Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/BedKMChartService.java @ 4221:480de0dbca8e
Extended location input helper.
The locationpicker has now an attribute whether the input is distance or
location to display one or two clickable columns.
Replaced the record click handler with cell click handler.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Tue, 23 Oct 2012 13:17:20 +0200 |
parents | 58bdf95df5e4 |
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rev | line source |
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1 package de.intevation.flys.artifacts.services; |
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2 |
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3 import java.awt.Color; |
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4 import java.awt.Dimension; |
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5 import java.awt.Transparency; |
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6 import java.awt.image.BufferedImage; |
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7 import java.io.ByteArrayOutputStream; |
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8 import java.io.IOException; |
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9 import java.util.Date; |
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10 import java.util.List; |
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11 |
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12 import javax.imageio.ImageIO; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 import org.jfree.chart.ChartFactory; |
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16 import org.jfree.chart.JFreeChart; |
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17 import org.jfree.chart.axis.DateAxis; |
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18 import org.jfree.chart.plot.PlotOrientation; |
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19 import org.jfree.chart.plot.XYPlot; |
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20 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; |
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21 import org.jfree.data.xy.XYSeries; |
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22 import org.jfree.data.xy.XYSeriesCollection; |
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23 import org.w3c.dom.Document; |
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24 import org.w3c.dom.Element; |
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25 import org.w3c.dom.NodeList; |
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26 |
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27 import de.intevation.artifactdatabase.DefaultService; |
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28 import de.intevation.artifacts.CallMeta; |
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29 import de.intevation.artifacts.GlobalContext; |
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30 import de.intevation.artifacts.Service; |
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31 import de.intevation.flys.artifacts.model.minfo.BedOverview; |
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32 import de.intevation.flys.artifacts.model.minfo.BedOverviewFactory; |
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33 import de.intevation.flys.artifacts.resources.Resources; |
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34 import de.intevation.flys.backend.SedDBSessionHolder; |
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35 import de.intevation.flys.utils.KMIndex; |
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36 |
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37 public class BedKMChartService extends DefaultService { |
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38 |
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39 private static final long serialVersionUID = -4946194087923870485L; |
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40 |
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41 private static final Logger log = |
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42 Logger.getLogger(BedKMChartService.class); |
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43 |
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44 public static final int DEFAULT_WIDTH = 240; |
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45 public static final int DEFAULT_HEIGHT = 180; |
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46 |
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47 public static final String I18N_CHART_LABEL = |
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48 "bed.km.chart.label"; |
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49 |
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50 public static final String DEFAULT_CHART_LABEL = |
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51 "Measuring Points"; |
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52 |
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53 public static final String I18N_CHART_TITLE = |
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54 "bed.km.chart.title"; |
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55 |
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56 public static final String DEFAULT_CHART_TITLE = |
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57 "Measuring points"; |
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58 |
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59 public static final String I18N_KM_AXIS = |
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60 "bed.km.chart.km.axis"; |
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61 |
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62 public static final String DEFAULT_KM_AXIS = |
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63 "km"; |
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64 |
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65 public static final String I18N_DATE_AXIS = |
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66 "bed.km.chart.date.axis"; |
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67 |
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68 public static final String DEFAULT_DATE_AXIS = |
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69 "Date"; |
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70 |
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71 public static final String DEFAULT_FORMAT = "png"; |
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72 |
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73 // TODO: Load fancy image from resources. |
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74 public static final byte [] EMPTY = { |
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75 (byte)0x89, (byte)0x50, (byte)0x4e, (byte)0x47, |
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76 (byte)0x0d, (byte)0x0a, (byte)0x1a, (byte)0x0a, |
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77 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x0d, |
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78 (byte)0x49, (byte)0x48, (byte)0x44, (byte)0x52, |
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79 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x01, |
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80 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x01, |
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81 (byte)0x08, (byte)0x00, (byte)0x00, (byte)0x00, |
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82 (byte)0x00, (byte)0x3a, (byte)0x7e, (byte)0x9b, |
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83 (byte)0x55, (byte)0x00, (byte)0x00, (byte)0x00, |
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84 (byte)0x01, (byte)0x73, (byte)0x52, (byte)0x47, |
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85 (byte)0x42, (byte)0x00, (byte)0xae, (byte)0xce, |
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86 (byte)0x1c, (byte)0xe9, (byte)0x00, (byte)0x00, |
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87 (byte)0x00, (byte)0x09, (byte)0x70, (byte)0x48, |
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88 (byte)0x59, (byte)0x73, (byte)0x00, (byte)0x00, |
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89 (byte)0x0b, (byte)0x13, (byte)0x00, (byte)0x00, |
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90 (byte)0x0b, (byte)0x13, (byte)0x01, (byte)0x00, |
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91 (byte)0x9a, (byte)0x9c, (byte)0x18, (byte)0x00, |
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92 (byte)0x00, (byte)0x00, (byte)0x07, (byte)0x74, |
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93 (byte)0x49, (byte)0x4d, (byte)0x45, (byte)0x07, |
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94 (byte)0xdc, (byte)0x04, (byte)0x04, (byte)0x10, |
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95 (byte)0x30, (byte)0x15, (byte)0x7d, (byte)0x77, |
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96 (byte)0x36, (byte)0x0b, (byte)0x00, (byte)0x00, |
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97 (byte)0x00, (byte)0x08, (byte)0x74, (byte)0x45, |
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98 (byte)0x58, (byte)0x74, (byte)0x43, (byte)0x6f, |
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99 (byte)0x6d, (byte)0x6d, (byte)0x65, (byte)0x6e, |
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100 (byte)0x74, (byte)0x00, (byte)0xf6, (byte)0xcc, |
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101 (byte)0x96, (byte)0xbf, (byte)0x00, (byte)0x00, |
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103 (byte)0x41, (byte)0x54, (byte)0x08, (byte)0xd7, |
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104 (byte)0x63, (byte)0xf8, (byte)0x0f, (byte)0x00, |
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105 (byte)0x01, (byte)0x01, (byte)0x01, (byte)0x00, |
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106 (byte)0x1b, (byte)0xb6, (byte)0xee, (byte)0x56, |
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107 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
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108 (byte)0x49, (byte)0x45, (byte)0x4e, (byte)0x44, |
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109 (byte)0xae, (byte)0x42, (byte)0x60, (byte)0x82 |
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110 }; |
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111 |
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112 private static final Output empty() { |
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113 return new Output(EMPTY, "image/png"); |
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114 } |
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115 |
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116 @Override |
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117 public Service.Output process( |
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118 Document data, |
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119 GlobalContext globalContext, |
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120 CallMeta callMeta |
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121 ) { |
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122 log.debug("SQKMChartService.process"); |
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123 |
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124 SedDBSessionHolder.acquire(); |
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125 try { |
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126 return doProcess(data, globalContext, callMeta); |
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127 } |
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128 finally { |
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129 SedDBSessionHolder.HOLDER.get().close(); |
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130 SedDBSessionHolder.release(); |
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131 } |
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132 } |
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133 |
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134 protected Service.Output doProcess( |
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135 Document input, |
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136 GlobalContext globalContext, |
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137 CallMeta callMeta |
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138 ) { |
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139 String river = getRiverName(input); |
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140 Dimension extent = getExtent(input); |
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141 String format = getFormat(input); |
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142 |
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143 if (river == null) { |
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144 log.warn("River invalid."); |
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145 return empty(); |
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146 } |
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147 |
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148 BedOverview overview = BedOverviewFactory.getOverview(river); |
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149 |
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150 if (overview == null) { |
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151 log.warn("No overview found for river '" + river + "'"); |
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152 return empty(); |
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153 } |
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154 |
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155 KMIndex<List<Date>> entries = overview.filter(BedOverview.ACCEPT); |
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156 |
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157 JFreeChart chart = createChart(entries, river, callMeta); |
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158 |
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159 return encode(chart, extent, format); |
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160 } |
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161 |
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162 protected static Output encode( |
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163 JFreeChart chart, |
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164 Dimension extent, |
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165 String format |
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166 ) { |
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167 BufferedImage image = chart.createBufferedImage( |
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168 extent.width, extent.height, |
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169 Transparency.BITMASK, |
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170 null); |
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171 |
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172 ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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173 |
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174 try { |
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175 ImageIO.write(image, format, out); |
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176 } |
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177 catch (IOException ioe) { |
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178 log.warn("writing image failed", ioe); |
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179 return empty(); |
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180 } |
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181 |
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182 return new Output(out.toByteArray(), "image/" + format); |
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183 } |
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184 |
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185 protected static JFreeChart createChart( |
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186 KMIndex<List<Date>> entries, |
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187 String river, |
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188 CallMeta callMeta |
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189 ) { |
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190 |
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191 XYSeriesCollection dataset = new XYSeriesCollection(); |
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192 String key = Resources.format( |
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193 callMeta, I18N_CHART_LABEL, DEFAULT_CHART_LABEL, river); |
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194 |
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195 XYSeries series = new XYSeries(key); |
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196 for (KMIndex.Entry<List<Date>> e: entries) { |
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197 double km = e.getKm(); |
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198 List<Date> ds = e.getValue(); |
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199 for (Date d: ds) { |
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200 series.add(km, d.getTime()); |
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201 } |
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202 } |
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203 |
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204 dataset.addSeries(series); |
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205 String title = Resources.format( |
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206 callMeta, I18N_CHART_TITLE, DEFAULT_CHART_TITLE, river); |
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207 |
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208 String kmAxis = Resources.getMsg( |
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209 callMeta, I18N_KM_AXIS, DEFAULT_KM_AXIS); |
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210 |
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211 String dateAxis = Resources.getMsg( |
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212 callMeta, I18N_DATE_AXIS, DEFAULT_DATE_AXIS); |
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213 |
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214 JFreeChart chart = ChartFactory.createXYLineChart( |
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215 title, |
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216 kmAxis, |
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217 dateAxis, |
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218 null, |
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219 PlotOrientation.VERTICAL, |
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220 true, |
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221 true, |
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222 false); |
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223 |
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224 XYPlot plot = (XYPlot)chart.getPlot(); |
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225 |
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226 DateAxis dA = new DateAxis(); |
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227 plot.setRangeAxis(dA); |
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228 plot.setDataset(0, dataset); |
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229 |
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230 chart.setBackgroundPaint(Color.white); |
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231 plot.setBackgroundPaint(Color.white); |
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232 plot.setDomainGridlinePaint(Color.gray); |
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233 plot.setRangeGridlinePaint(Color.gray); |
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234 plot.setDomainGridlinesVisible(true); |
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235 plot.setRangeGridlinesVisible(true); |
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236 XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer(); |
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237 |
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238 renderer.setSeriesPaint(0, Color.gray); |
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239 renderer.setSeriesLinesVisible(0, false); |
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240 renderer.setSeriesShapesVisible(0, true); |
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241 renderer.setDrawOutlines(true); |
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242 return chart; |
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243 } |
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244 |
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245 |
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246 protected static String getRiverName(Document input) { |
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247 NodeList rivers = input.getElementsByTagName("river"); |
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248 |
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249 if (rivers.getLength() == 0) { |
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250 return null; |
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251 } |
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252 |
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253 String river = ((Element)rivers.item(0)).getAttribute("name"); |
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254 |
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255 return river.length() > 0 ? river : null; |
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256 } |
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257 |
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258 protected static Dimension getExtent(Document input) { |
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259 |
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260 int width = DEFAULT_WIDTH; |
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261 int height = DEFAULT_HEIGHT; |
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262 |
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263 NodeList extents = input.getElementsByTagName("extent"); |
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264 |
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265 if (extents.getLength() > 0) { |
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266 Element element = (Element)extents.item(0); |
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267 String w = element.getAttribute("width"); |
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268 String h = element.getAttribute("height"); |
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269 |
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270 try { |
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271 width = Math.max(1, Integer.parseInt(w)); |
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272 } |
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273 catch (NumberFormatException nfe) { |
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274 log.warn("width '" + w + "' is not a valid."); |
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275 } |
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276 |
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277 try { |
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278 height = Math.max(1, Integer.parseInt(h)); |
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279 } |
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280 catch (NumberFormatException nfe) { |
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281 log.warn("height '" + h + "' is not a valid"); |
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282 } |
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283 } |
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284 |
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285 return new Dimension(width, height); |
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286 } |
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287 |
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288 protected static String getFormat(Document input) { |
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289 String format = DEFAULT_FORMAT; |
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290 |
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291 NodeList formats = input.getElementsByTagName("format"); |
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292 |
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293 if (formats.getLength() > 0) { |
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294 String type = ((Element)formats.item(0)).getAttribute("type"); |
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295 if (type.length() > 0) { |
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296 format = type; |
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297 } |
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298 } |
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299 |
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300 return format; |
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301 } |
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302 } |