Fixing the error reported by check styles plugin.

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

@@ -18,5 +18,8 @@
  */
 package org.wso2.carbon.device.application.mgt.core.dao;
 
+/**
+ * This interface specifies the database access operations performed for comments.
+ */
 public interface CommentDAO {
 }

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

@@ -18,5 +18,9 @@
  */
 package org.wso2.carbon.device.application.mgt.core.dao;
 
+/**
+ * This interface provides the list of operations that are supported with subscription database.
+ *
+ */
 public interface SubscriptionDAO {
 }

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

@@ -24,7 +24,9 @@ import org.wso2.carbon.device.application.mgt.core.exception.VisibilityManagemen
 import java.util.List;
 
 /**
- * This interface provides the list of operations that are performed in the database layer with respect to the visibility.
+ * This interface provides the list of operations that are performed in the database
+ * layer with respect to the visibility.
+ * 
  */
 public interface VisibilityDAO {
 

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/common/DAOFactory.java

@@ -25,8 +25,8 @@ import org.wso2.carbon.device.application.mgt.core.config.ConfigurationManager;
 import org.wso2.carbon.device.application.mgt.core.dao.ApplicationDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.ApplicationReleaseDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.LifecycleStateDAO;
-import org.wso2.carbon.device.application.mgt.core.dao.VisibilityDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.PlatformDAO;
+import org.wso2.carbon.device.application.mgt.core.dao.VisibilityDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.application.GenericApplicationDAOImpl;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.application.release.GenericApplicationReleaseDAOImpl;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.application.release.OracleApplicationDAOImpl;
@@ -108,6 +108,7 @@ public class DAOFactory {
 
     /**
      * To get the instance of ApplicationReleaseDAOImplementation of the particular database engine.
+     *
      * @return specific ApplicationReleaseDAOImplementation
      */
     public static ApplicationReleaseDAO getApplicationReleaseDAO() {
@@ -127,6 +128,7 @@ public class DAOFactory {
 
     /**
      * To get the instance of VisibilityDAOImplementation of the particular database engine.
+     *
      * @return specific VisibilityDAOImplementation
      */
     public static VisibilityDAO getVisibilityDAO() {

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

@@ -39,7 +39,6 @@ import java.sql.Date;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/application/release/GenericApplicationReleaseDAOImpl.java

@@ -32,7 +32,6 @@ import java.sql.Date;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -199,9 +198,9 @@ public class GenericApplicationReleaseDAOImpl extends AbstractDAOImpl implements
             throws ApplicationManagementDAOException {
         Connection connection;
         PreparedStatement statement = null;
-        String sql = "UPDATE APPM_APPLICATION_RELEASE SET RELEASE_RESOURCE = IFNULL (?, RELEASE_RESOURCE), RELEASE_CHANNEL = IFNULL "
+        String sql = "UPDATE APPM_APPLICATION_RELEASE SET RELEASE_RESOURCE = IFNULL (?, RELEASE_RESOURCE)," +
-                + "(?, RELEASE_CHANNEL), RELEASE_DETAILS = IFNULL (?, RELEASE_DETAILS), IS_DEFAULT = IFNULL "
+                " RELEASE_CHANNEL = IFNULL (?, RELEASE_CHANNEL), RELEASE_DETAILS = IFNULL (?, RELEASE_DETAILS), " +
-                + "(?, IS_DEFAULT) WHERE  APPM_APPLICATION_ID = ? AND VERSION_NAME = ?";
+                "IS_DEFAULT = IFNULL (?, IS_DEFAULT) WHERE  APPM_APPLICATION_ID = ? AND VERSION_NAME = ?";
         try {
             connection = this.getDBConnection();
             statement = connection.prepareStatement(sql);
@@ -311,6 +310,7 @@ public class GenericApplicationReleaseDAOImpl extends AbstractDAOImpl implements
 
     /**
      * To insert the application release properties.
+     *
      * @param connection         Database Connection
      * @param applicationRelease Application Release the properties of which that need to be inserted.
      * @throws SQLException SQL Exception.

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/visibility/GenericVisibilityDAOImpl.java

@@ -117,12 +117,12 @@ public class GenericVisibilityDAOImpl extends AbstractDAOImpl implements Visibil
     public Visibility get(int applicationId) throws VisibilityManagementDAOException {
         PreparedStatement stmt = null;
         ResultSet resultSet = null;
-        final String VISIBILITY_TYPE = "VISIBILITY_TYPE";
+        final String visibilityTypeColumn = "VISIBILITY_TYPE";
-        final String ALLOWED_VAL = "ALLOWED_VAL";
+        final String allowedValColumn = "ALLOWED_VAL";
         try {
             Connection connection = getDBConnection();
-            String sql = "SELECT APPM_VISIBILITY.VALUE as " + ALLOWED_VAL + ", APPM_RESOURCE_TYPE.NAME AS " +
+            String sql = "SELECT APPM_VISIBILITY.VALUE as " + allowedValColumn + ", APPM_RESOURCE_TYPE.NAME AS " +
-                    VISIBILITY_TYPE + " FROM APPM_VISIBILITY JOIN APPM_RESOURCE_TYPE " +
+                    visibilityTypeColumn + " FROM APPM_VISIBILITY JOIN APPM_RESOURCE_TYPE " +
                     "ON APPM_VISIBILITY.RESOURCE_TYPE_ID = APPM_RESOURCE_TYPE.ID " +
                     "WHERE APPM_VISIBILITY.APPLICATION_ID = ?";
             stmt = connection.prepareStatement(sql);
@@ -132,9 +132,9 @@ public class GenericVisibilityDAOImpl extends AbstractDAOImpl implements Visibil
             List<String> allowedVal = new ArrayList<>();
             while (resultSet.next()) {
                 if (visibility.getType() == null) {
-                    visibility.setType(Visibility.Type.valueOf(resultSet.getString(VISIBILITY_TYPE)));
+                    visibility.setType(Visibility.Type.valueOf(resultSet.getString(visibilityTypeColumn)));
                 }
-                String val = resultSet.getString(ALLOWED_VAL);
+                String val = resultSet.getString(allowedValColumn);
                 if (val != null) {
                     allowedVal.add(val);
                 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationManagerImpl.java

@@ -22,7 +22,15 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.CarbonConstants;
 import org.wso2.carbon.context.PrivilegedCarbonContext;
-import org.wso2.carbon.device.application.mgt.common.*;
+import org.wso2.carbon.device.application.mgt.common.Application;
+import org.wso2.carbon.device.application.mgt.common.ApplicationList;
+import org.wso2.carbon.device.application.mgt.common.Filter;
+import org.wso2.carbon.device.application.mgt.common.Lifecycle;
+import org.wso2.carbon.device.application.mgt.common.LifecycleState;
+import org.wso2.carbon.device.application.mgt.common.LifecycleStateTransition;
+import org.wso2.carbon.device.application.mgt.common.Platform;
+import org.wso2.carbon.device.application.mgt.common.User;
+import org.wso2.carbon.device.application.mgt.common.Visibility;
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationManager;
 import org.wso2.carbon.device.application.mgt.core.dao.ApplicationDAO;

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/CategoryManagerImpl.java

@@ -22,6 +22,10 @@ import org.wso2.carbon.device.application.mgt.common.Filter;
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 import org.wso2.carbon.device.application.mgt.common.services.CategoryManager;
 
+/**
+ * This class is the default implementation for the CategoryManager.
+ *
+ */
 public class CategoryManagerImpl implements CategoryManager {
 
     @Override

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/CommentsManagerImpl.java

@@ -19,5 +19,8 @@ package org.wso2.carbon.device.application.mgt.core.impl;
 
 import org.wso2.carbon.device.application.mgt.common.services.CommentsManager;
 
+/**
+ * This class is the default implementation for the Managing the comments.
+ */
 public class CommentsManagerImpl implements CommentsManager {
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/SubscriptionManagerImpl.java

@@ -25,12 +25,17 @@ import org.wso2.carbon.device.application.mgt.common.services.SubscriptionManage
 
 import java.util.List;
 
+/**
+ * This is the default implementation for the Subscription Manager.
+ */
 public class SubscriptionManagerImpl implements SubscriptionManager {
 
     private static final Log log = LogFactory.getLog(SubscriptionManagerImpl.class);
 
     @Override
-    public List<DeviceIdentifier> installApplicationForDevices(String applicationUUID, List<DeviceIdentifier> deviceList) throws ApplicationManagementException {
+    public List<DeviceIdentifier> installApplicationForDevices(String applicationUUID,
+                                                               List<DeviceIdentifier> deviceList)
+            throws ApplicationManagementException {
         log.info("Install application: " + applicationUUID + " to: " + deviceList.size() + " devices.");
         for (DeviceIdentifier device : deviceList) {
             String deviceId = device.getId();
@@ -42,7 +47,8 @@ public class SubscriptionManagerImpl implements SubscriptionManager {
     }
 
     @Override
-    public List<String> installApplicationForUsers(String applicationUUID, List<String> userList) throws ApplicationManagementException {
+    public List<String> installApplicationForUsers(String applicationUUID, List<String> userList)
+            throws ApplicationManagementException {
         log.info("Install application: " + applicationUUID + " to: " + userList.size() + " users.");
         for (String user : userList) {
             //Todo: implementation
@@ -51,7 +57,8 @@ public class SubscriptionManagerImpl implements SubscriptionManager {
     }
 
     @Override
-    public List<String> installApplicationForRoles(String applicationUUID, List<String> roleList) throws ApplicationManagementException {
+    public List<String> installApplicationForRoles(String applicationUUID, List<String> roleList)
+            throws ApplicationManagementException {
         log.info("Install application: " + applicationUUID + " to: " + roleList.size() + " users.");
         for (String role : roleList) {
             //Todo: implementation
@@ -60,7 +67,9 @@ public class SubscriptionManagerImpl implements SubscriptionManager {
     }
 
     @Override
-    public List<DeviceIdentifier> uninstallApplication(String applicationUUID, List<DeviceIdentifier> deviceList) throws ApplicationManagementException {
+    public List<DeviceIdentifier> uninstallApplication(String applicationUUID,
+                                                       List<DeviceIdentifier> deviceList)
+            throws ApplicationManagementException {
         return null;
     }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/VisibilityManagerImpl.java

@@ -72,7 +72,8 @@ public class VisibilityManagerImpl implements VisibilityManager {
         try {
             VisibilityDAO visibilityDAO = DAOFactory.getVisibilityDAO();
             Visibility visibility = visibilityDAO.get(applicationID);
-            if (visibility.getType() == null && (visibility.getAllowedList() == null || visibility.getAllowedList().isEmpty())){
+            if (visibility.getType() == null && (visibility.getAllowedList() == null ||
+                    visibility.getAllowedList().isEmpty())) {
                 visibility.setType(Visibility.Type.PUBLIC);
             }
             return visibility;