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 * This file is part of GraphStream <http://graphstream-project.org>.
010 * 
011 * GraphStream is a library whose purpose is to handle static or dynamic
012 * graph, create them from scratch, file or any source and display them.
013 * 
014 * This program is free software distributed under the terms of two licenses, the
015 * CeCILL-C license that fits European law, and the GNU Lesser General Public
016 * License. You can  use, modify and/ or redistribute the software under the terms
017 * of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
018 * URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by
019 * the Free Software Foundation, either version 3 of the License, or (at your
020 * option) any later version.
021 * 
022 * This program is distributed in the hope that it will be useful, but WITHOUT ANY
023 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
024 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
025 * 
026 * You should have received a copy of the GNU Lesser General Public License
027 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
028 * 
029 * The fact that you are presently reading this means that you have had
030 * knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
031 */
032package org.graphstream.graph;
033
034/**
035 * An interface aimed at dynamically creating graph objects based on a class
036 * name.
037 * 
038 * @since september 2007
039 */
040public class GraphFactory {
041        /**
042         * Create a new instance of graph.
043         */
044        public GraphFactory() {
045        }
046
047        /**
048         * Instantiate a new graph from the given class name.
049         * 
050         * @return A graph instance or null if the graph class was not found.
051         */
052        public Graph newInstance(String id, String graphClass) {
053                try {
054                        String completeGraphClass;
055                        if (graphClass.split("[.]").length < 2) {
056                                completeGraphClass = "org.graphstream.graph.implementations."
057                                                + graphClass;
058                        } else {
059                                completeGraphClass = graphClass;
060                        }
061                        // Graph res = (Graph) Class.forName( completeGraphClass
062                        // ).newInstance();
063                        // res.setId( id );
064                        Class<?> clazz = Class.forName(completeGraphClass);
065                        Graph res = (Graph) clazz.getConstructor(String.class).newInstance(
066                                        id);
067                        return res;
068                } catch (InstantiationException e) {
069                        System.out
070                                        .println("GraphFactory newInstance InstantiationException : "
071                                                        + e.getMessage());
072                } catch (ClassNotFoundException e) {
073                        System.out
074                                        .println("GraphFactory newInstance ClassNotFoundException : "
075                                                        + e.getMessage());
076                } catch (IllegalAccessException e) {
077                        System.out
078                                        .println("GraphFactory newInstance IllegalAccessException : "
079                                                        + e.getMessage());
080                } catch (NoSuchMethodException e) {
081                        System.out
082                                        .println("GraphFactory newInstance NoSuchMethodException : "
083                                                        + e.getMessage());
084                } catch (java.lang.reflect.InvocationTargetException e) {
085                        System.out
086                                        .println("GraphFactory newInstance InvocationTargetException : "
087                                                        + e.getMessage());
088                }
089
090                return null;
091        }
092}