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.component.bean; 018 019 import java.util.Map; 020 import java.util.concurrent.ConcurrentHashMap; 021 022 import org.apache.camel.Exchange; 023 import org.apache.camel.Expression; 024 import org.apache.camel.Message; 025 import org.apache.camel.builder.ExpressionBuilder; 026 027 /** 028 * Represents the strategy used to figure out how to map a message exchange to a POJO method invocation 029 * 030 * @version $Revision: 919 $ 031 */ 032 public class DefaultParameterMappingStrategy implements ParameterMappingStrategy { 033 private Map<Class, Expression> parameterTypeToExpressionMap = new ConcurrentHashMap<Class, Expression>(); 034 035 public DefaultParameterMappingStrategy() { 036 loadDefaultRegistry(); 037 } 038 039 public synchronized Expression getDefaultParameterTypeExpression(Class parameterType) { 040 Expression expression = parameterTypeToExpressionMap.get(parameterType); 041 042 return expression; 043 } 044 045 /** 046 * Adds a default parameter type mapping to an expression 047 */ 048 public synchronized void addParameterMapping(Class parameterType, Expression expression) { 049 parameterTypeToExpressionMap.put(parameterType, expression); 050 } 051 052 /** 053 * Creates an invocation on the given POJO using annotations to decide which method to invoke 054 * and to figure out which parameters to use 055 */ 056 /* 057 public MethodInvocation createInvocation(Object pojo, 058 BeanInfo beanInfo, 059 Exchange messageExchange, 060 Endpoint pojoEndpoint) throws RuntimeCamelException { 061 return beanInfo.createInvocation(pojo, messageExchange); 062 } 063 */ 064 public void loadDefaultRegistry() { 065 addParameterMapping(Exchange.class, ExpressionBuilder.exchangeExpression()); 066 addParameterMapping(Message.class, ExpressionBuilder.inMessageExpression()); 067 } 068 }