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The ActiveMQ Message Broker and Client implementations
/**
* 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 java.io.IOException;
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 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() throws IOException {
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;
}
}