Application: gvSIG desktop » gvSIG data provider for GPE

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

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

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.utils.GMLProjectionFactory;

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

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

import org.gvsig.gpe.parser.IGPEErrorHandler;

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 org.gvsig.gpe.xml.utils.XMLAttributesIterator;

/* 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:GeometryBinding.java 195 2007-11-26 09:02:22Z jpiera $

 * $Log$

 * Revision 1.7  2007/05/24 07:29:47  csanchez

 * A?adidos Alias GML2

 *

 * Revision 1.6  2007/05/18 10:41:01  csanchez

 * Actualizaci?n libGPE-GML eliminaci?n de clases inecesarias

 *

 * Revision 1.5  2007/05/15 11:55:11  jorpiell

 * MultiGeometry is now supported

 *

 * Revision 1.4  2007/05/15 07:30:38  jorpiell

 * Add the geometryProperties tags

 *

 * Revision 1.3  2007/05/14 11:18:51  jorpiell

 * ProjectionFactory updated

 *

 * 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

 *

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

 * Add a constructor with the name and the description fields

 *

 *

 */

/**

 * This class parses a geometry. It is also used 

 * to get the attributes for a GML geometry. 

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

 */

public class GeometryBinding {

        protected String srsName = null;

        protected String id = null;

        /**

         * It parses the gml:Geometry tag

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * A geometry

         * @throws XmlStreamException

         * @throws IOException

         */

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

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

            Object geometry = parseTag(parser, handler);

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

            return geometry;

        }

        /**

         * It parses an XML tag

         * @param parser

         * @param handler

         * @param tag

         * @return

         * @throws XmlStreamException

         * @throws IOException

         */

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

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

        final QName tag = parser.getElementName();

        Object geometry = null;

        // PROPERTIES

        final IBindingProfile profile = handler.getProfile();

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

            geometry = profile.getGeometryPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getPointPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getLineStringPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getPolygonPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiPointPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiLineStringPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiPolygonPropertyTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiGeometryPropertyTypeBinding().parse(parser, handler);

        }

        // GEOMETRIES

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

            geometry = profile.getPointMemberTypeBinding().parse(parser, handler);

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

            geometry = profile.getPointTypeBinding().parse(parser, handler);

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

            geometry = profile.getLineStringMemberTypeBinding().parse(parser, handler);

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

            geometry = profile.getLineStringTypeBinding().parse(parser, handler);

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

            geometry = profile.getLinearRingTypeBinding().parse(parser, handler);

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

            geometry = profile.getPointMemberTypeBinding().parse(parser, handler);

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

            geometry = profile.getPolygonTypeBinding().parse(parser, handler);

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

            geometry = profile.getGeometryMemberTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiPointTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiLineStringTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiPolygonTypeBinding().parse(parser, handler);

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

            geometry = profile.getMultiGeometryTypeBinding().parse(parser, handler);

        }

        // POINT PROPERTY ALIASES

        else if (CompareUtils.compareWithNamespace(tag, GMLTags.GML_LOCATION)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_CENTEROF)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_POSITION)) {

            geometry = profile.getPointTypeBinding().parse(parser, handler);

        }

        // LINESTRING PROPERTY ALIASES

        else if (CompareUtils.compareWithNamespace(tag, GMLTags.GML_EDGEOF)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_CENTERLINEOF)) {

            geometry = profile.getLineStringPropertyTypeBinding().parse(parser, handler);

        }

        // POLYGON PROPERTY ALIASES

        else if (CompareUtils.compareWithNamespace(tag, GMLTags.GML_EXTENTOF)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_COVERAGE)) {

            geometry = profile.getPolygonPropertyTypeBinding().parse(parser, handler);

        }

        // MULTIPOINT PROPERTY ALIASES

        else if (CompareUtils.compareWithNamespace(tag, GMLTags.GML_MULTILOCATION)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_MULTIPOSITION)) {

            geometry = profile.getMultiPointPropertyTypeBinding().parse(parser, handler);

        }

        // MULTILINESTRING PROPERTY ALIASES

        else if (CompareUtils.compareWithNamespace(tag, GMLTags.GML_MULTIEDGEOF)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_MULTICENTERLINEOF)) {

            geometry = profile.getMultiLineStringPropertyTypeBinding().parse(parser, handler);

        }

        // MULTIPOLYGON PROPERTY ALIASES

        else if (CompareUtils.compareWithNamespace(tag, GMLTags.GML_MULTIEXTENTOF)

                || CompareUtils.compareWithNamespace(tag, GMLTags.GML_MULTICOVERAGE)) {

            geometry = profile.getMultiPolygonTypeBinding().parse(parser, handler);

        } else {

            throw new IllegalStateException("Found no binding for element " + tag);

        }

        // make sure the parse method consumed the element fully

        ///////parser.require(EventType.END_ELEMENT, tag.getNamespaceURI(), tag.getLocalPart());

        return geometry;

        }

    /**

     * Save about 20% the geometry parsing time by cacheing the gml to GPE CRS names

     */

    private Map gmlToGPESrsNames = new HashMap();

        /**

         * This method has to be invoked by all the geometries

         * before to make the parse process. It retrieves

         * the common geometry attributes

         * @param parser

         * The root geometry tag

         * @param errorHandler

         * To add the errors

         * @throws XmlStreamException 

         */

        protected void setAtributtes(IXmlStreamReader parser, IGPEErrorHandler errorHandler) throws XmlStreamException{

                XMLAttributesIterator attributesIteartor = new XMLAttributesIterator(parser);

                Map attributes = attributesIteartor.getAttributes();

                Object objId = attributes.get(GMLTags.GML_GID);

                if (objId != null){

                        id = (String)objId;

                }else{

                        id = null;

                }

                Object objSrs = attributes.get(GMLTags.GML_SRS_NAME);

                if(objSrs == null){

                    objSrs = attributes.get(new QName(GMLTags.GML_SRS_NAME.getLocalPart()));

                }

                if (objSrs != null){

                    srsName = (String) gmlToGPESrsNames.get(objSrs);

                    if(srsName == null){

                        srsName = GMLProjectionFactory.fromGMLToGPE((String)objSrs, errorHandler);

                        gmlToGPESrsNames.put(objSrs, srsName);

                    }

                }else{

                        srsName = null;

                }

        }

        /**

         * It returns a the geometry id attribute

         * @return

         * The id

         */

        public String getID(){

                return id;

        }        

        /**

         * It returns a the geometry srs attribute

         * @return

         * The srs

         */

        public String getSrs(){

                return srsName;

        }

}