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.broker.Broker; 020 import org.apache.activemq.broker.region.DurableTopicSubscription; 021 import org.apache.activemq.broker.region.Subscription; 022 import org.apache.activemq.broker.region.cursors.PendingMessageCursor; 023 024 /** 025 * Abstraction to allow different policies for holding messages awaiting 026 * dispatch to active clients 027 * 028 * 029 */ 030 public interface PendingDurableSubscriberMessageStoragePolicy { 031 032 /** 033 * Retrieve the configured pending message storage cursor; 034 * @param broker 035 * 036 * @param clientId 037 * @param name 038 * @param maxBatchSize 039 * @param sub 040 * @return the Pending Message cursor 041 */ 042 PendingMessageCursor getSubscriberPendingMessageCursor(Broker broker,String clientId, String name, int maxBatchSize, DurableTopicSubscription sub); 043 }