Mercurial > mxd2map

annotate src/java/de/intevation/mxd/reader/MapReader.java @ 170:b9ee44070056

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Manage projections and units.
author vc11884admin@VC11884.win.bsh.de
date Wed, 06 Jul 2011 15:17:05 +0200
parents 9f74f4d36822
children 0bde090506f9
rev   line source
33
c51376f8e24c Separated converter components into packages.
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diff changeset
1 package de.intevation.mxd.reader;
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2
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3 import java.io.IOException;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import com.esri.arcgis.carto.IMap;
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8 import com.esri.arcgis.carto.Map;
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9 import com.esri.arcgis.geometry.ISpatialReference;
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10 import com.esri.arcgis.geometry.ProjectedCoordinateSystem;
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11 import com.esri.arcgis.geometry.GeographicCoordinateSystem;
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12 import com.esri.arcgis.geometry.UnknownCoordinateSystem;
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13 import com.esri.arcgis.geometry.Projection;
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14 import com.esri.arcgis.geometry.IEnvelope;
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e5fdc37f8f94 Added XMLUtils to store map information.
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15
e5fdc37f8f94 Added XMLUtils to store map information.
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16 import org.w3c.dom.Element;
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17
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18 import de.intevation.mxd.utils.MapToXMLUtils;
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19
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20 /**
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21 * Reads map information.
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22 *
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23 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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24 */
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25 public class MapReader {
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26 /**
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27 * The Logger.
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28 */
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29 private static final Logger logger = Logger.getLogger(MapReader.class);
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30
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31 /**
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32 * Private member.
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33 */
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34 private Map map;
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35 private MapToXMLUtils util;
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36
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37
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38 public MapReader(IMap map)
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39 throws Exception {
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40 logger.debug("constructor()");
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41 if(map instanceof Map) {
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42 this.map = (Map)map;
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43 }
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44 else {
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45 throw new Exception("Not an instance of \"Map\"!");
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46 }
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47 }
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48
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49 /**
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50 * Reads the Map attributes.
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51 */
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52 public void read()
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53 throws IOException {
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54 logger.debug("read()");
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55 if(util == null) {
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56 throw new IOException("Can not write to document.");
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57 }
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58
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59 //Create XML Element for map.
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60 Element mapElement;
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61 try{
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62 mapElement = util.createMap();
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63 }
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64 catch(Exception e){
121
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65 logger.error("Could not create DOM element. Aborting.");
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66 throw new IOException("Error creating DOM element.");
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67 }
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68
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69 //Read map name.
121
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70 try {
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71 mapElement.setAttribute("name", map.getName());
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72 }
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73 catch(IOException ioe) {
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74 logger.warn(
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75 "Could not read map name." +
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76 " Setting map name to \"default-map\"");
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77 mapElement.setAttribute("name", "default-map");
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78 }
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79
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80 //Read map extent.
121
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81 try {
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82 IEnvelope ext = map.getExtent();
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83 mapElement.setAttribute(
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84 "extent_max_x",
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85 String.valueOf(ext.getXMax()));
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86 mapElement.setAttribute(
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87 "extent_max_y",
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88 String.valueOf(ext.getYMax()));
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89 mapElement.setAttribute(
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90 "extent_min_x",
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91 String.valueOf(ext.getXMin()));
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92 mapElement.setAttribute(
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93 "extent_min_y",
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94 String.valueOf(ext.getYMin()));
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95 }
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96 catch(IOException ioe) {
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97 logger.warn("Could not read map extend. Setting to 0, 0, 0, 0.");
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98 mapElement.setAttribute("extend_max_x", "0");
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99 mapElement.setAttribute("extend_min_x", "0");
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100 mapElement.setAttribute("extend_max_y", "0");
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101 mapElement.setAttribute("extend_min_y", "0");
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102 }
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103
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104 //Read map units.
121
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105 int units = 0;
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106 try {
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107 units = map.getMapUnits();
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108 }
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109 catch(IOException ioe) {
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110 logger.warn(
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111 "Could not read map units." +
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112 " Setting map units to unknown.");
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113 units = 0;
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114 }
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115
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116 String s_units;
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117 switch(units) {
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118 case 1: s_units = "inches"; break;
121
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119 case 2: s_units = "points"; break;
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120 case 3: s_units = "feet"; break;
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121 case 4: s_units = "yards"; break;
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122 case 5: s_units = "miles"; break;
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123 case 6: s_units = "nauticalmiles"; break;
121
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124 case 7: s_units = "millimeters"; break;
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125 case 8: s_units = "centimeters"; break;
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126 case 9: s_units = "meters"; break;
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127 case 10: s_units = "kilometers"; break;
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128 case 11: s_units = "degree"; break;
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129 case 12: s_units = "decimeters"; break;
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130 case 13: s_units = "units_last"; break;
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131 default : s_units = "unknown"; break;
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132 }
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133 mapElement.setAttribute("units", s_units);
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134
121
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135 if(units == 0) {
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136 logger.warn(
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137 "Unknown units." +
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138 " Please edit units in resulting mapfile.");
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139 }
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140
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141 //TODO: Find out whats the correct scale value.
121
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142 try {
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143 mapElement.setAttribute(
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144 "scale",
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145 String.valueOf(map.getMaxScale()));
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146 }
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147 catch(IOException ioe) {
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148 logger.warn("Could not read map scale. Setting map scale to 1000");
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149 mapElement.setAttribute("scale", "1000");
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150 }
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151
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152 //Read the projection.
121
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153 try {
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154 ISpatialReference sr = map.getSpatialReference();
170
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155 int projection = 0;
121
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156 if(sr instanceof ProjectedCoordinateSystem) {
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157 ProjectedCoordinateSystem pcs = (ProjectedCoordinateSystem)sr;
170
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158 projection = pcs.getFactoryCode();
121
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159 }
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160 else if(sr instanceof GeographicCoordinateSystem) {
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161 GeographicCoordinateSystem gcs = (GeographicCoordinateSystem)sr;
170
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162 projection = gcs.getFactoryCode();
121
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163 }
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164 else if(sr instanceof UnknownCoordinateSystem) {
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165 UnknownCoordinateSystem ucs = (UnknownCoordinateSystem)sr;
170
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166 projection = 0;
121
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167 }
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168 else{
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169 logger.debug(
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170 "Unknown SpatialReference: " +
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171 sr.getClass().toString());
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172 }
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173
170
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174 if(projection == 0) {
121
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175 logger.warn(
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176 "Unknown projection." +
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177 " Please edit projection in resulting mapfile.");
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178 }
170
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179 mapElement.setAttribute("projection", String.valueOf(projection));
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180 }
121
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181 catch(IOException ioe) {
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182 logger.warn(
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183 "Could not read map projection." +
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184 " Setting map projection to unknown.");
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185 mapElement.setAttribute("projection", "Unknown");
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186 }
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187 }
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188
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189 /**
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190 * Set the utilities.
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191 */
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192 public void setUtil(MapToXMLUtils util) {
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193 this.util = util;
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cbd67b1100d8 Initial commit of the first prototype.
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194 }
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195 }
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196 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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