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 */ 017package org.apache.camel; 018 019/** 020 * {@link org.apache.camel.Endpoint} can optionally implement this interface to 021 * indicate whether or not it supports multiple consumers. 022 * <p/> 023 * By default endpoints are assumed <b>not</b> to support multiple consumers. 024 * <p/> 025 * A rare few endpoints do in fact support multiple consumers and thus the purpose of this interface. 026 * For example JMS endpoints which have topics that can be consumed by multiple consumers. 027 * <p/> 028 * The purpose of this is to check on startup that we do not have multiple consumers 029 * for the <b>same</b> endpoints. This prevents starting up with copy/paste mistakes in the Camel routes. 030 * 031 * @version 032 */ 033public interface MultipleConsumersSupport { 034 035 /** 036 * Are multiple consumers supported? 037 * 038 * @return <tt>true</tt> if multiple consumers are supported 039 */ 040 boolean isMultipleConsumersSupported(); 041}