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Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.

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/**
 *  Copyright 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.nonstop;

import net.sf.ehcache.hibernate.regions.EhcacheCollectionRegion;
import net.sf.ehcache.hibernate.regions.EhcacheEntityRegion;
import net.sf.ehcache.hibernate.strategy.EhcacheAccessStrategyFactory;

import org.hibernate.cache.access.AccessType;
import org.hibernate.cache.access.CollectionRegionAccessStrategy;
import org.hibernate.cache.access.EntityRegionAccessStrategy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Implementation of {@link EhcacheAccessStrategyFactory} that takes care of Nonstop cache exceptions using
 * {@link HibernateNonstopCacheExceptionHandler}
 *
 * @author Abhishek Sanoujam
 *
 */
public class NonstopAccessStrategyFactory implements EhcacheAccessStrategyFactory {

    private static final Logger LOG = LoggerFactory.getLogger(NonstopAccessStrategyFactory.class);
    private final EhcacheAccessStrategyFactory actualFactory;

    /**
     * Constructor accepting the actual factory
     *
     * @param actualFactory
     */
    public NonstopAccessStrategyFactory(EhcacheAccessStrategyFactory actualFactory) {
        this.actualFactory = actualFactory;
    }

    /**
     * {@inheritDoc}
     */
    public EntityRegionAccessStrategy createEntityRegionAccessStrategy(EhcacheEntityRegion entityRegion, AccessType accessType) {
        return new NonstopAwareEntityRegionAccessStrategy(actualFactory.createEntityRegionAccessStrategy(entityRegion, accessType),
                HibernateNonstopCacheExceptionHandler.getInstance());
    }

    /**
     * {@inheritDoc}
     */
    public CollectionRegionAccessStrategy createCollectionRegionAccessStrategy(EhcacheCollectionRegion collectionRegion,
            AccessType accessType) {
        return new NonstopAwareCollectionRegionAccessStrategy(actualFactory.createCollectionRegionAccessStrategy(collectionRegion,
                accessType), HibernateNonstopCacheExceptionHandler.getInstance());
    }

}