annotate artifacts/src/main/java/org/dive4elements/river/utils/MapfileGenerator.java @ 8587:07c9ac22f611

(issue1755) Generalise BedQuality result handling The bedquality calculation now produces a result for each time period which has BedQualityResultValues for each specific result type. Formally this was split up in density, porosity and diameter classes with some bedload diameter classes mixed in for extra fun. The intent of this commit is to allow more shared code and generic access patterns to the BedQuality results.
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 18 Mar 2015 18:42:08 +0100
parents e4606eae8ea5
children e9d912c97fa8
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.utils;
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10
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11 import org.dive4elements.artifacts.common.utils.Config;
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12 import org.dive4elements.river.artifacts.model.LayerInfo;
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13
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14 import java.io.File;
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15 import java.io.FileNotFoundException;
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16 import java.io.FileWriter;
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17 import java.io.FilenameFilter;
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18 import java.io.IOException;
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19 import java.io.Writer;
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20 import java.util.ArrayList;
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21 import java.util.Date;
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22 import java.util.List;
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23
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24 import org.apache.log4j.Logger;
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25 import org.apache.velocity.Template;
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26 import org.apache.velocity.VelocityContext;
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27 import org.apache.velocity.app.VelocityEngine;
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28 import org.apache.velocity.runtime.RuntimeConstants;
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29
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30 /**
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31 * This class iterates over a bunch of directories, searches for meta
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32 * information coresponding to shapefiles and creates a mapfile which is used by
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33 * a <i>MapServer</i>.
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34 *
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35 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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36 */
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37 public abstract class MapfileGenerator
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38 {
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39 public static final String WSPLGEN_RESULT_SHAPE = "wsplgen.shp";
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40 public static final String WSPLGEN_LINES_SHAPE = "barrier_lines.shp";
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41 public static final String WSPLGEN_POLYGONS_SHAPE = "barrier_polygons.shp";
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42 public static final String WSPLGEN_USER_SHAPE = "user-rgd.shp";
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43
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44 public static final String WSPLGEN_LAYER_TEMPLATE = "wsplgen_layer.vm";
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45 public static final String SHP_LAYER_TEMPLATE = "shapefile_layer.vm";
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46 public static final String DB_LAYER_TEMPLATE = "db_layer.vm";
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47 public static final String RIVERAXIS_LAYER_TEMPLATE = "riveraxis-layer.vm";
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48
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49 public static final String MS_WSPLGEN_PREFIX = "wsplgen-";
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50 public static final String MS_BARRIERS_PREFIX = "barriers-";
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51 public static final String MS_LINE_PREFIX = "lines-";
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52 public static final String MS_POLYGONS_PREFIX = "polygons-";
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53 public static final String MS_LAYER_PREFIX = "ms_layer-";
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54 public static final String MS_USERSHAPE_PREFIX = "user-";
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55
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56 private static Logger log = Logger.getLogger(MapfileGenerator.class);
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57
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58 private File shapefileDirectory;
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59
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60 private VelocityEngine velocityEngine;
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61
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62
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63 protected MapfileGenerator() {
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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 * Method to check the existance of a template file.
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69 *
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70 * @param templateID The name of a template.
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71 * @return true, of the template exists - otherwise false.
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72 */
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73 public boolean templateExists(String templateID){
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74 Template template = getTemplateByName(templateID);
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75 return template != null;
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76 }
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77
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78
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79 public abstract void generate() throws Exception;
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80
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81
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82 /**
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83 * Returns the VelocityEngine used for the template mechanism.
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84 *
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85 * @return the velocity engine.
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86 */
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87 protected VelocityEngine getVelocityEngine() {
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88 if (velocityEngine == null) {
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89 velocityEngine = new VelocityEngine();
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90 try {
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91 setupVelocity(velocityEngine);
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92 }
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93 catch (Exception e) {
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94 log.error(e, e);
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95 return null;
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96 }
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97 }
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98 return velocityEngine;
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99 }
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102 /**
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103 * Initialize velocity.
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104 *
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105 * @param engine Velocity engine.
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106 * @throws Exception if an error occured while initializing velocity.
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107 */
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108 protected void setupVelocity(VelocityEngine engine)
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109 throws Exception
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110 {
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111 engine.setProperty(
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112 "input.encoding",
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113 "UTF-8");
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114
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115 engine.setProperty(
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116 RuntimeConstants.RUNTIME_LOG,
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117 getVelocityLogfile());
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118
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119 engine.setProperty(
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120 "resource.loader",
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121 "file");
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122
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123 engine.setProperty(
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124 "file.resource.loader.path",
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125 getMapserverTemplatePath());
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126
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127 engine.init();
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128 }
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129
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130 protected abstract String getVelocityLogfile();
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131
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132 protected abstract String getMapserverTemplatePath();
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133
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134 public abstract String getMapserverUrl();
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135
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136 protected VelocityContext getVelocityContext() {
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137 VelocityContext context = new VelocityContext();
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138
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139 try {
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140 context.put("MAPSERVERURL",
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141 getMapserverUrl());
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142 context.put("SHAPEFILEPATH",
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143 getShapefileBaseDir().getCanonicalPath());
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144 context.put("CONFIGDIR",
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145 Config.getConfigDirectory().getCanonicalPath());
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146 }
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147 catch (FileNotFoundException fnfe) {
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148 // this is bad
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149 log.warn(fnfe, fnfe);
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150 }
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151 catch (IOException ioe) {
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152 // this is also bad
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153 log.warn(ioe, ioe);
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154 }
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155
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156 return context;
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157 }
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158
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159
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160 /**
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161 * Returns a template specified by <i>model</i>.
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162 *
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163 * @param model The name of the template.
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164 * @return a template.
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165 */
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166 public Template getTemplateByName(String model) {
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167 if (model.indexOf(".vm") < 0) {
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168 model = model.concat(".vm");
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169 }
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170
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171 try {
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172 VelocityEngine engine = getVelocityEngine();
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173 if (engine == null) {
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174 log.error("Error while fetching VelocityEngine.");
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175 return null;
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176 }
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177
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178 return engine.getTemplate(model);
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179 }
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180 catch (Exception e) {
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181 log.warn(e, e);
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182 }
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183
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184 return null;
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185 }
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186
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187
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188 /**
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189 * Returns the mapfile template.
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190 *
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191 * @return the mapfile template.
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192 * @throws Exception if an error occured while reading the configuration.
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193 */
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194 protected Template getMapfileTemplateObj()
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195 throws Exception
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196 {
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197 String mapfileName = getMapfileTemplate();
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198 return getTemplateByName(mapfileName);
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199 }
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200
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201 protected abstract String getMapfilePath();
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202
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203 protected abstract String getMapfileTemplate();
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204
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205
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206 /**
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207 * Returns the base directory storing the shapefiles.
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208 *
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209 * @return the shapefile base directory.
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210 *
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211 * @throws FileNotFoundException if no shapefile path is found or
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212 * configured.
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213 */
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214 public File getShapefileBaseDir()
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215 throws FileNotFoundException, IOException
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216 {
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217 if (shapefileDirectory == null) {
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218 String path = RiverUtils.getXPathString(
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219 RiverUtils.XPATH_FLOODMAP_SHAPEFILE_DIR);
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220
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221 if (path != null) {
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222 shapefileDirectory = new File(path);
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223 }
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224
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225 if (shapefileDirectory == null) {
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226 throw new FileNotFoundException("No shapefile directory given");
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227 }
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228
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229 if (!shapefileDirectory.exists()) {
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230 shapefileDirectory.mkdirs();
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231 }
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232 }
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233
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234 return shapefileDirectory;
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235 }
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236
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237
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238 protected File[] getUserDirs()
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239 throws FileNotFoundException, IOException
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240 {
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241 File baseDir = getShapefileBaseDir();
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242 File[] artifactDirs = baseDir.listFiles();
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243
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244 // TODO ONLY RETURN DIRECTORIES OF THE SPECIFIED USER
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245
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246 return artifactDirs;
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247 }
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248
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249
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250
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251 protected List<String> parseLayers(File[] dirs) {
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252 List<String> layers = new ArrayList<String>();
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253
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254 for (File dir: dirs) {
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255 File[] layerFiles = dir.listFiles(new FilenameFilter() {
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256 @Override
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257 public boolean accept(File directory, String name) {
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258 return name.startsWith(MS_LAYER_PREFIX);
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259 }
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260 });
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261
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262 if (layerFiles == null) {
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
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263 continue;
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
Andre Heinecke <aheinecke@intevation.de>
parents: 5994
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264 }
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
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265
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266 for (File layer: layerFiles) {
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267 try {
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268 layers.add(layer.getCanonicalPath());
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269 }
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270 catch (IOException ioe) {
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271 log.warn(ioe, ioe);
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272 }
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273 }
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274 }
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275
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276 return layers;
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277 }
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278
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279
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280
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281
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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282 /**
1781
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283 * Creates a layer snippet which might be included in the mapfile.
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284 *
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285 * @param layerinfo A LayerInfo object that contains all necessary
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286 * information to build a Mapserver LAYER section.
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287 * @param dir The base dir for the LAYER snippet.
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288 * @param filename The name of the file that is written.
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289 * @param tpl The Velocity template which is used to create the LAYER
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290 * section.
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291 */
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292 public void writeLayer(
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293 LayerInfo layerInfo,
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294 File layerFile,
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295 Template tpl
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296 )
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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297 throws FileNotFoundException
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298 {
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299 if (log.isDebugEnabled()) {
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300 log.debug("Write layer for:");
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301 log.debug(" directory/file: " + layerFile.getName());
1775
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302 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
303
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
304 Writer writer = null;
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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305
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
306 try {
4656
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parents: 4654
diff changeset
307 writer = new FileWriter(layerFile);
1775
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
308
1792
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parents: 1781
diff changeset
309 VelocityContext context = getVelocityContext();
4656
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diff changeset
310 context.put("LAYER", layerInfo);
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311
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
312 tpl.merge(context, writer);
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diff changeset
313 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
314 catch (FileNotFoundException fnfe) {
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315 log.error(fnfe, fnfe);
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316 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
317 catch (IOException ioe) {
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318 log.error(ioe, ioe);
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diff changeset
319 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
320 catch (Exception e) {
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diff changeset
321 log.error(e, e);
1775
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
322 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
323 finally {
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
324 try {
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
325 if (writer != null) {
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
326 writer.close();
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
327 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1710
diff changeset
328 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1710
diff changeset
329 catch (IOException ioe) {
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diff changeset
330 log.debug(ioe, ioe);
1775
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parents: 1710
diff changeset
331 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1710
diff changeset
332 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1710
diff changeset
333 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1710
diff changeset
334
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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diff changeset
335
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parents:
diff changeset
336 /**
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
diff changeset
337 * Creates a mapfile with the layer information stored in <i>layers</i>.
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
diff changeset
338 *
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
339 * @param layers Layer information.
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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parents:
diff changeset
340 */
5309
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Raimund Renkert <rrenkert@intevation.de>
parents: 4703
diff changeset
341 public void writeMapfile(List<String> layers) {
1129
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parents:
diff changeset
342 String tmpMapName = "mapfile" + new Date().getTime();
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
343
4656
442fbb290fa8 Introduce river mapfile generation (WARNING: Changes in config xml files required!).
Christian Lins <christian.lins@intevation.de>
parents: 4654
diff changeset
344 File mapfile = new File(getMapfilePath());
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345
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346 File tmp = null;
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347 Writer writer = null;
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348
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349 try {
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350 tmp = new File(mapfile.getParent(), tmpMapName);
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351 tmp.createNewFile();
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352
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353 writer = new FileWriter(tmp);
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354
1792
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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355 VelocityContext context = getVelocityContext();
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356 context.put("LAYERS", layers);
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357
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358 Template mapTemplate = getMapfileTemplateObj();
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359 if (mapTemplate == null) {
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360 log.warn("No mapfile template found.");
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361 return;
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362 }
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363
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364 mapTemplate.merge(context, writer);
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365
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366 // we need to create a temporary mapfile first und rename it into
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367 // real mapfile because we don't run into race conditions on this
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368 // way. (iw)
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369 tmp.renameTo(mapfile);
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370 }
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371 catch (FileNotFoundException fnfe) {
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372 log.error(fnfe, fnfe);
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373 }
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374 catch (IOException ioe) {
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375 log.error(ioe, ioe);
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376 }
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377 catch (Exception e) {
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378 log.error(e, e);
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379 }
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380 finally {
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381 try {
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382 if (writer != null) {
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383 writer.close();
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384 }
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385
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386 if (tmp.exists()) {
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387 tmp.delete();
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388 }
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389 }
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390 catch (IOException ioe) {
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391 log.debug(ioe, ioe);
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392 }
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393 }
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394 }
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395 }
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396 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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