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: 679753 $
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 }