Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/exports/TimeseriesChartGenerator.java @ 2238:23c7c51df772
Some more refactoring in XYChartGenerator and ChartGenerator; implemented necessary stuff in TimeseriesChartGenerator and return new empty instances of timeseries charts.
flys-artifacts/trunk@3885 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Thu, 02 Feb 2012 15:44:13 +0000 |
parents | c2b15d9c0f43 |
children | 7e8e1d5384c0 |
rev | line source |
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1 package de.intevation.flys.exports; |
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3 import java.awt.Color; |
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4 |
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5 import java.util.ArrayList; |
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6 import java.util.HashMap; |
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7 import java.util.List; |
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8 import java.util.Map; |
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9 |
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10 import org.apache.log4j.Logger; |
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11 |
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12 import org.jfree.chart.ChartFactory; |
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13 import org.jfree.chart.JFreeChart; |
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14 import org.jfree.chart.axis.NumberAxis; |
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15 import org.jfree.chart.plot.XYPlot; |
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16 |
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17 import org.jfree.data.Range; |
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18 import org.jfree.data.time.TimeSeriesCollection; |
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19 import org.jfree.data.xy.XYDataset; |
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20 |
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21 |
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22 /** |
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23 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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24 */ |
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25 public abstract class TimeseriesChartGenerator extends ChartGenerator { |
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26 |
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27 |
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28 /** |
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29 * Inner class TimeseriesAxisDataset stores TimeSeriesCollection. |
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30 */ |
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31 public class TimeseriesAxisDataset implements AxisDataset { |
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32 |
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33 protected int axisSymbol; |
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34 |
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35 protected List<TimeSeriesCollection> datasets; |
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36 |
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37 protected Range range; |
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38 |
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39 protected int plotAxisIndex; |
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40 |
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41 |
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42 public TimeseriesAxisDataset(int axisSymbol) { |
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43 this.axisSymbol = axisSymbol; |
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44 this.datasets = new ArrayList<TimeSeriesCollection>(); |
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45 } |
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46 |
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47 |
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48 @Override |
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49 public void addDataset(XYDataset dataset) { |
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50 if (!(dataset instanceof TimeSeriesCollection)) { |
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51 logger.warn("Skip non TimeSeriesCollection dataset."); |
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52 return; |
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53 } |
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54 |
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55 TimeSeriesCollection tsc = (TimeSeriesCollection) dataset; |
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56 |
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57 datasets.add(tsc); |
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58 mergeRanges(tsc); |
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59 } |
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60 |
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61 |
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62 @Override |
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63 public boolean isEmpty() { |
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64 return datasets.isEmpty(); |
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65 } |
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66 |
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67 |
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68 protected void mergeRanges(TimeSeriesCollection dataset) { |
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69 logger.debug("Range after merging: " + range); |
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70 |
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71 Range[] xyRanges = ChartHelper.getRanges(dataset); |
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72 range = Range.combine(range, xyRanges[1]); |
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73 |
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74 logger.debug("Range after merging: " + range); |
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75 } |
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76 |
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77 } // end of TimeseriesAxisDataset class |
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78 |
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79 |
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80 |
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81 private static final Logger logger = |
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82 Logger.getLogger(TimeseriesChartGenerator.class); |
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83 |
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84 |
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85 protected Map<Integer, Range> xRanges; |
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86 |
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87 |
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88 |
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89 /** |
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90 * The default constructor that initializes internal datastructures. |
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91 */ |
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92 public TimeseriesChartGenerator() { |
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93 super(); |
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94 |
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95 xRanges = new HashMap<Integer, Range>(); |
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96 } |
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97 |
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98 |
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99 |
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100 @Override |
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101 public JFreeChart generateChart() { |
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102 logger.info("Generate Timeseries Chart."); |
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103 |
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104 JFreeChart chart = ChartFactory.createTimeSeriesChart( |
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105 getChartTitle(), |
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106 getXAxisLabel(), |
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107 getYAxisLabel(0), |
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108 null, |
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109 true, |
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110 false, |
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111 false); |
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112 |
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113 logger.warn("TODO: IMPLEMENT ME!"); |
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114 |
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115 XYPlot plot = (XYPlot) chart.getPlot(); |
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116 |
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117 chart.setBackgroundPaint(Color.WHITE); |
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118 plot.setBackgroundPaint(Color.WHITE); |
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119 |
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120 addSubtitles(chart); |
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121 addDatasets(plot); |
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122 |
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123 return chart; |
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124 } |
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125 |
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126 |
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127 /** |
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128 * This method creates new instances of TimeseriesAxisDataset. |
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129 * |
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130 * @param idx The symbol for the new TimeseriesAxisDataset. |
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131 */ |
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132 @Override |
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133 protected AxisDataset createAxisDataset(int idx) { |
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134 logger.debug("Create a new AxisDataset for index: " + idx); |
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135 return new TimeseriesAxisDataset(idx); |
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136 } |
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137 |
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138 |
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139 /** |
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140 * Effect: extend range of x axis to include given limits. |
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141 * @param range the given ("minimal") range. |
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142 * @param index index of axis to be merged. |
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143 */ |
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144 @Override |
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145 protected void combineXRanges(Range range, int index) { |
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146 if (range != null) { |
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147 Range old = xRanges.get(index); |
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148 |
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149 if (old != null) { |
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150 range = Range.combine(old, range); |
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151 } |
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152 |
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153 xRanges.put(index, range); |
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154 } |
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155 } |
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156 |
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157 |
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158 protected void addDatasets(XYPlot plot) { |
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159 logger.warn("TODO: IMPLEMENT ME!"); |
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160 } |
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161 } |
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162 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |