/*
* Hibernate OGM, Domain model persistence for NoSQL datastores
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.ogm.datastore.infinispan.dialect.impl;
import static org.hibernate.ogm.datastore.infinispan.impl.CacheNames.ENTITY_CACHE;
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.model.impl.EntityKeyBuilder;
import org.hibernate.ogm.model.key.spi.EntityKey;
import org.hibernate.ogm.persister.impl.OgmEntityPersister;
import org.hibernate.ogm.type.spi.GridType;
import org.hibernate.ogm.type.spi.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_CACHE ).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;
}
}