile(profile);
             policy.setRoles(roleNames);
 
@@ -474,7 +474,7 @@ public class PolicyManagerImpl implements PolicyManager {
             policy = policyDAO.getPolicy(policyId);
 
             roleNames = policyDAO.getPolicyAppliedRoles(policyId);
-            Profile profile = profileDAO.getProfiles(policy.getProfileId());
+            Profile profile = profileDAO.getProfile(policy.getProfileId());
 
             policy.setProfile(profile);
             policy.setRoles(roleNames);
@@ -871,12 +871,9 @@ public class PolicyManagerImpl implements PolicyManager {
 
     @Override
     public int getPolicyCount() throws PolicyManagementException {
-
-        int policyCount;
         try {
             PolicyManagementDAOFactory.openConnection();
-            policyCount = policyDAO.getPolicyCount();
+            return policyDAO.getPolicyCount();
-            return policyCount;
         } catch (PolicyManagerDAOException e) {
             throw new PolicyManagementException("Error occurred while getting policy count", e);
         } catch (SQLException e) {

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/mgt/impl/ProfileManagerImpl.java

@@ -147,7 +147,7 @@ public class ProfileManagerImpl implements ProfileManager {
 
         try {
             PolicyManagementDAOFactory.openConnection();
-            profile = profileDAO.getProfiles(profileId);
+            profile = profileDAO.getProfile(profileId);
             featureList = featureDAO.getFeaturesForProfile(profileId);
             profile.setProfileFeaturesList(featureList);
         } catch (ProfileManagerDAOException e) {

features/oauth-extensions/org.wso2.carbon.oauth.extensions.server.feature/pom.xml

@@ -37,14 +37,6 @@
     <description>This feature contains oauth functionality
     </description>
 
-    <!--<dependencies>-->
-
-        <!--<dependency>-->
-            <!--<groupId>org.wso2.mdm</groupId>-->
-            <!--<artifactId>dynamic-client-manager</artifactId>-->
-        <!--</dependency>-->
-    <!--</dependencies>-->
-
     <build>
         <plugins>
             <plugin>
@@ -101,8 +93,6 @@
                 </executions>
             </plugin>
 
-
-
             <plugin>
                 <groupId>org.wso2.maven</groupId>
                 <artifactId>carbon-p2-plugin</artifactId>
@@ -123,20 +113,6 @@
                                     <propertyDef>org.eclipse.equinox.p2.type.group:false</propertyDef>
                                 </properties>
                             </adviceFile>
-                            <!--<bundles>-->
-                                <!--<bundleDef>-->
-                                    <!--org.wso2.carbon.devicemgt:org.wso2.carbon.policy.mgt.core:${carbon.device.mgt.version}-->
-                                <!--</bundleDef>-->
-                                <!--<bundleDef>-->
-                                    <!--org.wso2.carbon.devicemgt:org.wso2.carbon.policy.mgt.common:${carbon.device.mgt.version}-->
-                                <!--</bundleDef>-->
-                                <!--<bundleDef>-->
-                                    <!--org.wso2.carbon.devicemgt:org.wso2.carbon.simple.policy.decision.point:${carbon.device.mgt.version}-->
-                                <!--</bundleDef>-->
-                                <!--<bundleDef>-->
-                                    <!--org.wso2.carbon.devicemgt:org.wso2.carbon.policy.information.point:${carbon.device.mgt.version}-->
-                                <!--</bundleDef>-->
-                            <!--</bundles>-->
                             <importFeatures>
                                 <importFeatureDef>org.wso2.carbon.core.server:${carbon.kernel.version}
                                 </importFeatureDef>
@@ -145,10 +121,6 @@
                     </execution>
                 </executions>
             </plugin>
-
-
-
-
         </plugins>
     </build>
 </project>