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root / trunk / libraries / libGPE-KML / src / org / gvsig / gpe / kml / KmlFeaturesIterator.java @ 10637

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package org.gvsig.gpe.kml;
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import java.io.IOException;
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import org.gvsig.exceptions.BaseException;
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import org.gvsig.gpe.gml.factories.IGeometriesFactory;
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import org.gvsig.gpe.kml.bindings.FolderBinding;
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import org.gvsig.gpe.kml.bindings.PlaceMarketBinding;
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import org.gvsig.gpe.kml.engine.AbstractFeaturesIterator;
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import org.gvsig.gpe.kml.engine.IReaderFile;
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import org.gvsig.gpe.kml.exceptions.KmlBodyParseException;
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import org.kxml2.io.KXmlParser;
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import org.xmlpull.v1.XmlPullParserException;
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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 *
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 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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 *
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 * For more information, contact:
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 *
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 *  Generalitat Valenciana
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 *   Conselleria d'Infraestructures i Transport
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 *   Av. Blasco Ib??ez, 50
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 *   46010 VALENCIA
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 *   SPAIN
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 *
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 *      +34 963862235
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 *   gvsig@gva.es
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 *      www.gvsig.gva.es
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 *
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 *    or
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 *
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 *   IVER T.I. S.A
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 *   Salamanca 50
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 *   46005 Valencia
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 *   Spain
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 *
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 *   +34 963163400
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 *   dac@iver.es
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 */
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/* CVS MESSAGES:
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 *
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 * $Id: KmlFeaturesIterator.java 10637 2007-03-07 08:19:11Z jorpiell $
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 * $Log$
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 * Revision 1.1  2007-03-07 08:19:10  jorpiell
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 * Pasadas las clases de KML de libGPE-GML a libGPE-KML
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 *
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 * Revision 1.1  2007/02/28 11:48:31  csanchez
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 * *** empty log message ***
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 *
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 * Revision 1.1  2007/02/20 10:53:20  jorpiell
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 * A?adidos los proyectos de kml y gml antiguos
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 *
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 * Revision 1.1  2007/02/12 13:49:18  jorpiell
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 * A?adido el driver de KML
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 *
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 *
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 */
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/**
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 * @author Jorge Piera Llodr? (piera_jor@gva.es)
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 */
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public class KmlFeaturesIterator extends AbstractFeaturesIterator{
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        private static String currentFolder = null;
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        public KmlFeaturesIterator(IReaderFile reader, IGeometriesFactory factory) {
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                super(reader, factory);                
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        }
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        /*
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         *  (non-Javadoc)
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         * @see org.gvsig.remoteClient.gmlEngine.IFeaturesIterator#hasNext()
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         */
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        public boolean hasNext() throws BaseException {
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                boolean endFile = false;
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                int currentTag;
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                boolean isFolder = false;
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                try {
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                        String tag = reader.getName();
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                        currentTag = reader.getEventType();
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                        while (!endFile){
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                                switch(currentTag){
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                                case KXmlParser.START_TAG:
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                                        if (tag.compareTo(KmlTags.PLACEMARK) == 0){
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                                                return true;
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                                        }else if(tag.compareTo(KmlTags.FOLDER) == 0){
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                                                currentFolder = (String)new FolderBinding(getGFactory()).parse(reader);
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                                                tag = reader.getName();
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                                        }
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                                        break;
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                                case KXmlParser.END_TAG:
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                                        if (tag.compareTo(KmlTags.ROOT) == 0){
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                                                endFile = true;
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                                        }
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                                        break;
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                                case KXmlParser.TEXT:                                        
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                                        break;
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                                }
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                                if (!endFile){                                        
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                                        if (!isFolder){
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                                                currentTag = reader.next();
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                                                tag = reader.getName();
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                                        }else{
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                                                isFolder = false;
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                                        }
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                                }
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                        }                        
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                } catch (XmlPullParserException e) {
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                        throw new KmlBodyParseException(e);
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                } catch (IOException e) {
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                        throw new KmlBodyParseException(e);
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                }
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                return false;
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        }
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        /*
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         *  (non-Javadoc)
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         * @see org.gvsig.remoteClient.gmlEngine.IFeaturesIterator#next()
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         */
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        public Object next() throws BaseException {
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                String tag = reader.getName();
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                if (tag.compareTo(KmlTags.PLACEMARK) == 0){
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                        return new PlaceMarketBinding(gFactory).parse(reader);
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                }
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                return null;
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        }
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        /**
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         * @return Returns the currentFolder.
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         */
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        public static String getCurrentFolder() {
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                if (currentFolder == null){
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                        return KmlTags.DEFAULT_LEGEND;
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                }
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                return currentFolder;
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        }
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}