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.impl;
018    
019    import org.apache.camel.CamelContext;
020    import org.apache.camel.Component;
021    import org.apache.camel.Exchange;
022    import org.apache.camel.PollingConsumer;
023    import org.apache.camel.Processor;
024    import org.apache.camel.Producer;
025    
026    /**
027     * An endpoint which allows exchanges to be sent into it which just invokes a
028     * given {@link Processor}. This component does not support the use of
029     * consumers.
030     *
031     * @version $Revision: 747062 $
032     */
033    public class ProcessorEndpoint extends DefaultPollingEndpoint {
034        private Processor processor;
035    
036        protected ProcessorEndpoint() {
037        }
038    
039        protected ProcessorEndpoint(String endpointUri) {
040            super(endpointUri);
041        }
042    
043        public ProcessorEndpoint(String endpointUri, CamelContext context, Processor processor) {
044            super(endpointUri, context);
045            this.processor = processor;
046        }
047    
048        public ProcessorEndpoint(String endpointUri, Component component, Processor processor) {
049            super(endpointUri, component);
050            this.processor = processor;
051        }
052    
053        public ProcessorEndpoint(String endpointUri, Processor processor) {
054            super(endpointUri);
055            this.processor = processor;
056        }
057    
058        protected ProcessorEndpoint(String endpointUri, Component component) {
059            super(endpointUri, component);
060        }
061    
062        public Producer createProducer() throws Exception {
063            return new DefaultProducer(this) {
064                public void process(Exchange exchange) throws Exception {
065                    onExchange(exchange);
066                }
067            };
068        }
069    
070        @Override
071        public PollingConsumer createPollingConsumer() throws Exception {
072            return new ProcessorPollingConsumer(this, getProcessor());
073        }
074    
075        public Processor getProcessor() throws Exception {
076            if (processor == null) {
077                processor = createProcessor();
078            }
079            return processor;
080        }
081    
082        public void setProcessor(Processor processor) {
083            this.processor = processor;
084        }
085    
086        protected Processor createProcessor() throws Exception {
087            return new Processor() {
088                public void process(Exchange exchange) throws Exception {
089                    onExchange(exchange);
090                }
091            };
092        }
093    
094        protected void onExchange(Exchange exchange) throws Exception {
095            getProcessor().process(exchange);
096        }
097    
098        public boolean isSingleton() {
099            return true;
100        }
101    }