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 * Provides a channel on which clients can create and invoke message exchanges
021 * on an {@link Endpoint}
022 * 
023 * @version 
024 */
025public interface Producer extends Processor, Service, IsSingleton, EndpointAware {
026
027    /**
028     * Creates a new exchange to send to this endpoint
029     * 
030     * @return a newly created exchange
031     */
032    Exchange createExchange();
033
034    /**
035     * Creates a new exchange of the given pattern to send to this endpoint
036     *
037     * @param pattern the exchange pattern
038     * @return a newly created exchange
039     */
040    Exchange createExchange(ExchangePattern pattern);
041
042    /**
043     * Creates a new exchange for communicating with this exchange using the
044     * given exchange to pre-populate the values of the headers and messages
045     *
046     * @param exchange the existing exchange
047     * @return the created exchange
048     * @deprecated will be removed in Camel 3.0
049     */
050    @Deprecated
051    Exchange createExchange(Exchange exchange);
052}