Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/MapInfoServiceImpl.java @ 8870:c26fb37899ca

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Introduced groups for modules. Modules marked with the same group-id, will be put together in the ui. Also using now the localization info from the server instead of localizing the modules again on the client side.
author gernotbelger
date Wed, 07 Feb 2018 11:59:13 +0100
parents 5e38e2924c07
children 0a5239a1e46e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.server;
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10
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11 import com.google.gwt.core.client.GWT;
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12 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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13
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14 import org.dive4elements.artifacts.common.utils.XMLUtils;
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15 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
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16 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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17 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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18 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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19 import org.dive4elements.river.client.client.services.MapInfoService;
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20 import org.dive4elements.river.client.shared.exceptions.ServerException;
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21 import org.dive4elements.river.client.shared.model.BBox;
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22 import org.dive4elements.river.client.shared.model.MapInfo;
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23
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24 import org.apache.log4j.Logger;
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25 import org.w3c.dom.Document;
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26 import org.w3c.dom.Element;
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27
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28
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29 /**
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30 * This service fetches a document that contains meta information for a specific
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31 * chart.
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32 *
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33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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34 */
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35 public class MapInfoServiceImpl
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36 extends RemoteServiceServlet
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37 implements MapInfoService
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38 {
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39 private static final Logger log =
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40 Logger.getLogger(MapInfoServiceImpl.class);
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41
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42
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43 public static final String XPATH_RIVER =
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44 "/mapinfo/river/@name";
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45
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46 public static final String XPATH_SRID =
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47 "/mapinfo/river/srid/@value";
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48
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49 public static final String XPATH_BBOX =
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50 "/mapinfo/river/bbox/@value";
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51
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52 public static final String XPATH_RIVER_WMS =
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53 "/mapinfo/river/river-wms/@url";
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54
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55 public static final String XPATH_RIVER_LAYERS =
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56 "/mapinfo/river/river-wms/@layers";
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57
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58 public static final String XPATH_WMS_URL =
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59 "/mapinfo/river/background-wms/@url";
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60
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61 public static final String XPATH_WMS_LAYERS =
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62 "/mapinfo/river/background-wms/@layers";
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63
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64 public static final String ERROR_NO_MAPINFO_FOUND =
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65 "mapinfo_service_no_result";
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66
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67
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68 @Override
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69 public MapInfo getMapInfo(String locale, String river)
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70 throws ServerException
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71 {
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72 log.info("MapInfoServiceImpl.getMapInfo");
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73
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74 String url = getServletContext().getInitParameter("server-url");
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75
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76 Document request = getRequestDocument(river, "rivermap");
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77
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78 HttpClient client = new HttpClientImpl(url, locale);
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79
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80 try {
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81 log.debug("MapInfoServiceImpl.callService");
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82 Document result = client.callService(url, "mapinfo", request);
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83
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84 if (result == null) {
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85 log.warn("MapInfo service returned no result.");
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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 return getMapInfo(result);
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90 }
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91 catch (ConnectionException ce) {
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92 log.error(ce, ce);
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93 }
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94
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95 throw new ServerException(ERROR_NO_MAPINFO_FOUND);
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96 }
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97
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98
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99 public static Document getRequestDocument(
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100 String rivername,
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101 String maptypeStr
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102 ) {
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103 log.debug("MapInfoServiceImpl.getRequestDocument");
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104
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105 Document request = XMLUtils.newDocument();
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106 ElementCreator cr = new ElementCreator(request, null, null);
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107
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108 Element root = cr.create("mapinfo");
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109 Element river = cr.create("river");
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110 Element maptype = cr.create("maptype");
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111
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112 river.setTextContent(rivername);
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113 maptype.setTextContent(maptypeStr);
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114
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115 request.appendChild(root);
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116 root.appendChild(river);
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117 root.appendChild(maptype);
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118
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119 return request;
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120 }
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121
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122
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123 public static MapInfo getMapInfo(Document result) {
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124 log.debug("MapInfoServiceImpl.getMapInfo");
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125
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126 String river = XMLUtils.xpathString(result, XPATH_RIVER, null);
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127 String sridStr = XMLUtils.xpathString(result, XPATH_SRID, null);
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128 String bboxS = XMLUtils.xpathString(result, XPATH_BBOX, null);
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129 BBox bbox = BBox.getBBoxFromString(bboxS);
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130
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131 String riverWMS = XMLUtils.xpathString(
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132 result, XPATH_RIVER_WMS, null);
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133 String riverLayers = XMLUtils.xpathString(
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134 result, XPATH_RIVER_LAYERS, null);
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135 String wmsURL = XMLUtils.xpathString(
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136 result, XPATH_WMS_URL, null);
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137 String wmsLayers = XMLUtils.xpathString(
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138 result, XPATH_WMS_LAYERS, null);
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139
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140 int srid = 4326;
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141
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142 try {
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143 srid = Integer.parseInt(sridStr);
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144 }
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145 catch (NumberFormatException nfe) {
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146 GWT.log("Could not parse SRID String: " + sridStr);
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147 }
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148
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149 return new MapInfo(
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150 river, srid, bbox, riverWMS, riverLayers, wmsURL, wmsLayers);
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151 }
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152 }
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153 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org