Fixed https://github.com/wso2/carbon-device-mgt/issues/1175

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

@@ -26,10 +26,12 @@ import org.wso2.carbon.device.mgt.common.TransactionManagementException;
 import org.wso2.carbon.device.mgt.common.UnsupportedDatabaseEngineException;
 import org.wso2.carbon.device.mgt.core.config.datasource.DataSourceConfig;
 import org.wso2.carbon.device.mgt.core.config.datasource.JNDILookupDefinition;
-import org.wso2.carbon.device.mgt.core.dao.impl.ApplicationDAOImpl;
+import org.wso2.carbon.device.mgt.core.dao.impl.AbstractApplicationDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.impl.ApplicationMappingDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.impl.DeviceTypeDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.impl.EnrollmentDAOImpl;
+import org.wso2.carbon.device.mgt.core.dao.impl.GenericApplicationDAOImpl;
+import org.wso2.carbon.device.mgt.core.dao.impl.PostgreSQLApplicationDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.impl.device.GenericDeviceDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.impl.device.OracleDeviceDAOImpl;
 import org.wso2.carbon.device.mgt.core.dao.impl.device.PostgreSQLDeviceDAOImpl;
@@ -125,7 +127,20 @@ public class DeviceManagementDAOFactory {
     }
 
     public static ApplicationDAO getApplicationDAO() {
-        return new ApplicationDAOImpl();
+        if (databaseEngine != null) {
+            switch (databaseEngine) {
+                case DeviceManagementConstants.DataBaseTypes.DB_TYPE_POSTGRESQL:
+                    return new PostgreSQLApplicationDAOImpl();
+                case DeviceManagementConstants.DataBaseTypes.DB_TYPE_ORACLE:
+                case DeviceManagementConstants.DataBaseTypes.DB_TYPE_MSSQL:
+                case DeviceManagementConstants.DataBaseTypes.DB_TYPE_H2:
+                case DeviceManagementConstants.DataBaseTypes.DB_TYPE_MYSQL:
+                    return new GenericApplicationDAOImpl();
+                default:
+                    throw new UnsupportedDatabaseEngineException("Unsupported database engine : " + databaseEngine);
+            }
+        }
+        throw new IllegalStateException("Database engine has not initialized properly.");
     }
 
     public static ApplicationMappingDAO getApplicationMappingDAO() {

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

@@ -40,9 +40,9 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;
 
-public class ApplicationDAOImpl implements ApplicationDAO {
+public abstract class AbstractApplicationDAOImpl implements ApplicationDAO {
 
-    private static final Log log = LogFactory.getLog(ApplicationDAOImpl.class);
+    private static final Log log = LogFactory.getLog(AbstractApplicationDAOImpl.class);
 
     @Override
     public int addApplication(Application application, int tenantId) throws DeviceManagementDAOException {
@@ -106,55 +106,6 @@ public class ApplicationDAOImpl implements ApplicationDAO {
         }
     }
 
-    @Override
-    public List<Integer> addApplications(List<Application> applications,
-                                         int tenantId) throws DeviceManagementDAOException {
-        Connection conn;
-        PreparedStatement stmt = null;
-        ResultSet rs;
-        List<Integer> applicationIds = new ArrayList<>();
-        try {
-            conn = this.getConnection();
-            stmt = conn.prepareStatement("INSERT INTO DM_APPLICATION (NAME, PLATFORM, CATEGORY, " +
-                    "VERSION, TYPE, LOCATION_URL, IMAGE_URL, TENANT_ID,APP_PROPERTIES, APP_IDENTIFIER, MEMORY_USAGE, IS_ACTIVE) " +
-                    "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)", new String[]{"id"});
-
-
-            for (Application application : applications) {
-
-                stmt.setString(1, application.getName());
-                stmt.setString(2, application.getPlatform());
-                stmt.setString(3, application.getCategory());
-                stmt.setString(4, application.getVersion());
-                stmt.setString(5, application.getType());
-                stmt.setString(6, application.getLocationUrl());
-                stmt.setString(7, application.getImageUrl());
-                stmt.setInt(8, tenantId);
-
-                // Removing the application properties saving from the application table.
-                stmt.setBigDecimal(9, null);
-
-                stmt.setString(10, application.getApplicationIdentifier());
-
-                // Removing the application memory
-                stmt.setInt(11, 0);
-                stmt.setBoolean(12, true);
-
-                stmt.executeUpdate();
-
-                rs = stmt.getGeneratedKeys();
-                if (rs.next()) {
-                    applicationIds.add(rs.getInt(1));
-                }
-            }
-            return applicationIds;
-        } catch (SQLException e) {
-            throw new DeviceManagementDAOException("Error occurred while adding bulk application list", e);
-        } finally {
-            DeviceManagementDAOUtil.cleanupResources(stmt, null);
-        }
-    }
-
     @Override
     public List<Integer> removeApplications(List<Application> apps, int tenantId) throws DeviceManagementDAOException {
         Connection conn = null;

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

@@ -0,0 +1,88 @@
+/*
+*  Copyright (c) 2018 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+*
+*  WSO2 Inc. licenses this file to you under the Apache License,
+*  Version 2.0 (the "License"); you may not use this file except
+*  in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing,
+*  software distributed under the License is distributed on an
+*  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+*  KIND, either express or implied.  See the License for the
+*  specific language governing permissions and limitations
+*  under the License.
+*/
+
+package org.wso2.carbon.device.mgt.core.dao.impl;
+
+import org.wso2.carbon.device.mgt.common.app.mgt.Application;
+import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOException;
+import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
+import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class GenericApplicationDAOImpl extends AbstractApplicationDAOImpl{
+
+    @Override
+    public List<Integer> addApplications(List<Application> applications,
+                                         int tenantId) throws DeviceManagementDAOException {
+        Connection conn;
+        PreparedStatement stmt = null;
+        ResultSet rs;
+        List<Integer> applicationIds = new ArrayList<>();
+        try {
+            conn = this.getConnection();
+            stmt = conn.prepareStatement("INSERT INTO DM_APPLICATION (NAME, PLATFORM, CATEGORY, " +
+                    "VERSION, TYPE, LOCATION_URL, IMAGE_URL, TENANT_ID,APP_PROPERTIES, APP_IDENTIFIER, MEMORY_USAGE, IS_ACTIVE) " +
+                    "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)", new String[]{"id"});
+
+
+            for (Application application : applications) {
+
+                stmt.setString(1, application.getName());
+                stmt.setString(2, application.getPlatform());
+                stmt.setString(3, application.getCategory());
+                stmt.setString(4, application.getVersion());
+                stmt.setString(5, application.getType());
+                stmt.setString(6, application.getLocationUrl());
+                stmt.setString(7, application.getImageUrl());
+                stmt.setInt(8, tenantId);
+
+                // Removing the application properties saving from the application table.
+                stmt.setBigDecimal(9, null);
+
+                stmt.setString(10, application.getApplicationIdentifier());
+
+                // Removing the application memory
+                stmt.setInt(11, 0);
+                stmt.setBoolean(12, true);
+
+                stmt.executeUpdate();
+
+                rs = stmt.getGeneratedKeys();
+                if (rs.next()) {
+                    applicationIds.add(rs.getInt(1));
+                }
+            }
+            return applicationIds;
+        } catch (SQLException e) {
+            throw new DeviceManagementDAOException("Error occurred while adding bulk application list", e);
+        } finally {
+            DeviceManagementDAOUtil.cleanupResources(stmt, null);
+        }
+    }
+
+    private Connection getConnection() throws SQLException {
+        return DeviceManagementDAOFactory.getConnection();
+    }
+
+}

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

@@ -0,0 +1,87 @@
+/*
+*  Copyright (c) 2018 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+*
+*  WSO2 Inc. licenses this file to you under the Apache License,
+*  Version 2.0 (the "License"); you may not use this file except
+*  in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing,
+*  software distributed under the License is distributed on an
+*  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+*  KIND, either express or implied.  See the License for the
+*  specific language governing permissions and limitations
+*  under the License.
+*/
+
+package org.wso2.carbon.device.mgt.core.dao.impl;
+
+import org.wso2.carbon.device.mgt.common.app.mgt.Application;
+import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOException;
+import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
+import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class PostgreSQLApplicationDAOImpl extends AbstractApplicationDAOImpl{
+
+    @Override
+    public List<Integer> addApplications(List<Application> applications,
+                                         int tenantId) throws DeviceManagementDAOException {
+        Connection conn;
+        PreparedStatement stmt = null;
+        ResultSet rs;
+        List<Integer> applicationIds = new ArrayList<>();
+        try {
+            conn = this.getConnection();
+            stmt = conn.prepareStatement("INSERT INTO DM_APPLICATION (NAME, PLATFORM, CATEGORY, " +
+                    "VERSION, TYPE, LOCATION_URL, IMAGE_URL, TENANT_ID,APP_PROPERTIES, APP_IDENTIFIER, MEMORY_USAGE, IS_ACTIVE) " +
+                    "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)", new String[]{"id"});
+
+
+            for (Application application : applications) {
+
+                stmt.setString(1, application.getName());
+                stmt.setString(2, application.getPlatform());
+                stmt.setString(3, application.getCategory());
+                stmt.setString(4, application.getVersion());
+                stmt.setString(5, application.getType());
+                stmt.setString(6, application.getLocationUrl());
+                stmt.setString(7, application.getImageUrl());
+                stmt.setInt(8, tenantId);
+
+                // Removing the application properties saving from the application table.
+                stmt.setBytes(9, null);
+
+                stmt.setString(10, application.getApplicationIdentifier());
+
+                // Removing the application memory
+                stmt.setInt(11, 0);
+                stmt.setBoolean(12, true);
+
+                stmt.executeUpdate();
+
+                rs = stmt.getGeneratedKeys();
+                if (rs.next()) {
+                    applicationIds.add(rs.getInt(1));
+                }
+            }
+            return applicationIds;
+        } catch (SQLException e) {
+            throw new DeviceManagementDAOException("Error occurred while adding bulk application list", e);
+        } finally {
+            DeviceManagementDAOUtil.cleanupResources(stmt, null);
+        }
+    }
+
+    private Connection getConnection() throws SQLException {
+        return DeviceManagementDAOFactory.getConnection();
+    }
+}