001/* Copyright (C) 2013 TU Dortmund 002 * This file is part of AutomataLib, http://www.automatalib.net/. 003 * 004 * AutomataLib is free software; you can redistribute it and/or 005 * modify it under the terms of the GNU Lesser General Public 006 * License version 3.0 as published by the Free Software Foundation. 007 * 008 * AutomataLib is distributed in the hope that it will be useful, 009 * but WITHOUT ANY WARRANTY; without even the implied warranty of 010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 011 * Lesser General Public License for more details. 012 * 013 * You should have received a copy of the GNU Lesser General Public 014 * License along with AutomataLib; if not, see 015 * http://www.gnu.de/documents/lgpl.en.html. 016 */ 017package net.automatalib.graphs.dot; 018 019import java.io.IOException; 020import java.util.Map; 021 022import net.automatalib.commons.util.mappings.Mapping; 023 024public class EmptyDOTHelper<N, E> implements GraphDOTHelper<N, E> { 025 026 027 @Override 028 public void writePreamble(Appendable a) throws IOException { 029 } 030 031 @Override 032 public void writePostamble(Mapping<N, String> identifiers, Appendable a) 033 throws IOException { 034 } 035 036 @Override 037 public boolean getNodeProperties(N node, Map<String, String> properties) { 038 return true; 039 } 040 041 @Override 042 public boolean getEdgeProperties(N src, E edge, N tgt, Map<String, String> properties) { 043 return true; 044 } 045 046}