| gvSIG desktop 1

package org.gvsig.gpe;

import java.io.File;

import java.lang.reflect.InvocationTargetException;

import java.util.Hashtable;

import java.util.Iterator;

import org.gvsig.gpe.writers.GPEWriterHandler;

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id: GPERegister.java 11265 2007-04-19 11:56:03Z csanchez $

 * $Log$

 * Revision 1.10  2007-04-19 11:50:20  csanchez

 * Actualizacion protoripo libGPE

 *

 * Revision 1.9  2007/04/19 07:23:20  jorpiell

 * Add the add methods to teh contenhandler and change the register mode

 *

 * Revision 1.8  2007/04/18 12:54:45  csanchez

 * Actualizacion protoripo libGPE

 *

 * Revision 1.7  2007/04/17 07:53:55  jorpiell

 * Before to start a new parsing process, the initialize method of the content handlers is throwed

 *

 * Revision 1.6  2007/04/17 06:26:54  jorpiell

 * Fixed one problem with a index

 *

 * Revision 1.5  2007/04/14 16:06:13  jorpiell

 * The writer handler has been updated

 *

 * Revision 1.4  2007/04/12 17:06:42  jorpiell

 * First GML writing tests

 *

 * Revision 1.3  2007/04/11 11:10:27  jorpiell

 * Cambiado el nombre de getDriver a GetParser

 *

 * Revision 1.2  2007/04/11 08:54:24  jorpiell

 * A?adidos algunos comentarios

 *

 * Revision 1.1  2007/04/11 08:52:55  jorpiell

 * Se puede registrar una clase por nombre

 *

 * Revision 1.1  2007/04/11 08:22:41  jorpiell

 * GPE clase para registrar los drivers

 *

 *

 */

/**

 * This class is used to register the GPE parsers. All the 

 * parsers must be registered in this class before to be

 * used for the consumer application

 * @author Jorge Piera LLodr? (jorge.piera@iver.es)

 */

public class GPERegister {

        private static Hashtable parsers = new Hashtable();

        private static Hashtable writers = new Hashtable();

        /**

         * Adds a new GPE parser

         * @param name

         * Driver name. It must be written like FORMAT VERSION

         * @param description

         * Driver description. Just a descriptive text

         * @param clazz

         * The parser class        

         * @throws NoSuchMethodException 

         * @throws InvocationTargetException 

         * @throws IllegalAccessException 

         * @throws InstantiationException 

         * @throws SecurityException 

         * @throws IllegalArgumentException 

         */

        public static void addGpeParser(String name, String description,Class clazz) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException{ 

                if (clazz != null){

                        GPEParser parser = (GPEParser)clazz.getConstructor(null).newInstance(null);

                        parsers.put(name, parser);

                }                

        }

        /**

         * Adds a new GPEWriterHandler

         * @param name

         * Driver name. It must be written like FORMAT VERSION

         * @param description

         * Driver description. Just a descriptive text

         * @param clazz

         * The parser class        

         * @throws NoSuchMethodException 

         * @throws InvocationTargetException 

         * @throws IllegalAccessException 

         * @throws InstantiationException 

         * @throws SecurityException 

         * @throws IllegalArgumentException 

         */

        public static void addGpeWriterHandler(String name, String description,Class clazz) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException{

                if (clazz != null){

                        GPEWriterHandler parser = (GPEWriterHandler)clazz.getConstructor(null).newInstance(null);

                        writers.put(name, parser);

                }        

        }

        /**

         * Create a new parser from a name

         * @param name

         * @param contenHandler

         * @param errorHandler

         * @throws NoSuchMethodException 

         * @throws InvocationTargetException 

         * @throws IllegalAccessException 

         * @throws InstantiationException 

         * @throws SecurityException 

         * @throws IllegalArgumentException 

         * @return

         * Null if the parser doesn't exist

         */

        public static GPEParser createParser(String name) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException{

                Object parser =  parsers.get(name);

                if (parser != null){

                        return (GPEParser)parser.getClass().getConstructor(null).newInstance(null);

                }        

                return null;

        }

        /**

         * Gets the parser that can open the file (if it exists)

         * @param file

         * File to open

         * @return

         * Null if the driver doesn't exist

         * @throws NoSuchMethodException 

         * @throws InvocationTargetException 

         * @throws IllegalAccessException 

         * @throws InstantiationException 

         * @throws SecurityException 

         * @throws IllegalArgumentException 

         */

        public static GPEParser createParser(File file) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {

                Iterator keys = parsers.keySet().iterator();

                while (keys.hasNext()){

                        String key = (String)keys.next();

                        GPEParser parser = (GPEParser)parsers.get(key);

                        if (parser.accept(file)){

                                return createParser(key);

                        }

                }

                return null;

        }

        /**

         * Create a new content writer from a name

         * @param name

         * @param contenHandler

         * @param errorHandler

         * @throws NoSuchMethodException 

         * @throws InvocationTargetException 

         * @throws IllegalAccessException 

         * @throws InstantiationException 

         * @throws SecurityException 

         * @throws IllegalArgumentException 

         */

        public static GPEWriterHandler createWriter(String name) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException{

                Object writer =  writers.get(name);

                if (writer != null){

                        return (GPEWriterHandler)writer.getClass().getConstructor(null).newInstance(null);

                }        

                return null;

        }

        /**

         * Return true if exists a driver that can open the file

         * @param file

         * File to open

         * @return

         * true if the driver exists

         */

        public static boolean accept(File file){

                Iterator keys = parsers.keySet().iterator();

                while (keys.hasNext()){

                        GPEParser parser = (GPEParser)parsers.get(keys.next());

                        if (parser.accept(file)){

                                return true;

                        }

                }

                return false;

        }

}