DeviceManagementDAOFactory.java

/*
 * Copyright (c) 2014, 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;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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.DeviceDAOImpl;
import org.wso2.carbon.device.mgt.core.dao.impl.DeviceTypeDAOImpl;
import org.wso2.carbon.device.mgt.core.dao.util.DeviceManagementDAOUtil;

import javax.sql.DataSource;
import java.util.Hashtable;
import java.util.List;

public class DeviceManagementDAOFactory {

	private static DataSource dataSource;
	private static final Log log = LogFactory.getLog(DeviceManagementDAOFactory.class);

	public static DeviceDAO getDeviceDAO() {
		return new DeviceDAOImpl(dataSource);
	}

	public static DeviceTypeDAO getDeviceTypeDAO() {
		return new DeviceTypeDAOImpl(dataSource);
	}

	public static void init(DataSourceConfig config) {
		dataSource = resolveDataSource(config);
	}

	public static void init(DataSource dtSource) {
		dataSource = dtSource;
	}

	/**
	 * Resolve data source from the data source definition
	 *
	 * @param config data source configuration
	 * @return data source resolved from the data source definition
	 */
	private static DataSource resolveDataSource(DataSourceConfig config) {
		DataSource dataSource = null;
		if (config == null) {
			throw new RuntimeException(
					"Device Management Repository data source configuration " + "is null and " +
					"thus, is not initialized");
		}
		JNDILookupDefinition jndiConfig = config.getJndiLookupDefinition();
		if (jndiConfig != null) {
			if (log.isDebugEnabled()) {
				log.debug("Initializing Device Management Repository data source using the JNDI " +
				          "Lookup Definition");
			}
			List<JNDILookupDefinition.JNDIProperty> jndiPropertyList =
					jndiConfig.getJndiProperties();
			if (jndiPropertyList != null) {
				Hashtable<Object, Object> jndiProperties = new Hashtable<Object, Object>();
				for (JNDILookupDefinition.JNDIProperty prop : jndiPropertyList) {
					jndiProperties.put(prop.getName(), prop.getValue());
				}
				dataSource = DeviceManagementDAOUtil
						.lookupDataSource(jndiConfig.getJndiName(), jndiProperties);
			} else {
				dataSource =
						DeviceManagementDAOUtil.lookupDataSource(jndiConfig.getJndiName(), null);
			}
		}
		return dataSource;
	}

	public static DataSource getDataSource() {
		return dataSource;
	}

}