org.webical.dao.hibernateImpl.SessionFactoryUtils.java Source code

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Here is the source code for org.webical.dao.hibernateImpl.SessionFactoryUtils.java

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/*
 *    Webical - http://www.webical.org
 *    Copyright (C) 2007 Func. Internet Integration
 *
 *    This file is part of Webical.
 *
 *    $Id$
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.webical.dao.hibernateImpl;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.InitializingBean;
import org.webical.dao.DaoException;

public class SessionFactoryUtils implements InitializingBean {
    private static Log log = LogFactory.getLog(SessionFactoryUtils.class);

    private static ThreadLocal<Session> threadLocalSession = new ThreadLocal<Session>();
    private static SessionFactory sessionFactory;

    public static Session getSession() throws DaoException {
        if (threadLocalSession.get() == null || !threadLocalSession.get().isOpen()) {
            throw new DaoException("Session does not exist or was already closed");
        }
        return threadLocalSession.get();
    }

    public static void flushSession() throws DaoException {
        if (threadLocalSession.get().isOpen())
            threadLocalSession.get().flush();
    }

    public static void closeSession() throws DaoException {
        log.debug("Closing Session");
        if (threadLocalSession.get() == null || !threadLocalSession.get().isOpen()) {
            throw new DaoException("Session does not exist or was already closed");
        }
        flushSession();
        threadLocalSession.get().close();
    }

    public static void createSession() {
        log.debug("Setting up a new Session");
        Session session = sessionFactory.openSession();
        threadLocalSession.set(session);
    }

    public void setSessionFactory(SessionFactory sessionFactory) {
        SessionFactoryUtils.sessionFactory = sessionFactory;
    }

    public void afterPropertiesSet() throws Exception {
        if (sessionFactory == null) {
            log.error(SessionFactoryUtils.class + " needs a " + SessionFactory.class);
            throw new ExceptionInInitializerError(SessionFactoryUtils.class + " needs a " + SessionFactory.class);
        }
    }
}