/*
* @(#)$Id: CacheFactory.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.util.cache;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import xbird.config.Settings;
import xbird.util.cache.provider.LRUCacheProvider;
import xbird.util.lang.ClassResolver;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI <yuin405+xbird@gmail.com>
*/
public final class CacheFactory {
private static final Log LOG = LogFactory.getLog(CacheFactory.class);
public static final String PROP_CACHE_PROVIDER = "xbird.cache.provider";
public static final String PROP_MAX_CACHE_ENTRIES = "xbird.cache.max_entries";
/** Restricts an instantiation. */
private CacheFactory() {}
public static Cache createCache(String regionName) {
return createCache(regionName, new Properties());
}
public static Cache createCache(String regionName, Properties props) {
assert (props != null);
String providerStr = Settings.get(PROP_CACHE_PROVIDER);
if(LOG.isTraceEnabled()) {
LOG.trace("createCache using provider: " + providerStr);
}
final Cache cache;
if(providerStr != null) {
try {
CacheProvider provider = (CacheProvider) ClassResolver.get(providerStr).newInstance();
cache = provider.buildCache(regionName, props);
} catch (Exception e) {
throw new IllegalStateException("Could not find CacheProvider class: "
+ providerStr);
}
} else {
cache = new LRUCacheProvider().buildCache(regionName, props);
}
return cache;
}
}