001 /** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one or more 004 * contributor license agreements. See the NOTICE file distributed with 005 * this work for additional information regarding copyright ownership. 006 * The ASF licenses this file to You under the Apache License, Version 2.0 007 * (the "License"); you may not use this file except in compliance with 008 * the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.camel.processor; 019 020 import org.apache.camel.Predicate; 021 import org.apache.camel.Processor; 022 import org.apache.camel.Exchange; 023 import org.apache.camel.impl.ServiceSupport; 024 import org.apache.camel.util.ServiceHelper; 025 026 /** 027 * @version $Revision: 534941 $ 028 */ 029 public class FilterProcessor extends ServiceSupport implements Processor { 030 private Predicate<Exchange> predicate; 031 private Processor processor; 032 033 public FilterProcessor(Predicate<Exchange> predicate, Processor processor) { 034 this.predicate = predicate; 035 this.processor = processor; 036 } 037 038 public void process(Exchange exchange) throws Exception { 039 if (predicate.matches(exchange)) { 040 processor.process(exchange); 041 } 042 } 043 044 @Override 045 public String toString() { 046 return "filter (" + predicate + ") " + processor; 047 } 048 049 public Predicate<Exchange> getPredicate() { 050 return predicate; 051 } 052 053 public Processor getProcessor() { 054 return processor; 055 } 056 057 protected void doStart() throws Exception { 058 ServiceHelper.startServices(processor); 059 } 060 061 protected void doStop() throws Exception { 062 ServiceHelper.stopServices(processor); 063 } 064 }