| /** |
| * 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.openejb.util.proxy; |
| |
| import org.apache.openejb.BeanContext; |
| import org.apache.openejb.RpcContainer; |
| import org.apache.openejb.core.ivm.IntraVmProxy; |
| |
| import java.io.Serializable; |
| import java.lang.ref.WeakReference; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Proxy; |
| |
| public class ProxyEJB { |
| private ProxyEJB() { |
| // no-op |
| } |
| |
| public static Object subclassProxy(final BeanContext beanContext) { |
| try { |
| return LocalBeanProxyFactory.newProxyInstance(beanContext.getModuleContext().getClassLoader(), new Handler(beanContext), |
| beanContext.getBeanClass(), IntraVmProxy.class, Serializable.class); |
| } catch (InternalError ie) { // try without intravmproxy which is maybe not loadable (in OSGi it can happen) |
| return LocalBeanProxyFactory.newProxyInstance(beanContext.getModuleContext().getClassLoader(), new Handler(beanContext), |
| beanContext.getBeanClass(), Serializable.class); |
| } |
| } |
| |
| // same as proxy() but it doesn't add IvmProxy and Serializable interfaces (use in bridges proxies like OSGi services) |
| public static Object simpleProxy(final BeanContext beanContext, final Class<?>[] itfs) { |
| if (beanContext.isLocalbean()) { |
| return LocalBeanProxyFactory.newProxyInstance(itfs[0].getClassLoader(), new Handler(beanContext), itfs[0]); |
| } |
| return Proxy.newProxyInstance(itfs[0].getClassLoader(), itfs, new Handler(beanContext)); |
| } |
| |
| public static Object proxy(final BeanContext beanContext, final Class<?>[] itfs) { |
| if (beanContext.isLocalbean()) { |
| return LocalBeanProxyFactory.newProxyInstance(itfs[0].getClassLoader(), new Handler(beanContext), itfs[0], IntraVmProxy.class, Serializable.class); |
| } |
| return Proxy.newProxyInstance(itfs[0].getClassLoader(), itfs, new Handler(beanContext)); |
| } |
| |
| private static class Handler implements BeanContextInvocationHandler { |
| |
| private transient WeakReference<BeanContext> beanContextRef; |
| private final Object deploymentID; |
| |
| public Handler(BeanContext bc) { |
| beanContextRef = new WeakReference<BeanContext>(bc); |
| deploymentID = bc.getDeploymentID(); |
| } |
| |
| @Override |
| public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { |
| final BeanContext beanContext = getBeanContext(); |
| final RpcContainer container = RpcContainer.class.cast(beanContext.getContainer()); |
| |
| return container.invoke(beanContext.getDeploymentID(), |
| beanContext.getInterfaceType(method.getDeclaringClass()), |
| method.getDeclaringClass(), method, args, null); |
| } |
| |
| |
| public BeanContext getBeanContext() { |
| BeanContext beanContext = beanContextRef.get(); |
| if (beanContext == null|| beanContext.isDestroyed()){ |
| beanContextRef.clear(); |
| throw new IllegalStateException("Bean '" + deploymentID + "' has been undeployed."); |
| } |
| return beanContext; |
| } |
| |
| } |
| } |