/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o 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 General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.monitoring;
import java.util.*;
import com.db4o.config.*;
import com.db4o.foundation.*;
import com.db4o.internal.*;
import com.db4o.internal.references.*;
import com.db4o.monitoring.internal.*;
/**
* Publishes statistics about the ReferenceSystem to JMX.
*/
@decaf.Ignore(unlessCompatible=decaf.Platform.JDK15)
public class ReferenceSystemMonitoringSupport implements ConfigurationItem {
private final static class MonitoringSupportReferenceSystemFactory implements ReferenceSystemFactory, DeepClone {
private final HashMap<String, com.db4o.monitoring.ReferenceSystem> _mBeans;
public MonitoringSupportReferenceSystemFactory() {
this(new HashMap<String, ReferenceSystem>());
}
private MonitoringSupportReferenceSystemFactory(HashMap<String, ReferenceSystem> mBeans) {
_mBeans = mBeans;
}
public com.db4o.internal.references.ReferenceSystem newReferenceSystem(InternalObjectContainer container) {
return new MonitoringReferenceSystem(mBeanFor(container));
}
private ReferenceSystemListener mBeanFor(InternalObjectContainer container) {
com.db4o.monitoring.ReferenceSystem mBean = _mBeans.get(container.toString());
if(mBean == null){
mBean = Db4oMBeans.newReferenceSystemMBean(container);
_mBeans.put(container.toString(), mBean);
}
return mBean;
}
public Object deepClone(Object context) {
return new MonitoringSupportReferenceSystemFactory(new HashMap<String, ReferenceSystem>(_mBeans));
}
}
public void apply(InternalObjectContainer container) {
}
public void prepare(Configuration configuration) {
((Config4Impl)configuration).referenceSystemFactory(new MonitoringSupportReferenceSystemFactory());
}
}