/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.system;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.jboss.logging.Logger;
/**
* A registry, really, a registry.
*
* <p>All methods static to lookup pointers from anyplace in the VM.
* We use it for hooking up JMX managed objects. Use the JMX MBeanName
* to put objects here.
*
* @author <a href="mailto:marc.fleury@jboss.org>Marc Fleury</a>
* @version $Revision: 106922 $
*/
public class Registry
{
private static final Logger log = Logger.getLogger(Registry.class);
public static Map<Object, Object> entries = new ConcurrentHashMap<Object, Object>();
// Permission required to bind/unbind would be RuntimePermission "org.jboss.system.Registry"
private static RuntimePermission perm = new RuntimePermission( Registry.class.getName() );
public static void bind(final Object key, final Object value)
{
SecurityManager securityManager = System.getSecurityManager();
if( securityManager != null )
{
securityManager.checkPermission( perm );
}
entries.put(key, value);
if(log.isTraceEnabled())
log.trace("bound " + key + "=" + value);
}
public static Object unbind(final Object key)
{
SecurityManager securityManager = System.getSecurityManager();
if( securityManager != null )
{
securityManager.checkPermission( perm );
}
Object obj = entries.remove(key);
if(log.isTraceEnabled())
log.trace("unbound " + key + "=" + obj);
return obj;
}
public static Object lookup(final Object key)
{
Object obj = entries.get(key);
if(log.isTraceEnabled())
log.trace("lookup " + key + "=" + obj);
return obj;
}
}