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.TypeConverter;
026 import org.apache.camel.builder.ExpressionBuilder;
027
028 /**
029 * Represents the strategy used to figure out how to map a message exchange to a POJO method invocation
030 *
031 * @version $Revision: 766610 $
032 */
033 public class DefaultParameterMappingStrategy implements ParameterMappingStrategy {
034 private final Map<Class, Expression> parameterTypeToExpressionMap = new ConcurrentHashMap<Class, Expression>();
035
036 public DefaultParameterMappingStrategy() {
037 loadDefaultRegistry();
038 }
039
040 public Expression getDefaultParameterTypeExpression(Class parameterType) {
041 return parameterTypeToExpressionMap.get(parameterType);
042 }
043
044 /**
045 * Adds a default parameter type mapping to an expression
046 */
047 public void addParameterMapping(Class parameterType, Expression expression) {
048 parameterTypeToExpressionMap.put(parameterType, expression);
049 }
050
051 public void loadDefaultRegistry() {
052 addParameterMapping(Exchange.class, ExpressionBuilder.exchangeExpression());
053 addParameterMapping(Message.class, ExpressionBuilder.inMessageExpression());
054 addParameterMapping(Exception.class, ExpressionBuilder.exchangeExceptionExpression());
055 addParameterMapping(TypeConverter.class, ExpressionBuilder.typeConverterExpression());
056 }
057
058 }