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.converter; 018 019import org.apache.camel.Converter; 020import org.apache.camel.Exchange; 021import org.apache.camel.Expression; 022import org.apache.camel.Message; 023import org.apache.camel.Predicate; 024import org.apache.camel.Processor; 025 026/** 027 * Some useful converters for Camel APIs such as to convert a {@link Predicate} or {@link Expression} 028 * to a {@link Processor} 029 * 030 * @version 031 */ 032@Converter 033public final class CamelConverter { 034 035 /** 036 * Utility classes should not have a public constructor. 037 */ 038 private CamelConverter() { 039 } 040 041 @Converter 042 public static Processor toProcessor(final Predicate predicate) { 043 return new Processor() { 044 public void process(Exchange exchange) throws Exception { 045 boolean answer = predicate.matches(exchange); 046 Message out = exchange.getOut(); 047 out.copyFrom(exchange.getIn()); 048 out.setBody(answer); 049 } 050 }; 051 052 } 053 054 @Converter 055 public static Processor toProcessor(final Expression expression) { 056 return new Processor() { 057 public void process(Exchange exchange) throws Exception { 058 Object answer = expression.evaluate(exchange, Object.class); 059 Message out = exchange.getOut(); 060 out.copyFrom(exchange.getIn()); 061 out.setBody(answer); 062 } 063 }; 064 } 065 066}