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.memory.list; 018 019 import java.util.List; 020 import org.apache.activemq.broker.region.MessageReference; 021 import org.apache.activemq.command.ActiveMQDestination; 022 import org.apache.activemq.command.Message; 023 024 /** 025 * A container of messages which is used to store messages and then 026 * replay them later for a given subscription. 027 * 028 * @version $Revision: 1.1 $ 029 */ 030 public interface MessageList { 031 032 void add(MessageReference node); 033 034 /** 035 * Returns the current list of MessageReference objects for the given subscription 036 */ 037 List getMessages(ActiveMQDestination destination); 038 039 /** 040 * @param destination 041 * @return an array of Messages that match the destination 042 */ 043 Message[] browse(ActiveMQDestination destination); 044 045 void clear(); 046 047 048 }