Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/MapInfoServiceImpl.java @ 8856:5e38e2924c07 3.2.x

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Fix code style.
author Tom Gottfried <tom@intevation.de>
date Thu, 18 Jan 2018 20:12:01 +0100
parents 238fc722f87a
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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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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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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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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Christian Lins <christian.lins@intevation.de>
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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