com.autentia.wuija.persistence.impl.hibernate.HibernateTestUtils.java Source code

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Here is the source code for com.autentia.wuija.persistence.impl.hibernate.HibernateTestUtils.java

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/**
 * Copyright 2008 Autentia Real Business Solutions S.L.
 *
 * This file is part of Autentia WUIJA.
 *
 * Autentia WUIJA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, version 3 of the License.
 *
 * Autentia WUIJA 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Autentia WUIJA. If not, see <http://www.gnu.org/licenses/>.
 */
package com.autentia.wuija.persistence.impl.hibernate;

import javax.annotation.Resource;

import org.apache.commons.lang.ObjectUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.SessionFactoryUtils;
import org.springframework.orm.hibernate3.SessionHolder;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.springframework.util.Assert;

@Repository
public class HibernateTestUtils {

    private static final Log log = LogFactory.getLog(HibernateTestUtils.class);

    @Resource
    private SessionFactory sessionFactory;

    private Session sessionAlreadyOpened;

    /**
     * Mtodo pensado para usar en los test, de forma que para la ejecucin tengamos una nica sesin. Sera similar a
     * clases como <code>penSessionInViewFilter</code>. La idea es invocar este mtodo en un <code>@Before</code>.
     * <p>
     * Este mtodo se debera invocar una nica vez.
     * <p>
     * La sesin se "attacha" al contexto, de forma que est disponible para usar desde las transacciones o desde el
     * <code>HibernteTemplate</code>. Luego se cerrar con el mtodo {@link #closeSessionFromContext()}.
     */
    public void openSessionAndAttachToContext() {
        Assert.state(sessionAlreadyOpened == null,
                "A session is already opened: " + ObjectUtils.identityToString(sessionAlreadyOpened));

        sessionAlreadyOpened = SessionFactoryUtils.getSession(sessionFactory, true);
        TransactionSynchronizationManager.bindResource(sessionFactory, new SessionHolder(sessionAlreadyOpened));

        if (log.isDebugEnabled()) {
            log.debug("Opened Session: " + ObjectUtils.identityToString(sessionAlreadyOpened)
                    + ", with SessionFactory: " + ObjectUtils.identityToString(sessionFactory));
        }
    }

    /**
     * Mtodo pensado para usar en los test, de forma que para la ejecucin tengamos una nica sesin. Sera similar a
     * clases como <code>penSessionInViewFilter</code>. La idea es invocar este mtodo en un <code>@After</code>.
     * <p>
     * Este mtodo se debera invocar una nica vez.
     * <p>
     * Este mtodo se encarga de cerra la sessin que est "attacha" al contexto, y que se abri con el mtodo
     * {@link #openSessionAndAttachToContext()}.
     */
    public void closeSessionFromContext() {
        Assert.state(sessionAlreadyOpened != null,
                "There is not opened session. You have to call openSessionAndAttachToContext() method before this one");

        if (log.isTraceEnabled()) {
            log.trace("Closing session with SessionFactory: " + ObjectUtils.identityToString(sessionFactory));
        }

        final SessionHolder sessionHolder = (SessionHolder) TransactionSynchronizationManager
                .unbindResource(sessionFactory);
        final Session session = sessionHolder.getSession();

        Assert.state(sessionAlreadyOpened == session, "You are trying to close session: "
                + ObjectUtils.identityToString(session) + ", but this is not de actual opened session");
        sessionAlreadyOpened = null;

        SessionFactoryUtils.closeSession(session);

        if (log.isDebugEnabled()) {
            log.debug("Closed Session: " + ObjectUtils.identityToString(session));
        }
    }
}