Examples of org.jfree.data.general.DefaultPieDataset

org.jfree.data.general.DefaultPieDataset
A default implementation of the {@link PieDataset} interface.

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        PieSectionEntity e1 = new PieSectionEntity(new Rectangle2D.Double(1.0,
                2.0, 3.0, 4.0), new DefaultPieDataset(), 1, 2, "Key",
                "ToolTip", "URL");
        PieSectionEntity e2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);

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    /**
     * Some checks for the getIndex() method.
     */
    public void testGetIndex() {
        DefaultPieDataset d = new DefaultPieDataset();
        d.setValue("A", 1.0);
        d.setValue("B", 2.0);
        assertEquals(0, d.getIndex("A"));
        assertEquals(1, d.getIndex("B"));
        assertEquals(-1, d.getIndex("XX"));


        boolean pass = false;
        try {
            d.getIndex(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);

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    /**
     * Some checks for the getLegendItems() method.
     */
    public void testGetLegendItems() {
        DefaultPieDataset dataset = new DefaultPieDataset();
        dataset.setValue("Item 1", 1.0);
        dataset.setValue("Item 2", 2.0);
        dataset.setValue("Item 3", 0.0);
        dataset.setValue("Item 4", null);


        PiePlot plot = new PiePlot(dataset);
        plot.setIgnoreNullValues(false);
        plot.setIgnoreZeroValues(false);
        LegendItemCollection items = plot.getLegendItems();
        assertEquals(4, items.getItemCount());


        // check that null items are ignored if requested
        plot.setIgnoreNullValues(true);
        items = plot.getLegendItems();
        assertEquals(3, items.getItemCount());


        // check that zero items are ignored if requested
        plot.setIgnoreZeroValues(true);
        items = plot.getLegendItems();
        assertEquals(2, items.getItemCount());


        // check that negative items are always ignored
        dataset.setValue("Item 5", -1.0);
        items = plot.getLegendItems();
        assertEquals(2, items.getItemCount());
    }

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    /**
     * Draws a pie chart where the label generator returns null.
     */
    public void testDrawWithNullLegendLabels() {
        DefaultPieDataset dataset = new DefaultPieDataset();
        dataset.setValue("L1", 12.0);
        dataset.setValue("L2", 11.0);
        JFreeChart chart = ChartFactory.createPieChart("Test", dataset, true,
                false, false);
        PiePlot plot = (PiePlot) chart.getPlot();
        plot.setLegendLabelGenerator(new NullLegendLabelGenerator());
        boolean success = false;

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     * Common test setup.
     */
    protected void setUp() {


        // create a dataset...
        DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("Java", new Double(43.2));
        data.setValue("Visual Basic", new Double(0.0));
        data.setValue("C/C++", new Double(17.5));


        // create the chart...
        this.pieChart = ChartFactory.createPieChart(
            "Pie Chart",  // chart title
            data,         // data

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    /**
     * Some checks for the getSubtitle() method.
     */
    public void testGetSubtitle() {
        DefaultPieDataset dataset = new DefaultPieDataset();
        JFreeChart chart = ChartFactory.createPieChart("title", dataset, true,
                false, false);
        Title t = chart.getSubtitle(0);
        assertTrue(t instanceof LegendTitle);

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    /**
     * Serialize a pie chart, restore it, and check for equality.
     */
    public void testSerialization1() {


        DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("Type 1", 54.5);
        data.setValue("Type 2", 23.9);
        data.setValue("Type 3", 45.8);


        JFreeChart c1 = ChartFactory.createPieChart("Test", data, true, true,
                true);
        JFreeChart c2 = null;

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    /**
     * Serialize a 3D pie chart, restore it, and check for equality.
     */
    public void testSerialization2() {


        DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("Type 1", 54.5);
        data.setValue("Type 2", 23.9);
        data.setValue("Type 3", 45.8);


        JFreeChart c1 = ChartFactory.createPieChart3D("Test", data, true, true,
                true);
        JFreeChart c2 = null;

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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        DefaultPieDataset d1 = new DefaultPieDataset();
        d1.setValue("V1", new Integer(1));
        d1.setValue("V2", null);
        d1.setValue("V3", new Integer(3));
        DefaultPieDataset d2 = null;
        try {
            d2 = (DefaultPieDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));
    }

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    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {


        DefaultPieDataset d1 = new DefaultPieDataset();
        d1.setValue("C1", new Double(234.2));
        d1.setValue("C2", null);
        d1.setValue("C3", new Double(345.9));
        d1.setValue("C4", new Double(452.7));


        DefaultPieDataset d2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);

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