jmsqueueconnection.java

实现了Jms的服务器源码,支持多种适配器,DB,FTP,支持多种数据库

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 *    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 2000-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: JmsQueueConnection.java,v 1.11 2004/01/11 02:33:44 tanderson Exp $
 */
package org.exolab.jms.client;


import javax.jms.ConnectionConsumer;
import javax.jms.IllegalStateException;
import javax.jms.JMSException;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueSession;
import javax.jms.ServerSessionPool;
import javax.jms.Session;


/**
 * Client implementation of the <code>javax.jms.QueueConnection</code>
 * interface
 *
 * @version     $Revision: 1.11 $ $Date: 2004/01/11 02:33:44 $
 * @author      <a href="mailto:[e-mail]">Jim Alateras</a>
 * @author      <a href="mailto:[e-mail]">Tim Anderson</a>
 * @see         javax.jms.QueueConnection
 */
class JmsQueueConnection extends JmsConnection implements QueueConnection {

    /**
     * Construct a new <code>JmsQueueConnection</code>
     * <p>
     * This attempts to establish a connection to the JMS server
     *
     * @param factory the connection factory responsible for creating this
     * @param id the client identity
     * @param username the client username
     * @param password the client password
     * @throws JMSException if a connection cannot be established
     */
    public JmsQueueConnection(JmsQueueConnectionFactory factory, String id,
                              String username, String password)
        throws JMSException {
        super(factory, id, username, password);
    }

    /**
     * Create a new queue session
     *
     * @param transacted if <code>true</code>, the session is transacted.
     * @param ackMode indicates whether the consumer or the client will 
     * acknowledge any messages it receives. This parameter will be ignored if 
     * the session is transacted. Legal values are 
     * <code>Session.AUTO_ACKNOWLEDGE</code>, 
     * <code>Session.CLIENT_ACKNOWLEDGE</code> and 
     * <code>Session.DUPS_OK_ACKNOWLEDGE</code>.
     * @return the new queue session
     * @throws JMSException if the session cannot be created
     */
    public QueueSession createQueueSession(boolean transacted, int ackMode)
        throws JMSException {

        ensureOpen();
        setModified();

        JmsQueueSession session = new JmsQueueSession(this, transacted,
            ackMode);

        // if the connection is started then also start the session
        if (!isStopped()) {
            session.start();
        }

        // add it to the list of managed sessions for this connection
        addSession(session);

        return session;
    }

    /**
     * Create a connection consumer for this connection
     *
     * @param queue the queue to access
     * @param selector the message selector. May be <code>null</code>
     * @param pool the server session pool to associate with the consumer
     * @param maxMessages the maximum number of messages that can be assigned 
     * to a server session at one time
     * @return the new connection consumer
     * @throws InvalidSelectorException if the message selector is invalid
     * @throws JMSException if the connection consumer cannot be created
     */
    public ConnectionConsumer createConnectionConsumer(
        Queue queue, String selector, ServerSessionPool pool, int maxMessages)
        throws JMSException {

        ensureOpen();
        setModified();

        return new JmsQueueConnectionConsumer(
            this, queue, pool, selector, maxMessages);
    }

}