/*
* Copyright 2005 Tim Telcik, Werner Guttmann, Ralf Joachim
*
* 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.castor.cache.distributed;
import java.util.Map;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.castor.cache.CacheAcquireException;
/**
* JCACHE implementation of Castor JDO Cache.
*
* JCACHE is the Java Temporary Caching API (JSR-107).
*
* For more details of JCACHE, see http://www.jcp.org/en/jsr/detail?id=107
*
* @see <a href="http://www.jcp.org/en/jsr/detail?id=107">JSR-107</a>
* @author <a href="mailto:ttelcik AT hbf DOT com DOT au">Tim Telcik</a>
* @author <a href="mailto:werner DOT guttmann AT gmx DOT net">Werner Guttmann</a>
* @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
* @version $Revision$ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $
* @since 1.0
*/
public final class JCache extends AbstractDistributedCache {
//--------------------------------------------------------------------------
/** The <a href="http://jakarta.apache.org/commons/logging/">Jakarta Commons
* Logging </a> instance used for all logging. */
private static final Log LOG = LogFactory.getLog(JCache.class);
/** The type of the cache. */
public static final String TYPE = "jcache";
/** The classname of the implementations factory class. */
public static final String IMPLEMENTATION = "javax.util.jcache.CacheAccessFactory";
/** Parameter types for calling getMapAccess() method on IMPLEMENTATION. */
private static final Class<?>[] TYPES_GET_MAP_ACCESS = new Class[] {String.class};
//--------------------------------------------------------------------------
// operations for life-cycle management of cache
/**
* {@inheritDoc}
*/
public void initialize(final Properties params) throws CacheAcquireException {
initialize(IMPLEMENTATION, params);
}
/**
* Normally called to initialize JCache. To be able to test the method without
* having <code>javax.util.jcs.CacheAccessFactory</code> implementation, it can
* also be called with a test implementations classname.
*
* @param implementation Cache implementation classname to initialize.
* @param params Parameters to initialize the cache (e.g. name, capacity).
* @throws CacheAcquireException If cache can not be initialized.
*/
@SuppressWarnings("unchecked")
public void initialize(final String implementation, final Properties params)
throws CacheAcquireException {
super.initialize(params);
try {
ClassLoader ldr = this.getClass().getClassLoader();
Class<?> cls = ldr.loadClass(implementation);
Object factory = invokeStaticMethod(cls, "getInstance", null, null);
setCache((Map) invokeMethod(factory, "getMapAccess",
TYPES_GET_MAP_ACCESS, new Object[] {getName()}));
} catch (Exception e) {
String msg = "Error creating JCache cache: " + e.getMessage();
LOG.error(msg, e);
throw new CacheAcquireException(msg, e);
}
}
//--------------------------------------------------------------------------
// getters/setters for cache configuration
/**
* {@inheritDoc}
*/
public String getType() { return TYPE; }
//--------------------------------------------------------------------------
}