Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/MapInfoServiceImpl.java @ 4910:a707ef048188

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author Raimund Renkert <rrenkert@intevation.de>
date Wed, 30 Jan 2013 14:42:17 +0100
parents 5014a84c0c7d
children
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 com.google.gwt.core.client.GWT;
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4 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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5
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6 import de.intevation.artifacts.common.utils.XMLUtils;
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7 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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8 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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9 import de.intevation.artifacts.httpclient.http.HttpClient;
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10 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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11 import de.intevation.flys.client.client.services.MapInfoService;
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12 import de.intevation.flys.client.shared.exceptions.ServerException;
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13 import de.intevation.flys.client.shared.model.BBox;
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14 import de.intevation.flys.client.shared.model.MapInfo;
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15
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16 import org.apache.log4j.Logger;
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17 import org.w3c.dom.Document;
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18 import org.w3c.dom.Element;
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19
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20
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21 /**
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22 * This service fetches a document that contains meta information for a specific
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23 * chart.
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24 *
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25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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26 */
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27 public class MapInfoServiceImpl
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28 extends RemoteServiceServlet
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29 implements MapInfoService
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30 {
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31 private static final Logger logger =
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32 Logger.getLogger(MapInfoServiceImpl.class);
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33
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34
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35 public static final String XPATH_RIVER =
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36 "/mapinfo/river/@name";
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37
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38 public static final String XPATH_SRID =
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39 "/mapinfo/river/srid/@value";
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40
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41 public static final String XPATH_BBOX =
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42 "/mapinfo/river/bbox/@value";
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43
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44 public static final String XPATH_RIVER_WMS =
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45 "/mapinfo/river/river-wms/@url";
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46
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47 public static final String XPATH_RIVER_LAYERS =
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48 "/mapinfo/river/river-wms/@layers";
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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 @Override
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61 public MapInfo getMapInfo(String locale, String river)
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62 throws ServerException
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63 {
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64 logger.info("MapInfoServiceImpl.getMapInfo");
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65
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66 String url = getServletContext().getInitParameter("server-url");
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67
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68 Document request = getRequestDocument(river, "rivermap");
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69
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70 HttpClient client = new HttpClientImpl(url, locale);
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71
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72 try {
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73 logger.debug("MapInfoServiceImpl.callService");
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74 Document result = client.callService(url, "mapinfo", request);
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75
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76 if (result == null) {
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77 logger.warn("MapInfo service returned no result.");
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78 throw new ServerException(ERROR_NO_MAPINFO_FOUND);
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79 }
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80
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81 return getMapInfo(result);
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82 }
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83 catch (ConnectionException ce) {
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84 logger.error(ce, ce);
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85 }
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86
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87 throw new ServerException(ERROR_NO_MAPINFO_FOUND);
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88 }
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89
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90
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91 public static Document getRequestDocument(String rivername, String maptypeStr) {
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92 logger.debug("MapInfoServiceImpl.getRequestDocument");
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93
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94 Document request = XMLUtils.newDocument();
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95 ElementCreator cr = new ElementCreator(request, null, null);
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96
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97 Element root = cr.create("mapinfo");
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98 Element river = cr.create("river");
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99 Element maptype = cr.create("maptype");
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100
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101 river.setTextContent(rivername);
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102 maptype.setTextContent(maptypeStr);
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103
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104 request.appendChild(root);
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105 root.appendChild(river);
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106 root.appendChild(maptype);
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107
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108 return request;
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109 }
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110
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111
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112 public static MapInfo getMapInfo(Document result) {
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113 logger.debug("MapInfoServiceImpl.getMapInfo");
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114
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115 String river = XMLUtils.xpathString(result, XPATH_RIVER, null);
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116 String sridStr = XMLUtils.xpathString(result, XPATH_SRID, null);
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117 String bboxS = XMLUtils.xpathString(result, XPATH_BBOX, null);
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118 BBox bbox = BBox.getBBoxFromString(bboxS);
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119
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120 String riverWMS = XMLUtils.xpathString(result, XPATH_RIVER_WMS, null);
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121 String riverLayers = XMLUtils.xpathString(result, XPATH_RIVER_LAYERS, null);
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122 String wmsURL = XMLUtils.xpathString(result, XPATH_WMS_URL, null);
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123 String wmsLayers = XMLUtils.xpathString(result, XPATH_WMS_LAYERS, null);
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124
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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125 int srid = 4326;
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126
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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127 try {
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128 srid = Integer.parseInt(sridStr);
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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>
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130 catch (NumberFormatException nfe) {
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5014a84c0c7d Add "maptype" parameter to MapInfoService.
Christian Lins <christian.lins@intevation.de>
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131 GWT.log("Could not parse SRID String: " + sridStr);
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132 }
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133
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5014a84c0c7d Add "maptype" parameter to MapInfoService.
Christian Lins <christian.lins@intevation.de>
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134 return new MapInfo(
5014a84c0c7d Add "maptype" parameter to MapInfoService.
Christian Lins <christian.lins@intevation.de>
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135 river, srid, bbox, riverWMS, riverLayers, wmsURL, wmsLayers);
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136 }
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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137 }
910b03de6857 Added a service to get some basic spatial information used for map creation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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138 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org