/*
 * Copyright (c) 2008-2012, Hazel Bilisim Ltd. All Rights Reserved.
 *
 * 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 com.hazelcast.hibernate.entity;

import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.hibernate.region.AbstractTransactionalDataRegion;
import org.hibernate.cache.CacheDataDescription;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.EntityRegion;
import org.hibernate.cache.access.AccessType;
import org.hibernate.cache.access.EntityRegionAccessStrategy;

import java.util.Properties;

/**
 * @author Leo Kim (lkim@limewire.com)
 */
public class HazelcastEntityRegion extends AbstractTransactionalDataRegion implements EntityRegion {

    public HazelcastEntityRegion(final HazelcastInstance instance, final String name,
                                 final Properties props, final CacheDataDescription metadata) {
        super(instance, name, props, metadata);
    }

    public EntityRegionAccessStrategy buildAccessStrategy(final AccessType accessType) throws CacheException {
        if (null == accessType) {
            throw new CacheException(
                    "Got null AccessType while attempting to determine a proper EntityRegionAccessStrategy. This can't happen!");
        }
        if (AccessType.READ_ONLY.equals(accessType)) {
            return new ReadOnlyAccessStrategy(this, props);
        }
        if (AccessType.NONSTRICT_READ_WRITE.equals(accessType)) {
            return new NonStrictReadWriteAccessStrategy(this, props);
        }
        if (AccessType.READ_WRITE.equals(accessType)) {
            return new ReadWriteAccessStrategy(this, props);
        }
        if (AccessType.TRANSACTIONAL.equals(accessType)) {
            throw new CacheException("Transactional access is not currently supported by Hazelcast.");
        }
        throw new CacheException("Got unknown AccessType \"" + accessType
                + "\" while attempting to build EntityRegionAccessStrategy.");
    }
}