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.plugins.tagcloud.cache; 017 018import java.util.Map; 019 020import org.apache.avalon.framework.service.ServiceException; 021import org.apache.avalon.framework.service.ServiceManager; 022import org.apache.avalon.framework.service.Serviceable; 023 024import org.ametys.core.observation.Event; 025import org.ametys.core.observation.Observer; 026import org.ametys.web.ObservationConstants; 027import org.ametys.web.cache.AbstractCacheObserver; 028 029/** 030 * {@link Observer} for observing content tagging, deletion or validation in order to 031 * invalidate cache for tag cloud 032 */ 033public class InvalidTagCloudCacheOnSiteModification extends AbstractCacheObserver implements Serviceable 034{ 035 036 private TagCloudCacheManager _cacheManager; 037 038 @Override 039 public void service(ServiceManager smanager) throws ServiceException 040 { 041 _cacheManager = (TagCloudCacheManager) smanager.lookup(TagCloudCacheManager.ROLE); 042 } 043 044 @Override 045 public boolean supports(Event event) 046 { 047 return event.getId().equals(ObservationConstants.EVENT_SITE_DELETED) 048 || event.getId().equals(ObservationConstants.EVENT_SITEMAP_DELETED) 049 || event.getId().equals(ObservationConstants.EVENT_PAGE_CHANGED); 050 } 051 052 @Override 053 public void observe(Event event, Map<String, Object> transientVars) throws Exception 054 { 055 _cacheManager.invalidateCache(); 056 } 057 058}