annotate src/java/de/intevation/mxd/reader/ClassBreakRendererReader.java @ 116:c8a1361ddd38

Improved exceptionhandlin for renderer reader.
author Raimund Renkert <rrenkert@intevation.de>
date Wed, 15 Jun 2011 18:37:27 +0200
parents 59e06c405a9a
children 0f5819732288
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.lang.Exception;
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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.IFeatureRenderer;
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8 import com.esri.arcgis.carto.ClassBreaksRenderer;
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9 import com.esri.arcgis.display.ISymbol;
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11 import org.w3c.dom.Element;
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12
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13 import de.intevation.mxd.utils.MapToXMLUtils;
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14 import java.io.IOException;
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15
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16 /**
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17 * Reads the ClassBreaksRender Object Attributes.
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18 *
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19 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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20 */
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21 public class ClassBreakRendererReader
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22 implements IRendererReader {
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24 /**
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25 * The logger.
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26 */
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27 private static final Logger logger =
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28 Logger.getLogger(ClassBreakRendererReader.class);
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29
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30 /**
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31 * Private member.
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32 */
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33 private ClassBreaksRenderer renderer;
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34 private Element layer;
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35 private MapToXMLUtils util;
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37
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38 public ClassBreakRendererReader(IFeatureRenderer renderer)
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39 throws Exception {
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40 logger.debug("contructor()");
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41 if(renderer instanceof ClassBreaksRenderer)
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42 this.renderer = (ClassBreaksRenderer)renderer;
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43 else
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44 throw new Exception("Not a ClassBreaksRenderer!");
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45 }
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46
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47 /**
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48 * Setter for the parent XML element.
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49 *
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50 * @param parent The XML parent node.
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51 */
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52 public void setParent(Element parent) {
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53 this.layer = parent;
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54 }
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55
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56 /**
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57 * Setter for XML document helper.
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58 *
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59 * @param util The helper class for storing map information.
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60 */
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61 public void setUtil(MapToXMLUtils util) {
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62 this.util = util;
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63 }
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64
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65 /**
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66 * Reads the Renderer attributes.
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67 *
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68 * @return The XML node.
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69 */
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70 public Element read() {
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71 logger.debug("read()");
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72
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73 int count = 0;
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74 try {
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75 count = renderer.getBreakCount();
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76 }
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77 catch(IOException ioe) {
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78 logger.warn(
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79 "No break symbols found in renderer." +
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80 " Stopped reading this renderer.");
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81 return layer;
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82 }
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83
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84 for(int i = 0; i < count; i++){
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85 Element rendererElement = util.addRenderer(layer);
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86 try {
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87 rendererElement.setAttribute("value",
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88 String.valueOf(renderer.getBreak(i)));
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89
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90 rendererElement.setAttribute(
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91 "field_count",
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92 String.valueOf(renderer.getFieldCount()));
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93 for(int j = 0; j < renderer.getFieldCount(); j++) {
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94 rendererElement.setAttribute(
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95 "expression_field_" + j,
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96 renderer.getField(j));
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97
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98 }
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99 rendererElement.setAttribute(
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100 "min_value",
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101 String.valueOf(renderer.getMinimumBreak()));
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102 rendererElement.setAttribute("expression_operator", "<=");
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103
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104 ISymbol sym = renderer.getSymbol(i);
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105 MarkerSymbolReader markerReader = new MarkerSymbolReader();
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106 LineSymbolReader lineReader = new LineSymbolReader();
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107 FillSymbolReader fillReader = new FillSymbolReader();
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108 if(markerReader.canRead(sym)) {
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109 markerReader.setSymbol(sym);
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110 markerReader.setUtil(util);
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111 markerReader.setParent(rendererElement);
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112 markerReader.read();
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113 }
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114 else if(lineReader.canRead(sym)) {
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115 lineReader.setSymbol(sym);
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116 lineReader.setUtil(util);
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117 lineReader.setParent(rendererElement);
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118 lineReader.read();
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119 }
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120 else if(fillReader.canRead(sym)) {
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121 fillReader.setSymbol(sym);
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122 fillReader.setUtil(util);
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123 fillReader.setParent(rendererElement);
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124 fillReader.read();
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125 }
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126 else {
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127 logger.debug("Not a known symbol type: " +
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128 sym.getClass().toString());
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129 }
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130 }
116
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131 catch(Exception e) {
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132 logger.error(
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133 "Could not read data for " + i +
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134 ". break of renderer. Stopped reading this renderer.");
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135 return layer;
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136 }
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137 }
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138 return layer;
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139 }
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140 }
cbd67b1100d8 Initial commit of the first prototype.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
141 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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