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.profiles.IBindingProfile;

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.parser.IGPEContentHandler;

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;

import com.sun.corba.se.impl.orb.ParserTable;

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

 * $Log$

 * Revision 1.6  2007/05/24 07:29:47  csanchez

 * A?adidos Alias GML2

 *

 * Revision 1.5  2007/05/15 07:30:38  jorpiell

 * Add the geometryProperties tags

 *

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

 * ProjectionFactory updated

 *

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

 *

 * Revision 1.1  2007/05/07 07:06:46  jorpiell

 * Add a constructor with the name and the description fields

 *

 *

 */

/**

 * It parses a gml:PointType object. Example:

 * <p>

 * <pre>

 * <code>

 * <Point gid="P6776">

 * <coord><X>50.0</X><Y>50.0</Y></coord>

 * </Point>

 * </code>

 * </pre>

 * </p> 

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

 */

public class PointTypeBinding extends GeometryBinding{

        /**

         * It parses the gml:Point tag

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * A point

         * @throws XmlStreamException

         * @throws IOException

         */

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

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

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

                parser.nextTag();

                Object point = parseTag(parser, handler, id, srsName);

                parser.require(EventType.END_ELEMENT, null, null);

                if(!GMLTags.GML_POINT.equals(parser.getElementName())){

                    parser.nextTag();

                    parser.require(EventType.END_ELEMENT, GMLTags.GML_POINT);

                }

                return point;        

        }

        /**

         * It parses a tag

         * @param parser

         * @param handler

         * @param tag

         * @param id

         * @param srsName

         * @return

         * @throws XmlStreamException

         * @throws IOException

         */

        protected Object parseTag(IXmlStreamReader parser,GPEDefaultGmlParser handler, String id, String srsName) throws XmlStreamException, IOException{

            parser.require(EventType.START_ELEMENT, null, null);

            final QName coordinatesTag = parser.getElementName();

                Object point = null;

                final IBindingProfile profile = handler.getProfile();

        final IGPEContentHandler contentHandler = handler.getContentHandler();

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

            CoordinatesTypeIterator coordinatesIterator = profile.getCoordinatesTypeBinding();

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

            point = contentHandler.startPoint(id, coordinatesIterator, srsName);

            parser.require(EventType.END_ELEMENT, GMLTags.GML_COORDINATES);

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

            CoordTypeIterator coordinatesIterator = profile.getCoordTypeBinding();

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

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

            point = contentHandler.startPoint(id, coordinatesIterator, srsName);

            QName elementName = parser.getElementName();

            EventType eventType = parser.getEventType();

            parser.require(EventType.END_ELEMENT, GMLTags.GML_COORD);

        }else{

            throw new IllegalArgumentException("Unknown coordinates tag, expected one of gml:coordinates, gml:coords");

        }

        parser.require(EventType.END_ELEMENT, coordinatesTag);

                return point;

        }

}