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.camel.processor;
018    
019    import org.apache.camel.AsyncCallback;
020    import org.apache.camel.AsyncProcessor;
021    import org.apache.camel.Exchange;
022    import org.apache.camel.ExchangePattern;
023    import org.apache.camel.support.ServiceSupport;
024    import org.apache.camel.util.AsyncProcessorHelper;
025    
026    public class ExchangePatternProcessor extends ServiceSupport implements AsyncProcessor {
027        private ExchangePattern exchangePattern = ExchangePattern.InOnly;
028        
029        public ExchangePatternProcessor() {
030        }
031        
032        public ExchangePatternProcessor(ExchangePattern ep) {
033            setExchangePattern(ep);
034        }
035        
036        public void setExchangePattern(ExchangePattern ep) {
037            exchangePattern = ep;
038        }
039    
040        public void process(Exchange exchange) throws Exception {
041            AsyncProcessorHelper.process(this, exchange);
042        }
043    
044        public boolean process(Exchange exchange, AsyncCallback callback) {
045            exchange.setPattern(exchangePattern);
046            callback.done(true);
047            return true;
048        }
049    
050        @Override
051        public String toString() {
052            return "SetExchangePattern[" + exchangePattern + "]";
053        }
054    
055        @Override
056        protected void doStart() throws Exception {
057            // noop
058        }
059    
060        @Override
061        protected void doStop() throws Exception {
062            // noop
063        }
064    }