01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * 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.naming.interceptors;
23:
24: import javax.management.MBeanServer;
25: import javax.management.ObjectName;
26:
27: import org.jboss.logging.Logger;
28: import org.jboss.mx.interceptor.AbstractInterceptor;
29: import org.jboss.mx.server.Invocation;
30: import org.jboss.mx.util.MBeanServerLocator;
31: import org.jnp.interfaces.Naming;
32: import org.jnp.interfaces.NamingContext;
33:
34: /** An interceptor that replaces any NamingContext values returned with the
35: * proxy found as the Proxy attribute of the mbean given by proxyName.
36: *
37: * @author Scott.Stark@jboss.org
38: * @version $Revision: 57209 $
39: */
40: public class ProxyFactoryInterceptor extends AbstractInterceptor {
41: private static Logger log = Logger
42: .getLogger(ProxyFactoryInterceptor.class);
43: private String proxyName;
44: private Naming proxy;
45:
46: public void setProxyName(String proxyName) {
47: this .proxyName = proxyName;
48: }
49:
50: // Interceptor overrides -----------------------------------------
51: public Object invoke(Invocation invocation) throws Throwable {
52: Object value = invocation.nextInterceptor().invoke(invocation);
53: if (value instanceof NamingContext) {
54: initNamingProxy();
55: NamingContext ctx = (NamingContext) value;
56: ctx.setNaming(proxy);
57: }
58: return value;
59: }
60:
61: /** This is not synchronized as we don't care if the proxy object might
62: * get lookedup more than once on initialization
63: * @throws Exception
64: */
65: private void initNamingProxy() throws Exception {
66: if (proxy != null)
67: return;
68:
69: ObjectName proxyFactory = new ObjectName(proxyName);
70: MBeanServer server = MBeanServerLocator.locateJBoss();
71: proxy = (Naming) server.getAttribute(proxyFactory, "Proxy");
72: }
73: }
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