/*
 * Copyright 2002-2008 the original author or authors.
 *
 * 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 org.springframework.orm.hibernate3;

import java.util.Properties;

import org.hibernate.cache.Cache;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.CacheProvider;

/**
 * Proxy for a Hibernate CacheProvider, delegating to a Spring-managed
 * CacheProvider instance, determined by LocalSessionFactoryBean's
 * "cacheProvider" property.
 *
 * @author Juergen Hoeller
 * @since 2.5.1
 * @see org.springframework.orm.hibernate3.LocalSessionFactoryBean#setCacheProvider
 */
public class LocalCacheProviderProxy implements CacheProvider {

	private final CacheProvider cacheProvider;


	public LocalCacheProviderProxy() {
		CacheProvider cp = LocalSessionFactoryBean.getConfigTimeCacheProvider();
		// absolutely needs thread-bound CacheProvider to initialize
		if (cp == null) {
			throw new IllegalStateException("No Hibernate CacheProvider found - " +
			    "'cacheProvider' property must be set on LocalSessionFactoryBean");
		}
		this.cacheProvider = cp;
	}


	public Cache buildCache(String regionName, Properties properties) throws CacheException {
		return this.cacheProvider.buildCache(regionName, properties);
	}

	public long nextTimestamp() {
		return this.cacheProvider.nextTimestamp();
	}

	public void start(Properties properties) throws CacheException {
		this.cacheProvider.start(properties);
	}

	public void stop() {
		this.cacheProvider.stop();
	}

	public boolean isMinimalPutsEnabledByDefault() {
		return this.cacheProvider.isMinimalPutsEnabledByDefault();
	}

}