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.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:MultiPointTypeBinding.java 371 2008-01-10 09:30:19Z jpiera $

 * $Log$

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

 * ProjectionFactory updated

 *

 * Revision 1.3  2007/05/14 09:52:53  jorpiell

 * Nullpointer exception fixed

 *

 * Revision 1.2  2007/05/14 09:31:06  jorpiell

 * Add the a new class to compare tags

 *

 * Revision 1.1  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:MultiPointType object. Example:

 * <p>

 * <pre>

 * <code> 

 * <MultiPoint gid="c731" srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">

 * <pointMember>

 * <Point gid="P6776">

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

 * </Point>

 * </pointMember>

 * <pointMember>

 * <Point gid="P6777">

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

 * </Point>

 * </pointMember>

 * </MultiPoint>

 * </code>

 * </pre>

 * </p> 

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

 */

public class MultiPointTypeBinding extends GeometryBinding{

        /**

         * It parses the gml:MultiPoint tag

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * A multipoint

         * @throws XmlStreamException

         * @throws IOException

         */

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

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

        boolean endFeature = false;

                EventType currentTag;

                Object multiPoint = null;                

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

                multiPoint = handler.getContentHandler().startMultiPoint(id, srsName);

                QName tag = parser.getElementName();

                currentTag = parser.getEventType();

                while (!endFeature){

                        switch(currentTag.getCode()){

                        case EventType.START_ELEMENT_CODE:

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

                                                Object point = handler.getProfile().getPointMemberTypeBinding().

                                                parse(parser, handler);

                                                handler.getContentHandler().addPointToMultiPoint(point, multiPoint);

                                        }

                                        break;

                                case EventType.END_ELEMENT_CODE:

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

                                                endFeature = true;        

                                                handler.getContentHandler().endMultiPoint(multiPoint);

                                        }

                                        break;

                                }

                                if (!endFeature){                                        

                                        currentTag = parser.nextTag();

                                        tag = parser.getElementName();

                                }

                        }                        

                return multiPoint;        

        }

}