KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jboss > ejb3 > stateless > StatelessRemoteProxy


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.ejb3.stateless;
23
24 import java.lang.reflect.Method JavaDoc;
25 import java.lang.reflect.Proxy JavaDoc;
26 import org.jboss.aop.Dispatcher;
27 import org.jboss.aop.advice.Interceptor;
28 import org.jboss.aop.joinpoint.MethodInvocation;
29 import org.jboss.aop.util.MethodHashing;
30 import org.jboss.aop.util.PayloadKey;
31 import org.jboss.aspects.asynch.AsynchMixin;
32 import org.jboss.aspects.asynch.AsynchProvider;
33 import org.jboss.aspects.remoting.InvokeRemoteInterceptor;
34 import org.jboss.ejb3.ProxyUtils;
35 import org.jboss.ejb3.asynchronous.AsynchronousInterceptor;
36 import org.jboss.logging.Logger;
37 import org.jboss.remoting.InvokerLocator;
38
39 /**
40  * Comment
41  *
42  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
43  * @version $Revision: 39814 $
44  */
45 public class StatelessRemoteProxy extends org.jboss.ejb3.session.BaseSessionRemoteProxy
46 {
47    private static final Logger log = Logger.getLogger(StatelessRemoteProxy.class);
48    
49    protected InvokerLocator uri;
50    AsynchProvider provider;
51
52    public StatelessRemoteProxy(Object JavaDoc containerId, Interceptor[] interceptors, InvokerLocator uri)
53    {
54       super(containerId, interceptors);
55       this.uri = uri;
56    }
57
58    public StatelessRemoteProxy(AsynchProvider provider, Object JavaDoc containerId, Interceptor[] interceptors, InvokerLocator uri)
59    {
60       super(containerId, interceptors);
61       this.uri = uri;
62       this.provider = provider;
63    }
64
65    protected StatelessRemoteProxy()
66    {
67    }
68
69
70    public Object JavaDoc invoke(Object JavaDoc proxy, Method JavaDoc method, Object JavaDoc[] args)
71            throws Throwable JavaDoc
72    {
73       if (method.getDeclaringClass() == AsynchProvider.class)
74       {
75          return provider.getFuture();
76       }
77
78       long hash = MethodHashing.calculateHash(method);
79       Object JavaDoc ret = ProxyUtils.handleCallLocally(hash, proxy, this, method, args);
80       if (ret != null)
81       {
82          return ret;
83       }
84       
85       ret = handleEjb21CallLocally(method, args);
86       if (ret != null)
87       {
88          return ret;
89       }
90
91       MethodInvocation sri = new MethodInvocation(interceptors, hash, method, method, null);
92       sri.setArguments(args);
93       sri.setInstanceResolver(metadata);
94       sri.getMetaData().addMetaData(Dispatcher.DISPATCHER, Dispatcher.OID, containerId, PayloadKey.AS_IS);
95       sri.getMetaData().addMetaData(InvokeRemoteInterceptor.REMOTING, InvokeRemoteInterceptor.INVOKER_LOCATOR, uri, PayloadKey.AS_IS);
96       sri.getMetaData().addMetaData(InvokeRemoteInterceptor.REMOTING, InvokeRemoteInterceptor.SUBSYSTEM, "AOP", PayloadKey.AS_IS);
97
98       if (provider != null)
99       {
100          sri.getMetaData().addMetaData(AsynchronousInterceptor.ASYNCH, AsynchronousInterceptor.INVOKE_ASYNCH, "YES", PayloadKey.AS_IS);
101       }
102       return sri.invokeNext();
103    }
104
105    public Object JavaDoc getAsynchronousProxy(Object JavaDoc proxy)
106    {
107       Class JavaDoc[] infs = proxy.getClass().getInterfaces();
108       if (!ProxyUtils.isAsynchronous(infs))
109       {
110          Class JavaDoc[] interfaces = ProxyUtils.addAsynchProviderInterface(infs);
111          AsynchMixin mixin = new AsynchMixin();
112          Interceptor[] newInterceptors = ProxyUtils.addAsynchProxyInterceptor(mixin, interceptors);
113          StatelessRemoteProxy handler = new StatelessRemoteProxy(mixin, containerId, newInterceptors, uri);
114          return Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(), interfaces, handler);
115       }
116
117       //I was already asynchronous
118 return proxy;
119    }
120
121    public String JavaDoc toString()
122    {
123       return containerId.toString();
124    }
125    
126    private Object JavaDoc handleEjb21CallLocally(Method JavaDoc method, Object JavaDoc[] args)
127    {
128       if (method.equals(ProxyUtils.GET_HOME_HANDLE))
129       {
130          return homeHandle;
131       } else if (method.equals(ProxyUtils.GET_EJB_METADATA))
132       {
133          return ejbMetaData;
134       } else if (method.equals(ProxyUtils.GET_HANDLE))
135       {
136          return handle;
137       }
138       
139       return null;
140    }
141 }
142
Popular Tags