1 /* 2 * Copyright (C) 2004 Christian Siefkes <christian@siefkes.net>. 3 * Development of this software is supported by the German Research Society, 4 * Berlin-Brandenburg Graduate School in Distributed Information Systems 5 * (DFG grant no. GRK 316). 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, visit 19 * http://www.gnu.org/licenses/lgpl.html or write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 21 */ 22 package de.fu_berlin.ties.filter; 23 24 import org.dom4j.Element; 25 26 import de.fu_berlin.ties.ProcessingException; 27 28 /*** 29 * An oracle decides whether {@link de.fu_berlin.ties.filter.ElementFilter}s 30 * should match elements. They can be used to train 31 * {@link de.fu_berlin.ties.filter.TrainableFilter}s. 32 * 33 * @author Christian Siefkes 34 * @version $Revision: 1.1 $, $Date: 2004/08/23 17:10:10 $, $Author: siefkes $ 35 */ 36 public interface Oracle { 37 38 /*** 39 * Decides whether an element should be accepted by filters. 40 * 41 * @param element the element to test 42 * @return <code>true</code> if filters should accept the element; 43 * <code>false</code> otherwise 44 * @throws ProcessingException if an error occurs during filtering 45 */ 46 boolean shouldMatch(final Element element) throws ProcessingException; 47 48 }