| /* |
| * Copyright (c) 2008, Rickard Öberg. All Rights Reserved. |
| * |
| * Licensed 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.qi4j.runtime.composite; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.util.List; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class SideEffectsInstance |
| implements InvocationHandler |
| { |
| private final List<InvocationHandler> sideEffects; |
| private final SideEffectInvocationHandlerResult resultInvocationHandler; |
| private final ProxyReferenceInvocationHandler proxyHandler; |
| private InvocationHandler invoker; |
| |
| public SideEffectsInstance( List<InvocationHandler> sideEffects, |
| SideEffectInvocationHandlerResult resultInvocationHandler, |
| ProxyReferenceInvocationHandler proxyHandler, |
| InvocationHandler invoker |
| ) |
| { |
| this.sideEffects = sideEffects; |
| this.resultInvocationHandler = resultInvocationHandler; |
| this.proxyHandler = proxyHandler; |
| this.invoker = invoker; |
| } |
| |
| @Override |
| public Object invoke( Object proxy, Method method, Object[] args ) |
| throws Throwable |
| { |
| try |
| { |
| Object result = invoker.invoke( proxy, method, args ); |
| invokeSideEffects( proxy, method, args, result, null ); |
| return result; |
| } |
| catch( Throwable throwable ) |
| { |
| invokeSideEffects( proxy, method, args, null, throwable ); |
| throw throwable; |
| } |
| } |
| |
| private void invokeSideEffects( Object proxy, |
| Method method, |
| Object[] params, |
| Object result, |
| Throwable originalThrowable |
| ) |
| throws Throwable |
| { |
| proxyHandler.setProxy( proxy ); |
| resultInvocationHandler.setResult( result, originalThrowable ); |
| |
| try |
| { |
| for( InvocationHandler sideEffect : sideEffects ) |
| { |
| try |
| { |
| sideEffect.invoke( proxy, method, params ); |
| } |
| catch( Throwable throwable ) |
| { |
| if( throwable != originalThrowable ) |
| { |
| throwable.printStackTrace(); |
| } |
| } |
| } |
| } |
| finally |
| { |
| proxyHandler.clearProxy(); |
| resultInvocationHandler.setResult( null, null ); |
| } |
| } |
| } |