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.cms.ObservationConstants; 025import org.ametys.core.observation.Event; 026import org.ametys.core.observation.Observer; 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 InvalidTagCloudCacheOnContentModification extends AbstractCacheObserver implements Serviceable 034{ 035 private TagCloudCacheManager _cacheManager; 036 037 @Override 038 public void service(ServiceManager smanager) throws ServiceException 039 { 040 _cacheManager = (TagCloudCacheManager) smanager.lookup(TagCloudCacheManager.ROLE); 041 } 042 043 @Override 044 public boolean supports(Event event) 045 { 046 return event.getId().equals(ObservationConstants.EVENT_CONTENT_VALIDATED) 047 || event.getId().equals(ObservationConstants.EVENT_CONTENT_MODIFIED) 048 || event.getId().equals(ObservationConstants.EVENT_CONTENT_TAGGED) 049 || event.getId().equals(ObservationConstants.EVENT_CONTENT_DELETED) 050 || event.getId().equals(org.ametys.web.ObservationConstants.EVENT_CONTENT_UNPUBLISHED); 051 } 052 053 @Override 054 public void observe(Event event, Map<String, Object> transientVars) throws Exception 055 { 056 _cacheManager.invalidateCache(); 057 } 058 059}