Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/MapInfoServiceImpl.java @ 1414:3484cbfaf369

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Create new Artifacts for selected WMS layers of the ExternalWMSWindow. flys-client/trunk@3304 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 22 Nov 2011 20:13:16 +0000
parents ab8eb2f544f2
children bc06a671ef60
rev   line source
828
910b03de6857 Added a service to get some basic spatial information used for map creation.
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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 }
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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126
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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127 return new MapInfo(river, srid, bbox, riverWMS, wmsURL, wmsLayers);
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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128 }
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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129 }
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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130 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org