Mercurial > mxd2map

annotate src/java/de/intevation/mxd/reader/GdbRasterCatalogLayerReader.java @ 117:6c3d880db7c5

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Improved exception handling for layer reader.
author Raimund Renkert <rrenkert@intevation.de>
date Thu, 16 Jun 2011 12:05:34 +0200
parents 59e06c405a9a
children 39957898c694
rev   line source
36
472aa36d0e01 Added a new layer reader and symbol reader.
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1 package de.intevation.mxd.reader;
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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 com.esri.arcgis.carto.ILayer;
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6 import com.esri.arcgis.carto.GdbRasterCatalogLayer;
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7
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8 import org.w3c.dom.Element;
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9 import java.io.IOException;
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10 import de.intevation.mxd.utils.MapToXMLUtils;
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11
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12 /**
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13 * Reads Layer information.
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14 *
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15 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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16 */
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17 public class GdbRasterCatalogLayerReader
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18 implements ILayerReader {
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19
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20 /**
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21 * The logger.
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22 */
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23 private static final Logger logger =
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24 Logger.getLogger(GdbRasterCatalogLayerReader.class);
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25
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26 /**
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27 * Privte member.
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28 */
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29 private GdbRasterCatalogLayer layer;
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30 private MapToXMLUtils util;
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31
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32
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33 public GdbRasterCatalogLayerReader(ILayer layer)
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34 throws Exception {
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35 if(layer instanceof GdbRasterCatalogLayer) {
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36 this.layer = (GdbRasterCatalogLayer)layer;
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37 }
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38 else {
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39 throw new Exception("Not an instance of GdbRastaCatalogLayer: " +
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40 layer.getClass().toString());
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41 }
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42 }
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43
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44 /**
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45 * Setter for XML document helper.
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46 *
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47 * @param util The helper for storing map information.
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48 */
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49 public void setUtil(MapToXMLUtils util) {
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50 this.util = util;
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51 }
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52
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53 /**
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54 * Reads the Layer content.
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55 *
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56 * @return The layer XML element.
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57 */
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58 public Element read() {
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59 logger.debug("read()");
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60
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61 Element layerElement;
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62 try {
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63 layerElement = util.addLayer();
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64 }
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65 catch(Exception e) {
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66 logger.error(
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67 "Could not create DOM element for layer." +
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68 "Stopped reading layer.");
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69 return null;
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70 }
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71
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72 try {
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73 layerElement.setAttribute("name", layer.getName());
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74 }
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75 catch(IOException ioe) {
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76 logger.warn(
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77 "Could not read layer name. " +
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78 "Setting layer name to \"default\".");
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79 layerElement.setAttribute("name", "default");
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80 }
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81
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82 try {
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83 layerElement.setAttribute("min_scale",
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84 String.valueOf(layer.getMinimumScale()));
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85 }
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86 catch(IOException ioe) {
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87 logger.warn(
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88 "Could not read minimum layer scale." +
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89 "Setting minimum layer scale to 1000");
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90 layerElement.setAttribute("min_scale", "1000");
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91 }
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92
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93 try {
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94 layerElement.setAttribute("max_scale",
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95 String.valueOf(layer.getMaximumScale()));
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96 }
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97 catch(IOException ioe) {
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98 logger.warn(
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99 "Could not read maximum layer scale." +
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100 "Setting maximum layer scale to 1000000");
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101 layerElement.setAttribute("max_scale", "1000000");
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102 }
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103
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104 try {
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105 if(layer.isVisible()) {
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106 layerElement.setAttribute("status", "on");
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107 }
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108 else {
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109 layerElement.setAttribute("status", "off");
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110 }
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111 }
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112 catch(IOException ioe) {
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113 logger.warn(
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114 "Could not read layer status." +
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115 " Setting layer status to \"on\"");
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116 layerElement.setAttribute("status", "on");
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117 }
117
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118
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119 try {
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120 layerElement.setAttribute("definition_query",
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121 layer.getDefinitionExpression());
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122 }
117
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123 catch(IOException ioe) {
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124 logger.warn(
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125 "Could not read layer definition query." +
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126 "Setting empty definition query.");
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127 layerElement.setAttribute("definition_query", "");
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128 }
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129 return layerElement;
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130 }
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131 }
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132 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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