annotate src/java/de/intevation/mxd/writer/MapScriptWriter.java @ 62:e468cf8701ea

Prepared the converter to handle and write line symbols.
author Raimund Renkert <rrenkert@intevation.de>
date Tue, 24 May 2011 14:16:25 +0200
parents ef1ee8e752b2
children 7d4cf2db43f1
rev   line source
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1 package de.intevation.mxd.writer;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import org.w3c.dom.Document;
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6 import org.w3c.dom.Element;
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7 import org.w3c.dom.NodeList;
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8
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9 import javax.xml.xpath.XPathConstants;
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10 import java.awt.Color;
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11
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12 import edu.umn.gis.mapscript.mapObj;
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13 import edu.umn.gis.mapscript.layerObj;
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14 import edu.umn.gis.mapscript.classObj;
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15 import edu.umn.gis.mapscript.styleObj;
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16 import edu.umn.gis.mapscript.colorObj;
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17 import edu.umn.gis.mapscript.symbolObj;
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18 import edu.umn.gis.mapscript.symbolSetObj;
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19 import edu.umn.gis.mapscript.lineObj;
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20 import edu.umn.gis.mapscript.pointObj;
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21
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22 import edu.umn.gis.mapscript.MS_UNITS;
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23 import edu.umn.gis.mapscript.MS_LAYER_TYPE;
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24 import edu.umn.gis.mapscript.MS_SYMBOL_TYPE;
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25
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26 import de.intevation.mxd.utils.XMLUtils;
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27
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28 /**
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29 * The Mapfile Writer.
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30 * This Writer uses the MapScript Java API to create Mapfiles from a DOM.
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31 *
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32 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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33 */
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34 public class MapScriptWriter
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35 implements IWriter
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36 {
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37 /**
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38 * The Logger.
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39 */
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40 private static final Logger logger = Logger.getLogger(MapScriptWriter.class);
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41
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42 /**
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43 * Private member.
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44 */
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45 private Document root;
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46 private mapObj map;
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47 private String mapFilename;
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48
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49 public MapScriptWriter() {
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50 map = new mapObj("");
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51 mapFilename = "";
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52 }
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53
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54 public MapScriptWriter(String templ, String filename) {
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55 map = new mapObj(templ);
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56 mapFilename = filename;
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57 }
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58
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59 /**
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60 * Write the mapfile.
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61 * @param doc The root document containin the map attributes.
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62 *
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63 * @return Currently always true.
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64 */
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65 public boolean write(Document doc) {
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66 logger.debug("write()");
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67 this.root = doc;
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68
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69 //Get the filename.
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70 Element fileNode = (Element)XMLUtils.xpath(
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71 root,
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72 "/mxd/file",
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73 XPathConstants.NODE);
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74 //Write the map attributes.
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75 writeMap();
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76 //Write the layers.
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77 writeLayer();
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78 //Save the map.
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79 mapObj cloneMap = map.cloneMap();
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80 cloneMap.save(mapFilename);
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81 return true;
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82 }
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83
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84 /**
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85 * Create the map object and set the attributes.
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86 */
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87 private void writeMap() {
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88 logger.debug("writeMap()");
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89 //Get the map.
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90 Element mapNode = (Element)XMLUtils.xpath(
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91 root,
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92 "/mxd/map",
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93 XPathConstants.NODE);
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94
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95 //Set the name.
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96 map.setName(mapNode.getAttribute("name"));
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97 map.setMetaData("wms_title", mapNode.getAttribute("name"));
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98 //Set the extent.
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99 map.setExtent(
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100 Double.parseDouble(mapNode.getAttribute("extent_min_x")),
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101 Double.parseDouble(mapNode.getAttribute("extent_min_y")),
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102 Double.parseDouble(mapNode.getAttribute("extent_max_x")),
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103 Double.parseDouble(mapNode.getAttribute("extent_max_y")));
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104
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105 //Set the units.
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106 String units = mapNode.getAttribute("units");
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107 MS_UNITS msu;
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108 if(units.equals("feet")) {
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109 msu = MS_UNITS.MS_FEET;
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110 }
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111 else if(units.equals("inches")) {
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112 msu = MS_UNITS.MS_INCHES;
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113 }
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114 else if(units.equals("kilometers")) {
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115 msu = MS_UNITS.MS_KILOMETERS;
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116 }
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117 else if(units.equals("meters")) {
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118 msu = MS_UNITS.MS_METERS;
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119 }
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120 else if(units.equals("miles")) {
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121 msu = MS_UNITS.MS_MILES;
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122 }
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123 else if(units.equals("nauticalmiles")) {
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124 msu = MS_UNITS.MS_NAUTICALMILES;
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125 }
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126 else if(units.equals("points")) {
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127 msu = MS_UNITS.MS_PIXELS;
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128 }
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129 else {
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130 msu = MS_UNITS.MS_METERS;
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131 }
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132 map.setUnits(msu);
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133
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134 //TODO: Find out whats the correct scale value.
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135 //map.setScaledenom(Double.parseDouble(mapNode.getAttribute("scale")));
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136 }
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137
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138 /**
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139 * Create layer objects and set the attributes.
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140 */
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141 private void writeLayer() {
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142 logger.debug("writeLayer()");
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143 Element mapNode = (Element)XMLUtils.xpath(
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144 root,
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145 "/mxd/map",
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146 XPathConstants.NODE);
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147 NodeList list = mapNode.getElementsByTagName("layer");
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148 for(int i = 0; i < list.getLength(); i++) {
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149 Element layerElement = (Element)list.item(i);
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150 layerObj layer = new layerObj(map);
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151
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152 //The layer name.
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153 layer.setName(layerElement.getAttribute("name"));
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154
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155 //The layer status.
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156 String stat = layerElement.getAttribute("status");
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157 if (stat.equals("on")) {
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158 layer.setStatus(1);
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159 }
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160 else {
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161 layer.setStatus(0);
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162 }
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163
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164 //The scale.
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165 double maxScale =
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166 Double.parseDouble(layerElement.getAttribute("max_scale"));
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167 double minScale =
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168 Double.parseDouble(layerElement.getAttribute("min_scale"));
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169 layer.setMaxscaledenom(maxScale);
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170 layer.setMinscaledenom(minScale);
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171
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172 //The layer type.
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173 String type = layerElement.getAttribute("type");
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174 if(type.equals("point")) {
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175 layer.setType(MS_LAYER_TYPE.MS_LAYER_POINT);
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176 }
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177 else if (type.equals("line")) {
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178 layer.setType(MS_LAYER_TYPE.MS_LAYER_LINE);
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179 }
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180
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181 //The layer datasource.
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182 layer.setData(layerElement.getAttribute("data_source"));
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183
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184 //Write classes.
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185 writeClass(layer, layerElement);
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186 }
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187
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188 }
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189
42
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190 /**
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191 * Adds the classes to the layer.
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192 * @param layer Mapscript layer object.
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193 * @param layerElement Dom element containing the class attributes.
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194 */
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195 private void writeClass(layerObj layer, Element layerElement) {
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196 //Get all renderer elements (renderer in arcgis equals class in the
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197 //mapfile.)
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198 NodeList list = layerElement.getElementsByTagName("renderer");
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199
42
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200 //Create all found class objects and write the symbols and styles for
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201 //each class.
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202 for(int i = 0; i < list.getLength(); i++) {
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203 Element classElement = (Element)list.item(i);
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204 classObj co = new classObj(layer);
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205 co.setName(classElement.getAttribute("name"));
44
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206 if(classElement.hasAttribute("field_count")) {
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207 int count =
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208 Integer.parseInt(classElement.getAttribute("field_count"));
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209 String exp = "";
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210 for(int j = 0; j < count; j++) {
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211 //TODO Find a way to create Expressions.
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212 exp = "([" + classElement.getAttribute("expression_field_" + j);
46
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213 exp += "] " + classElement.getAttribute("expression_operator");
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214 exp += " " + classElement.getAttribute("value") + ")";
44
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215 }
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216 co.setExpression(exp);
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217 }
42
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218 //Write symbols and styles.
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219 writeSymbol(co, classElement);
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220 }
41
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221 }
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222
42
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223 /**
43
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224 * Adds the symbols and styles to the mapfile.
42
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225 * @param co Mapscript class object.
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226 * @param classElement Dom element containing the style and symbol
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227 * attributes.
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228 */
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229 private void writeSymbol(classObj co, Element classElement) {
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230 //Get all symbol elements from dom.
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231 NodeList list = classElement.getElementsByTagName("symbol");
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232
42
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233 //Get the symbol set from the map object.
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234 symbolSetObj symbolSet = map.getSymbolset();
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235
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236 for(int i = 0; i < list.getLength(); i++){
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237 Element symbolElement = (Element) list.item(i);
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238 styleObj style = new styleObj(co);
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239 if (symbolElement.hasAttribute("angle")) {
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240 style.setAngle(
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241 Double.parseDouble(symbolElement.getAttribute("angle")));
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242 }
55
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243 if(symbolElement.hasAttribute("color")) {
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244 String c = symbolElement.getAttribute("color");
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245 Color col = Color.decode(c);
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246 colorObj color = new colorObj(
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247 col.getRed(),
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248 col.getGreen(),
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249 col.getBlue(),
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250 -4);
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251 style.setColor(color);
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252 }
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253 if (symbolElement.hasAttribute ("size")) {
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254 style.setSize(Double.parseDouble(
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255 symbolElement.getAttribute("size")));
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256 }
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257 if(symbolElement.hasAttribute("outline_color")) {
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258 Color oCol = Color.decode(
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259 symbolElement.getAttribute("outline_color"));
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260 colorObj outlineColor = new colorObj(
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261 oCol.getRed(),
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262 oCol.getGreen(),
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263 oCol.getBlue(),
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264 -4);
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265 style.setOutlinecolor(outlineColor);
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266 style.setOutlinewidth(Double.parseDouble(
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267 symbolElement.getAttribute("outline_size")));
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268 }
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269 //Section for line symbols
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270 //Setting the width
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271 if(symbolElement.hasAttribute("width")) {
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272 style.setWidth((int)Double.parseDouble(
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273 symbolElement.getAttribute("width")));
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274 }
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275 String name = symbolElement.getAttribute("name");
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276 style.setSymbolByName(map, name);
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277 symbolObj sym = symbolSet.getSymbolByName(name);
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278
62
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279 //The following lines are for dashed and/or dotted lines.
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280 //These lines throw an "incorrect array size" error.
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281 //TODO Find out how to set the pattern correctly.
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282 // style.setPatternlength(2);
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283 // double[] vals = new double[] {1.0, 2.0, 3.0};
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284 // vals[0] = 1.0;
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285 // vals[1] = 2.0;
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286 // vals[2] = 3.0;
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287 // vals[3] = 4.0;
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288 // style.setPattern(vals);
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289 String symType = symbolElement.getAttribute("style");
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290 if(symType.equals("point")) {
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291 writePointSymbol(sym, symbolElement);
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292 }
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293 else if (symType.equals("arrow")) {
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294 writeArrowSymbol(sym, symbolElement);
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295 }
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296 else if (symType.equals("char")) {
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297 writeCharSymbol(sym, symbolElement);
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298 }
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299 else if(symType.equals("line")) {
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300 writeSimpleLineSymbol(sym, symbolElement);
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301 }
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302 }
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303 saveSymbolSet(symbolSet);
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304 }
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305
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306
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307 /**
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308 * Write point symbols to the map.
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309 * @param symbol The symbol object.
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310 * @param symbolElement The DOM object containing the attributes.
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311 */
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312 private void writePointSymbol(symbolObj symbol, Element symbolElement) {
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313 lineObj points = new lineObj();
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314 points.add(new pointObj(1,1,0));
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315 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue());
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316 symbol.setPoints(points);
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317 symbol.setFilled(1);
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318 }
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319
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320
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321 /**
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322 * Write arrow symbol to the map.
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323 * @param symbol The symbol object.
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324 * @param symbolElement The DOM object containig the attributes.
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325 */
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326 private void writeArrowSymbol(symbolObj symbol, Element symbolElement) {
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327 double len = Double.parseDouble(symbolElement.getAttribute("length"));
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328 double width = Double.parseDouble(symbolElement.getAttribute("width"));
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329 double ratio = len/width;
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330 lineObj points = new lineObj();
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331
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332 points.add(new pointObj(0, 0, 0));
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333 points.add(new pointObj((1*ratio), 0.5, 0));
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334 points.add(new pointObj(0, 1, 0));
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335 points.add(new pointObj(0, 0, 0));
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336 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR.swigValue());
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337 symbol.setPoints(points);
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338 symbol.setFilled(1);
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339 }
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340
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341
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342 /**
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343 * Write font symbols to the map.
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344 * @param symbol The symbol object.
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345 * @param symbolElement The DOM object containing the attributes.
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346 */
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347 private void writeCharSymbol(symbolObj symbol, Element symbolElement) {
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348 //TODO Write the symbol correctly. See Issue 3885 on trac.osgeo.org
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349 symbol.setFont(symbolElement.getAttribute("font"));
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350 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue());
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351 symbol.setAntialias(1);
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352 symbol.setCharacter("#&" + symbolElement.getAttribute("char") + ";");
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353 }
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354
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355
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356 private void writeSimpleLineSymbol(
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357 symbolObj symbol,
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358 Element symbolElement) {
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359 logger.debug("writeSimpleLineSymbol()");
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360 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_SIMPLE.swigValue());
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361 String ls = symbolElement.getAttribute("linestyle");
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362 if(ls.equals("solid")) {
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363 symbol.setFilled(1);
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364 }
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365 }
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366
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367
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368 /**
395307e8b7ee First MapScript Writer that generates valid mapfiles.
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369 * Save the symbol set.
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370 * @param symbols The symbol set.
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371 */
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372 private void saveSymbolSet(symbolSetObj symbols) {
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373 Element fileNode = (Element)XMLUtils.xpath(
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374 root,
395307e8b7ee First MapScript Writer that generates valid mapfiles.
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375 "/mxd/file",
395307e8b7ee First MapScript Writer that generates valid mapfiles.
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376 XPathConstants.NODE);
395307e8b7ee First MapScript Writer that generates valid mapfiles.
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377 String path = "";
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378 if(mapFilename.contains("/")) {
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379 path = mapFilename.substring(0, mapFilename.lastIndexOf("/"));
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395307e8b7ee First MapScript Writer that generates valid mapfiles.
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380 }
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381 else if(mapFilename.contains("\\")) {
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382 path = mapFilename.substring(0, mapFilename.lastIndexOf("\\"));
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383 }
395307e8b7ee First MapScript Writer that generates valid mapfiles.
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diff changeset
384 symbols.save(path + "/symbols.sym");
395307e8b7ee First MapScript Writer that generates valid mapfiles.
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385 }
41
60ed2164035a Introduced MapScript writer.
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386 }
60ed2164035a Introduced MapScript writer.
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387
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