/* 
 * Hibernate, Relational Persistence for Idiomatic Java
 * 
 * JBoss, Home of Professional Open Source
 * Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
 * as indicated by the @authors tag. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * 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,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package org.hibernate.ogm.datastore.map.impl;

import java.io.Serializable;

import org.hibernate.JDBCException;
import org.hibernate.LockMode;
import org.hibernate.StaleObjectStateException;
import org.hibernate.dialect.lock.LockingStrategy;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.ogm.grid.EntityKey;
import org.hibernate.ogm.persister.EntityKeyBuilder;
import org.hibernate.persister.entity.Lockable;

/**
 * @author Sanne Grinovero <sanne@hibernate.org> (C) 2011 Red Hat Inc.
 * @author Emmanuel Bernard <emmanuel@hibernate.org>
 */
public class MapPessimisticReadLockingStrategy extends MapPessimisticWriteLockingStrategy implements LockingStrategy {

	public MapPessimisticReadLockingStrategy(Lockable lockable, LockMode lockMode) {
		super( lockable, lockMode );
	}

	@Override
	public void lock(Serializable id, Object version, Object object, int timeout, SessionImplementor session) throws StaleObjectStateException, JDBCException {
		MapDatastoreProvider dataStore = getProvider( session );
		EntityKey key = EntityKeyBuilder.fromData(
				lockable.getRootTableName(),
				lockable.getRootTableIdentifierColumnNames(),
				identifierGridType,
				id,
				session );
		dataStore.readLock( key, timeout );
	}
}