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1 /* 2 * The Apache Software License, Version 1.1 3 * 4 * Copyright (c) 1999, 2000 The Apache Software Foundation. All rights 5 * reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * 3. The end-user documentation included with the redistribution, if 20 * any, must include the following acknowlegement: 21 * "This product includes software developed by the 22 * Apache Software Foundation (http://www.apache.org/)." 23 * Alternately, this acknowlegement may appear in the software itself, 24 * if and wherever such third-party acknowlegements normally appear. 25 * 26 * 4. The names "The Jakarta Project", "Ant", and "Apache Software 27 * Foundation" must not be used to endorse or promote products derived 28 * from this software without prior written permission. For written 29 * permission, please contact apache@apache.org. 30 * 31 * 5. Products derived from this software may not be called "Apache" 32 * nor may "Apache" appear in their names without prior written 33 * permission of the Apache Group. 34 * 35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 46 * SUCH DAMAGE. 47 * ==================================================================== 48 * 49 * This software consists of voluntary contributions made by many 50 * individuals on behalf of the Apache Software Foundation. For more 51 * information on the Apache Software Foundation, please see 52 * <http://www.apache.org/>;. 53 */ 54 package tweed.system.bus; 55 import java.util.EventObject; 56 57 58 /*** 59 * Interface for classes that want to be a member of the EventBus. 60 * 61 * @version $Revision: 1.1 $ $Date: 2002/03/12 19:07:03 $ 62 * @author Simeon Fitch (source taken out from Ant Antidote) 63 */ 64 public interface BusMember { 65 66 /*** 67 * Get the filter to that is used to determine if an event should 68 * to to the member. 69 * 70 * @return Filter to use. 71 */ 72 BusFilter getBusFilter() ; 73 74 /*** 75 * Called when an event is to be posted to the member. 76 * 77 * @param event Event to post. 78 * @return true if event should be propogated, false if 79 * it should be cancelled. 80 */ 81 boolean eventPosted( EventObject event ) ; 82 83 } 84

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