Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/ShapeDataCollector.java @ 1115:f953c9a559d8

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Added license file and license headers. gnv-artifacts/trunk@1260 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:46:55 +0000
parents 22c18083225e
children
rev   line source
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f953c9a559d8 Added license file and license headers.
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.exports;
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11 import com.vividsolutions.jts.geom.Point;
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13 import com.vividsolutions.jts.io.ParseException;
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14 import com.vividsolutions.jts.io.WKTReader;
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16 import de.intevation.gnv.geobackend.base.Result;
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18 import de.intevation.gnv.state.exception.StateException;
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19
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20 import org.apache.log4j.Logger;
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21
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22 /**
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23 * This class is a specialization of <code>DefaultDataCollector</code>. The
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24 * difference between these classes is, that this class extracts points served
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25 * by a wkt string.
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26 *
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27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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28 */
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29 public class ShapeDataCollector
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30 extends DefaultDataCollector
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31 {
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32 /**
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33 * Logger used for logging with log4j.
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34 */
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35 private Logger log = Logger.getLogger(ShapeDataCollector.class);
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36
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37 /**
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38 * WKTReader to parse points from wkt strings.
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39 */
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40 protected WKTReader wktReader = new WKTReader();
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41
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42 /**
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43 * Constructor
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44 *
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45 * @param names Attributes used to be extracted.
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46 */
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47 public ShapeDataCollector(String[] names) {
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48 super(names);
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49 }
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50
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51 /**
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52 * This method takes point from wkt strings as well and split them into x
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53 * and y coordinate.
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54 *
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55 * @see de.intevation.gnv.exports.Export.DataCollector#getData(Result)
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56 */
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57 public String[] getData(Result result)
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58 throws StateException {
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59
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60 if (rd == null)
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61 init(result);
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62
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63 try {
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64 String [] entries = new String[names.length+1];
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65 int j = 0;
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66 for (int i = 0; i < names.length; i++) {
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67
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68 if (names[i].equals("SHAPE")) {
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69 Point p = (Point)wktReader.read(result.getString("SHAPE"));
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70
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71 entries[j++] = ""+p.getX();
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72 entries[j++] = ""+p.getY();
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73 }
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74 else {
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75 entries[j++] = result.getString(names[i]);
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76 }
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77 }
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79 return entries;
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80 }
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81 catch (ParseException pe) {
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82 log.error(pe, pe);
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83 throw new StateException(
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84 "Error occured while parsing a Point from WKT.");
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85 }
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86 }
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87 }
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88 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org