package org.hibernate.cache.impl.bridge;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.hibernate.cache.CollectionRegion;
import org.hibernate.cache.Cache;
import org.hibernate.cache.CacheDataDescription;
import org.hibernate.cache.OptimisticCache;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.CacheConcurrencyStrategy;
import org.hibernate.cache.TransactionalCache;
import org.hibernate.cache.ReadWriteCache;
import org.hibernate.cache.NonstrictReadWriteCache;
import org.hibernate.cache.ReadOnlyCache;
import org.hibernate.cache.access.CollectionRegionAccessStrategy;
import org.hibernate.cache.access.AccessType;
import org.hibernate.cfg.Settings;
/**
* Adapter specifically bridging {@link CollectionRegion} to {@link Cache}.
*
* @author Steve Ebersole
*/
public class CollectionRegionAdapter extends BaseTransactionalDataRegionAdapter implements CollectionRegion {
private static final Logger log = LoggerFactory.getLogger( CollectionRegionAdapter.class );
public CollectionRegionAdapter(Cache underlyingCache, Settings settings, CacheDataDescription metadata) {
super( underlyingCache, settings, metadata );
if ( underlyingCache instanceof OptimisticCache ) {
( ( OptimisticCache ) underlyingCache ).setSource( new OptimisticCacheSourceAdapter( metadata ) );
}
}
public CollectionRegionAccessStrategy buildAccessStrategy(AccessType accessType) throws CacheException {
CacheConcurrencyStrategy ccs;
if ( AccessType.READ_ONLY.equals( accessType ) ) {
if ( metadata.isMutable() ) {
log.warn( "read-only cache configured for mutable collection [" + getName() + "]" );
}
ccs = new ReadOnlyCache();
}
else if ( AccessType.READ_WRITE.equals( accessType ) ) {
ccs = new ReadWriteCache();
}
else if ( AccessType.NONSTRICT_READ_WRITE.equals( accessType ) ) {
ccs = new NonstrictReadWriteCache();
}
else if ( AccessType.TRANSACTIONAL.equals( accessType ) ) {
ccs = new TransactionalCache();
}
else {
throw new IllegalArgumentException( "unrecognized access strategy type [" + accessType + "]" );
}
ccs.setCache( underlyingCache );
return new CollectionAccessStrategyAdapter( this, ccs, settings );
}
}