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.Exchange;
020    import org.apache.camel.Predicate;
021    import org.apache.camel.Processor;
022    
023    /**
024     * The processor which implements the
025     * <a href="http://activemq.apache.org/camel/message-filter.html">Message Filter</a> EIP pattern.
026     *
027     * @version $Revision: 41826 $
028     */
029    public class FilterProcessor extends DelegateProcessor {
030        private Predicate<Exchange> predicate;
031    
032        public FilterProcessor(Predicate<Exchange> predicate, Processor processor) {
033            super(processor);
034            this.predicate = predicate;
035        }
036    
037        public void process(Exchange exchange) throws Exception {
038            if (predicate.matches(exchange)) {
039                super.process(exchange);
040            }
041        }
042    
043        @Override
044        public String toString() {
045            return "Filter[if: " + predicate + " do: " + getProcessor() + "]";
046        }
047    
048        public Predicate<Exchange> getPredicate() {
049            return predicate;
050        }
051    }