001 /* 002 Copyright (C) 2002 Renaud Pawlak <renaud@aopsys.com> 003 004 This program is free software; you can redistribute it and/or modify 005 it under the terms of the GNU Lesser General Public License as 006 published by the Free Software Foundation; either version 2 of the 007 License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU Lesser General Public License for more details. 013 014 You should have received a copy of the GNU Lesser General Public 015 License along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 017 USA */ 018 019 package org.objectweb.jac.ide; 020 021 /** 022 * This is the root class for all the kinds of links. */ 023 024 public abstract class Link extends ModelElement { 025 026 public Link() { 027 } 028 029 Role startRole; 030 public Role getStartRole() { 031 return startRole; 032 } 033 public void setStartRole(Role startRole) { 034 this.startRole = startRole; 035 } 036 037 public void setStart(ModelElement start) { 038 startRole.setStart(start); 039 endRole.setEnd(start); 040 } 041 public ModelElement getStart() { 042 return startRole.getStart(); 043 } 044 045 Role endRole; 046 public Role getEndRole() { 047 return endRole; 048 } 049 public void setEndRole(Role endRole) { 050 this.endRole = endRole; 051 } 052 053 public void setEnd(ModelElement end) { 054 endRole.setStart(end); 055 startRole.setEnd(end); 056 } 057 public ModelElement getEnd() { 058 return endRole.getStart(); 059 } 060 061 }