Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/MapfileGenerator.java @ 4798:39885bdfc6fc

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Added calculation of the "Umhuellende" to calculation of "W fuer ungleichwertige Abfluesse". This is done by figuring out the WST columns that imfold the data and then do simple "gleichwertige" calculations from the start of the interval. This is too much because only the Qs are needed for the "Umhuellende".
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 13 Jan 2013 16:18:28 +0100
parents 38ec171544de
children b55975761708
rev   line source
1129
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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1 package de.intevation.flys.utils;
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2
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3 import de.intevation.artifacts.common.utils.Config;
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4 import de.intevation.flys.artifacts.model.LayerInfo;
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5
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6 import java.io.File;
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7 import java.io.FileNotFoundException;
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8 import java.io.FileWriter;
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9 import java.io.FilenameFilter;
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da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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10 import java.io.IOException;
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11 import java.io.Writer;
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12 import java.util.ArrayList;
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13 import java.util.Date;
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14 import java.util.List;
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15
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16 import org.apache.log4j.Logger;
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17 import org.apache.velocity.Template;
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18 import org.apache.velocity.VelocityContext;
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19 import org.apache.velocity.app.VelocityEngine;
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20 import org.apache.velocity.runtime.RuntimeConstants;
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21
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22 /**
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23 * This class iterates over a bunch of directories, searches for meta
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24 * information coresponding to shapefiles and creates a mapfile which is used by
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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25 * a <i>MapServer</i>.
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26 *
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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28 */
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29 public abstract class MapfileGenerator
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30 {
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31 public static final String WSPLGEN_RESULT_SHAPE = "wsplgen.shp";
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32 public static final String WSPLGEN_LINES_SHAPE = "barrier_lines.shp";
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33 public static final String WSPLGEN_POLYGONS_SHAPE = "barrier_polygons.shp";
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34 public static final String WSPLGEN_USER_SHAPE = "user-rgd.shp";
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35
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36 public static final String WSPLGEN_LAYER_TEMPLATE = "wsplgen_layer.vm";
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37 public static final String SHP_LAYER_TEMPLATE = "shapefile_layer.vm";
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49ad801076e4 Enabled the MapGenerator to create WMS layers with database datastore - riveraxis is the first layer that is no longer fetched from static WMS service but from user specific one.
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38 public static final String DB_LAYER_TEMPLATE = "db_layer.vm";
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39 public static final String RIVERAXIS_LAYER_TEMPLATE = "riveraxis-layer.vm";
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40
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41 public static final String MS_WSPLGEN_PREFIX = "wsplgen-";
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42 public static final String MS_BARRIERS_PREFIX = "barriers-";
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43 public static final String MS_LINE_PREFIX = "lines-";
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44 public static final String MS_POLYGONS_PREFIX = "polygons-";
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45 public static final String MS_LAYER_PREFIX = "ms_layer-";
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46 public static final String MS_USERSHAPE_PREFIX = "user-";
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47
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48 private static Logger logger = Logger.getLogger(MapfileGenerator.class);
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49
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50 private File shapefileDirectory;
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51
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52 private VelocityEngine velocityEngine;
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53
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54
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55 protected MapfileGenerator() {
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56 }
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57
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58
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59 /**
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60 * Method to check the existance of a template file.
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61 *
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62 * @param templateID The name of a template.
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63 * @return true, of the template exists - otherwise false.
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64 */
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65 public boolean templateExists(String templateID){
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66 Template template = getTemplateByName(templateID);
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67 return template != null;
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68 }
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69
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70
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71 public abstract void generate() throws Exception;
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72
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73
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74 /**
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75 * Returns the VelocityEngine used for the template mechanism.
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76 *
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77 * @return the velocity engine.
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78 */
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79 protected VelocityEngine getVelocityEngine() {
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80 if (velocityEngine == null) {
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81 velocityEngine = new VelocityEngine();
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82 try {
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83 setupVelocity(velocityEngine);
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84 }
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85 catch (Exception e) {
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86 logger.error(e, e);
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87 return null;
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88 }
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89 }
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90 return velocityEngine;
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91 }
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92
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93
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94 /**
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95 * Initialize velocity.
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96 *
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97 * @param engine Velocity engine.
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98 * @throws Exception if an error occured while initializing velocity.
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99 */
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100 protected void setupVelocity(VelocityEngine engine)
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101 throws Exception
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102 {
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103 engine.setProperty(
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104 "input.encoding",
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105 "UTF-8");
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106
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107 engine.setProperty(
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108 RuntimeConstants.RUNTIME_LOG,
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109 getVelocityLogfile());
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110
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111 engine.setProperty(
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112 "resource.loader",
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113 "file");
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114
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115 engine.setProperty(
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116 "file.resource.loader.path",
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117 getMapserverTemplatePath());
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118
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119 engine.init();
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120 }
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121
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122 protected abstract String getVelocityLogfile();
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123
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124 protected abstract String getMapserverTemplatePath();
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125
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126 protected abstract String getMapserverUrl();
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127
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128 protected VelocityContext getVelocityContext() {
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129 VelocityContext context = new VelocityContext();
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130
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131 try {
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132 context.put("MAPSERVERURL",
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133 getMapserverUrl());
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134 context.put("SHAPEFILEPATH",
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135 getShapefileBaseDir().getCanonicalPath());
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136 context.put("CONFIGDIR",
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137 Config.getConfigDirectory().getCanonicalPath());
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138 }
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139 catch (FileNotFoundException fnfe) {
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140 // this is bad
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141 logger.warn(fnfe, fnfe);
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142 }
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143 catch (IOException ioe) {
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144 // this is also bad
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145 logger.warn(ioe, ioe);
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146 }
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147
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148 return context;
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149 }
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150
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151
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152 /**
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153 * Returns a template specified by <i>model</i>.
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154 *
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155 * @param model The name of the template.
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156 * @return a template.
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157 */
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158 protected Template getTemplateByName(String model) {
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159 if (model.indexOf(".vm") < 0) {
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160 model = model.concat(".vm");
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161 }
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162
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163 try {
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164 VelocityEngine engine = getVelocityEngine();
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165 if (engine == null) {
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166 logger.error("Error while fetching VelocityEngine.");
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167 return null;
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168 }
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169
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170 return engine.getTemplate(model);
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171 }
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172 catch (Exception e) {
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173 logger.warn(e, e);
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174 }
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175
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176 return null;
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177 }
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178
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179
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180 /**
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181 * Returns the mapfile template.
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182 *
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183 * @return the mapfile template.
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184 * @throws Exception if an error occured while reading the configuration.
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185 */
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186 protected Template getMapfileTemplateObj()
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187 throws Exception
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188 {
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189 String mapfileName = getMapfileTemplate();
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190 return getTemplateByName(mapfileName);
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191 }
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192
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193 protected abstract String getMapfilePath();
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194
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195 protected abstract String getMapfileTemplate();
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196
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197
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198 /**
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199 * Returns the base directory storing the shapefiles.
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200 *
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201 * @return the shapefile base directory.
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202 *
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203 * @throws FileNotFoundException if no shapefile path is found or
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204 * configured.
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205 */
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206 public File getShapefileBaseDir()
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207 throws FileNotFoundException, IOException
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208 {
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209 if (shapefileDirectory == null) {
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210 String path = FLYSUtils.getXPathString(
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211 FLYSUtils.XPATH_FLOODMAP_SHAPEFILE_DIR);
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212
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213 if (path != null) {
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214 shapefileDirectory = new File(path);
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215 }
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216
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217 if (shapefileDirectory == null) {
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218 throw new FileNotFoundException("No shapefile directory given");
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219 }
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220
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221 if (!shapefileDirectory.exists()) {
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222 shapefileDirectory.mkdirs();
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223 }
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224 }
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225
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226 return shapefileDirectory;
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227 }
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228
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229
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230 protected File[] getUserDirs()
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231 throws FileNotFoundException, IOException
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232 {
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233 File baseDir = getShapefileBaseDir();
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234 File[] artifactDirs = baseDir.listFiles();
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235
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236 // TODO ONLY RETURN DIRECTORIES OF THE SPECIFIED USER
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237
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238 return artifactDirs;
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239 }
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240
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241
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242
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243 protected List<String> parseLayers(File[] dirs) {
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244 List<String> layers = new ArrayList<String>();
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245
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246 for (File dir: dirs) {
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247 File[] layerFiles = dir.listFiles(new FilenameFilter() {
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248 @Override
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249 public boolean accept(File directory, String name) {
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250 return name.startsWith(MS_LAYER_PREFIX);
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251 }
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252 });
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253
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254 for (File layer: layerFiles) {
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255 try {
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256 layers.add(layer.getCanonicalPath());
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257 }
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258 catch (IOException ioe) {
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259 logger.warn(ioe, ioe);
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260 }
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261 }
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262 }
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263
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264 return layers;
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265 }
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266
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267
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268
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269
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270 /**
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271 * Creates a layer snippet which might be included in the mapfile.
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272 *
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273 * @param layerinfo A LayerInfo object that contains all necessary
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274 * information to build a Mapserver LAYER section.
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275 * @param dir The base dir for the LAYER snippet.
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276 * @param filename The name of the file that is written.
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277 * @param tpl The Velocity template which is used to create the LAYER
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278 * section.
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279 */
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280 protected void writeLayer(
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281 LayerInfo layerInfo,
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282 File layerFile,
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283 Template tpl
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284 )
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285 throws FileNotFoundException
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286 {
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287 if (logger.isDebugEnabled()) {
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288 logger.debug("Write layer for:");
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289 logger.debug(" directory/file: " + layerFile.getName());
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290 }
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291
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292 Writer writer = null;
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293
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294 try {
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295 writer = new FileWriter(layerFile);
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296
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297 VelocityContext context = getVelocityContext();
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298 context.put("LAYER", layerInfo);
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299
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300 tpl.merge(context, writer);
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301 }
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302 catch (FileNotFoundException fnfe) {
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303 logger.error(fnfe, fnfe);
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304 }
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305 catch (IOException ioe) {
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306 logger.error(ioe, ioe);
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307 }
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308 catch (Exception e) {
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309 logger.error(e, e);
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310 }
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311 finally {
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312 try {
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313 if (writer != null) {
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314 writer.close();
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315 }
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316 }
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317 catch (IOException ioe) {
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318 logger.debug(ioe, ioe);
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319 }
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320 }
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321 }
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322
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323
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324 /**
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325 * Creates a mapfile with the layer information stored in <i>layers</i>.
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326 *
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327 * @param layers Layer information.
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328 */
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329 protected void writeMapfile(List<String> layers) {
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330 String tmpMapName = "mapfile" + new Date().getTime();
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331
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332 File mapfile = new File(getMapfilePath());
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333
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334 File tmp = null;
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335 Writer writer = null;
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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336
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337 try {
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338 tmp = new File(mapfile.getParent(), tmpMapName);
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339 tmp.createNewFile();
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340
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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341 writer = new FileWriter(tmp);
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342
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49ad801076e4 Enabled the MapGenerator to create WMS layers with database datastore - riveraxis is the first layer that is no longer fetched from static WMS service but from user specific one.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1781
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343 VelocityContext context = getVelocityContext();
1781
ef2300b450bf Modified the process to create mapfiles.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1775
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344 context.put("LAYERS", layers);
1129
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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345
4656
442fbb290fa8 Introduce river mapfile generation (WARNING: Changes in config xml files required!).
Christian Lins <christian.lins@intevation.de>
parents: 4654
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346 Template mapTemplate = getMapfileTemplateObj();
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da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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347 if (mapTemplate == null) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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348 logger.warn("No mapfile template found.");
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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349 return;
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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350 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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351
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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352 mapTemplate.merge(context, writer);
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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353
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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354 // we need to create a temporary mapfile first und rename it into
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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355 // real mapfile because we don't run into race conditions on this
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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356 // way. (iw)
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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357 tmp.renameTo(mapfile);
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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358 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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359 catch (FileNotFoundException fnfe) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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360 logger.error(fnfe, fnfe);
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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361 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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362 catch (IOException ioe) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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363 logger.error(ioe, ioe);
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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364 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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365 catch (Exception e) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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366 logger.error(e, e);
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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367 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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368 finally {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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369 try {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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370 if (writer != null) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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371 writer.close();
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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372 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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373
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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374 if (tmp.exists()) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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375 tmp.delete();
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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376 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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377 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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378 catch (IOException ioe) {
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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379 logger.debug(ioe, ioe);
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
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380 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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381 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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382 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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383 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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384 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org