/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2010-2011 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.dialect.infinispan;
import static org.hibernate.ogm.datastore.spi.DefaultDatastoreNames.ENTITY_STORE;
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.datastore.infinispan.impl.InfinispanDatastoreProvider;
import org.hibernate.ogm.datastore.spi.DatastoreProvider;
import org.hibernate.ogm.grid.EntityKey;
import org.hibernate.ogm.persister.EntityKeyBuilder;
import org.hibernate.ogm.persister.OgmEntityPersister;
import org.hibernate.ogm.type.GridType;
import org.hibernate.ogm.type.TypeTranslator;
import org.hibernate.ogm.util.impl.Log;
import org.hibernate.ogm.util.impl.LoggerFactory;
import org.hibernate.persister.entity.Lockable;
import org.infinispan.AdvancedCache;
/**
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public class InfinispanPessimisticWriteLockingStrategy implements LockingStrategy {
private static final Log log = LoggerFactory.make();
protected final GridType identifierGridType;
private volatile InfinispanDatastoreProvider provider;
private final LockMode lockMode;
private final Lockable lockable;
public InfinispanPessimisticWriteLockingStrategy(Lockable lockable, LockMode lockMode) {
this.lockMode = lockMode;
this.lockable = lockable;
TypeTranslator typeTranslator = lockable.getFactory().getServiceRegistry().getService( TypeTranslator.class );
this.identifierGridType = typeTranslator.getType( lockable.getIdentifierType() );
}
@Override
public void lock(Serializable id, Object version, Object object, int timeout, SessionImplementor session)
throws StaleObjectStateException, JDBCException {
AdvancedCache advCache = getProvider( session ).getCache( ENTITY_STORE ).getAdvancedCache();
EntityKey key = EntityKeyBuilder.fromData(
( (OgmEntityPersister) lockable).getRootEntityKeyMetadata(),
identifierGridType,
id,
session );
advCache.lock( key );
//FIXME check the version number as well and raise an optimistic lock exception if there is an issue JPA 2 spec: 3.4.4.2
}
private InfinispanDatastoreProvider getProvider(SessionImplementor session) {
if ( provider == null ) {
DatastoreProvider service = session.getFactory().getServiceRegistry().getService( DatastoreProvider.class );
if ( service instanceof InfinispanDatastoreProvider ) {
provider = InfinispanDatastoreProvider.class.cast( service );
}
else {
log.unexpectedDatastoreProvider( service.getClass(), InfinispanDatastoreProvider.class );
}
}
return provider;
}
}