001/* 002 * Copyright 2006 - 2013 003 * Stefan Balev <stefan.balev@graphstream-project.org> 004 * Julien Baudry <julien.baudry@graphstream-project.org> 005 * Antoine Dutot <antoine.dutot@graphstream-project.org> 006 * Yoann Pigné <yoann.pigne@graphstream-project.org> 007 * Guilhelm Savin <guilhelm.savin@graphstream-project.org> 008 * 009 * GraphStream is a library whose purpose is to handle static or dynamic 010 * graph, create them from scratch, file or any source and display them. 011 * 012 * This program is free software distributed under the terms of two licenses, the 013 * CeCILL-C license that fits European law, and the GNU Lesser General Public 014 * License. You can use, modify and/ or redistribute the software under the terms 015 * of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following 016 * URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by 017 * the Free Software Foundation, either version 3 of the License, or (at your 018 * option) any later version. 019 * 020 * This program is distributed in the hope that it will be useful, but WITHOUT ANY 021 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 022 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 023 * 024 * You should have received a copy of the GNU Lesser General Public License 025 * along with this program. If not, see <http://www.gnu.org/licenses/>. 026 * 027 * The fact that you are presently reading this means that you have had 028 * knowledge of the CeCILL-C and LGPL licenses and that you accept their terms. 029 */ 030package org.graphstream.stream.file.gexf; 031 032import javax.xml.stream.XMLStreamException; 033 034public class GEXFEdge implements GEXFElement { 035 GEXF root; 036 037 String id; 038 String label; 039 String source; 040 String target; 041 boolean directed; 042 043 double weight = Double.NaN; 044 045 GEXFAttValues attvalues; 046 GEXFSpells spells; 047 048 public GEXFEdge(GEXF root, String id, String source, String target, 049 boolean directed) { 050 this.root = root; 051 052 this.id = id; 053 this.label = id; 054 this.source = source; 055 this.target = target; 056 this.directed = directed; 057 058 spells = new GEXFSpells(root); 059 attvalues = new GEXFAttValues(root); 060 } 061 062 /* 063 * (non-Javadoc) 064 * 065 * @see 066 * org.graphstream.stream.file.gexf.GEXFElement#export(org.graphstream.stream 067 * .file.gexf.SmartXMLWriter) 068 */ 069 public void export(SmartXMLWriter stream) throws XMLStreamException { 070 stream.startElement("edge"); 071 072 stream.stream.writeAttribute("id", id); 073 stream.stream.writeAttribute("label", label); 074 stream.stream.writeAttribute("source", source); 075 stream.stream.writeAttribute("target", target); 076 stream.stream.writeAttribute("type", directed ? "directed" 077 : "undirected"); 078 079 if (!Double.isNaN(weight)) 080 stream.stream.writeAttribute("weight", Double.toString(weight)); 081 082 if (root.isExtensionEnable(Extension.DYNAMICS)) 083 spells.export(stream); 084 085 attvalues.export(stream); 086 087 stream.endElement(); // EDGE 088 } 089}