Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/ShapeDataCollector.java @ 771:a0e63136954e

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Added and repaired javadoc in de.intevation.gnv.exports package. gnv-artifacts/trunk@827 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 25 Mar 2010 09:01:14 +0000
parents e964a3d8f7bc
children 9a828e5a2390
rev   line source
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1 package de.intevation.gnv.exports;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import com.vividsolutions.jts.io.WKTReader;
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6 import com.vividsolutions.jts.io.ParseException;
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7 import com.vividsolutions.jts.geom.Point;
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9 import de.intevation.gnv.geobackend.base.Result;
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10 import de.intevation.gnv.state.exception.StateException;
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13 /**
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14 * This class is a specialization of {@link #DefaultDataCollector}. The
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15 * difference between these classes is, that this class extracts points served
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16 * by a wkt string.
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17 *
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18 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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19 */
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20 public class ShapeDataCollector
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21 extends DefaultDataCollector
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22 {
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23 /**
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24 * Logger used for logging with log4j.
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25 */
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26 private Logger log = Logger.getLogger(ShapeDataCollector.class);
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27
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28 /**
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29 * WKTReader to parse points from wkt strings.
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30 */
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31 protected WKTReader wktReader = new WKTReader();
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32
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33 /**
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34 * Constructor
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35 *
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36 * @param names Attributes used to be extracted.
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37 */
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38 public ShapeDataCollector(String[] names) {
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39 super(names);
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40 }
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41
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42 /**
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43 * This method takes point from wkt strings as well and split them into x
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44 * and y coordinate.
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45 *
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46 * @see de.intevation.gnv.exports.Export.DataCollector#getData(Result)
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47 */
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48 public String[] getData(Result result)
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49 throws StateException {
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50
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51 if (rd == null)
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52 init(result);
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53
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54 try {
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55 String [] entries = new String[names.length+1];
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56 int j = 0;
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57 for (int i = 0; i < names.length; i++) {
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58
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59 if (names[i].equals("SHAPE")) {
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60 Point p = (Point)wktReader.read(result.getString("SHAPE"));
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62 entries[j++] = ""+p.getX();
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63 entries[j++] = ""+p.getY();
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64 }
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65 else {
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66 entries[j++] = result.getString(names[i]);
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67 }
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68 }
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70 return entries;
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71 }
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72 catch (ParseException pe) {
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73 log.error(pe, pe);
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74 throw new StateException(
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75 "Error occured while parsing a Point from WKT.");
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76 }
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77 }
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78 }
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79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org