/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.resourceloader.modules.cache.ehcache;
import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheException;
import net.sf.ehcache.Element;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.libraries.resourceloader.ResourceBundleData;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.resourceloader.cache.CachingResourceBundleData;
import org.pentaho.reporting.libraries.resourceloader.cache.DefaultResourceBundleDataCacheEntry;
import org.pentaho.reporting.libraries.resourceloader.cache.ResourceBundleDataCache;
import org.pentaho.reporting.libraries.resourceloader.cache.ResourceBundleDataCacheEntry;
public class EHResourceBundleDataCache implements ResourceBundleDataCache
{
private static final Log logger = LogFactory.getLog(EHResourceDataCache.class);
private Cache dataCache;
public EHResourceBundleDataCache(final Cache dataCache)
{
if (dataCache == null)
{
throw new NullPointerException();
}
this.dataCache = dataCache;
}
/**
* Retrieves the given data from the cache.
*
* @param key the resource key for the data.
*/
public ResourceBundleDataCacheEntry get(final ResourceKey key)
{
if (key == null)
{
throw new NullPointerException();
}
try
{
final Element element = dataCache.get((Object) key);
if (element != null)
{
if (EHCacheModule.CACHE_MONITOR.isDebugEnabled())
{
EHCacheModule.CACHE_MONITOR.debug("Bund Cache Hit " + key);
}
return (ResourceBundleDataCacheEntry) element.getObjectValue();
}
else
{
if (EHCacheModule.CACHE_MONITOR.isDebugEnabled())
{
EHCacheModule.CACHE_MONITOR.debug("Bund Cache Miss " + key);
}
return null;
}
}
catch (CacheException e)
{
logger.debug("Failed to query cache", e);
return null;
}
}
public ResourceBundleData put(final ResourceManager caller, final ResourceBundleData data)
throws ResourceLoadingException
{
if (caller == null)
{
throw new NullPointerException();
}
if (data == null)
{
throw new NullPointerException();
}
final ResourceBundleData cdata = CachingResourceBundleData.createCached(data);
final Object keyObject = data.getBundleKey();
final Object valueObject = new DefaultResourceBundleDataCacheEntry(cdata, caller);
final Element element = new Element(keyObject, valueObject);
if (EHCacheModule.CACHE_MONITOR.isDebugEnabled())
{
EHCacheModule.CACHE_MONITOR.debug("Storing Bundle " + keyObject);
}
dataCache.put(element);
return cdata;
}
public void remove(final ResourceBundleData data)
{
if (data == null)
{
throw new NullPointerException();
}
dataCache.remove((Object) data.getBundleKey());
}
/**
* Remove all cached entries. This should be called after the cache has become
* invalid or after it has been removed from a resource manager.
*/
public void clear()
{
try
{
dataCache.removeAll();
}
catch (Exception e)
{
logger.debug("Clearing cache failed", e);
// ignore it ..
}
}
public void shutdown()
{
try
{
dataCache.getCacheManager().shutdown();
}
catch (Exception e)
{
logger.debug("Failed to shut-down cache", e);
// ignore it ..
}
}
}