001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.activemq.broker.region.policy;
018    
019    import org.apache.activemq.command.ActiveMQDestination;
020    import org.apache.activemq.command.Message;
021    
022    /**
023     * A strategy for choosing which destination is used for dead letter queue messages.
024     * 
025     * @version $Revision: 668146 $
026     */
027    public interface DeadLetterStrategy {
028        
029        /**
030         * Allow pluggable strategy for deciding if message should be sent to a dead letter queue
031         * for example, you might not want to ignore expired or non-persistent messages
032         * @param message
033         * @return true if message should be sent to a dead letter queue
034         */
035        boolean isSendToDeadLetterQueue(Message message);
036    
037        /**
038         * Returns the dead letter queue for the given destination.
039         */
040        ActiveMQDestination getDeadLetterQueueFor(ActiveMQDestination originalDestination);
041        
042        /**
043         * @return true if processes expired messages
044         */
045        public boolean isProcessExpired() ;
046    
047        /**
048         * @param processExpired the processExpired to set
049         */
050        public void setProcessExpired(boolean processExpired);
051    
052        /**
053         * @return the processNonPersistent
054         */
055        public boolean isProcessNonPersistent();
056    
057        /**
058         * @param processNonPersistent the processNonPersistent to set
059         */
060        public void setProcessNonPersistent(boolean processNonPersistent);
061    
062    }