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.processor;
018
019import org.apache.camel.AsyncCallback;
020import org.apache.camel.AsyncProcessor;
021import org.apache.camel.Exchange;
022import org.apache.camel.ExchangePattern;
023import org.apache.camel.support.ServiceSupport;
024import org.apache.camel.util.AsyncProcessorHelper;
025
026/**
027 * Processor to set {@link org.apache.camel.ExchangePattern} on the {@link org.apache.camel.Exchange}.
028 */
029public class ExchangePatternProcessor extends ServiceSupport implements AsyncProcessor {
030    private ExchangePattern exchangePattern = ExchangePattern.InOnly;
031    
032    public ExchangePatternProcessor() {
033    }
034    
035    public ExchangePatternProcessor(ExchangePattern ep) {
036        setExchangePattern(ep);
037    }
038    
039    public void setExchangePattern(ExchangePattern ep) {
040        exchangePattern = ep;
041    }
042
043    public void process(Exchange exchange) throws Exception {
044        AsyncProcessorHelper.process(this, exchange);
045    }
046
047    public boolean process(Exchange exchange, AsyncCallback callback) {
048        exchange.setPattern(exchangePattern);
049        callback.done(true);
050        return true;
051    }
052
053    @Override
054    public String toString() {
055        return "SetExchangePattern[" + exchangePattern + "]";
056    }
057
058    @Override
059    protected void doStart() throws Exception {
060        // noop
061    }
062
063    @Override
064    protected void doStop() throws Exception {
065        // noop
066    }
067}