remoteserversession.java

来自「OpenJMS是一个开源的Java Message Service API 1.」· Java 代码 · 共 473 行 · 第 1/2 页

/**
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided
 * that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright
 *    statements and notices.  Redistributions must also contain a
 *    copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the
 *    above copyright notice, this list of conditions and the
 *    following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. The name "Exolab" must not be used to endorse or promote
 *    products derived from this Software without prior written
 *    permission of Exoffice Technologies.  For written permission,
 *    please contact [e-mail].
 *
 * 4. Products derived from this Software may not be called "Exolab"
 *    nor may "Exolab" appear in their names without prior written
 *    permission of Exoffice Technologies. Exolab is a registered
 *    trademark of Exoffice Technologies.
 *
 * 5. Due credit should be given to the Exolab Project
 *    (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2004-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: RemoteServerSession.java,v 1.3 2005/08/30 05:24:21 tanderson Exp $
 */
package org.exolab.jms.server.net;

import java.rmi.RemoteException;
import java.util.List;
import javax.jms.JMSException;
import javax.transaction.xa.XAException;
import javax.transaction.xa.Xid;

import org.exolab.jms.client.JmsDestination;
import org.exolab.jms.client.JmsMessageListener;
import org.exolab.jms.client.JmsQueue;
import org.exolab.jms.client.JmsTopic;
import org.exolab.jms.message.MessageImpl;
import org.exolab.jms.net.orb.ORB;
import org.exolab.jms.net.orb.UnicastObject;
import org.exolab.jms.server.ServerSession;


/**
 * Implementation of the {@link ServerSession} interface which wraps an {@link
 * ServerSession} to make it remotable.
 *
 * @author <a href="mailto:[e-mail]">Tim Anderson</a>
 * @version $Revision: 1.3 $ $Date: 2005/08/30 05:24:21 $
 */
public class RemoteServerSession
        extends UnicastObject
        implements ServerSession {

    /**
     * The connection that created this.
     */
    private RemoteServerConnection _connection;

    /**
     * The session to delegate calls to.
     */
    private ServerSession _session;


    /**
     * Construct a new <code>RemoteServerSession</code>.
     *
     * @param orb        the ORB to export this with
     * @param connection the connection that created this
     * @param session    the session to delegate calls to
     * @throws RemoteException if this can't be exported
     */
    public RemoteServerSession(ORB orb, RemoteServerConnection connection,
                               ServerSession session)
            throws RemoteException {
        super(orb, null, true);
        if (connection == null) {
            throw new IllegalArgumentException("Argument 'connection' is null");
        }
        if (session == null) {
            throw new IllegalArgumentException("Argument 'session' is null");
        }
        _connection = connection;
        _session = session;
    }

    /**
     * Close and release any resource allocated to this session.
     *
     * @throws JMSException if the session can't be closed
     */
    public synchronized void close() throws JMSException {
        if (_session != null) {
            try {
                _session.close();
            } finally {
                try {
                    unexportObject();
                } catch (RemoteException exception) {
                    JMSException error = new JMSException(
                            exception.getMessage());
                    error.setLinkedException(exception);
                    throw error;
                } finally {
                    _connection.closed(this);
                    _connection = null;
                    _session = null;
                }
            }
        }
    }

    /**
     * Acknowledge that a message has been processed.
     *
     * @param consumerId the identity of the consumer performing the ack
     * @param messageId  the message identifier
     * @throws JMSException for any error
     */
    public void acknowledgeMessage(long consumerId, String messageId)
            throws JMSException {
        _session.acknowledgeMessage(consumerId, messageId);
    }

    /**
     * Send a message.
     *
     * @param message the message to send
     * @throws JMSException for any error
     */
    public void send(MessageImpl message) throws JMSException {
        _session.send(message);
    }

    /**
     * Send a set of messages.
     *
     * @param messages a list of <code>MessageImpl</code> instances
     * @throws JMSException for any JMS error
     */
    public void send(List messages) throws JMSException {
        _session.send(messages);
    }

    /**
     * Return the next available mesage to the specified consumer.
     * <p/>
     * This method is non-blocking. If no messages are available, it will return
     * immediately.
     *
     * @param consumerId the consumer identifier
     * @return the next message or <code>null</code> if none is available
     * @throws JMSException for any JMS error
     */
    public MessageImpl receiveNoWait(long consumerId) throws JMSException {
        return _session.receiveNoWait(consumerId);
    }

    /**
     * Return the next available message to the specified consumer.
     * <p/>
     * This method is non-blocking. However, clients can specify a
     * <code>wait</code> interval to indicate how long they are prepared to wait
     * for a message. If no message is available, and the client indicates that
     * it will wait, it will be notified via the registered {@link
     * JmsMessageListener} if one subsequently becomes available.
     *
     * @param consumerId the consumer identifier
     * @param wait       number of milliseconds to wait. A value of <code>0
     *                   </code> indicates to wait indefinitely
     * @return the next message or <code>null</code> if none is available
     * @throws JMSException for any JMS error
     */
    public MessageImpl receive(long consumerId, long wait) throws JMSException {
        return _session.receive(consumerId, wait);
    }

    /**
     * Browse up to count messages.
     *
     * @param consumerId the consumer identifier
     * @param count      the maximum number of messages to receive
     * @return a list of {@link MessageImpl} instances
     * @throws JMSException for any JMS error
     */
    public List browse(long consumerId, int count) throws JMSException {
        return _session.browse(consumerId, count);
    }

    /**
     * Create a new message consumer.
     *
     * @param destination the destination to consume messages from
     * @param selector    the message selector. May be <code>null</code>
     * @param noLocal     if true, and the destination is a topic, inhibits the
     *                    delivery of messages published by its own connection.
     *                    The behavior for <code>noLocal</code> is not specified
     *                    if the destination is a queue.
     * @return the identifty of the message consumer
     * @throws JMSException for any JMS error
     */
    public long createConsumer(JmsDestination destination, String selector,
                               boolean noLocal) throws JMSException {
        return _session.createConsumer(destination, selector, noLocal);
    }

    /**
     * Create a new durable consumer. Durable consumers may only consume from
     * non-temporary <code>Topic</code> destinations.
     *
     * @param topic    the non-temporary <code>Topic</code> to subscribe to
     * @param name     the name used to identify this subscription
     * @param selector only messages with properties matching the message
     *                 selector expression are delivered.  A value of null or an
     *                 empty string indicates that there is no message selector
     *                 for the message consumer.
     * @param noLocal  if set, inhibits the delivery of messages published by