DAOFactory.java

/*
 * Copyright 2012 buddycloud
 *
 * Licensed 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 com.buddycloud.mediaserver.business.dao;

/**
 * Factory that abstracts DAO's instance creation.
 * 
 * @author Rodrigo Duarte Sousa - rodrigodsosua@gmail.com
 */
public class DAOFactory {

	private MediaDAO mediaDAO;

	private static final DAOFactory instance = new DAOFactory();

	private DAOFactory() {
	}

	public static DAOFactory getInstance() {
		return instance;
	}

	/**
	 * Creates and returns a {@link MediaDAO} instance. 
	 * @return the {@link MediaDAO} instance.
	 */
	public MediaDAO getDAO() {
		if (mediaDAO == null) {
			mediaDAO = new MediaDAO();
		}

		return mediaDAO;
	}
}