/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.stat.internal;

import java.util.Collections;
import java.util.Set;

import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.stat.SessionStatistics;

/**
 * @author Gavin King
 */
public class SessionStatisticsImpl implements SessionStatistics {

	private final SessionImplementor session;
	
	public SessionStatisticsImpl(SessionImplementor session) {
		this.session = session;
	}

	public int getEntityCount() {
		return session.getPersistenceContext().getEntityEntries().size();
	}
	
	public int getCollectionCount() {
		return session.getPersistenceContext().getCollectionEntries().size();
	}
	
	public Set getEntityKeys() {
		return Collections.unmodifiableSet( session.getPersistenceContext().getEntitiesByKey().keySet() );
	}
	
	public Set getCollectionKeys() {
		return Collections.unmodifiableSet( session.getPersistenceContext().getCollectionsByKey().keySet() );
	}
	
	public String toString() {
		return new StringBuilder()
			.append("SessionStatistics[")
			.append("entity count=").append( getEntityCount() )
			.append("collection count=").append( getCollectionCount() )
			.append(']')
			.toString();
	}

}