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.spring.util;
018
019 import org.aopalliance.intercept.MethodInvocation;
020 import org.apache.camel.Exchange;
021 import org.apache.camel.Expression;
022
023 import java.lang.reflect.AccessibleObject;
024 import java.lang.reflect.InvocationTargetException;
025 import java.lang.reflect.Method;
026
027 /**
028 * @version $Revision: $
029 */
030 public class MethodInfo {
031 private Class type;
032 private Method method;
033 private Expression parametersExpression;
034
035 public MethodInfo(Class type, Method method, Expression parametersExpression) {
036 this.type = type;
037 this.method = method;
038 this.parametersExpression = parametersExpression;
039 }
040
041 public MethodInvocation createMethodInvocation(final Object pojo, final Exchange messageExchange) {
042 final Object[] arguments = (Object[]) parametersExpression.evaluate(messageExchange);
043 return new MethodInvocation() {
044 public Method getMethod() {
045 return method;
046 }
047
048 public Object[] getArguments() {
049 return arguments;
050 }
051
052 public Object proceed() throws Throwable {
053 return invoke(method, pojo, arguments, messageExchange);
054 }
055
056 public Object getThis() {
057 return pojo;
058 }
059
060 public AccessibleObject getStaticPart() {
061 return method;
062 }
063 };
064 }
065
066 public Class getType() {
067 return type;
068 }
069
070 public Method getMethod() {
071 return method;
072 }
073
074 public Expression getParametersExpression() {
075 return parametersExpression;
076 }
077
078 protected Object invoke(Method mth, Object pojo, Object[] arguments, Exchange exchange) throws IllegalAccessException, InvocationTargetException {
079 return mth.invoke(pojo, arguments);
080 }
081 }