jakarta.jms.ConnectionConsumer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 34.0.0.Final

Show newest version

/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package jakarta.jms;

/**
 * For application servers, {@code Connection} objects provide a special facility for creating a
 * {@code ConnectionConsumer} (optional). The messages it is to consume are specified by a {@code Destination} and a
 * message selector. In addition, a {@code ConnectionConsumer} must be given a {@code ServerSessionPool} to use for
 * processing its messages.
 *
 * 
 * Normally, when traffic is light, a {@code ConnectionConsumer} gets a {@code ServerSession} from its pool, loads it
 * with a single message, and starts it. As traffic picks up, messages can back up. If this happens, a
 * {@code ConnectionConsumer} can load each {@code ServerSession} with more than one message. This reduces the thread
 * context switches and minimizes resource use at the expense of some serialization of message processing.
 *
 * @see jakarta.jms.Connection#createConnectionConsumer
 * @see jakarta.jms.Connection#createDurableConnectionConsumer
 * @see jakarta.jms.QueueConnection#createConnectionConsumer
 * @see jakarta.jms.TopicConnection#createConnectionConsumer
 * @see jakarta.jms.TopicConnection#createDurableConnectionConsumer
 *
 * @version Jakarta Messaging 2.0
 * @since JMS 1.0
 *
 */
public interface ConnectionConsumer {

    /**
     * Gets the server session pool associated with this connection consumer.
     *
     * @return the server session pool used by this connection consumer
     *
     * @exception JMSException if the Jakarta Messaging provider fails to get the server session pool associated with this consumer due to
     * some internal error.
     */
    ServerSessionPool getServerSessionPool() throws JMSException;

    /**
     * Closes the connection consumer.
     *
     * 
     * Since a provider may allocate some resources on behalf of a connection consumer outside the Java virtual machine,
     * clients should close these resources when they are not needed. Relying on garbage collection to eventually reclaim
     * these resources may not be timely enough.
     *
     * @exception JMSException if the Jakarta Messaging provider fails to release resources on behalf of the connection consumer or fails
     * to close the connection consumer.
     */

    void close() throws JMSException;
}