Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/MapInfoServiceImpl.java @ 4740:fb135e1dfa35

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Added 'type' attribute to <dc:variable/> element. If an optional 'type' attribute is given the result of the XPATH expression is interpreted as this type. Valid values are 'number', 'bool', 'node' and 'nodeset'. All other defaults to 'string' which also is the default if nor type is given.
author Sascha L. Teichmann <teichmann@intevation.de>
date Wed, 02 Jan 2013 15:31:53 +0100
parents 02cf2b1dff84
children 5014a84c0c7d
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 com.google.gwt.user.server.rpc.RemoteServiceServlet;
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4
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5 import de.intevation.artifacts.common.utils.XMLUtils;
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6 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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7 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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8 import de.intevation.artifacts.httpclient.http.HttpClient;
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9 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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10 import de.intevation.flys.client.client.services.MapInfoService;
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11 import de.intevation.flys.client.shared.exceptions.ServerException;
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12 import de.intevation.flys.client.shared.model.BBox;
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13 import de.intevation.flys.client.shared.model.MapInfo;
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14
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15 import org.apache.log4j.Logger;
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16 import org.w3c.dom.Document;
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17 import org.w3c.dom.Element;
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18
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19
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20 /**
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21 * This service fetches a document that contains meta information for a specific
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22 * chart.
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23 *
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24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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25 */
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26 public class MapInfoServiceImpl
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27 extends RemoteServiceServlet
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28 implements MapInfoService
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29 {
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30 private static final Logger logger =
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31 Logger.getLogger(MapInfoServiceImpl.class);
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32
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33
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34 public static final String XPATH_RIVER =
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35 "/mapinfo/river/@name";
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36
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37 public static final String XPATH_SRID =
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38 "/mapinfo/river/srid/@value";
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39
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40 public static final String XPATH_BBOX =
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41 "/mapinfo/river/bbox/@value";
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42
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43 public static final String XPATH_RIVER_WMS =
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44 "/mapinfo/river/river-wms/@url";
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45
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46 public static final String XPATH_RIVER_WMS_LAYERS =
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47 "/mapinfo/river/river-wms/@layers";
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48
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49 public static final String XPATH_WMS_URL =
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50 "/mapinfo/river/background-wms/@url";
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51
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52 public static final String XPATH_WMS_LAYERS =
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53 "/mapinfo/river/background-wms/@layers";
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54
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55 public static final String ERROR_NO_MAPINFO_FOUND =
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56 "mapinfo_service_no_result";
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57
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58
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59 @Override
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60 public MapInfo getMapInfo(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 String url = getServletContext().getInitParameter("server-url");
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66
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67 Document request = getRequestDocument(river);;
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68
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69 HttpClient client = new HttpClientImpl(url, locale);
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70
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71 try {
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72 logger.debug("MapInfoServiceImpl.callService");
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73 Document result = client.callService(url, "mapinfo", request);
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74
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75 if (result == null) {
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76 logger.warn("MapInfo service returned no result.");
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77 throw new ServerException(ERROR_NO_MAPINFO_FOUND);
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78 }
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79
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80 return getMapInfo(result);
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81 }
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82 catch (ConnectionException ce) {
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83 logger.error(ce, ce);
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84 }
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85
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86 throw new ServerException(ERROR_NO_MAPINFO_FOUND);
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87 }
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88
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89
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90 public static Document getRequestDocument(String rivername) {
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91 logger.debug("MapInfoServiceImpl.getRequestDocument");
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92
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93 Document request = XMLUtils.newDocument();
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94 ElementCreator cr = new ElementCreator(request, null, null);
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95
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96 Element root = cr.create("mapinfo");
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97 Element river = cr.create("river");
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98
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99 river.setTextContent(rivername);
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100
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101 request.appendChild(root);
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102 root.appendChild(river);
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103
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104 return request;
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105 }
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106
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107
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108 public static MapInfo getMapInfo(Document result) {
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109 logger.debug("MapInfoServiceImpl.getMapInfo");
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110
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111 String river = XMLUtils.xpathString(result, XPATH_RIVER, null);
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112 String sridStr = XMLUtils.xpathString(result, XPATH_SRID, null);
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113 String bboxS = XMLUtils.xpathString(result, XPATH_BBOX, null);
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114 BBox bbox = BBox.getBBoxFromString(bboxS);
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115
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116 String riverWMS = XMLUtils.xpathString(result, XPATH_RIVER_WMS, null);
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117 String riverLayers = XMLUtils.xpathString(result, XPATH_RIVER_WMS_LAYERS, null);
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118 String wmsURL = XMLUtils.xpathString(result, XPATH_WMS_URL, null);
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119 String wmsLayers = XMLUtils.xpathString(result, XPATH_WMS_LAYERS, null);
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120
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121 int srid = 4326;
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122
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123 try {
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124 srid = Integer.parseInt(sridStr);
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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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 catch (NumberFormatException nfe) {
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 // do nothing
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>
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129
4632
02cf2b1dff84 Make floodmap riveraxis layer name configurable.
Christian Lins <christian.lins@intevation.de>
parents: 1425
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130 return new MapInfo(river, srid, bbox, riverWMS, riverLayers, wmsURL, wmsLayers);
828
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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131 }
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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132 }
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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133 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org