Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/MapInfoServiceImpl.java @ 1380:2d617c48ca5f
Issue 400.
Iterate over a list of all theme settings to display all available settings.
flys-client/trunk@3132 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Raimund Renkert <raimund.renkert@intevation.de> |
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date | Tue, 01 Nov 2011 15:01:37 +0000 |
parents | ab8eb2f544f2 |
children | bc06a671ef60 |
rev | line source |
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1 package de.intevation.flys.client.server; |
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2 |
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3 import org.w3c.dom.Document; |
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4 import org.w3c.dom.Element; |
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5 |
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6 import org.apache.log4j.Logger; |
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7 |
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8 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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9 |
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10 import de.intevation.artifacts.common.utils.XMLUtils; |
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11 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; |
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12 |
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13 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; |
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14 import de.intevation.artifacts.httpclient.http.HttpClient; |
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15 import de.intevation.artifacts.httpclient.http.HttpClientImpl; |
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16 |
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17 import de.intevation.flys.client.shared.exceptions.ServerException; |
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18 import de.intevation.flys.client.shared.model.BBox; |
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19 import de.intevation.flys.client.shared.model.MapInfo; |
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20 |
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21 import de.intevation.flys.client.client.services.MapInfoService; |
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22 |
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23 |
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24 /** |
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25 * This service fetches a document that contains meta information for a specific |
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26 * chart. |
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27 * |
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28 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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29 */ |
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30 public class MapInfoServiceImpl |
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31 extends RemoteServiceServlet |
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32 implements MapInfoService |
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33 { |
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34 private static final Logger logger = |
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35 Logger.getLogger(MapInfoServiceImpl.class); |
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36 |
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37 |
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38 public static final String XPATH_RIVER = |
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39 "/mapinfo/river/@name"; |
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40 |
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41 public static final String XPATH_SRID = |
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42 "/mapinfo/river/srid/@value"; |
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43 |
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44 public static final String XPATH_BBOX = |
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45 "/mapinfo/river/bbox/@value"; |
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46 |
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47 public static final String XPATH_RIVER_WMS = |
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48 "/mapinfo/river/river-wms/@url"; |
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49 |
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50 public static final String XPATH_WMS_URL = |
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51 "/mapinfo/river/background-wms/@url"; |
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52 |
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53 public static final String XPATH_WMS_LAYERS = |
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54 "/mapinfo/river/background-wms/@layers"; |
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55 |
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56 public static final String ERROR_NO_MAPINFO_FOUND = |
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57 "mapinfo_service_no_result"; |
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58 |
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59 |
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60 public MapInfo getMapInfo(String url, String locale, String river) |
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61 throws ServerException |
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62 { |
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63 logger.info("MapInfoServiceImpl.getMapInfo"); |
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64 |
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65 Document request = getRequestDocument(river);; |
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66 |
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67 HttpClient client = new HttpClientImpl(url, locale); |
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68 |
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69 try { |
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70 logger.debug("MapInfoServiceImpl.callService"); |
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71 Document result = client.callService(url, "mapinfo", request); |
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72 |
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73 if (result == null) { |
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74 logger.warn("MapInfo service returned no result."); |
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75 throw new ServerException(ERROR_NO_MAPINFO_FOUND); |
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76 } |
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77 |
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78 return getMapInfo(result); |
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79 } |
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80 catch (ConnectionException ce) { |
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81 logger.error(ce, ce); |
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82 } |
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83 |
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84 throw new ServerException(ERROR_NO_MAPINFO_FOUND); |
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85 } |
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86 |
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87 |
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88 public static Document getRequestDocument(String rivername) { |
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89 logger.debug("MapInfoServiceImpl.getRequestDocument"); |
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90 |
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91 Document request = XMLUtils.newDocument(); |
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92 ElementCreator cr = new ElementCreator(request, null, null); |
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93 |
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94 Element root = cr.create("mapinfo"); |
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95 Element river = cr.create("river"); |
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96 |
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97 river.setTextContent(rivername); |
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98 |
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99 request.appendChild(root); |
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100 root.appendChild(river); |
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101 |
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102 return request; |
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103 } |
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104 |
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105 |
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106 public static MapInfo getMapInfo(Document result) { |
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107 logger.debug("MapInfoServiceImpl.getMapInfo"); |
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108 |
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109 String river = XMLUtils.xpathString(result, XPATH_RIVER, null); |
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110 String sridStr = XMLUtils.xpathString(result, XPATH_SRID, null); |
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111 String bboxS = XMLUtils.xpathString(result, XPATH_BBOX, null); |
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112 BBox bbox = BBox.getBBoxFromString(bboxS); |
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113 |
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114 String riverWMS = XMLUtils.xpathString(result, XPATH_RIVER_WMS, null); |
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115 String wmsURL = XMLUtils.xpathString(result, XPATH_WMS_URL, null); |
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116 String wmsLayers = XMLUtils.xpathString(result, XPATH_WMS_LAYERS, null); |
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117 |
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118 int srid = 4326; |
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119 |
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120 try { |
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121 srid = Integer.parseInt(sridStr); |
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122 } |
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123 catch (NumberFormatException nfe) { |
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124 // do nothing |
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125 } |
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126 |
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127 return new MapInfo(river, srid, bbox, riverWMS, wmsURL, wmsLayers); |
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128 } |
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129 } |
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130 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |