Refactored Enrollment DAO class

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

@@ -71,6 +71,7 @@ public class EnrollmentDAOImpl implements EnrollmentDAO {
         PreparedStatement stmt = null;
         ResultSet rs = null;
         int status = -1;
+        int rows;
         try {
             conn = this.getConnection();
             String sql = "UPDATE DM_ENROLMENT SET OWNERSHIP = ?, STATUS = ?, " +
@@ -85,12 +86,12 @@ public class EnrollmentDAOImpl implements EnrollmentDAO {
             stmt.setString(6, enrolmentInfo.getOwner());
             stmt.setInt(7, tenantId);
             stmt.setInt(8, enrolmentInfo.getId());
-            stmt.executeUpdate();
+            rows = stmt.executeUpdate();
 
-            rs = stmt.getGeneratedKeys();
-            if (rs.next()) {
+            if (rows > 0) {
                 status = 1;
             }
+
             return status;
         } catch (SQLException e) {
             throw new DeviceManagementDAOException("Error occurred while updating enrolment configuration", e);