ingo@1115: /*
ingo@1115:  * Copyright (c) 2010 by Intevation GmbH
ingo@1115:  *
ingo@1115:  * This program is free software under the LGPL (>=v2.1)
ingo@1115:  * Read the file LGPL.txt coming with the software for details
ingo@1115:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@1115:  */
ingo@1115: 
ingo@235: package de.intevation.gnv.exports;
ingo@235: 
sascha@779: import com.vividsolutions.jts.geom.Point;
sascha@779: 
sascha@779: import com.vividsolutions.jts.io.ParseException;
sascha@779: import com.vividsolutions.jts.io.WKTReader;
sascha@779: 
sascha@779: import de.intevation.gnv.geobackend.base.Result;
sascha@779: 
sascha@779: import de.intevation.gnv.state.exception.StateException;
sascha@779: 
ingo@235: import org.apache.log4j.Logger;
ingo@235: 
ingo@235: /**
ingo@815:  * This class is a specialization of <code>DefaultDataCollector</code>. The
ingo@771:  * difference between these classes is, that this class extracts points served
ingo@771:  * by a wkt string.
ingo@771:  *
ingo@771:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@235:  */
ingo@235: public class ShapeDataCollector
ingo@235: extends DefaultDataCollector
ingo@235: {
ingo@771:     /**
ingo@771:      * Logger used for logging with log4j.
ingo@771:      */
ingo@235:     private Logger log = Logger.getLogger(ShapeDataCollector.class);
ingo@235: 
ingo@771:     /**
ingo@771:      * WKTReader to parse points from wkt strings.
ingo@771:      */
ingo@235:     protected WKTReader wktReader = new WKTReader();
ingo@235: 
ingo@771:     /**
ingo@771:      * Constructor
ingo@771:      *
ingo@771:      * @param names Attributes used to be extracted.
ingo@771:      */
ingo@235:     public ShapeDataCollector(String[] names) {
ingo@235:         super(names);
ingo@235:     }
ingo@235: 
ingo@771:     /**
ingo@771:      * This method takes point from wkt strings as well and split them into x
ingo@771:      * and y coordinate.
ingo@771:      *
ingo@771:      * @see de.intevation.gnv.exports.Export.DataCollector#getData(Result)
ingo@771:      */
sascha@778:     public String[] getData(Result result)
tim@335:     throws StateException {
ingo@235: 
ingo@235:         if (rd == null)
ingo@235:             init(result);
ingo@235: 
ingo@235:         try {
ingo@235:             String [] entries = new String[names.length+1];
ingo@235:             int j             = 0;
ingo@235:             for (int i = 0; i < names.length; i++) {
sascha@778: 
ingo@235:                 if (names[i].equals("SHAPE")) {
ingo@235:                     Point p  = (Point)wktReader.read(result.getString("SHAPE"));
ingo@235: 
ingo@235:                     entries[j++] = ""+p.getX();
ingo@235:                     entries[j++] = ""+p.getY();
ingo@235:                 }
ingo@235:                 else {
ingo@235:                     entries[j++] = result.getString(names[i]);
ingo@235:                 }
ingo@235:             }
ingo@235: 
ingo@235:             return entries;
ingo@235:         }
ingo@235:         catch (ParseException pe) {
ingo@235:             log.error(pe, pe);
tim@335:             throw new StateException(
ingo@235:                 "Error occured while parsing a Point from WKT.");
ingo@235:         }
ingo@235:     }
ingo@235: }
ingo@771: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :