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/**
 *  Copyright 2003-2010 Terracotta, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package net.sf.ehcache.hibernate.regions;

import java.util.Properties;

import net.sf.ehcache.Ehcache;
import net.sf.ehcache.Element;
import net.sf.ehcache.constructs.nonstop.NonStopCacheException;
import net.sf.ehcache.hibernate.nonstop.HibernateNonstopCacheExceptionHandler;
import net.sf.ehcache.hibernate.strategy.EhcacheAccessStrategyFactory;

import org.hibernate.cache.CacheException;
import org.hibernate.cache.GeneralDataRegion;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * An Ehcache specific GeneralDataRegion.
 * 

* GeneralDataRegion instances are used for both the timestamps and query caches. * * @author Chris Dennis * @author Greg Luck * @author Emmanuel Bernard * @author Abhishek Sanoujam */ abstract class EhcacheGeneralDataRegion extends EhcacheDataRegion implements GeneralDataRegion { private static final Logger LOG = LoggerFactory.getLogger(EhcacheGeneralDataRegion.class); /** * Creates an EhcacheGeneralDataRegion using the given Ehcache instance as a backing. */ public EhcacheGeneralDataRegion(EhcacheAccessStrategyFactory accessStrategyFactory, Ehcache cache, Properties properties) { super(accessStrategyFactory, cache, properties); } /** * {@inheritDoc} */ public Object get(Object key) throws CacheException { try { LOG.debug("key: {}", key); if (key == null) { return null; } else { Element element = cache.get(key); if (element == null) { LOG.debug("Element for key {} is null", key); return null; } else { return element.getObjectValue(); } } } catch (net.sf.ehcache.CacheException e) { if (e instanceof NonStopCacheException) { HibernateNonstopCacheExceptionHandler.getInstance().handleNonstopCacheException((NonStopCacheException) e); return null; } else { throw new CacheException(e); } } } /** * {@inheritDoc} */ public void put(Object key, Object value) throws CacheException { LOG.debug("key: {} value: {}", key, value); try { Element element = new Element(key, value); cache.put(element); } catch (IllegalArgumentException e) { throw new CacheException(e); } catch (IllegalStateException e) { throw new CacheException(e); } catch (net.sf.ehcache.CacheException e) { if (e instanceof NonStopCacheException) { HibernateNonstopCacheExceptionHandler.getInstance().handleNonstopCacheException((NonStopCacheException) e); } else { throw new CacheException(e); } } } /** * {@inheritDoc} */ public void evict(Object key) throws CacheException { try { cache.remove(key); } catch (ClassCastException e) { throw new CacheException(e); } catch (IllegalStateException e) { throw new CacheException(e); } catch (net.sf.ehcache.CacheException e) { if (e instanceof NonStopCacheException) { HibernateNonstopCacheExceptionHandler.getInstance().handleNonstopCacheException((NonStopCacheException) e); } else { throw new CacheException(e); } } } /** * {@inheritDoc} */ public void evictAll() throws CacheException { try { cache.removeAll(); } catch (IllegalStateException e) { throw new CacheException(e); } catch (net.sf.ehcache.CacheException e) { if (e instanceof NonStopCacheException) { HibernateNonstopCacheExceptionHandler.getInstance().handleNonstopCacheException((NonStopCacheException) e); } else { throw new CacheException(e); } } } }





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