/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2007, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.cache.jbc.entity;
import org.jboss.cache.Cache;
import org.jboss.cache.Fqn;
import org.jboss.cache.config.Configuration.NodeLockingScheme;
import org.jboss.cache.notifications.annotation.CacheListener;
import org.hibernate.cache.CacheDataDescription;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.EntityRegion;
import org.hibernate.cache.access.AccessType;
import org.hibernate.cache.access.EntityRegionAccessStrategy;
import org.hibernate.cache.jbc.TransactionalDataRegionAdapter;
import org.hibernate.cache.jbc.access.PutFromLoadValidator;
/**
* Defines the behavior of the entity cache regions for JBossCache.
*
* @author Steve Ebersole
*/
@CacheListener
public class EntityRegionImpl extends TransactionalDataRegionAdapter implements EntityRegion {
public static final String TYPE = "ENTITY";
private boolean optimistic;
public EntityRegionImpl(Cache jbcCache, String regionName, String regionPrefix, CacheDataDescription metadata) {
super(jbcCache, regionName, regionPrefix, metadata);
optimistic = (jbcCache.getConfiguration().getNodeLockingScheme() == NodeLockingScheme.OPTIMISTIC);
}
/**
* {@inheritDoc}
*/
public EntityRegionAccessStrategy buildAccessStrategy(AccessType accessType) throws CacheException {
if (AccessType.READ_ONLY.equals(accessType)) {
return optimistic ? new OptimisticReadOnlyAccess(this) : new ReadOnlyAccess(this);
}
if (AccessType.TRANSACTIONAL.equals(accessType)) {
return optimistic ? new OptimisticTransactionalAccess(this) : new TransactionalAccess(this);
}
// todo : add support for READ_WRITE ( + NONSTRICT_READ_WRITE ??? )
throw new CacheException("unsupported access type [" + accessType.getName() + "]");
}
@Override
protected Fqn<String> createRegionFqn(String regionName, String regionPrefix) {
return getTypeLastRegionFqn(regionName, regionPrefix, TYPE);
}
public PutFromLoadValidator getPutFromLoadValidator() {
return new PutFromLoadValidator(transactionManager);
}
}