Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/BedloadKMChartService.java @ 5627:2d9eb188fa51

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Flys Issue 759 write longer strings and explicitly break the lines This makes the dem hover item layout more robust as it works with different string lengths
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 10 Apr 2013 10:25:33 +0200
parents 58bdf95df5e4
children
rev   line source
3751
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
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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.BedloadOverview;
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32 import de.intevation.flys.artifacts.model.minfo.BedloadOverviewFactory;
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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 BedloadKMChartService extends DefaultService {
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38
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39 private static final long serialVersionUID = 4156704841305086495L;
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40
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41 private static final Logger log =
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42 Logger.getLogger(BedloadKMChartService.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 "bedload.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 "bedload.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 "bedload.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 "bedload.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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102 (byte)0x00, (byte)0x0a, (byte)0x49, (byte)0x44,
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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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parents:
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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 BedloadOverview overview = BedloadOverviewFactory.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(BedloadOverview.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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diff changeset
173
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parents:
diff changeset
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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parents:
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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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parents:
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189 ) {
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diff changeset
190
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191 XYSeriesCollection dataset = new XYSeriesCollection();
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192 String key = Resources.format(
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parents:
diff changeset
193 callMeta, I18N_CHART_LABEL, DEFAULT_CHART_LABEL, river);
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diff changeset
194
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195 XYSeries series = new XYSeries(key);
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parents:
diff changeset
196 for (KMIndex.Entry<List<Date>> e: entries) {
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parents:
diff changeset
197 double km = e.getKm();
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198 List<Date> ds = e.getValue();
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parents:
diff changeset
199 for (Date d: ds) {
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parents:
diff changeset
200 series.add(km, d.getTime());
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parents:
diff changeset
201 }
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
202 }
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
203
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204 dataset.addSeries(series);
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
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diff changeset
205 String title = Resources.format(
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parents:
diff changeset
206 callMeta, I18N_CHART_TITLE, DEFAULT_CHART_TITLE, river);
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parents:
diff changeset
207
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parents:
diff changeset
208 String kmAxis = Resources.getMsg(
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
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parents:
diff changeset
209 callMeta, I18N_KM_AXIS, DEFAULT_KM_AXIS);
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parents:
diff changeset
210
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
211 String dateAxis = Resources.getMsg(
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
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parents:
diff changeset
212 callMeta, I18N_DATE_AXIS, DEFAULT_DATE_AXIS);
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parents:
diff changeset
213
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parents:
diff changeset
214 JFreeChart chart = ChartFactory.createXYLineChart(
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
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parents:
diff changeset
215 title,
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
216 kmAxis,
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parents:
diff changeset
217 dateAxis,
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parents:
diff changeset
218 null,
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
219 PlotOrientation.VERTICAL,
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
220 true,
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
221 true,
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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222 false);
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
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parents:
diff changeset
223
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
224 XYPlot plot = (XYPlot)chart.getPlot();
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parents:
diff changeset
225
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
226 DateAxis dA = new DateAxis();
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
227 plot.setRangeAxis(dA);
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
228 plot.setDataset(0, dataset);
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parents:
diff changeset
229
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parents:
diff changeset
230 chart.setBackgroundPaint(Color.white);
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parents:
diff changeset
231 plot.setBackgroundPaint(Color.white);
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
232 plot.setDomainGridlinePaint(Color.gray);
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parents:
diff changeset
233 plot.setRangeGridlinePaint(Color.gray);
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
234 plot.setDomainGridlinesVisible(true);
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
235 plot.setRangeGridlinesVisible(true);
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
236 XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer();
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parents:
diff changeset
237
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
238 renderer.setSeriesPaint(0, Color.gray);
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
239 renderer.setSeriesLinesVisible(0, false);
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parents:
diff changeset
240 renderer.setSeriesShapesVisible(0, true);
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parents:
diff changeset
241 renderer.setDrawOutlines(true);
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parents:
diff changeset
242 return chart;
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parents:
diff changeset
243 }
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parents:
diff changeset
244
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parents:
diff changeset
245
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parents:
diff changeset
246 protected static String getRiverName(Document input) {
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parents:
diff changeset
247 NodeList rivers = input.getElementsByTagName("river");
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parents:
diff changeset
248
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parents:
diff changeset
249 if (rivers.getLength() == 0) {
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parents:
diff changeset
250 return null;
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parents:
diff changeset
251 }
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parents:
diff changeset
252
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parents:
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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 }
http://dive4elements.wald.intevation.org