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.client.event.filter; 023 024/** 025 * AppendableEventFilter ensures that the {@link de.novanic.eventservice.client.event.filter.EventFilter} can handle more 026 * attached {@link de.novanic.eventservice.client.event.filter.EventFilter} instances. Depending on the implementation 027 * of the AppendableEventFilter, the method 028 * {@link de.novanic.eventservice.client.event.filter.EventFilter#match(de.novanic.eventservice.client.event.Event)} of the 029 * super class must be called first, when the method is overwritten. 030 * 031 * @author sstrohschein 032 * <br>Date: 04.03.2009 033 * <br>Time: 20:18:01 034 */ 035public interface AppendableEventFilter extends EventFilter 036{ 037 /** 038 * Appends another {@link de.novanic.eventservice.client.event.filter.EventFilter} which should also be used/called from the match method 039 * ({@link de.novanic.eventservice.client.event.filter.EventFilter#match(de.novanic.eventservice.client.event.Event)}). 040 * @param anEventFilter {@link de.novanic.eventservice.client.event.filter.EventFilter} to attach 041 * @return the created AppendableEventFilter (to attach more {@link de.novanic.eventservice.client.event.filter.EventFilter} instances) 042 */ 043 AppendableEventFilter attach(EventFilter anEventFilter); 044}