Application: gvSIG desktop » gvSIG data provider for GPE

package org.gvsig.gpe.gml.parser.v2.geometries;

import java.io.IOException;

import javax.xml.namespace.QName;

import org.gvsig.gpe.gml.parser.GPEDefaultGmlParser;

import org.gvsig.gpe.gml.parser.v2.coordinates.CoordTypeIterator;

import org.gvsig.gpe.gml.parser.v2.coordinates.CoordinatesTypeIterator;

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

import org.gvsig.gpe.xml.stream.EventType;

import org.gvsig.gpe.xml.stream.IXmlStreamReader;

import org.gvsig.gpe.xml.stream.XmlStreamException;

import org.gvsig.gpe.xml.utils.CompareUtils;

/* 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:BoxTypeBinding.java 371 2008-01-10 09:30:19Z jpiera $

 * $Log$

 * Revision 1.5  2007/05/24 07:29:47  csanchez

 * A?adidos Alias GML2

 *

 * Revision 1.4  2007/05/14 11:18:51  jorpiell

 * ProjectionFactory updated

 *

 * Revision 1.3  2007/05/14 09:31:06  jorpiell

 * Add the a new class to compare tags

 *

 * Revision 1.2  2007/05/08 10:24:16  jorpiell

 * Add comments to create javadocs

 *

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

 * Add some methods to manage the multigeometries

 *

 *

 */

/**

 * It parses a gml:BoxType object. Example:

 * <p>

 * <pre>

 * <code>

 * <gml:Box srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">

 * <gml:coord><gml:X>0</gml:X><gml:Y>0</gml:Y></gml:coord>

 * <gml:coord><gml:X>50</gml:X><gml:Y>50</gml:Y></gml:coord>

 * </gml:Box>

 * </code>

 * </pre>

 * </p> 

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

 */

public class BoxTypeBinding extends GeometryBinding{

        /**

         * It parses the gml:Box tag

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * The Bounding box

         * @throws XmlStreamException

         * @throws IOException

         */

        public Object parse(IXmlStreamReader parser,GPEDefaultGmlParser handler) throws XmlStreamException, IOException {

        parser.require(EventType.START_ELEMENT, GMLTags.GML_BOX);

                boolean endFeature = false;

                EventType currentTag;

                Object bbox = null;                

                super.setAtributtes(parser, handler.getErrorHandler());

                QName tag = parser.getElementName();

                currentTag = parser.getEventType();

                while (!endFeature){

                        switch(currentTag.getCode()){

                        case EventType.START_ELEMENT_CODE:

                                if (CompareUtils.compareWithNamespace(tag,GMLTags.GML_COORDINATES)){

                                        CoordinatesTypeIterator coordinatesIterator = handler.getProfile().getCoordinatesTypeBinding();

                                        coordinatesIterator.initialize(parser, handler,GMLTags.GML_BOX);

                                        bbox = handler.getContentHandler().startBbox(id,

                                                        coordinatesIterator,

                                                        srsName);

                                }else if (CompareUtils.compareWithNamespace(tag,GMLTags.GML_COORD)){

                                        CoordTypeIterator coordinatesIterator = handler.getProfile().getCoordTypeBinding();

                                        coordinatesIterator.initialize(parser, handler,GMLTags.GML_BOX);

                                        bbox = handler.getContentHandler().startBbox(id,

                                                        coordinatesIterator,                                                                

                                                        srsName);

                                }

                                break;

                        case EventType.END_ELEMENT_CODE:

                                if (CompareUtils.compareWithNamespace(tag,GMLTags.GML_BOX)){                                                

                                        endFeature = true;

                                        handler.getContentHandler().endBbox(bbox);

                                }

                                break;

                        }                

                        if (!endFeature){                                        

                                currentTag = parser.nextTag();

                                tag = parser.getElementName();

                        }

                }                        

                return bbox;        

        }

}