001/*
002 *  Copyright 2010 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;
017
018import java.util.Map;
019
020import javax.jcr.Session;
021
022import org.ametys.core.observation.Event;
023import org.ametys.core.observation.Observer;
024import org.ametys.web.ObservationConstants;
025import org.ametys.web.repository.page.Page;
026import org.ametys.web.repository.page.SitemapElement;
027import org.ametys.web.repository.site.Site;
028import org.ametys.web.repository.sitemap.Sitemap;
029
030/**
031 * {@link Observer} for observing page move in order to 
032 * invalidate cache on front-office.
033 */
034public class InvalidateCacheOnPageMoveObserver extends AbstractSiteCacheObserver
035{
036    @Override
037    public boolean supports(Event event)
038    {
039        return event.getId().equals(ObservationConstants.EVENT_PAGE_MOVED);
040    }
041    
042    @Override
043    protected Site _getSite(Event event)
044    {
045        Sitemap sitemap = (Sitemap) event.getArguments().get(ObservationConstants.ARGS_SITEMAP);
046        return sitemap.getSite();
047    }
048    
049    @Override
050    protected void _internalObserve(Event event, Site site, Session liveSession) throws Exception
051    {
052        if (getLogger().isInfoEnabled())
053        {
054            getLogger().info("Page move: " + event + ", invalidating cache");
055        }
056        
057        Map<String, Object> args = event.getArguments();
058        Page page = (Page) args.get(ObservationConstants.ARGS_PAGE);
059        
060        _cachePolicy.invalidateCacheOnPageMove(page, (SitemapElement) args.get("page.old.parent"), (String) args.get("page.old.path"));
061    }
062}