| gvSIG desktop 1

package org.gvsig.gpe.gml.bindings.geometries;

import java.io.IOException;

import org.gvsig.gpe.gml.GMLTags;

import org.gvsig.gpe.gml.GPEGmlParser;

import org.gvsig.gpe.gml.utils.CoordsContainer;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

/* 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: LinearRingTypeBinding.java 11475 2007-05-07 12:58:42Z jorpiell $

 * $Log$

 * Revision 1.1  2007-05-07 12:58:42  jorpiell

 * Add some methods to manage the multigeometries

 *

 *

 */

/**

 * It parses a gml:linearRingType object. Example:

 * <p>

 * <pre>

 * <code>

 * <LinearRing>

 * <coordinates>0.0,0.0 100.0,0.0 50.0,100.0 0.0,0.0</coordinates>

 * </LinearRing>

 * </code>

 * </pre>

 * </p> 

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

 */

public class LinearRingTypeBinding {

        /**

         * It parses the gml:LinearRing tag

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * An array of coordinates

         * @throws XmlPullParserException

         * @throws IOException

         */

        public static double[][] parse(XmlPullParser parser,GPEGmlParser handler) throws XmlPullParserException, IOException{

                boolean endFeature = false;

                int currentTag;

                CoordsContainer coordsContainer = null;

                double[][] coordinates = null;

                String tag = parser.getName();

                currentTag = parser.getEventType();

                while (!endFeature){

                        switch(currentTag){

                        case XmlPullParser.START_TAG:

                                if (tag.compareTo(GMLTags.GML_COORDINATES) == 0){

                                        coordinates = CoordinatesTypeBinding.parse(parser, handler);

                                }else if (tag.compareTo(GMLTags.GML_COORD) == 0){

                                        double[] coord = CoordTypeBinding.parse(parser, handler);

                                        if (coordsContainer == null){

                                                coordsContainer = new CoordsContainer();

                                        }

                                        coordsContainer.addCoordinates(coord);

                                }

                                break;

                        case XmlPullParser.END_TAG:

                                if (tag.compareTo(GMLTags.GML_LINEARRING) == 0){                                                

                                        endFeature = true;

                                        //If the file contains the COORD tag instead of the

                                        //coordinates

                                        if (coordsContainer != null){

                                                coordinates = coordsContainer.getCoordinates();                                                                        

                                        }                                        

                                }

                                break;

                        case XmlPullParser.TEXT:                                        

                                break;

                        }

                        if (!endFeature){                                        

                                currentTag = parser.next();

                                tag = parser.getName();

                        }

                }                        

                return coordinates;

        }

}