mq5.0-source.main.mqjmx-api.src.main.java.com.sun.messaging.jms.management.server.DestinationLimitBehavior Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2000-2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

/*
 * @(#)DestinationLimitBehavior.java	1.5 07/02/07
 */ 

package com.sun.messaging.jms.management.server;

/**
 * Class containing information on destination limit behavior.
 * These values specify how a destination responds when a memory-limit 
 * threshold is reached.
 */
public class DestinationLimitBehavior {
    /** 
     * Unknown destination limit behavior.
     */
    public static final String UNKNOWN = "UNKNOWN";

    /** 
     * Flow control - the producers are slowed down.
     */
    public static final String FLOW_CONTROL = "FLOW_CONTROL";

    /** 
     * Remove oldest - throws out the oldest messages.
     */
    public static final String REMOVE_OLDEST = "REMOVE_OLDEST";

    /** 
     * Rejects the newest messages. The producing client gets an exception for 
     * rejection of persistent messages only. To use this limit behavior with non-persistent 
     * messages, set the imqAckOnProduce connection factory attribute.
     */
    public static final String REJECT_NEWEST = "REJECT_NEWEST";

    /** 
     * Throws out the lowest priority messages according to age of the messages 
     * (producing client receives no notification of message deletion).
     */
    public static final String REMOVE_LOW_PRIORITY = "REMOVE_LOW_PRIORITY";

    /*
     * Class cannot be instantiated
     */
    private DestinationLimitBehavior() {
    }
}