001/*
002 *  Copyright 2012 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.web.cache.zoneitem;
017
018import org.apache.avalon.framework.logger.AbstractLogEnabled;
019import org.apache.avalon.framework.service.ServiceException;
020import org.apache.avalon.framework.service.ServiceManager;
021import org.apache.avalon.framework.service.Serviceable;
022
023import org.ametys.core.observation.Event;
024import org.ametys.core.observation.Observer;
025import org.ametys.web.cache.pageelement.PageElementCache;
026
027/**
028 * Abstract class for observer related to the management of the ZoneItems cache.
029 */
030public abstract class AbstractZoneItemCacheObserver extends AbstractLogEnabled implements Observer, Serviceable
031{
032    /**
033     * The ZoneItems cache. 
034     */
035    protected PageElementCache _zoneItemCache;
036
037    @Override
038    public void service(ServiceManager manager) throws ServiceException
039    {
040        _zoneItemCache = (PageElementCache) manager.lookup(PageElementCache.ROLE + "/zoneItem");
041    }
042    
043    @Override
044    public int getPriority(Event event)
045    {
046        // processed just before front-office cache invalidation
047        return MAX_PRIORITY + 3500;
048    }
049}