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annotate src/java/de/intevation/mxd/writer/MapScriptWriter.java @ 96:c285ed08b72c

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Removed needless imports.
author Raimund Renkert <rrenkert@intevation.de>
date Wed, 01 Jun 2011 14:21:24 +0200
parents 1ae8e05b863f
children 18e4f143896b
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
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11 import edu.umn.gis.mapscript.mapObj;
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12 import edu.umn.gis.mapscript.layerObj;
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13 import edu.umn.gis.mapscript.classObj;
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14
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15 import edu.umn.gis.mapscript.MS_UNITS;
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16 import edu.umn.gis.mapscript.MS_LAYER_TYPE;
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17
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18 import de.intevation.mxd.utils.XMLUtils;
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19
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20 /**
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21 * The Mapfile Writer.
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22 * This Writer uses the MapScript Java API to create Mapfiles from a DOM.
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23 *
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24 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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25 */
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26 public class MapScriptWriter
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27 implements IWriter
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28 {
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29 /**
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30 * The Logger.
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31 */
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32 private static final Logger logger = Logger.getLogger(MapScriptWriter.class);
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33
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34 /**
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35 * Private member.
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36 */
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37 private Document root;
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38 private mapObj map;
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39 private String mapFilename;
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41 public MapScriptWriter() {
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42 map = new mapObj("");
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43 mapFilename = "";
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44 }
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45
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46 public MapScriptWriter(String templ, String filename) {
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47 map = new mapObj(templ);
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48 mapFilename = filename;
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49 }
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50
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51 /**
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52 * Write the mapfile.
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53 * @param doc The root document containin the map attributes.
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54 *
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55 * @return Currently always true.
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56 */
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57 public boolean write(Document doc)
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58 throws Exception {
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59 logger.debug("write()");
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60 this.root = doc;
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61
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62 //Get the filename.
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63 Element fileNode = (Element)XMLUtils.xpath(
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64 root,
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65 "/mxd/file",
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66 XPathConstants.NODE);
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67 //Write the map attributes.
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68 writeMap();
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69 //Write the layers.
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70 writeLayer();
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71 //Save the map.
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72 mapObj cloneMap = map.cloneMap();
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73 cloneMap.save(mapFilename);
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74 return true;
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75 }
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76
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77 /**
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78 * Create the map object and set the attributes.
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79 */
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80 private void writeMap() {
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81 logger.debug("writeMap()");
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82 //Get the map.
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83 Element mapNode = (Element)XMLUtils.xpath(
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84 root,
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85 "/mxd/map",
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86 XPathConstants.NODE);
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87
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88 //Set the name.
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89 map.setName(mapNode.getAttribute("name"));
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90 map.setMetaData("wms_title", mapNode.getAttribute("name"));
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91 //Set the extent.
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92 map.setExtent(
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93 Double.parseDouble(mapNode.getAttribute("extent_min_x")),
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94 Double.parseDouble(mapNode.getAttribute("extent_min_y")),
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95 Double.parseDouble(mapNode.getAttribute("extent_max_x")),
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96 Double.parseDouble(mapNode.getAttribute("extent_max_y")));
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97
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98 //Set the units.
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99 String units = mapNode.getAttribute("units");
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100 MS_UNITS msu;
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101 if(units.equals("feet")) {
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102 msu = MS_UNITS.MS_FEET;
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103 }
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104 else if(units.equals("inches")) {
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105 msu = MS_UNITS.MS_INCHES;
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106 }
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107 else if(units.equals("kilometers")) {
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108 msu = MS_UNITS.MS_KILOMETERS;
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109 }
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110 else if(units.equals("meters")) {
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111 msu = MS_UNITS.MS_METERS;
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112 }
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113 else if(units.equals("miles")) {
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114 msu = MS_UNITS.MS_MILES;
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115 }
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116 else if(units.equals("nauticalmiles")) {
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117 msu = MS_UNITS.MS_NAUTICALMILES;
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118 }
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119 else if(units.equals("points")) {
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120 msu = MS_UNITS.MS_PIXELS;
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121 }
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122 else {
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123 msu = MS_UNITS.MS_METERS;
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124 }
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125 map.setUnits(msu);
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126
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127 //TODO: Find out whats the correct scale value.
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128 //map.setScaledenom(Double.parseDouble(mapNode.getAttribute("scale")));
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129 }
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130
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131 /**
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132 * Create layer objects and set the attributes.
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133 */
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134 private void writeLayer()
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135 throws Exception {
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136 logger.debug("writeLayer()");
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137 Element mapNode = (Element)XMLUtils.xpath(
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138 root,
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139 "/mxd/map",
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140 XPathConstants.NODE);
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141 NodeList list = mapNode.getElementsByTagName("layer");
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142 for(int i = 0; i < list.getLength(); i++) {
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143 Element layerElement = (Element)list.item(i);
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144 layerObj layer = new layerObj(map);
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145
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146 //The layer name.
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147 layer.setName(layerElement.getAttribute("name"));
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148
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149 //The layer status.
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150 String stat = layerElement.getAttribute("status");
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151 if (stat.equals("on")) {
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152 layer.setStatus(1);
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153 }
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154 else {
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155 layer.setStatus(0);
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156 }
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157
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158 //The scale.
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159 double maxScale =
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160 Double.parseDouble(layerElement.getAttribute("max_scale"));
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161 double minScale =
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162 Double.parseDouble(layerElement.getAttribute("min_scale"));
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163 layer.setMaxscaledenom(maxScale);
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164 layer.setMinscaledenom(minScale);
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165
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166 //The layer type.
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167 String type = layerElement.getAttribute("type");
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168 if(type.equals("point")) {
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169 layer.setType(MS_LAYER_TYPE.MS_LAYER_POINT);
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170 }
62
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171 else if (type.equals("line")) {
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172 layer.setType(MS_LAYER_TYPE.MS_LAYER_LINE);
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173 }
42
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174
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175 //The layer datasource.
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176 layer.setData(layerElement.getAttribute("data_source"));
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177
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178 //Write classes.
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179 writeClass(layer, layerElement);
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180 }
41
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181
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182 }
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183
42
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184 /**
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185 * Adds the classes to the layer.
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186 * @param layer Mapscript layer object.
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187 * @param layerElement Dom element containing the class attributes.
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188 */
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189 private void writeClass(layerObj layer, Element layerElement)
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190 throws Exception {
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191 logger.debug("writeClass(layerObj, Element)");
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192 //Get all renderer elements (renderer in arcgis equals class in the
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193 //mapfile.)
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194 NodeList list = layerElement.getElementsByTagName("renderer");
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195
42
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196 //Create all found class objects and write the symbols and styles for
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197 //each class.
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198 for(int i = 0; i < list.getLength(); i++) {
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199 Element classElement = (Element)list.item(i);
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200 classObj co = new classObj(layer);
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201 co.setName(classElement.getAttribute("name"));
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202 if(classElement.hasAttribute("field_count")) {
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203 int count =
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204 Integer.parseInt(classElement.getAttribute("field_count"));
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205 String exp = "";
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206 for(int j = 0; j < count; j++) {
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207 //TODO Find a way to create Expressions.
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208 exp = "([" + classElement.getAttribute("expression_field_" + j);
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209 exp += "] " + classElement.getAttribute("expression_operator");
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210 exp += " " + classElement.getAttribute("value") + ")";
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211 }
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212 co.setExpression(exp);
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213 }
42
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214 //Write symbols and styles.
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215 NodeList slist = classElement.getElementsByTagName("symbol");
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216 String type = layerElement.getAttribute("type");
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217 if(type.equals("point")) {
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218 for(int j = 0; j < slist.getLength(); j++){
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219 Element symbolElement = (Element) slist.item(j);
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220 MarkerStyleWriter swriter = new MarkerStyleWriter (this.map, co);
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221 swriter.write (symbolElement);
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222 }
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223 }
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224 else if(type.equals("line")) {
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225 for(int j = 0; j < slist.getLength(); j++){
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226 Element symbolElement = (Element) slist.item(j);
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227 LineStyleWriter swriter = new LineStyleWriter (this.map, co);
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228 swriter.write (symbolElement);
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229 }
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230 }
42
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231 }
41
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232 }
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233 }
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234
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