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.io.Externalizable; 020 import java.io.IOException; 021 import java.io.ObjectInput; 022 import java.io.ObjectOutput; 023 import java.lang.reflect.InvocationTargetException; 024 import java.lang.reflect.Method; 025 import java.util.Arrays; 026 027 import org.apache.camel.Exchange; 028 import org.apache.camel.util.IOHelper; 029 import org.apache.camel.util.ObjectHelper; 030 031 public class BeanInvocation implements Externalizable { 032 private Object[] args; 033 private MethodBean methodBean; 034 private transient Method method; 035 036 public BeanInvocation() { 037 } 038 039 public BeanInvocation(Method method, Object[] args) { 040 this.method = method; 041 this.args = args; 042 } 043 044 @Override 045 public String toString() { 046 Object list = null; 047 if (args != null) { 048 list = Arrays.asList(args); 049 } 050 return "BeanInvocation " + method + " with " + list + "]"; 051 } 052 053 public Object[] getArgs() { 054 return args; 055 } 056 057 public Method getMethod() { 058 return method; 059 } 060 061 public void setMethod(Method method) { 062 this.method = method; 063 } 064 065 public void setArgs(Object[] args) { 066 this.args = args; 067 } 068 069 /** 070 * This causes us to invoke the endpoint Pojo using reflection. 071 * 072 * @param pojo the bean on which to perform this invocation 073 * @param exchange the exchange carrying the method invocation 074 */ 075 public void invoke(Object pojo, Exchange exchange) { 076 try { 077 Object response = getMethod().invoke(pojo, getArgs()); 078 exchange.getOut().setBody(response); 079 } catch (InvocationTargetException e) { 080 exchange.setException(e.getCause()); 081 } catch (RuntimeException e) { 082 throw e; 083 } catch (Throwable e) { 084 throw new RuntimeException(e); 085 } 086 } 087 088 public void readExternal(ObjectInput objectInput) throws IOException, ClassNotFoundException { 089 methodBean = ObjectHelper.cast(MethodBean.class, objectInput.readObject()); 090 try { 091 method = methodBean.getMethod(); 092 } catch (NoSuchMethodException e) { 093 throw IOHelper.createIOException(e); 094 } 095 args = ObjectHelper.cast(Object[].class, objectInput.readObject()); 096 } 097 098 public void writeExternal(ObjectOutput objectOutput) throws IOException { 099 if (methodBean == null) { 100 methodBean = new MethodBean(method); 101 } 102 objectOutput.writeObject(methodBean); 103 objectOutput.writeObject(args); 104 } 105 }