ActiveMQ example source code file (NullMessageReference.java)

This example ActiveMQ source code file (NullMessageReference.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

activemqmessage, activemqmessage, consumerid, destination, lockowner, lockowner, message, message, messageid, nullmessagereference, queuemessagereference, runtimeexception, runtimeexception, string

The ActiveMQ NullMessageReference.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.ActiveMQMessage;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageId;

/**
 * Only used by the {@link QueueMessageReference#NULL_MESSAGE}
 */
final class NullMessageReference implements QueueMessageReference {

    private final ActiveMQMessage message = new ActiveMQMessage();
    private volatile int references;

    public void drop() {
        throw new RuntimeException("not implemented");
    }

    public LockOwner getLockOwner() {
        throw new RuntimeException("not implemented");
    }

    public boolean isAcked() {
        return false;
    }

    public boolean isDropped() {
        return false;
    }

    public boolean lock(LockOwner subscription) {
        return true;
    }

    public void setAcked(boolean b) {
        throw new RuntimeException("not implemented");
    }

    public boolean unlock() {
        return true;
    }

    public int decrementReferenceCount() {
        return --references;
    }

    public long getExpiration() {
        throw new RuntimeException("not implemented");
    }

    public String getGroupID() {
        return null;
    }

    public int getGroupSequence() {
        return 0;
    }

    public Message getMessage()  {
        return message;
    }

    public Message getMessageHardRef() {
        throw new RuntimeException("not implemented");
    }

    public MessageId getMessageId() {
        return message.getMessageId();
    }

    public int getRedeliveryCounter() {
        throw new RuntimeException("not implemented");
    }

    public int getReferenceCount() {
        return references;
    }

    public Destination getRegionDestination() {
        return null;
    }

    public int getSize() {
        throw new RuntimeException("not implemented");
    }

    public ConsumerId getTargetConsumerId() {
        throw new RuntimeException("not implemented");
    }

    public void incrementRedeliveryCounter() {
        throw new RuntimeException("not implemented");
    }

    public int incrementReferenceCount() {
        return ++references;
    }

    public boolean isExpired() {
        throw new RuntimeException("not implemented");
    }

    public boolean isPersistent() {
        throw new RuntimeException("not implemented");
    }

    public boolean isAdvisory() {
        return false;
    }

}