/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.server.util;
import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import javax.persistence.EntityManager;
import org.hibernate.stat.Statistics;
import org.rhq.core.domain.server.PersistenceUtility;
/**
* @author Joseph Marques
*/
public class HibernateStatisticsStopWatch {
private Statistics stats;
long queryExecutions; // Get global number of executed queries
long transations; // The number of transactions we know to have completed
long entityLoads; // Get global number of entity loads
long connects; // Get the global number of connections asked by the sessions
long time;
public HibernateStatisticsStopWatch(EntityManager entityManager) {
MBeanServer platformMBeanServer = ManagementFactory.getPlatformMBeanServer();
this.stats = PersistenceUtility.getStatisticsService(entityManager, platformMBeanServer);
}
public void start() {
//stats.clear();
queryExecutions = -stats.getQueryExecutionCount();
transations = -stats.getTransactionCount();
entityLoads = -stats.getEntityLoadCount();
connects = -stats.getConnectCount();
time = -System.currentTimeMillis();
}
public void stop() {
queryExecutions += stats.getQueryExecutionCount();
transations += stats.getTransactionCount();
entityLoads += stats.getEntityLoadCount();
connects += stats.getConnectCount();
time += System.currentTimeMillis();
}
public Statistics getStats() {
return stats;
}
public long getQueryExecutions() {
return queryExecutions;
}
public long getTransations() {
return transations;
}
public long getEntityLoads() {
return entityLoads;
}
public long getConnects() {
return connects;
}
public long getTime() {
return time;
}
public String toString() {
return "HibernateStats" //
+ "[ queries=" + queryExecutions //
+ ", xactions=" + transations //
+ ", loads=" + entityLoads //
+ ", connects=" + connects //
+ ", time=" + time + " ]";
}
}