/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2007, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.cache.jbc2.builder;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.hibernate.cache.CacheException;
import org.hibernate.cfg.Settings;
import org.hibernate.util.NamingHelper;
import org.hibernate.util.PropertiesHelper;
import org.jboss.cache.CacheManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A {@link MultiplexingCacheInstanceManager} that finds its cache factory
* in JNDI rather than creating one itself.
*
* @author <a href="brian.stansberry@jboss.com">Brian Stansberry</a>
* @version $Revision: 1 $
*/
public class JndiMultiplexingCacheInstanceManager extends MultiplexingCacheInstanceManager {
private static final Logger log = LoggerFactory.getLogger(JndiMultiplexingCacheInstanceManager.class);
/**
* Specifies the JNDI name under which the {@link CacheManager} to use is bound.
* There is no default value -- the user must specify the property.
*/
public static final String CACHE_FACTORY_RESOURCE_PROP = "hibernate.cache.region.jbc2.cachefactory";
/**
* Create a new JndiMultiplexingCacheInstanceManager.
*/
public JndiMultiplexingCacheInstanceManager() {
super();
}
@Override
public void start(Settings settings, Properties properties) throws CacheException {
String name = PropertiesHelper.getString(CACHE_FACTORY_RESOURCE_PROP, properties, null);
if (name == null)
throw new CacheException("Configuration property " + CACHE_FACTORY_RESOURCE_PROP + " not set");
CacheManager cf = locateCacheFactory( name, NamingHelper.getJndiProperties( properties ) );
setCacheFactory( cf );
super.start(settings, properties);
}
private CacheManager locateCacheFactory(String jndiNamespace, Properties jndiProperties) {
Context ctx = null;
try {
ctx = new InitialContext( jndiProperties );
return (CacheManager) ctx.lookup( jndiNamespace );
}
catch (NamingException ne) {
String msg = "Unable to retreive Cache from JNDI [" + jndiNamespace + "]";
log.info( msg, ne );
throw new CacheException( msg );
}
finally {
if ( ctx != null ) {
try {
ctx.close();
}
catch( NamingException ne ) {
log.info( "Unable to release initial context", ne );
}
}
}
}
}