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Integration for Infinispan into Hibernate as a second-level caching service

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2013, 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.cache.infinispan.naturalid;

import org.hibernate.cache.CacheException;
import org.hibernate.cache.infinispan.access.PutFromLoadValidator;
import org.hibernate.cache.infinispan.impl.BaseTransactionalDataRegion;
import org.hibernate.cache.spi.CacheDataDescription;
import org.hibernate.cache.spi.NaturalIdRegion;
import org.hibernate.cache.spi.RegionFactory;
import org.hibernate.cache.spi.access.AccessType;
import org.hibernate.cache.spi.access.NaturalIdRegionAccessStrategy;

import org.infinispan.AdvancedCache;

/**
 * Natural ID cache region
 *
 * @author Strong Liu 
 * @author Galder Zamarreño
 */
public class NaturalIdRegionImpl extends BaseTransactionalDataRegion
		implements NaturalIdRegion {

   /**
    * Constructor for the natural id region.
    *
    * @param cache instance to store natural ids
    * @param name of natural id region
    * @param metadata for the natural id region
    * @param factory for the natural id region
    */
	public NaturalIdRegionImpl(
			AdvancedCache cache, String name,
			CacheDataDescription metadata, RegionFactory factory) {
		super( cache, name, metadata, factory );
	}

	@Override
	public NaturalIdRegionAccessStrategy buildAccessStrategy(AccessType accessType) throws CacheException {
		switch ( accessType ) {
			case READ_ONLY:
				return new ReadOnlyAccess( this );
			case TRANSACTIONAL:
				return new TransactionalAccess( this );
			default:
				throw new CacheException( "Unsupported access type [" + accessType.getExternalName() + "]" );
		}
	}

	public PutFromLoadValidator getPutFromLoadValidator() {
		return new PutFromLoadValidator( cache );
	}

}