/* 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 com.db4o.config.*; import com.db4o.diagnostic.*; import com.db4o.events.*; import com.db4o.internal.*; import com.db4o.internal.config.*; /** * publishes statistics about Queries to JMX. */ @decaf.Ignore(unlessCompatible=decaf.Platform.JDK15) public class QueryMonitoringSupport implements ConfigurationItem { public void apply(InternalObjectContainer container) { final Queries queries = Db4oMBeans.newQueriesMBean(container); final CommonConfiguration config = Db4oLegacyConfigurationBridge.asCommonConfiguration(container.configure()); config.diagnostic().addListener(new DiagnosticListener() { public void onDiagnostic(Diagnostic d) { if (d instanceof LoadedFromClassIndex) { queries.notifyClassIndexScan((LoadedFromClassIndex)d); } } }); final EventRegistry events = EventRegistryFactory.forObjectContainer(container); events.queryStarted().addListener(new EventListener4<QueryEventArgs>() { public void onEvent(Event4<QueryEventArgs> e, QueryEventArgs args) { queries.notifyQueryStarted(); } }); events.queryFinished().addListener(new EventListener4<QueryEventArgs>() { public void onEvent(Event4<QueryEventArgs> e, QueryEventArgs args) { queries.notifyQueryFinished(); } }); } public void prepare(Configuration configuration) { } }