org.hibernate.testing.cache.BaseRegionAccessStrategy Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.testing.cache;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.spi.access.RegionAccessStrategy;
import org.hibernate.cache.spi.access.SoftLock;
import org.hibernate.engine.spi.SessionImplementor;
import org.jboss.logging.Logger;
/**
* @author Strong Liu
*/
abstract class BaseRegionAccessStrategy implements RegionAccessStrategy {
private static final Logger LOG = Logger.getLogger( BaseRegionAccessStrategy.class );
protected abstract BaseGeneralDataRegion getInternalRegion();
protected abstract boolean isDefaultMinimalPutOverride();
@Override
public Object get(SessionImplementor session, Object key, long txTimestamp) throws CacheException {
return getInternalRegion().get( session, key );
}
@Override
public boolean putFromLoad(SessionImplementor session, Object key, Object value, long txTimestamp, Object version) throws CacheException {
return putFromLoad(session, key, value, txTimestamp, version, isDefaultMinimalPutOverride() );
}
@Override
public boolean putFromLoad(SessionImplementor session, Object key, Object value, long txTimestamp, Object version, boolean minimalPutOverride)
throws CacheException {
if ( key == null || value == null ) {
return false;
}
if ( minimalPutOverride && getInternalRegion().contains( key ) ) {
LOG.debugf( "Item already cached: %s", key );
return false;
}
LOG.debugf( "Caching: %s", key );
getInternalRegion().put( session, key, value );
return true;
}
/**
* Region locks are not supported.
*
* @return null
*
* @see org.hibernate.cache.spi.access.EntityRegionAccessStrategy#lockRegion()
* @see org.hibernate.cache.spi.access.CollectionRegionAccessStrategy#lockRegion()
*/
@Override
public SoftLock lockRegion() throws CacheException {
return null;
}
/**
* Region locks are not supported - perform a cache clear as a precaution.
*
* @see org.hibernate.cache.spi.access.EntityRegionAccessStrategy#unlockRegion(org.hibernate.cache.spi.access.SoftLock)
* @see org.hibernate.cache.spi.access.CollectionRegionAccessStrategy#unlockRegion(org.hibernate.cache.spi.access.SoftLock)
*/
@Override
public void unlockRegion(SoftLock lock) throws CacheException {
evictAll();
}
@Override
public SoftLock lockItem(SessionImplementor session, Object key, Object version) throws CacheException {
return null;
}
@Override
public void unlockItem(SessionImplementor session, Object key, SoftLock lock) throws CacheException {
}
/**
* A no-op since this is an asynchronous cache access strategy.
*
* @see RegionAccessStrategy#remove(SessionImplementor, Object)
* @see RegionAccessStrategy#remove(SessionImplementor, Object)
*/
@Override
public void remove(SessionImplementor session, Object key) throws CacheException {
}
/**
* Called to evict data from the entire region
*
* @throws CacheException Propogated from underlying {@link org.hibernate.cache.spi.Region}
* @see org.hibernate.cache.spi.access.EntityRegionAccessStrategy#removeAll()
* @see org.hibernate.cache.spi.access.CollectionRegionAccessStrategy#removeAll()
*/
@Override
public void removeAll() throws CacheException {
evictAll();
}
@Override
public void evict(Object key) throws CacheException {
getInternalRegion().evict( key );
}
@Override
public void evictAll() throws CacheException {
getInternalRegion().evictAll();
}
}