Mercurial > mxd2map

annotate src/java/de/intevation/mxd/reader/MapReader.java @ 39:f807c9c81019

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Read further map attributes.
author Raimund Renkert <rrenkert@intevation.de>
date Thu, 14 Apr 2011 11:09:35 +0200
parents 7a927921eb6c
children ef7ca23c4233
rev   line source
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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 //Member
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28 private Map map;
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29 private MapToXMLUtils util;
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31 private static final Logger logger = Logger.getLogger(MapReader.class);
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32
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33 //Constructor
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34 public MapReader(IMap map)
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35 throws Exception {
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36 logger.debug("constructor()");
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37 if(map instanceof Map) {
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38 this.map = (Map)map;
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39 }
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40 else {
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41 throw new Exception("Not an instance of \"Map\"!");
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42 }
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43 }
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44
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45
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46 //Methods
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47
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48 /**
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49 * Reads the Map attributes.
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50 */
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51 public void read() throws IOException{
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52 logger.debug("read()");
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53 if(util == null)
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54 throw new IOException("Can not write to document.");
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55
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56 //Create XML Element for map.
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57 Element mapElement;
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58 try{
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59 mapElement = util.createMap();
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60 }
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61 catch(Exception e){
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62 e.printStackTrace();
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63 return;
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64 }
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65
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66 //Read map name.
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67 mapElement.setAttribute("name", map.getName());
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68
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69 //Read map extent.
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70 IEnvelope ext = map.getExtent();
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71 mapElement.setAttribute(
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72 "extent_max_x",
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73 String.valueOf(ext.getXMax()));
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74 mapElement.setAttribute(
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75 "extent_max_y",
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76 String.valueOf(ext.getYMax()));
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77 mapElement.setAttribute(
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78 "extent_min_x",
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79 String.valueOf(ext.getXMin()));
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80 mapElement.setAttribute(
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81 "extent_min_y",
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82 String.valueOf(ext.getYMin()));
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83
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84 //Read map units.
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85 int units = map.getMapUnits();
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86 String s_units;
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87 switch(units) {
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88 case 3: s_units = "feet"; break;
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89 case 1: s_units = "inches"; break;
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90 case 10: s_units = "kilometers"; break;
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91 case 9: s_units = "meters"; break;
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92 case 5: s_units = "miles"; break;
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93 case 6: s_units = "nauticalmiles"; break;
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94 case 2: s_units = "points"; break;
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95 default : s_units = "not supported"; break;
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96 }
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97 mapElement.setAttribute("units", s_units);
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98
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99 //TODO: Find out whats the correct scale value.
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100 mapElement.setAttribute(
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101 "scale",
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102 String.valueOf(map.getMaxScale()));
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103
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104 //Read the projection.
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105 ISpatialReference sr = map.getSpatialReference();
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106 if(sr instanceof ProjectedCoordinateSystem){
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107 ProjectedCoordinateSystem pcs = (ProjectedCoordinateSystem)sr;
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108 Projection p = (Projection)pcs.getProjection();
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109 mapElement.setAttribute("projection", p.getName());
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110 }
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111 else if(sr instanceof GeographicCoordinateSystem){
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112 GeographicCoordinateSystem gcs = (GeographicCoordinateSystem)sr;
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113 mapElement.setAttribute("projection", gcs.getName());
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114 }
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115 else if(sr instanceof UnknownCoordinateSystem) {
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116 UnknownCoordinateSystem ucs = (UnknownCoordinateSystem)sr;
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117 mapElement.setAttribute("projection", sr.getName());
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118 }
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119 else{
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120 throw new IOException("Unknown SpatialReference: " +
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121 sr.getClass().toString());
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122 }
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123 }
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124
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125 public void setUtil(MapToXMLUtils util){
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126 this.util = util;
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127 }
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128 }
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129 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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