Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/utils/MapfileGenerator.java @ 8755:30b1ddadf275

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(issue1801) Unify reference gauge finding code The basic way as described in the method comment of the determineRefGauge method is now used in the WINFOArtifact, MainValuesService and RiverUtils.getGauge method. RiverUtils.getGauge previously just returned the first gauge found. While this is now a behavior change I believe that it is always more correct then the undeterministic behavior of the previous implmenentation.
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 24 Jun 2015 14:07:26 +0200
parents e9d912c97fa8
children 0a5239a1e46e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.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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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
1775
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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()) {
3306
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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
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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246 return artifactDirs;
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247 }
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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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 });
1129
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261
7655
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
Andre Heinecke <aheinecke@intevation.de>
parents: 5994
diff changeset
262 if (layerFiles == null) {
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
Andre Heinecke <aheinecke@intevation.de>
parents: 5994
diff changeset
263 continue;
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
Andre Heinecke <aheinecke@intevation.de>
parents: 5994
diff changeset
264 }
81ae2a4873f2 Do not NPE if there is a folder without mapfiles in the shapefile path
Andre Heinecke <aheinecke@intevation.de>
parents: 5994
diff changeset
265
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266 for (File layer: layerFiles) {
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parents: 1775
diff changeset
267 try {
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diff changeset
268 layers.add(layer.getCanonicalPath());
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diff changeset
269 }
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diff changeset
270 catch (IOException ioe) {
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parents: 7655
diff changeset
271 log.warn(ioe, ioe);
1134
bcf70a452646 Read barrier layers from filesystem while mapfile creation and build a facet for this layer in the artifact.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1129
diff changeset
272 }
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273 }
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parents:
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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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parents:
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278
da3c3e286c88 Introduced a MapfileGenerator that creates Mapserver specific mapfiles based on WSPLGEN results read from filesystem.
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279
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.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1781
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280
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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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.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1781
diff changeset
282 /**
1781
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parents: 1775
diff changeset
283 * Creates a layer snippet which might be included in the mapfile.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1775
diff changeset
284 *
8747
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Tom Gottfried <tom@intevation.de>
parents: 8202
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285 * @param layerInfo A LayerInfo object that contains all necessary
1781
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parents: 1775
diff changeset
286 * information to build a Mapserver LAYER section.
8747
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Tom Gottfried <tom@intevation.de>
parents: 8202
diff changeset
287 * @param layerFile The file that is written.
1781
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288 * @param tpl The Velocity template which is used to create the LAYER
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289 * section.
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diff changeset
290 */
5309
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Raimund Renkert <rrenkert@intevation.de>
parents: 4703
diff changeset
291 public void writeLayer(
4656
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Christian Lins <christian.lins@intevation.de>
parents: 4654
diff changeset
292 LayerInfo layerInfo,
442fbb290fa8 Introduce river mapfile generation (WARNING: Changes in config xml files required!).
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diff changeset
293 File layerFile,
1775
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diff changeset
294 Template tpl
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
295 )
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
296 throws FileNotFoundException
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
297 {
8202
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diff changeset
298 if (log.isDebugEnabled()) {
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parents: 7655
diff changeset
299 log.debug("Write layer for:");
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parents: 7655
diff changeset
300 log.debug(" directory/file: " + layerFile.getName());
1775
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
301 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
302
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
303 Writer 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
304
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
305 try {
4656
442fbb290fa8 Introduce river mapfile generation (WARNING: Changes in config xml files required!).
Christian Lins <christian.lins@intevation.de>
parents: 4654
diff changeset
306 writer = new FileWriter(layerFile);
1775
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
307
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.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1781
diff changeset
308 VelocityContext context = getVelocityContext();
4656
442fbb290fa8 Introduce river mapfile generation (WARNING: Changes in config xml files required!).
Christian Lins <christian.lins@intevation.de>
parents: 4654
diff changeset
309 context.put("LAYER", layerInfo);
1775
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
310
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
311 tpl.merge(context, writer);
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
312 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
313 catch (FileNotFoundException fnfe) {
8202
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parents: 7655
diff changeset
314 log.error(fnfe, fnfe);
1775
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
315 }
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
316 catch (IOException ioe) {
8202
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parents: 7655
diff changeset
317 log.error(ioe, ioe);
1775
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
318 }
0156105222c9 Improved the MapfileGenerator. It offers methods to create barrier and wsplgen layer files for mapserver.
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parents: 1710
diff changeset
319 catch (Exception e) {
8202
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parents: 7655
diff changeset
320 log.error(e, e);
1775
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
321 }
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
322 finally {
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
323 try {
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
324 if (writer != null) {
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
325 writer.close();
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
326 }
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
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 catch (IOException ioe) {
8202
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 7655
diff changeset
329 log.debug(ioe, ioe);
1775
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
330 }
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
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
1129
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
335 /**
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
336 * 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.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
337 *
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
338 * @param layers Layer information.
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 */
5309
b55975761708 Changed visiblitiy of some methods. TODO: A lot of refactoring.
Raimund Renkert <rrenkert@intevation.de>
parents: 4703
diff changeset
340 public void writeMapfile(List<String> layers) {
1129
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
341 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
342
4656
442fbb290fa8 Introduce river mapfile generation (WARNING: Changes in config xml files required!).
Christian Lins <christian.lins@intevation.de>
parents: 4654
diff changeset
343 File mapfile = new File(getMapfilePath());
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344
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345 File tmp = null;
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346 Writer writer = null;
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347
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348 try {
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349 tmp = new File(mapfile.getParent(), tmpMapName);
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350 tmp.createNewFile();
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351
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352 writer = new FileWriter(tmp);
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353
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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354 VelocityContext context = getVelocityContext();
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355 context.put("LAYERS", layers);
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356
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357 Template mapTemplate = getMapfileTemplateObj();
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358 if (mapTemplate == null) {
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359 log.warn("No mapfile template found.");
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360 return;
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361 }
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362
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363 mapTemplate.merge(context, writer);
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364
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365 // we need to create a temporary mapfile first und rename it into
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366 // real mapfile because we don't run into race conditions on this
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367 // way. (iw)
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368 tmp.renameTo(mapfile);
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369 }
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370 catch (FileNotFoundException fnfe) {
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371 log.error(fnfe, fnfe);
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372 }
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373 catch (IOException ioe) {
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374 log.error(ioe, ioe);
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375 }
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376 catch (Exception e) {
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377 log.error(e, e);
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378 }
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379 finally {
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380 try {
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381 if (writer != null) {
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382 writer.close();
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383 }
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384
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385 if (tmp.exists()) {
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386 tmp.delete();
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387 }
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388 }
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389 catch (IOException ioe) {
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390 log.debug(ioe, ioe);
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391 }
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392 }
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393 }
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394 }
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395 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org