Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/MapInfoService.java @ 9726:0a5239a1e46e 3.2.x
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author | Tom Gottfried <tom@intevation.de> |
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date | Wed, 02 Mar 2022 10:26:50 +0100 |
parents | 5e38e2924c07 |
children | 7227621f8496 |
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.artifacts.services; |
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10 |
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11 import com.vividsolutions.jts.geom.Envelope; |
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12 |
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13 import org.dive4elements.artifactdatabase.XMLService; |
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14 import org.dive4elements.artifacts.CallMeta; |
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15 import org.dive4elements.artifacts.GlobalContext; |
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16 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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17 import org.dive4elements.artifacts.common.utils.Config; |
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18 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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19 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator; |
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20 import org.dive4elements.river.utils.GeometryUtils; |
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21 |
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22 import java.util.HashMap; |
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23 import java.util.Map; |
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24 |
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25 import javax.xml.xpath.XPathConstants; |
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26 |
9726 | 27 import org.apache.logging.log4j.Logger; |
28 import org.apache.logging.log4j.LogManager; | |
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29 import org.w3c.dom.Document; |
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30 import org.w3c.dom.Element; |
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31 import org.w3c.dom.Node; |
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32 |
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33 /** |
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34 * This service provides information about the supported rivers by this |
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35 * application. |
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36 * |
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37 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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38 */ |
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39 public class MapInfoService extends XMLService { |
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40 |
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41 /** XPath that points to the river.*/ |
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42 public static final String XPATH_RIVER = "/mapinfo/river/text()"; |
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43 |
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44 public static final String XPATH_MAPTYPE = "/mapinfo/maptype/text()"; |
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45 |
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46 private static final String XPATH_RIVER_PROJECTION = |
8856 | 47 "/artifact-database/*[local-name()=$maptype]/" |
48 + "river[@name=$river]/srid/@value"; | |
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49 |
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50 private static final String XPATH_RIVER_BACKGROUND = |
8856 | 51 "/artifact-database/*[local-name()=$maptype]/" |
52 + "river[@name=$river]/background-wms"; | |
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53 |
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54 private static final String XPATH_RIVER_WMS = |
8856 | 55 "/artifact-database/*[local-name()=$maptype]/" |
56 + "river[@name=$river]/river-wms"; | |
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57 |
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58 |
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59 /** The log used in this service.*/ |
9726 | 60 private static Logger log = LogManager.getLogger(MapInfoService.class); |
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61 |
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62 |
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63 /** |
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64 * The default constructor. |
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65 */ |
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66 public MapInfoService() { |
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67 } |
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68 |
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69 protected static String getStringXPath( |
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70 String query, |
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71 Map<String, String> variables |
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72 ) { |
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73 return (String)XMLUtils.xpath( |
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74 Config.getConfig(), query, XPathConstants.STRING, |
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75 null, variables); |
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76 } |
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77 |
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78 protected static Node getNodeXPath( |
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79 String query, |
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80 Map<String, String> variables |
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81 ) { |
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82 return (Node)XMLUtils.xpath( |
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83 Config.getConfig(), query, XPathConstants.NODE, |
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84 null, variables); |
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85 } |
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86 |
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87 @Override |
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88 public Document processXML( |
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89 Document data, |
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90 GlobalContext globalContext, |
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91 CallMeta callMeta |
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92 ) { |
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93 log.debug("MapInfoService.process"); |
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94 |
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95 Document result = XMLUtils.newDocument(); |
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96 ElementCreator cr = new ElementCreator(result, null, null); |
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97 |
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98 Element mapinfo = cr.create("mapinfo"); |
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99 result.appendChild(mapinfo); |
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100 |
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101 String river = extractRiver(data); |
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102 if (river == null || river.length() == 0) { |
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103 log.warn("Cannot generate information: river is empty!"); |
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104 return result; |
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105 } |
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106 |
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107 String mapType = extractMaptype(data); |
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108 if (mapType == null |
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109 || !(mapType.equals("floodmap") || mapType.equals("rivermap"))) { |
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110 mapType = "floodmap"; |
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111 } |
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112 |
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113 Element root = cr.create("river"); |
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114 cr.addAttr(root, "name", river); |
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115 mapinfo.appendChild(root); |
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116 |
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117 Envelope env = GeometryUtils.getRiverBoundary(river); |
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118 if (env != null) { |
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119 String bounds = GeometryUtils.jtsBoundsToOLBounds(env); |
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120 if (log.isDebugEnabled()) { |
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121 log.debug("River '" + river + "' bounds: " + bounds); |
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122 } |
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123 |
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124 Element bbox = cr.create("bbox"); |
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125 cr.addAttr(bbox, "value", bounds); |
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126 root.appendChild(bbox); |
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127 } |
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128 |
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129 Map<String, String> vars = new HashMap<String, String>(); |
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130 vars.put("maptype", mapType); |
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131 vars.put("river", river); |
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132 |
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133 String sridStr = getStringXPath(XPATH_RIVER_PROJECTION, vars); |
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134 |
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135 if (sridStr != null && sridStr.length() > 0) { |
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136 Element srid = cr.create("srid"); |
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137 cr.addAttr(srid, "value", sridStr); |
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138 root.appendChild(srid); |
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139 } |
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140 |
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141 if (log.isDebugEnabled()) { |
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142 log.debug("processXML: " + XMLUtils.toString(root)); |
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143 } |
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144 |
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145 root.appendChild( |
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146 createWMSElement("background-wms", |
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147 XPATH_RIVER_BACKGROUND, vars, cr)); |
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148 |
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149 root.appendChild( |
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150 createWMSElement("river-wms", |
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151 XPATH_RIVER_WMS, vars, cr)); |
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152 |
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153 return result; |
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154 } |
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155 |
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156 |
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157 protected Element createWMSElement( |
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158 String elementName, |
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159 String xpath, |
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160 Map<String, String> vars, |
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161 ElementCreator cr) |
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162 { |
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163 log.debug("createWMSElement()"); |
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164 |
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165 Element el = cr.create(elementName); |
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166 Element wms = (Element)getNodeXPath(xpath, vars); |
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167 |
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168 if (wms != null) { |
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169 cr.addAttr(el, "url", wms.getAttribute("url")); |
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170 cr.addAttr(el, "layers", wms.getAttribute("layers")); |
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171 |
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172 log.debug("createWMSElement: " + XMLUtils.toString(el)); |
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173 } |
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174 else { |
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175 log.debug("createWMSElement: wms == null"); |
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176 } |
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177 |
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178 return el; |
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179 } |
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180 |
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181 |
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182 private static String extractRiver(Document data) { |
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183 return XMLUtils.xpathString( |
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184 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); |
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185 } |
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186 |
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187 private static String extractMaptype(Document data) { |
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188 return XMLUtils.xpathString( |
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189 data, XPATH_MAPTYPE, ArtifactNamespaceContext.INSTANCE); |
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190 } |
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191 } |
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192 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |