/**
* Copyright 2010 Daniel Guermeur and Amy Unruh
*
* 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.
*
* See http://connectrapp.appspot.com/ for a demo, and links to more information
* about this app and the book that it accompanies.
*/
package com.casamind.adware.server.utils.cache;
import java.io.Serializable;
import com.google.appengine.api.memcache.Expiration;
import com.google.appengine.api.memcache.MemcacheService;
import com.google.appengine.api.memcache.MemcacheServiceException;
import com.google.appengine.api.memcache.MemcacheServiceFactory;
public class CacheSupport {
private static MemcacheService cacheInit(String nameSpace) {
MemcacheService memcache = MemcacheServiceFactory.getMemcacheService(nameSpace);
return memcache;
}
public static Object cacheGet(String nameSpace, Object id) {
Object r = null;
MemcacheService memcache = cacheInit(nameSpace);
try {
r = memcache.get(id);
} catch (MemcacheServiceException e) {
// nothing can be done.
}
return r;
}
public static void cacheDelete(String nameSpace, Object id) {
MemcacheService memcache = cacheInit(nameSpace);
try {
memcache.delete(id);
} catch (MemcacheServiceException e) {
// nothing can be done.
}
}
public static void cachePutExp(String nameSpace, Object id, Serializable o, int exp) {
MemcacheService memcache = cacheInit(nameSpace);
try {
if (exp > 0) {
memcache.put(id, o, Expiration.byDeltaSeconds(exp));
} else {
memcache.put(id, o);
}
} catch (MemcacheServiceException e) {
// nothing can be done.
}
}
public static void cachePut(String nameSpace, Object id, Serializable o) {
cachePutExp(nameSpace, id, o, 0);
}
}