001/* 002 * GWTEventService 003 * Copyright (c) 2011 and beyond, strawbill UG (haftungsbeschr?nkt) 004 * 005 * This is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as 007 * published by the Free Software Foundation; either version 3 of 008 * the License, or (at your option) any later version. 009 * Other licensing for GWTEventService may also be possible on request. 010 * Please view the license.txt of the project for more information. 011 * 012 * This software is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * You should have received a copy of the GNU Lesser General Public 018 * License along with this software; if not, write to the Free 019 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 020 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 021 */ 022package de.novanic.eventservice.event.listener.unlisten; 023 024import de.novanic.eventservice.client.event.filter.EventFilter; 025import de.novanic.eventservice.client.event.Event; 026import de.novanic.eventservice.client.event.domain.Domain; 027import de.novanic.eventservice.client.event.listener.unlisten.UnlistenEvent; 028import de.novanic.eventservice.client.event.listener.unlisten.UnlistenEventListener; 029import de.novanic.eventservice.service.registry.domain.ListenDomainAccessor; 030 031import java.util.Set; 032 033/** 034 * The UnlistenEventFilter filters all {@link de.novanic.eventservice.client.event.listener.unlisten.UnlistenEvent} instances 035 * by default, which doesn't match the registered domains of the user/client for report reasons. 036 * 037 * @author sstrohschein 038 * <br>Date: 16.08.2009 039 * <br>Time: 17:59:36 040 */ 041public class UnlistenEventFilter implements EventFilter 042{ 043 private final String myUserId; 044 private final ListenDomainAccessor myListenDomainAccessor; 045 private final UnlistenEventListener.Scope myUnlistenScope; 046 047 public UnlistenEventFilter(ListenDomainAccessor aListenDomainAccessor, String aUserId, UnlistenEventListener.Scope anUnlistenScope) { 048 myUserId = aUserId; 049 myListenDomainAccessor = aListenDomainAccessor; 050 myUnlistenScope = anUnlistenScope; 051 } 052 053 /** 054 * Filters all {@link de.novanic.eventservice.client.event.listener.unlisten.UnlistenEvent} instances which doesn't 055 * match the registered domains for the current user/client or which are sent on a other scope ({@link UnlistenEventListener.Scope}. 056 * @param anEvent event to check 057 * @return true when the event should be filtered, otherwise false 058 */ 059 public boolean match(Event anEvent) { 060 if(anEvent instanceof UnlistenEvent) { 061 final UnlistenEvent theUnlistenEvent = (UnlistenEvent)anEvent; 062 if(UnlistenEventListener.Scope.UNLISTEN == myUnlistenScope || 063 (UnlistenEventListener.Scope.TIMEOUT == myUnlistenScope && theUnlistenEvent.isTimeout())) { 064 final Set<Domain> theUnlistenedDomains = theUnlistenEvent.getDomains(); 065 if(theUnlistenedDomains != null && !theUnlistenedDomains.isEmpty()) { 066 final Set<Domain> theRegisteredListenDomains = myListenDomainAccessor.getListenDomains(myUserId); 067 for(Domain theUnlistenedDomain: theUnlistenedDomains) { 068 if(theRegisteredListenDomains.contains(theUnlistenedDomain)) { 069 return false; 070 } 071 } 072 } 073 } 074 return true; 075 } 076 return false; 077 } 078}