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root / trunk / libraries / libGPE-GML / src / org / gvsig / gpe / gml / bindings / FeatureCollectionBinding.java @ 12418

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package org.gvsig.gpe.gml.bindings;
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import java.io.IOException;
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import java.util.Hashtable;
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import org.gvsig.gpe.gml.GMLTags;
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import org.gvsig.gpe.gml.GPEGmlParser;
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import org.gvsig.gpe.gml.bindings.geometries.BoundedByTypeBinding;
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import org.gvsig.gpe.gml.utils.CompareUtils;
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import org.gvsig.gpe.gml.utils.GMLUtilsParser;
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import org.xmlpull.v1.XmlPullParser;
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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: FeatureCollectionBinding.java 12418 2007-06-29 12:19:48Z jorpiell $
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 * $Log$
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 * Revision 1.2  2007-06-29 12:19:34  jorpiell
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 * The schema validation is made independently of the concrete writer
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 *
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 * Revision 1.1  2007/06/07 14:53:30  jorpiell
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 * Add the schema support
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 *
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 *
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 */
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/**
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 * This class parses the gml objects that has a 
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 * gml:FeatureCollection type. Example:
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 * <p>
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 * <pre>
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 * <code>
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 * &lt;gml:featureCollection&gt;
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 * &lt;gml:featureMember&gt; 
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 * &lt;/gml:featureMember&gt;
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 * &lt;gml:featureMember&gt; 
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 * &lt;/gml:featureMember&gt;
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 * &lt;/gml:featureCollection&gt;
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 * </code>
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 * </pre>
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 * </p>
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 * @author Jorge Piera LLodr? (jorge.piera@iver.es)
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 */
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public class FeatureCollectionBinding {
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        /**
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         * It parses a feature collection
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         * @param parser
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         * The XML parser
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         * @param handler
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         * The GPE parser that contains the content handler and
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         * the error handler
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         * @return
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         * A feature
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         * @throws XmlPullParserException
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         * @throws IOException
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         */
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        public static Object parse(XmlPullParser parser,GPEGmlParser handler) throws XmlPullParserException, IOException {
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                boolean endCollection = false;
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                int currentTag;                
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                Object layer = null;        
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                //Used to finish to parse the current feature collection
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                String layerRootType = parser.getName();
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                Hashtable attributes = GMLUtilsParser.getAttributes(parser);                
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                String fid = FeatureTypeBinding.getID(attributes);
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                layer = handler.getContentHandler().startLayer(fid, null, null, null, null, null, null);
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                String tag = parser.getName();
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                currentTag = parser.getEventType();
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                while (!endCollection){
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                        switch(currentTag){
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                        case XmlPullParser.START_TAG:
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                                if (CompareUtils.compareWithOutNamespace(tag,GMLTags.GML_NAME)){
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                                        parser.next();
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                                        handler.getContentHandler().addNameToLayer(parser.getText(), layer);
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                                }else if (CompareUtils.compareWithOutNamespace(tag,GMLTags.GML_DESCRIPTION)){
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                                        parser.next();
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                                        handler.getContentHandler().addDescriptionToLayer(parser.getText(), layer);
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                                }else if (CompareUtils.compareWithOutNamespace(tag,GMLTags.GML_BOUNDEDBY)){
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                                        Object bbox = BoundedByTypeBinding.parse(parser, handler);
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                                        handler.getContentHandler().addBboxToLayer(bbox, layer);
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                                }else if (CompareUtils.compareWithOutNamespace(tag,GMLTags.GML_FEATUREMEMBER)){
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                                        Object feature = FeatureMemberTypeBinding.parse(parser, handler);
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                                        handler.getContentHandler().addFeatureToLayer(feature, layer);
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                                }else{
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                                        if (!(layerRootType.compareTo(tag) == 0)){                                                
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                                                //Feature members
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                                                Object feature = FeatureTypeBinding.parse(parser, handler);
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                                                handler.getContentHandler().addFeatureToLayer(feature, layer);
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                                        }
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                                }
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                                break;
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                        case XmlPullParser.END_TAG:
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                                if (tag.compareTo(layerRootType) == 0){                                                
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                                        endCollection = true;
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                                        handler.getContentHandler().endLayer(layer);
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                                }
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                                break;
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                        case XmlPullParser.TEXT:                                        
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                                break;
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                        case XmlPullParser.END_DOCUMENT:
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                                endCollection = true;
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                                break;
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                        }
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                        if (!endCollection){                                        
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                                currentTag = parser.next();
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                                tag = parser.getName();
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                        }
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                }                        
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                return layer;        
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        }
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}