001 // This file is part of the Attempto Java Packages. 002 // Copyright 2008, Attempto Group, University of Zurich (see http://attempto.ifi.uzh.ch). 003 // 004 // The Attempto Java Packages is free software: you can redistribute it and/or modify it under the 005 // terms of the GNU Lesser General Public License as published by the Free Software Foundation, 006 // either version 3 of the License, or (at your option) any later version. 007 // 008 // The Attempto Java Packages is distributed in the hope that it will be useful, but WITHOUT ANY 009 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 // PURPOSE. See the GNU Lesser General Public License for more details. 011 // 012 // You should have received a copy of the GNU Lesser General Public License along with the Attempto 013 // Java Packages. If not, see http://www.gnu.org/licenses/. 014 015 package ch.uzh.ifi.attempto.acewiki.core.ontology; 016 017 /** 018 * This abstract class represents a role (other terminologies call it "binary relation" or 019 * "property"). 020 * 021 * @author Tobias Kuhn 022 */ 023 public abstract class Role extends OntologyElement { 024 025 /** 026 * Initializes the role. 027 */ 028 protected Role() { 029 } 030 031 }