/*
- * Copyright 2005 the original author or authors.
+ * Copyright 2005-2010 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.
* 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.wamblee.cache;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.Serializable;
-
import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheException;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Element;
-import net.sf.ehcache.config.Configuration;
-import net.sf.ehcache.config.ConfigurationFactory;
import org.apache.log4j.Logger;
+
import org.wamblee.io.InputResource;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Serializable;
+
/**
* Cache implemented on top of EhCache.
- *
+ *
* @author Erik Brakkee
+ *
*/
public class EhCache<KeyType extends Serializable, ValueType extends Serializable>
- implements org.wamblee.cache.Cache<KeyType, ValueType> {
-
+ implements org.wamblee.cache.Cache<KeyType, ValueType> {
private static final Logger LOGGER = Logger.getLogger(EhCache.class);
/**
* EH Cache manager.
*/
- private CacheManager _manager;
+ private CacheManager manager;
/**
* EH cache.
*/
- private Cache _cache;
+ private Cache cache;
/**
* Constructs a cache based on EHCache.
* @throws CacheException
*/
public EhCache(InputResource aResource, String aCacheName)
- throws IOException, CacheException {
+ throws IOException, CacheException {
InputStream is = aResource.getInputStream();
+
try {
- _manager = new CacheManager(is);
- _cache = _manager.getCache(aCacheName);
- if (_cache == null) {
- LOGGER.warn("Creating cache '" + aCacheName
- + "' because it is not configured");
- _manager.addCache(aCacheName);
- _cache = _manager.getCache(aCacheName);
+ manager = new CacheManager(is);
+ cache = manager.getCache(aCacheName);
+
+ if (cache == null) {
+ LOGGER.warn("Creating cache '" + aCacheName +
+ "' because it is not configured");
+ manager.addCache(aCacheName);
+ cache = manager.getCache(aCacheName);
}
- assert _cache != null;
+ assert cache != null;
} finally {
is.close();
}
-
}
/*
* @see org.wamblee.cache.Cache#put(KeyType, ValueType)
*/
public void put(KeyType aKey, ValueType aValue) {
- _cache.put(new Element(aKey, aValue));
+ cache.put(new Element(aKey, aValue));
}
/*
*/
public ValueType get(KeyType aKey) {
try {
- Element element = _cache.get(aKey);
+ Element element = cache.get(aKey);
+
if (element == null) {
return null;
}
+
return (ValueType) element.getValue();
} catch (CacheException e) {
throw new RuntimeException("Cache problem key = '" + aKey + "'", e);
* @see org.wamblee.cache.Cache#remove(KeyType)
*/
public void remove(KeyType aKey) {
- _cache.remove(aKey);
+ cache.remove(aKey);
}
/*
* @see org.wamblee.cache.Cache#clear()
*/
public void clear() {
- _cache.removeAll();
+ cache.removeAll();
}
}