001/* 002 * Copyright 2002-2017 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.remoting.caucho; 018 019import org.springframework.aop.framework.ProxyFactory; 020import org.springframework.beans.factory.FactoryBean; 021import org.springframework.lang.Nullable; 022 023/** 024 * {@link FactoryBean} for Hessian proxies. Exposes the proxied service 025 * for use as a bean reference, using the specified service interface. 026 * 027 * <p>Hessian is a slim, binary RPC protocol. 028 * For information on Hessian, see the 029 * <a href="http://hessian.caucho.com">Hessian website</a> 030 * <b>Note: As of Spring 4.0, this proxy factory requires Hessian 4.0 or above.</b> 031 * 032 * <p>The service URL must be an HTTP URL exposing a Hessian service. 033 * For details, see the {@link HessianClientInterceptor} javadoc. 034 * 035 * @author Juergen Hoeller 036 * @since 13.05.2003 037 * @see #setServiceInterface 038 * @see #setServiceUrl 039 * @see HessianClientInterceptor 040 * @see HessianServiceExporter 041 * @see org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean 042 * @see org.springframework.remoting.rmi.RmiProxyFactoryBean 043 */ 044public class HessianProxyFactoryBean extends HessianClientInterceptor implements FactoryBean<Object> { 045 046 @Nullable 047 private Object serviceProxy; 048 049 050 @Override 051 public void afterPropertiesSet() { 052 super.afterPropertiesSet(); 053 this.serviceProxy = new ProxyFactory(getServiceInterface(), this).getProxy(getBeanClassLoader()); 054 } 055 056 057 @Override 058 @Nullable 059 public Object getObject() { 060 return this.serviceProxy; 061 } 062 063 @Override 064 public Class<?> getObjectType() { 065 return getServiceInterface(); 066 } 067 068 @Override 069 public boolean isSingleton() { 070 return true; 071 } 072 073}