org.gatein.wsrp.consumer.registry.hibernate.HibernateConsumerRegistry.java Source code

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Here is the source code for org.gatein.wsrp.consumer.registry.hibernate.HibernateConsumerRegistry.java

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/*
 * JBoss, a division of Red Hat
 * Copyright 2011, Red Hat Middleware, LLC, and individual
 * contributors as indicated by the @authors tag. See the
 * copyright.txt in the distribution for a full listing of
 * individual contributors.
 *
 * This 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; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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 this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.gatein.wsrp.consumer.registry.hibernate;

import org.gatein.wsrp.consumer.ConsumerException;
import org.gatein.wsrp.consumer.ProducerInfo;
import org.gatein.wsrp.consumer.registry.AbstractConsumerRegistry;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

import javax.naming.InitialContext;
import java.util.Collection;
import java.util.Iterator;

/**
 * @author <a href="mailto:chris.laprun@jboss.com">Chris Laprun</a>
 * @version $Revision$
 */
public class HibernateConsumerRegistry extends AbstractConsumerRegistry {
    private SessionFactory sessionFactory;
    private String sessionFactoryJNDIName;

    public void save(ProducerInfo info, String messageOnError) {
        try {
            Session session = sessionFactory.getCurrentSession();
            session.persist(info);
        } catch (HibernateException e) {
            throw new ConsumerException(messageOnError, e);
        }
    }

    public void delete(ProducerInfo info) {
        Session session = sessionFactory.getCurrentSession();

        session.delete(info);
    }

    public String getSessionFactoryJNDIName() {
        return sessionFactoryJNDIName;
    }

    public void setSessionFactoryJNDIName(String sessionFactoryJNDIName) {
        this.sessionFactoryJNDIName = sessionFactoryJNDIName;
    }

    /**
     * Updates the given ProducerInfo
     *
     * @param producerInfo the ProducerInfo to update
     * @return the id that was previously assigned to the specified ProducerInfo or <code>null</code> if the id hasn't
     *         been modified
     */
    public String update(ProducerInfo producerInfo) {
        String oldId;
        Session session = sessionFactory.getCurrentSession();
        try {

            // Retrieve the previous id of the given ProducerInfo to update local consumers map if needed
            oldId = (String) session.createQuery("select pi.persistentId from ProducerInfo pi where pi.id = :key")
                    .setParameter("key", producerInfo.getKey()).uniqueResult();
            if (producerInfo.getId().equals(oldId)) {
                oldId = null; // reset oldId as the ProducerInfo's id hasn't been modified
            }

            // merge old producer info with new data
            session.update(producerInfo);

        } catch (HibernateException e) {
            throw new ConsumerException("Couldn't update ProducerInfo for Consumer '" + producerInfo.getId() + "'",
                    e);
        }
        return oldId;
    }

    public Iterator<ProducerInfo> getProducerInfosFromStorage() {
        Session session = sessionFactory.getCurrentSession();

        return session.createQuery("from ProducerInfo pi order by pi.persistentId").iterate();
    }

    public ProducerInfo loadProducerInfo(String id) {
        Session session = sessionFactory.getCurrentSession();
        return (ProducerInfo) session.createQuery("from ProducerInfo pi where pi.persistentId = :id")
                .setParameter("id", id).uniqueResult();
    }

    @Override
    public void start() throws Exception {
        InitialContext initialContext = new InitialContext();
        sessionFactory = (SessionFactory) initialContext.lookup(sessionFactoryJNDIName);
        super.start();
    }

    @Override
    public void stop() throws Exception {
        sessionFactory = null;
        super.stop();
    }

    public Collection<String> getConfiguredConsumersIds() {
        throw new UnsupportedOperationException();
    }

    @Override
    protected void initConsumerCache() {
        setConsumerCache(new InMemoryConsumerCache(this));
    }
}