/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.servicemix.bean.support;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.servicemix.expression.Expression;
import org.apache.servicemix.bean.BeanEndpoint;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.xml.transform.Source;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Represents the strategy used to figure out how to map a JBI message exchange to a POJO method invocation
*
* @version $Revision: $
* @org.apache.xbean.XBean element="defaultMethodInvocationStrategy" description="The default strategy for invoking methods on POJOs from a JBI message exchange"
*/
public class DefaultMethodInvocationStrategy implements MethodInvocationStrategy {
private Map<Class, Expression> parameterTypeToExpressionMap = new ConcurrentHashMap<Class, Expression>();
public DefaultMethodInvocationStrategy() {
loadDefaultRegistry();
}
public Expression getDefaultParameterTypeExpression(Class parameterType) {
return parameterTypeToExpressionMap.get(parameterType);
}
/**
* Adds a default parameter type mapping to an expression
*/
public void addParameterMapping(Class parameterType, Expression expression) {
parameterTypeToExpressionMap.put(parameterType, expression);
}
/**
* Creates an invocation on the given POJO using annotations to decide which method to invoke
* and to figure out which parameters to use
*/
public MethodInvocation createInvocation(Object pojo, BeanInfo beanInfo, MessageExchange messageExchange, BeanEndpoint pojoEndpoint) throws MessagingException {
return beanInfo.createInvocation(pojo, messageExchange);
}
protected void loadDefaultRegistry() {
addParameterMapping(MessageExchange.class, new Expression() {
public Object evaluate(MessageExchange messageExchange, NormalizedMessage normalizedMessage) throws MessagingException {
return messageExchange;
}
});
addParameterMapping(NormalizedMessage.class, new Expression() {
public Object evaluate(MessageExchange messageExchange, NormalizedMessage normalizedMessage) throws MessagingException {
return normalizedMessage;
}
});
addParameterMapping(Source.class, new Expression() {
public Object evaluate(MessageExchange messageExchange, NormalizedMessage normalizedMessage) throws MessagingException {
return normalizedMessage.getContent();
}
});
}
}