/** * 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; import javax.jms.MessageConsumer; /** * A listener which is notified if a message is available for processing via the * receive methods. Typically on receiving this notification you can call * {@link MessageConsumer#receiveNoWait()} to get the new message immediately. * * Note that this notification just indicates a message is available for synchronous consumption, * it does not actually consume the message. * * */ public interface MessageAvailableListener { void onMessageAvailable(MessageConsumer consumer); }