Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/exports/ChartInfoGenerator.java @ 7033:0d91a6598a89 generator-refactoring
Add a copy of the ChartGenerator class.
This class will have very reduced functionality and mostly
provide the interface defined in OutGenerator and work as
a bridge for the Charts that are not in a Diagram (think svg export)
This will later replace the ChartGenerator class again after the
refactoring is done.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Tue, 17 Sep 2013 16:49:37 +0200 |
parents | 1b35b2ddfc28 |
children | 5c6fd2c010dd |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.exports; |
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10 |
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11 import org.dive4elements.river.collections.D4EArtifactCollection; |
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12 import org.dive4elements.river.java2d.NOPGraphics2D; |
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13 import org.dive4elements.river.themes.ThemeDocument; |
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14 |
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15 import java.io.IOException; |
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16 import java.io.OutputStream; |
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17 |
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18 import java.awt.Transparency; |
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19 import java.awt.Graphics2D; |
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20 |
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21 import java.awt.geom.Rectangle2D; |
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22 |
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23 import java.awt.image.BufferedImage; |
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24 |
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25 import org.w3c.dom.Document; |
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26 |
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27 import org.apache.log4j.Logger; |
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28 |
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29 import org.jfree.chart.ChartRenderingInfo; |
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30 import org.jfree.chart.JFreeChart; |
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31 |
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32 import org.dive4elements.artifacts.Artifact; |
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33 import org.dive4elements.artifacts.CallContext; |
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34 |
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35 import org.dive4elements.artifactdatabase.state.ArtifactAndFacet; |
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36 import org.dive4elements.artifactdatabase.state.Settings; |
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37 |
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38 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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39 |
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40 |
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41 /** |
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42 * An OutGenerator that generates meta information for charts. A concrete |
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43 * ChartInfoGenerator need to instantiate a concrete ChartGenerator and dispatch |
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44 * the methods to that instance. The only thing this ChartInfoGenerator needs |
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45 * to, is to overwrite the generate() method which doesn't write the chart image |
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46 * to the OutputStream but a Document that contains some meta information of the |
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47 * created chart. |
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48 * |
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49 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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50 */ |
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51 public abstract class ChartInfoGenerator implements OutGenerator { |
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52 |
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53 public static final boolean USE_NOP_GRAPHICS = |
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54 Boolean.getBoolean("info.rendering.nop.graphics"); |
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55 |
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56 /** The logger used in this generator.*/ |
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57 private static Logger logger = |
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58 Logger.getLogger(ChartInfoGenerator.class); |
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59 |
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60 |
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61 /** The OutGenerator that creates the charts.*/ |
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62 protected ChartGenerator generator; |
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63 |
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64 protected OutputStream out; |
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65 |
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66 |
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67 |
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68 public ChartInfoGenerator(ChartGenerator generator) { |
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69 this.generator = generator; |
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70 } |
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71 |
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72 |
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73 /** |
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74 * Dispatches the operation to the instantiated generator. |
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75 * |
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76 * @param request |
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77 * @param out |
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78 * @param context |
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79 */ |
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80 public void init(Document request, OutputStream out, CallContext context) { |
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81 this.out = out; |
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82 |
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83 generator.init(request, out, context); |
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84 } |
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85 |
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86 |
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87 /** |
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88 * Dispatches the operation to the instantiated generator. |
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89 * |
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90 * @param master The master artifact |
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91 */ |
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92 public void setMasterArtifact(Artifact master) { |
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93 generator.setMasterArtifact(master); |
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94 } |
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95 |
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96 |
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97 /** |
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98 * Dispatches the operation to the instantiated generator. |
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99 * |
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100 * @param collection The collection. |
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101 */ |
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102 public void setCollection(D4EArtifactCollection collection) { |
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103 generator.setCollection(collection); |
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104 } |
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105 |
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106 |
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107 /** |
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108 * Dispatches the operation to the instantiated generator. |
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109 */ |
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110 @Override |
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111 public void doOut( |
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112 ArtifactAndFacet artifactFacet, |
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113 ThemeDocument attr, |
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114 boolean visible |
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115 ) { |
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116 generator.doOut(artifactFacet, attr, visible); |
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117 } |
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118 |
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119 |
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120 /** |
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121 * This method generates the chart using a concrete ChartGenerator but |
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122 * doesn't write the chart itself to the OutputStream but a Document that |
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123 * contains meta information of the created chart. |
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124 */ |
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125 @Override |
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126 public void generate() |
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127 throws IOException |
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128 { |
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129 logger.debug("ChartInfoGenerator.generate"); |
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130 |
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131 JFreeChart chart = generator.generateChart(); |
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132 |
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133 int[] size = generator.getSize(); |
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134 if (size == null) { |
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135 size = generator.getDefaultSize(); |
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136 } |
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137 |
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138 ChartRenderingInfo info = new ChartRenderingInfo(); |
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139 |
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140 long startTime = System.currentTimeMillis(); |
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141 |
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142 if (USE_NOP_GRAPHICS) { |
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143 BufferedImage image = |
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144 new BufferedImage(size[0], size[1], Transparency.BITMASK); |
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145 |
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146 Graphics2D g2d = image.createGraphics(); |
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147 Graphics2D nop = new NOPGraphics2D(g2d); |
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148 |
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149 chart.draw( |
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150 nop, |
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151 new Rectangle2D.Double(0, 0, size[0], size[1]), |
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152 null, |
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153 info); |
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154 |
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155 nop.dispose(); |
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156 } |
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157 else { |
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158 chart.createBufferedImage( |
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159 size[0], size[1], Transparency.BITMASK, info); |
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160 } |
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161 |
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162 long stopTime = System.currentTimeMillis(); |
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163 |
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164 if (logger.isDebugEnabled()) { |
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165 logger.debug("Rendering info took: " + |
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166 (stopTime-startTime) + "ms"); |
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167 } |
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168 |
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169 |
673
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170 InfoGeneratorHelper helper = new InfoGeneratorHelper(generator); |
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171 Document doc = helper.createInfoDocument(chart, info); |
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172 |
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173 XMLUtils.toStream(doc, out); |
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174 } |
1979
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175 |
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176 |
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177 /** |
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178 * A proxy method which calls <i>generator</i>.getSettings() and returns its |
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179 * return value. |
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180 * |
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181 * @return a Settings object provided by <i>generator</i>. |
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182 */ |
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183 @Override |
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184 public Settings getSettings() { |
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185 return generator.getSettings(); |
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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 * A proxy method which calls <i>generator</i>.setSettings(). |
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191 * |
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192 * @param settings A settings object for the <i>generator</i>. |
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193 */ |
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194 @Override |
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195 public void setSettings(Settings settings) { |
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196 generator.setSettings(settings); |
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197 } |
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198 } |
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199 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |