JTopicSession.java

/*
 * JOnAS: Java(TM) Open Application Server
 * Copyright (C) 1999 Bull S.A.
 * Contact: jonas-team@objectweb.org
 * 
 * This library 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 any later version.
 * 
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 *
 * --------------------------------------------------------------------------
 * $Id: JTopicSession.java,v 1.7 2004/03/19 14:31:48 sauthieg Exp $
 * --------------------------------------------------------------------------
 */

package org.objectweb.jonas_jms;

import javax.jms.InvalidDestinationException;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TemporaryTopic;
import javax.jms.Topic;
import javax.jms.TopicPublisher;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import javax.jms.XATopicConnection;
import javax.jms.XATopicSession;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.Transaction;

import org.objectweb.util.monolog.api.BasicLevel;
public class JTopicSession extends JSession implements TopicSession {

    // Underlaying Objects
    protected XATopicConnection xatc;
    protected TopicSession ts = null;
    protected XATopicSession xats = null;

    public JTopicSession(JConnection jconn, XATopicConnection xatc) {
        super(jconn);
        this.xatc = xatc;
    }

    // -----------------------------------------------------------------------
    // Internal Methods
    // -----------------------------------------------------------------------

    protected Session getMOMSession() throws JMSException {
        return getMOMTopicSession();
    }

    protected TopicSession getMOMTopicSession() throws JMSException {
        Transaction tx = null;
        try {
            tx = tm.getTransaction();
        } catch (SystemException e) {
            TraceJms.logger.log(BasicLevel.ERROR,"cannot get Transaction");
        }
        if (tx == null) {
            if (ts == null) {
                ts = xatc.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
                jconn.sessionOpen(this);
            }
            return ts;
        } else {
            if (xats == null) {
                xats = xatc.createXATopicSession();
                if (currtx != null) {
                    TraceJms.logger.log(BasicLevel.ERROR,"mixed transactions");
                }
                currtx = tx;
                xares = xats.getXAResource();
                try {
                    tx.enlistResource(this.getXAResource());
            txover = false;
                } catch (SystemException e) {
                    TraceJms.logger.log(BasicLevel.ERROR,"cannot enlist session:"+e);
                    throw new JMSException(e.toString());
                } catch (RollbackException e) {
                    TraceJms.logger.log(BasicLevel.DEBUG,"transaction rolled back");
                    throw new JMSException(e.toString());
                }
            } 
            return xats.getTopicSession();
        }
    }

    protected void MOMSessionClose() {
        try {
            if (xats != null) {
                xats.close();
                xats = null;
            }
            if (ts != null) {
                ts.close();
                ts = null;
                jconn.sessionClose(this);
            }
        } catch (JMSException e) {
            TraceJms.logger.log(BasicLevel.ERROR,"exception:"+e);
        }
    }

    // -----------------------------------------------------------------------
    // TopicSession Implementation
    // -----------------------------------------------------------------------

    public Topic createTopic(String topicName) throws JMSException {
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createTopic(topicName);
    }

    public TopicSubscriber createSubscriber(Topic topic) 
        throws JMSException{
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createSubscriber(topic);
    }
    
    public TopicSubscriber createSubscriber(Topic topic, 
                                            String messageSelector, 
                                            boolean noLocal) throws JMSException {
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createSubscriber(topic, messageSelector, noLocal);
    }

    public TopicSubscriber createDurableSubscriber(Topic topic, 
                                                   String name) throws JMSException {
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createDurableSubscriber(topic, name);
    }
 
    public TopicSubscriber createDurableSubscriber(Topic topic, 
                                                   String name, 
                                                   String messageSelector, 
                                                   boolean noLocal) throws JMSException{ 
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createDurableSubscriber(topic, name, messageSelector, noLocal);
    }
   
    public TopicPublisher createPublisher(Topic topic) throws JMSException {
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createPublisher(topic);
    }

    public TemporaryTopic createTemporaryTopic() throws JMSException {
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        return getMOMTopicSession().createTemporaryTopic();
    }
  
    public void unsubscribe(java.lang.String name) throws JMSException, InvalidDestinationException {
        TraceJms.logger.log(BasicLevel.DEBUG, "");
        getMOMTopicSession().unsubscribe(name);
    }
}

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