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.system.server;
23:
24: import javax.management.ObjectName;
25:
26: import org.jboss.mx.util.MBeanProxyExt;
27:
28: /**
29: * A helper for locating the {@link ServerConfig} instance
30: * for the running server.
31: *
32: * @version <tt>$Revision: 57205 $</tt>
33: * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
34: */
35: public class ServerConfigLocator {
36: private static volatile ServerConfig instance = null;
37:
38: public static ServerConfig locate() {
39: if (instance == null) {
40: instance = (ServerConfig) MBeanProxyExt.create(
41: ServerConfig.class,
42: ServerConfigImplMBean.OBJECT_NAME);
43: }
44:
45: return instance;
46: }
47: }
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