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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;
/**
* Queue specific MessageReference.
*
* @author [email protected]
* @version $Revision: 628667 $
*/
public interface QueueMessageReference extends MessageReference {
QueueMessageReference NULL_MESSAGE = new NullMessageReference();
boolean isAcked();
void setAcked(boolean b);
void drop();
boolean isDropped();
boolean lock(LockOwner subscription);
boolean unlock();
LockOwner getLockOwner();
}