Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/FLYSUtils.java @ 1165:3b034bb5fce7

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Add status message for queued WSPLGEN jobs to notify users. flys-artifacts/trunk@2705 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 12 Sep 2011 13:03:27 +0000
parents 5f53b443d67c
children f58be0d661b9
rev   line source
1095
f465785ed1ae Refactored the code to fetch the km range/locations into a utility class.
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parents:
diff changeset
1 package de.intevation.flys.utils;
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2
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5f53b443d67c Implement getArtifact(uuid,context) in FLYSUtils.
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3 import org.apache.log4j.Logger;
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4
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5 import java.util.HashMap;
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6 import java.util.Map;
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7
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8 import javax.xml.xpath.XPathConstants;
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9
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10 import org.w3c.dom.Document;
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11
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12 import gnu.trove.TDoubleArrayList;
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13
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14 import de.intevation.artifacts.CallContext;
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15
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16 import de.intevation.artifacts.common.utils.Config;
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17 import de.intevation.artifacts.common.utils.XMLUtils;
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18
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19 import de.intevation.flys.artifacts.FLYSArtifact;
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20 import de.intevation.flys.artifacts.model.RiverFactory;
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21 import de.intevation.flys.model.River;
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22
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23 public class FLYSUtils {
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24
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25 /** The logger that is used in this utility. */
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26 private static Logger logger = Logger.getLogger(FLYSUtils.class);
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27
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28 public static enum KM_MODE { RANGE, LOCATIONS, NONE };
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29
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30 public static final String XPATH_RIVER_PROJECTION =
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31 "/artifact-database/floodmap/river[@name=$name]/srid/@value";
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32
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33 public static final String XPATH_SHAPEFILE_DIR =
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34 "/artifact-database/floodmap/shapefile-path/@value";
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35
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36 public static final String XPATH_VELOCITY_LOGFILE =
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37 "/artifact-database/floodmap/velocity/logfile/@path";
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38
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39 public static final String XPATH_MAPSERVER_URL =
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40 "/artifact-database/floodmap/mapserver/server/@path";
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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41
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42 public static final String XPATH_MAPFILE_PATH =
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43 "/artifact-database/floodmap/mapserver/mapfile/@path";
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44
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45 public static final String XPATH_MAPFILE_TEMPLATE =
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46 "/artifact-database/floodmap/mapserver/map-template/@path";
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47
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48 public static final String XPATH_MAPSERVER_TEMPLATE_PATH =
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49 "/artifact-database/floodmap/mapserver/templates/@path";
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50
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51
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52 private FLYSUtils() {
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53 }
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54
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55
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56 public static FLYSArtifact getArtifact(String uuid, CallContext context) {
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57 try {
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58 return (FLYSArtifact) context.getDatabase().getRawArtifact(uuid);
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59 }
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60 // TODO: catch more selective
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61 catch (Exception e) {
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62 logger.error("Cannot get FLYSArtifact " + uuid + " from database (" + e.getMessage() + ").");
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63 return null;
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64 }
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65 }
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66
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67
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68 /**
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69 * Convinience function to retrieve an XPath as string with replaced config
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70 * directory.
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71 *
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72 * @param xpath The XPath expression.
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73 *
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74 * @return a string with replaced config directory.
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75 */
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76 public static String getXPathString(String xpath) {
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77 String tmp = Config.getStringXPath(xpath);
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78 tmp = Config.replaceConfigDir(tmp);
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79
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80 return tmp;
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81 }
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82
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83
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84 public static KM_MODE getKmRangeMode(FLYSArtifact flys) {
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85 String mode = flys.getDataAsString("ld_mode");
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86
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87 if (mode == null || mode.length() == 0) {
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88 return KM_MODE.NONE;
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89 }
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90 else if (mode.equals("distance")) {
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91 return KM_MODE.RANGE;
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92 }
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93 else if (mode.equals("locations")) {
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94 return KM_MODE.LOCATIONS;
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95 }
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96 else {
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97 return KM_MODE.NONE;
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98 }
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99 }
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100
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101
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102 public static double[] getKmRange(FLYSArtifact flys) {
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103 switch (getKmRangeMode(flys)) {
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104 case RANGE: {
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105 return getKmFromTo(flys);
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106 }
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107
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108 case LOCATIONS: {
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109 double[] locs = getLocations(flys);
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110 return new double[] { locs[0], locs[locs.length-1] };
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111 }
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112
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113 case NONE: {
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114 double[] locs = getLocations(flys);
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115 if (locs != null) {
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116 return new double[] { locs[0], locs[locs.length-1] };
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117 }
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118 else {
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119 return getKmFromTo(flys);
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120 }
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121 }
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122 }
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123
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124 return new double[] { Double.NaN, Double.NaN };
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125 }
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126
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127
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128 public static double[] getKmFromTo(FLYSArtifact flys) {
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129 String strFrom = flys.getDataAsString("ld_from");
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130 String strTo = flys.getDataAsString("ld_to");
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131
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132 if (strFrom == null || strTo == null) {
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133 return null;
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134 }
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135
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136 try {
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137 return new double[] {
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138 Double.parseDouble(strFrom),
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139 Double.parseDouble(strTo) };
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140 }
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141 catch (NumberFormatException nfe) {
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142 return null;
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143 }
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144 }
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145
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146
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147 public static double[] getLocations(FLYSArtifact flys) {
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148 String locationStr = flys.getDataAsString("ld_locations");
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149
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150 if (locationStr == null || locationStr.length() == 0) {
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151 return null;
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152 }
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153
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154 String[] tmp = locationStr.split(" ");
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155 TDoubleArrayList locations = new TDoubleArrayList();
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156
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157 for (String l: tmp) {
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158 try {
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159 locations.add(Double.parseDouble(l));
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160 }
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161 catch (NumberFormatException nfe) {
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162 }
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163 }
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164
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165 locations.sort();
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166
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167 return locations.toNativeArray();
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168 }
1099
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169
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170
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171 /**
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172 * Returns the selected River object based on the 'river' data that might
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173 * have been inserted by the user.
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174 *
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175 * @return the selected River or null if no river has been chosen yet.
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176 */
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177 public static River getRiver(FLYSArtifact flys) {
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178 String sRiver = flys.getDataAsString("river");
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179
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180 return (sRiver != null)
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181 ? RiverFactory.getRiver(sRiver)
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182 : null;
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183 }
1105
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184
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185
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186 /**
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187 * Extracts the SRID defined in the global configuration for the river
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188 * specified in <i>artifact</i>.
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189 *
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190 * @param artifact The FLYSArtifact that stores the name of the river.
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191 *
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192 * @return the SRID as string (e.g. "31466").
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193 */
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194 public static String getRiverSrid(FLYSArtifact artifact) {
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195 String river = artifact.getDataAsString("river");
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196
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197 if (river == null || river.length() == 0) {
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198 return null;
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199 }
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200
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201 Map<String, String> variables = new HashMap<String, String>(1);
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202 variables.put("name", river);
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203
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204 Document cfg = Config.getConfig();
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205
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206 return (String) XMLUtils.xpath(
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207 cfg,
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208 XPATH_RIVER_PROJECTION,
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209 XPathConstants.STRING,
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210 null,
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211 variables);
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212 }
1095
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213 }
1105
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214 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org