| gvSIG desktop 1

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

import java.io.IOException;

import java.util.Map;

import javax.xml.namespace.QName;

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

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

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

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

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: FeatureCollectionBinding.java 350 2008-01-09 12:53:07Z jpiera $

 * $Log$

 * Revision 1.2  2007/06/29 12:19:34  jorpiell

 * The schema validation is made independently of the concrete writer

 *

 * Revision 1.1  2007/06/07 14:53:30  jorpiell

 * Add the schema support

 *

 *

 */

/**

 * This class parses the gml objects that has a 

 * gml:FeatureCollection type. Example:

 * <p>

 * <pre>

 * <code>

 * <gml:featureCollection>

 * <gml:featureMember> 

 * </gml:featureMember>

 * <gml:featureMember> 

 * </gml:featureMember>

 * </gml:featureCollection>

 * </code>

 * </pre>

 * </p>

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

 */

public class FeatureCollectionBinding {

        /**

         * It parses a feature collection

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * A feature

         * @throws XmlStreamException

         * @throws IOException

         */

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

                boolean endCollection = false;

                int currentTag;                

                Object layer = null;        

                //Used to finish to parse the current feature collection

                while(parser.getEventType()!= IXmlStreamReader.START_ELEMENT){

                        parser.next();

                }

                QName layerRootType = parser.getName();                

                Map attributes = GMLUtilsParser.getAttributes(parser);                

                String fid = handler.getProfile().getFeatureTypeBinding().getID(attributes);

                layer = handler.getContentHandler().startLayer(fid, parser.getName().getNamespaceURI(), null, null, null, null, null);

                QName tag = parser.getName();

                currentTag = parser.getEventType();

                while (!endCollection){

                        switch(currentTag){

                        case IXmlStreamReader.START_ELEMENT:

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

                                        parser.next();

                                        handler.getContentHandler().addNameToLayer(parser.getText(), layer);

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

                                        parser.next();

                                        handler.getContentHandler().addDescriptionToLayer(parser.getText(), layer);

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

                                        Object bbox = handler.getProfile().getBoundedByTypeBinding().

                                                        parse(parser, handler);

                                        handler.getContentHandler().addBboxToLayer(bbox, layer);

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

                                        GMLObject object = (GMLObject)handler.getProfile().getFeatureMemberTypeBinding().

                                                        parse(parser, handler);

                                        if (object.getType() == GMLObject.FEATURE){

                                                handler.getContentHandler().addFeatureToLayer(object.getObject(), layer);

                                        }else{

                                                handler.getContentHandler().addParentLayerToLayer(layer, object.getObject());

                                        }

                                }else{

                                        if (!(CompareUtils.compareWithNamespace(layerRootType,tag))){                                                

                                                //Feature members

                                                GMLObject object =(GMLObject)handler.getProfile().getFeatureTypeBinding().parse(parser, handler);

                                                handler.getContentHandler().addFeatureToLayer(object.getObject(), layer);

                                        }

                                }

                                break;

                        case IXmlStreamReader.END_ELEMENT:

                                if (CompareUtils.compareWithNamespace(tag,layerRootType)){                                                

                                        endCollection = true;

                                        handler.getContentHandler().endLayer(layer);

                                }

                                break;

                        case IXmlStreamReader.CHARACTERS:                                        

                                break;

                        case IXmlStreamReader.END_DOCUMENT:

                                endCollection = true;

                                break;

                        }

                        if (!endCollection){                                        

                                currentTag = parser.next();

                                tag = parser.getName();

                        }

                }                        

                return layer;        

        }

}