liberatordaofactory.java

Chinaxp 论坛源代码

/*
 * Copyright 2003 by Redsoft Factory Inc.,
 * Apt 738, 68 Corporate Drive, Toronto, Ontario, Canada
 * All rights reserved.
 *
 * This software is the confidential and proprietary information
 * of Redsoft Factory Inc. ("Confidential Information").  You
 * shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Redsoft Factory.
 */
package org.redsoft.forum.dao.jdo;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManager;
import javax.jdo.PersistenceManagerFactory;

import org.redsoft.forum.ForumActionServlet;
import org.redsoft.forum.dao.AccountDAO;
import org.redsoft.forum.dao.DAOFactory;
import org.redsoft.forum.dao.ThreadDAO;

/**
 * A DAO factory to create JDO DAO implementation using Liberator JDO
 *
 * @author Charles Huang
 * Date: 22-Feb-2004
 * $Id: LiberatorDAOFactory.java,v 1.3 2004/04/10 19:56:59 cinc Exp $
 */
public class LiberatorDAOFactory extends DAOFactory {
    private PersistenceManagerFactory pmf;

    public LiberatorDAOFactory() {
        final Properties p = new Properties();
        InputStream in = null;
        try {
            in = ForumActionServlet.class.getResourceAsStream("jdo.properties");
            if (in == null)
                throw new RuntimeException( "jdo.properties not on classpath");
            p.load(in);
            pmf = JDOHelper.getPersistenceManagerFactory(p);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try{
            if (in != null)
                in.close();
            }catch( final IOException ioe ){
                // do nothing
            }
        }
    }

    /**
     * Return Thread DAO object
     */
    public ThreadDAO getThreadDAO() {
        return new ThreadDAOJDO( pmf );
    }

    /**
     *  Return Account DAO object
     */
    public AccountDAO getAccountDAO() {
        return new AccountDAOJDO( pmf );
    }

    /**
     * Return a persistence manager
     *
     * @return PersistenceManager
     */
    public PersistenceManager getPersistenceManager(){
        return pmf.getPersistenceManager();
    }

}