Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/AbstractChart.java @ 1062:58b4a07db856

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Cach improvement: remove the cached elements of each visited state that is visited while stepping back to a previous state. gnv-artifacts/trunk@1147 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 02 Jun 2010 09:52:39 +0000
parents b1f5f2a8840f
children f953c9a559d8
rev   line source
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3f43392df3f6 Interface and abstract classes for chart creation implemented.
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1 package de.intevation.gnv.chart;
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2
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3 import java.util.Collection;
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4 import java.util.Locale;
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5
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6 import org.jfree.chart.ChartTheme;
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7 import org.jfree.chart.JFreeChart;
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8
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9 /**
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10 * Abstract chart class to define the basic fields used for chart creation.
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11 *
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12 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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13 */
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14 public abstract class AbstractChart
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15 implements Chart
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16 {
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17 /**
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18 * JFreeChart object. Created after {@link #generateChart()} is called.
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19 */
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20 protected JFreeChart chart;
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22 /**
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23 * Field storing the visibility of lines in the chart plot.
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24 */
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25 protected boolean linesVisible;
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27 /**
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28 * Field storing the visibility of points in the chart plot.
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29 */
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30 protected boolean shapesVisible;
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32 /**
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33 * Locale object used for i18n support.
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34 */
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35 protected Locale locale;
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36
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37 /**
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38 * ChartLabels
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39 */
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40 protected ChartLabels labels;
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42 /**
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43 * ChartTheme
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44 */
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45 protected ChartTheme theme;
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47 /**
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48 * Collection which contains a bunch of parameters.
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49 */
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50 protected Collection parameters;
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52 /**
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53 * Collection which contains a bunch of measurements.
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54 */
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55 protected Collection measurements;
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57 /**
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58 * Collection which contains all data objects used to be displayed in the
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59 * chart. It contains different series and different datasets which is not
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60 * very elegant.
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61 */
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62 protected Collection resultSet;
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64 /**
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65 * Collection which contains a bunch of date objects.
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66 */
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67 protected Collection dates;
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69 /**
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70 * Collection which contains a bunch of time gap definitions used to
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71 * detect gaps in timeseries charts.
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72 */
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73 protected Collection timeGaps;
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74
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75 /**
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76 * Abstract method which needs to be implemented by concrete subclasses.
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77 * This method triggers the JFreeChart creation process. After calling this
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78 * method {@link #chart} should be a valid <code>JFreeChart</code> object.
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79 */
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80 public abstract JFreeChart generateChart();
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81 }
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82 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org