/**
* Vosao CMS. Simple CMS for Google App Engine.
*
* Copyright (C) 2009-2010 Vosao development team.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* email: vosao.dev@gmail.com
*/
package org.vosao.global.impl;
import java.io.Serializable;
import java.util.Date;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.vosao.common.VosaoContext;
import org.vosao.dao.Dao;
import org.vosao.entity.LanguageEntity;
import org.vosao.global.CacheService;
import org.vosao.global.PageCache;
import org.vosao.global.PageCacheItem;
/**
*
* @author Alexander Oleynik
*
*/
public class PageCacheImpl implements PageCache {
private static final Log logger = LogFactory.getLog(PageCacheImpl.class);
private String getPageKey(String url, String language) {
return "page:" + url + ":" + language;
}
private CacheService getCache() {
return VosaoContext.getInstance().getBusiness().getSystemService()
.getCache();
}
private Dao getDao() {
return VosaoContext.getInstance().getBusiness().getDao();
}
@Override
public PageCacheItem get(String url, String language) {
try {
PageCacheItem item = (PageCacheItem)getCache().get(getPageKey(url,
language));
if (item != null) {
if (getCache().getResetDate() == null
|| item.getTimestamp().after(getCache()
.getResetDate())) {
return item;
}
}
}
catch (Exception e) {
logger.error(e.getMessage());
}
return null;
}
@Override
public void put(String url, String language, String content,
String contentType) {
getCache().put(getPageKey(url, language),
new PageCacheItem(content, contentType));
}
@Override
public void remove(String url) {
for (LanguageEntity lang : getDao().getLanguageDao().select()) {
getCache().remove(getPageKey(url, lang.getCode()));
}
}
@Override
public boolean contains(String url) {
for (LanguageEntity lang : getDao().getLanguageDao().select()) {
if (getCache().containsKey(getPageKey(url, lang.getCode()))) {
return true;
}
}
return false;
}
}