ActiveMQ example source code file (MessageReference.java)

This example ActiveMQ source code file (MessageReference.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

consumerid, consumerid, destination, destination, message, message, messageid, messagereference, string, string

The ActiveMQ MessageReference.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.activemq.broker.region;

import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageId;

/**
 * Keeps track of a message that is flowing through the Broker.  This 
 * object may hold a hard reference to the message or only hold the
 * id of the message if the message has been persisted on in a MessageStore.
 * 
 * 
 */
public interface MessageReference {
    
    MessageId getMessageId();
    Message getMessageHardRef();
    Message getMessage();
    boolean isPersistent();
    
    Destination getRegionDestination();
    
    int getRedeliveryCounter();
    void incrementRedeliveryCounter();
    
    int getReferenceCount();
    
    int incrementReferenceCount();
    int decrementReferenceCount();
    ConsumerId getTargetConsumerId();
    int getSize();
    long getExpiration();
    String getGroupID();
    int getGroupSequence();
    
    /**
     * Returns true if this message is expired
     */
    boolean isExpired();

    /**
     * Returns true if this message is dropped.
     */
    boolean isDropped();
    
    /**
     * @return true if the message is an advisory
     */
    boolean isAdvisory();
    
}