Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/SQKMChartService.java @ 4460:587b0e82924a
Whitespace cosmetic.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 09 Nov 2012 10:23:20 +0100 |
parents | cf1b769190b7 |
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rev | line source |
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Added service for an overview chart of measuring points in sq relation.
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1 package de.intevation.flys.artifacts.services; |
43e42315ce22
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2 |
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3 import de.intevation.artifactdatabase.DefaultService; |
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4 |
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5 import de.intevation.artifacts.CallMeta; |
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6 import de.intevation.artifacts.GlobalContext; |
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7 import de.intevation.artifacts.Service; |
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8 |
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9 import de.intevation.flys.artifacts.model.SQOverview; |
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10 import de.intevation.flys.artifacts.model.SQOverviewFactory; |
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11 |
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12 import de.intevation.flys.artifacts.resources.Resources; |
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13 |
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14 import de.intevation.flys.backend.SedDBSessionHolder; |
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15 |
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16 import de.intevation.flys.utils.KMIndex; |
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17 |
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18 import java.awt.Color; |
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19 import java.awt.Dimension; |
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20 import java.awt.Transparency; |
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21 |
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22 import java.awt.image.BufferedImage; |
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23 |
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24 import java.io.ByteArrayOutputStream; |
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25 import java.io.IOException; |
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26 |
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Removed superfluous imports.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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27 import java.util.Date; |
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28 import java.util.List; |
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29 |
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30 import javax.imageio.ImageIO; |
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31 |
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32 import org.apache.log4j.Logger; |
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33 |
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34 import org.jfree.chart.ChartFactory; |
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35 import org.jfree.chart.JFreeChart; |
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36 |
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37 import org.jfree.chart.axis.DateAxis; |
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38 |
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39 import org.jfree.chart.plot.PlotOrientation; |
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40 import org.jfree.chart.plot.XYPlot; |
3276
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Removed superfluous imports.
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41 |
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42 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; |
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43 |
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44 import org.jfree.data.xy.XYSeries; |
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45 import org.jfree.data.xy.XYSeriesCollection; |
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46 |
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47 import org.w3c.dom.Document; |
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48 import org.w3c.dom.Element; |
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49 import org.w3c.dom.NodeList; |
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50 |
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51 public class SQKMChartService |
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52 extends DefaultService { |
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53 |
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54 private static final Logger log = |
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cf1b769190b7
SQKMChartService: Fixed wrong logger class.
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55 Logger.getLogger(SQKMChartService.class); |
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56 |
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57 public static final int DEFAULT_WIDTH = 240; |
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58 public static final int DEFAULT_HEIGHT = 180; |
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59 |
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60 public static final String I18N_CHART_LABEL = |
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61 "sq.km.chart.label"; |
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62 |
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63 public static final String DEFAULT_CHART_LABEL = |
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64 "Measuring Points"; |
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65 |
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66 public static final String I18N_CHART_TITLE = |
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67 "sq.km.chart.title"; |
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68 |
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69 public static final String DEFAULT_CHART_TITLE = |
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70 "Measuring points"; |
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71 |
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72 public static final String I18N_KM_AXIS = |
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73 "sq.km.chart.km.axis"; |
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74 |
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75 public static final String DEFAULT_KM_AXIS = |
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76 "km"; |
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77 |
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78 public static final String I18N_DATE_AXIS = |
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79 "sq.km.chart.date.axis"; |
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80 |
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81 public static final String DEFAULT_DATE_AXIS = |
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82 "Date"; |
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83 |
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84 public static final String DEFAULT_FORMAT = "png"; |
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85 |
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86 // TODO: Load fancy image from resources. |
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87 public static final byte [] EMPTY = { |
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88 (byte)0x89, (byte)0x50, (byte)0x4e, (byte)0x47, |
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89 (byte)0x0d, (byte)0x0a, (byte)0x1a, (byte)0x0a, |
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90 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x0d, |
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91 (byte)0x49, (byte)0x48, (byte)0x44, (byte)0x52, |
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92 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x01, |
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93 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x01, |
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94 (byte)0x08, (byte)0x00, (byte)0x00, (byte)0x00, |
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95 (byte)0x00, (byte)0x3a, (byte)0x7e, (byte)0x9b, |
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96 (byte)0x55, (byte)0x00, (byte)0x00, (byte)0x00, |
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97 (byte)0x01, (byte)0x73, (byte)0x52, (byte)0x47, |
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98 (byte)0x42, (byte)0x00, (byte)0xae, (byte)0xce, |
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99 (byte)0x1c, (byte)0xe9, (byte)0x00, (byte)0x00, |
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100 (byte)0x00, (byte)0x09, (byte)0x70, (byte)0x48, |
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101 (byte)0x59, (byte)0x73, (byte)0x00, (byte)0x00, |
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102 (byte)0x0b, (byte)0x13, (byte)0x00, (byte)0x00, |
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103 (byte)0x0b, (byte)0x13, (byte)0x01, (byte)0x00, |
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104 (byte)0x9a, (byte)0x9c, (byte)0x18, (byte)0x00, |
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105 (byte)0x00, (byte)0x00, (byte)0x07, (byte)0x74, |
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106 (byte)0x49, (byte)0x4d, (byte)0x45, (byte)0x07, |
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107 (byte)0xdc, (byte)0x04, (byte)0x04, (byte)0x10, |
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108 (byte)0x30, (byte)0x15, (byte)0x7d, (byte)0x77, |
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109 (byte)0x36, (byte)0x0b, (byte)0x00, (byte)0x00, |
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110 (byte)0x00, (byte)0x08, (byte)0x74, (byte)0x45, |
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111 (byte)0x58, (byte)0x74, (byte)0x43, (byte)0x6f, |
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112 (byte)0x6d, (byte)0x6d, (byte)0x65, (byte)0x6e, |
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113 (byte)0x74, (byte)0x00, (byte)0xf6, (byte)0xcc, |
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114 (byte)0x96, (byte)0xbf, (byte)0x00, (byte)0x00, |
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115 (byte)0x00, (byte)0x0a, (byte)0x49, (byte)0x44, |
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116 (byte)0x41, (byte)0x54, (byte)0x08, (byte)0xd7, |
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117 (byte)0x63, (byte)0xf8, (byte)0x0f, (byte)0x00, |
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118 (byte)0x01, (byte)0x01, (byte)0x01, (byte)0x00, |
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119 (byte)0x1b, (byte)0xb6, (byte)0xee, (byte)0x56, |
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120 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
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121 (byte)0x49, (byte)0x45, (byte)0x4e, (byte)0x44, |
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122 (byte)0xae, (byte)0x42, (byte)0x60, (byte)0x82 |
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123 }; |
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124 |
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125 private static final Output empty() { |
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126 return new Output(EMPTY, "image/png"); |
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127 } |
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128 |
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129 @Override |
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130 public Service.Output process( |
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131 Document data, |
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132 GlobalContext globalContext, |
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133 CallMeta callMeta |
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134 ) { |
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135 log.debug("SQKMChartService.process"); |
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136 |
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137 SedDBSessionHolder.acquire(); |
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138 try { |
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139 return doProcess(data, globalContext, callMeta); |
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140 } |
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141 finally { |
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142 SedDBSessionHolder.HOLDER.get().close(); |
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143 SedDBSessionHolder.release(); |
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144 } |
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145 } |
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146 |
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147 protected Service.Output doProcess( |
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148 Document input, |
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149 GlobalContext globalContext, |
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150 CallMeta callMeta |
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151 ) { |
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152 String river = getRiverName(input); |
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153 Dimension extent = getExtent(input); |
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154 String format = getFormat(input); |
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155 |
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156 if (river == null) { |
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157 log.warn("River invalid."); |
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158 return empty(); |
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159 } |
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160 |
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161 SQOverview overview = SQOverviewFactory.getOverview(river); |
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162 |
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163 if (overview == null) { |
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164 log.warn("No overview found for river '" + river + "'"); |
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165 return empty(); |
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166 } |
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167 |
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168 KMIndex<List<Date>> entries = overview.filter(SQOverview.ACCEPT); |
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169 |
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170 JFreeChart chart = createChart(entries, river, callMeta); |
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171 |
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172 return encode(chart, extent, format); |
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173 } |
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174 |
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175 protected static Output encode( |
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176 JFreeChart chart, |
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177 Dimension extent, |
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178 String format |
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179 ) { |
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180 BufferedImage image = chart.createBufferedImage( |
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181 extent.width, extent.height, |
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182 Transparency.BITMASK, |
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183 null); |
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184 |
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185 ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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186 |
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187 try { |
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188 ImageIO.write(image, format, out); |
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189 } |
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parents:
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190 catch (IOException ioe) { |
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191 log.warn("writing image failed", ioe); |
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192 return empty(); |
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193 } |
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194 |
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195 return new Output(out.toByteArray(), "image/" + format); |
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196 } |
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197 |
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198 protected static JFreeChart createChart( |
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199 KMIndex<List<Date>> entries, |
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200 String river, |
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201 CallMeta callMeta |
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|
202 ) { |
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203 |
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parents:
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204 XYSeriesCollection dataset = new XYSeriesCollection(); |
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205 String key = Resources.format( |
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206 callMeta, I18N_CHART_LABEL, DEFAULT_CHART_LABEL, river); |
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|
207 |
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208 XYSeries series = new XYSeries(key); |
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209 for (KMIndex.Entry<List<Date>> e: entries) { |
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210 double km = e.getKm(); |
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211 List<Date> ds = e.getValue(); |
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212 for (Date d: ds) { |
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213 series.add(km, d.getTime()); |
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|
214 } |
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff
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|
215 } |
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parents:
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|
216 |
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parents:
diff
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|
217 dataset.addSeries(series); |
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218 String title = Resources.format( |
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219 callMeta, I18N_CHART_TITLE, DEFAULT_CHART_TITLE, river); |
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parents:
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|
220 |
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parents:
diff
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|
221 String kmAxis = Resources.getMsg( |
43e42315ce22
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parents:
diff
changeset
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222 callMeta, I18N_KM_AXIS, DEFAULT_KM_AXIS); |
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223 |
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224 String dateAxis = Resources.getMsg( |
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225 callMeta, I18N_DATE_AXIS, DEFAULT_DATE_AXIS); |
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226 |
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227 JFreeChart chart = ChartFactory.createXYLineChart( |
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228 title, |
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229 kmAxis, |
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230 dateAxis, |
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231 null, |
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232 PlotOrientation.VERTICAL, |
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233 true, |
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234 true, |
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235 false); |
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236 |
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237 XYPlot plot = (XYPlot)chart.getPlot(); |
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238 |
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239 DateAxis dA = new DateAxis(); |
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240 plot.setRangeAxis(dA); |
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241 plot.setDataset(0, dataset); |
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242 |
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243 chart.setBackgroundPaint(Color.white); |
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244 plot.setBackgroundPaint(Color.white); |
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245 plot.setDomainGridlinePaint(Color.gray); |
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246 plot.setRangeGridlinePaint(Color.gray); |
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247 plot.setDomainGridlinesVisible(true); |
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248 plot.setRangeGridlinesVisible(true); |
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249 XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer(); |
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250 |
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251 renderer.setSeriesPaint(0, Color.gray); |
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252 renderer.setSeriesLinesVisible(0, false); |
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253 renderer.setSeriesShapesVisible(0, true); |
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254 renderer.setDrawOutlines(true); |
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255 return chart; |
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256 } |
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257 |
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258 |
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259 protected static String getRiverName(Document input) { |
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260 NodeList rivers = input.getElementsByTagName("river"); |
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261 |
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262 if (rivers.getLength() == 0) { |
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263 return null; |
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264 } |
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265 |
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266 String river = ((Element)rivers.item(0)).getAttribute("name"); |
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267 |
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268 return river.length() > 0 ? river : null; |
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269 } |
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270 |
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271 protected static Dimension getExtent(Document input) { |
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272 |
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273 int width = DEFAULT_WIDTH; |
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274 int height = DEFAULT_HEIGHT; |
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275 |
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276 NodeList extents = input.getElementsByTagName("extent"); |
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277 |
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278 if (extents.getLength() > 0) { |
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279 Element element = (Element)extents.item(0); |
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280 String w = element.getAttribute("width"); |
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281 String h = element.getAttribute("height"); |
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282 |
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283 try { |
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284 width = Math.max(1, Integer.parseInt(w)); |
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285 } |
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286 catch (NumberFormatException nfe) { |
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287 log.warn("width '" + w + "' is not a valid."); |
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288 } |
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289 |
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290 try { |
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291 height = Math.max(1, Integer.parseInt(h)); |
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292 } |
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293 catch (NumberFormatException nfe) { |
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294 log.warn("height '" + h + "' is not a valid"); |
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295 } |
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296 } |
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297 |
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298 return new Dimension(width, height); |
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299 } |
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|
300 |
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301 protected static String getFormat(Document input) { |
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302 String format = DEFAULT_FORMAT; |
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303 |
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304 NodeList formats = input.getElementsByTagName("format"); |
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|
305 |
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306 if (formats.getLength() > 0) { |
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307 String type = ((Element)formats.item(0)).getAttribute("type"); |
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308 if (type.length() > 0) { |
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309 format = type; |
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parents:
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|
310 } |
43e42315ce22
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
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|
311 } |
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parents:
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changeset
|
312 |
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313 return format; |
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314 } |
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
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|
315 } |
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parents:
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316 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |