001 /** 002 * 003 * Copyright 2005 Hiram Chirino 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * 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 **/ 018 package org.activemq.advisories; 019 020 public interface ProducerDemandListener { 021 022 /** 023 * Called when a there is a chanage in demand for a destination. 024 * @param event 025 */ 026 public void onEvent(ProducerDemandEvent event); 027 028 }