| /* |
| * 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.apache.zest.runtime.composite; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class ConcernsInstance |
| implements InvocationHandler |
| { |
| private final InvocationHandler firstConcern; |
| private final FragmentInvocationHandler mixinInvocationHandler; |
| private final ProxyReferenceInvocationHandler proxyHandler; |
| |
| public ConcernsInstance( InvocationHandler firstConcern, |
| FragmentInvocationHandler mixinInvocationHandler, |
| ProxyReferenceInvocationHandler proxyHandler |
| ) |
| { |
| this.firstConcern = firstConcern; |
| this.mixinInvocationHandler = mixinInvocationHandler; |
| this.proxyHandler = proxyHandler; |
| } |
| |
| public boolean isEmpty() |
| { |
| return firstConcern == mixinInvocationHandler; |
| } |
| |
| @Override |
| public Object invoke( Object proxy, Method method, Object[] params ) |
| throws Throwable |
| { |
| proxyHandler.setProxy( proxy ); |
| try |
| { |
| return firstConcern.invoke( proxy, method, params ); |
| } |
| catch( InvocationTargetException e ) |
| { |
| throw e.getTargetException(); |
| } |
| finally |
| { |
| proxyHandler.clearProxy(); |
| } |
| } |
| } |