Mercurial > mxd2map

annotate src/java/de/intevation/mxd/reader/MapReader.java @ 43:ef7ca23c4233

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Added comments, done some code styling and removed typos.
author Raimund Renkert <rrenkert@intevation.de>
date Fri, 15 Apr 2011 15:44:54 +0200
parents f807c9c81019
children 8da6555f1c12
rev   line source
33
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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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15
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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){
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65 e.printStackTrace();
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66 return;
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67 }
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68
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69 //Read map name.
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70 mapElement.setAttribute("name", map.getName());
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71
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72 //Read map extent.
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73 IEnvelope ext = map.getExtent();
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74 mapElement.setAttribute(
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75 "extent_max_x",
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76 String.valueOf(ext.getXMax()));
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77 mapElement.setAttribute(
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78 "extent_max_y",
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79 String.valueOf(ext.getYMax()));
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80 mapElement.setAttribute(
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81 "extent_min_x",
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82 String.valueOf(ext.getXMin()));
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83 mapElement.setAttribute(
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84 "extent_min_y",
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85 String.valueOf(ext.getYMin()));
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86
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87 //Read map units.
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88 int units = map.getMapUnits();
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89 String s_units;
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90 switch(units) {
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91 case 3: s_units = "feet"; break;
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92 case 1: s_units = "inches"; break;
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93 case 10: s_units = "kilometers"; break;
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94 case 9: s_units = "meters"; break;
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95 case 5: s_units = "miles"; break;
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96 case 6: s_units = "nauticalmiles"; break;
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97 case 2: s_units = "points"; break;
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98 default : s_units = "not supported"; break;
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99 }
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100 mapElement.setAttribute("units", s_units);
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101
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102 //TODO: Find out whats the correct scale value.
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103 mapElement.setAttribute(
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104 "scale",
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105 String.valueOf(map.getMaxScale()));
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106
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107 //Read the projection.
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108 ISpatialReference sr = map.getSpatialReference();
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109 if(sr instanceof ProjectedCoordinateSystem) {
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110 ProjectedCoordinateSystem pcs = (ProjectedCoordinateSystem)sr;
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111 Projection p = (Projection)pcs.getProjection();
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112 mapElement.setAttribute("projection", p.getName());
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113 }
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114 else if(sr instanceof GeographicCoordinateSystem) {
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115 GeographicCoordinateSystem gcs = (GeographicCoordinateSystem)sr;
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116 mapElement.setAttribute("projection", gcs.getName());
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117 }
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118 else if(sr instanceof UnknownCoordinateSystem) {
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119 UnknownCoordinateSystem ucs = (UnknownCoordinateSystem)sr;
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120 mapElement.setAttribute("projection", sr.getName());
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121 }
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122 else{
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123 throw new IOException("Unknown SpatialReference: " +
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124 sr.getClass().toString());
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125 }
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126 }
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127
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128 /**
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129 * Set the utilities.
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130 */
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131 public void setUtil(MapToXMLUtils util) {
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132 this.util = util;
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133 }
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134 }
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135 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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