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.CamelContext;
023 import org.apache.camel.Exchange;
024 import org.apache.camel.Expression;
025 import org.apache.camel.Message;
026 import org.apache.camel.TypeConverter;
027 import org.apache.camel.builder.ExpressionBuilder;
028 import org.apache.camel.spi.Registry;
029
030 /**
031 * Represents the strategy used to figure out how to map a message exchange to a POJO method invocation
032 *
033 * @version $Revision: 789062 $
034 */
035 public class DefaultParameterMappingStrategy implements ParameterMappingStrategy {
036 private final Map<Class, Expression> parameterTypeToExpressionMap = new ConcurrentHashMap<Class, Expression>();
037
038 public DefaultParameterMappingStrategy() {
039 loadDefaultRegistry();
040 }
041
042 public Expression getDefaultParameterTypeExpression(Class parameterType) {
043 return parameterTypeToExpressionMap.get(parameterType);
044 }
045
046 /**
047 * Adds a default parameter type mapping to an expression
048 */
049 public void addParameterMapping(Class parameterType, Expression expression) {
050 parameterTypeToExpressionMap.put(parameterType, expression);
051 }
052
053 public void loadDefaultRegistry() {
054 addParameterMapping(Exchange.class, ExpressionBuilder.exchangeExpression());
055 addParameterMapping(Message.class, ExpressionBuilder.inMessageExpression());
056 addParameterMapping(Exception.class, ExpressionBuilder.exchangeExceptionExpression());
057 addParameterMapping(TypeConverter.class, ExpressionBuilder.typeConverterExpression());
058 addParameterMapping(Registry.class, ExpressionBuilder.registryExpression());
059 addParameterMapping(CamelContext.class, ExpressionBuilder.camelContextExpression());
060 }
061
062 }