com.ibatis.sqlmap.engine.cache.oscache.OSCacheController Maven / Gradle / Ivy
/*
* Copyright 2004 Clinton Begin
*
* 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 com.ibatis.sqlmap.engine.cache.oscache;
import com.ibatis.sqlmap.engine.cache.CacheController;
import com.ibatis.sqlmap.engine.cache.CacheModel;
import com.opensymphony.oscache.base.NeedsRefreshException;
import com.opensymphony.oscache.general.GeneralCacheAdministrator;
import java.util.Properties;
/**
* Cache implementation for using OSCache with iBATIS
*/
public class OSCacheController implements CacheController {
private static final GeneralCacheAdministrator CACHE = new GeneralCacheAdministrator();
public void flush(CacheModel cacheModel) {
CACHE.flushGroup(cacheModel.getId());
}
public Object getObject(CacheModel cacheModel, Object key) {
String keyString = key.toString();
try {
int refreshPeriod = (int) (cacheModel.getFlushIntervalSeconds());
return CACHE.getFromCache(keyString, refreshPeriod);
} catch (NeedsRefreshException e) {
CACHE.cancelUpdate(keyString);
return null;
}
}
public Object removeObject(CacheModel cacheModel, Object key) {
Object result;
String keyString = key.toString();
try {
int refreshPeriod = (int) (cacheModel.getFlushIntervalSeconds());
Object value = CACHE.getFromCache(keyString, refreshPeriod);
if (value != null) {
CACHE.flushEntry(keyString);
}
result = value;
} catch (NeedsRefreshException e) {
try {
CACHE.flushEntry(keyString);
} finally {
CACHE.cancelUpdate(keyString);
result = null;
}
}
return result;
}
public void putObject(CacheModel cacheModel, Object key, Object object) {
String keyString = key.toString();
CACHE.putInCache(keyString, object, new String[]{cacheModel.getId()});
}
public void setProperties(Properties props) {
}
}