Examples of org.jfree.data.xy.IntervalXYDelegate

org.jfree.data.xy.IntervalXYDelegate
A delegate that handles the specification or automatic calculation of the interval surrounding the x-values in a dataset. This is used to extend a regular {@link XYDataset} to support the {@link IntervalXYDataset}interface.
The decorator pattern was not used because of the several possibly implemented interfaces of the decorated instance (e.g. {@link TableXYDataset}, {@link RangeInfo}, {@link DomainInfo} etc.).
The width can be set manually or calculated automatically. The switch autoWidth allows to determine which behavior is used. The auto width calculation tries to find the smallest gap between two x-values in the dataset. If there is only one item in the series, the auto width calculation fails and falls back on the manually set interval width (which is itself defaulted to 1.0).

    public void testEquals() {
       XYSeries s1 = new XYSeries("Series");
       s1.add(1.2, 3.4);
       XYSeriesCollection c1 = new XYSeriesCollection();
       c1.addSeries(s1);
       IntervalXYDelegate d1 = new IntervalXYDelegate(c1);


       XYSeries s2 = new XYSeries("Series");
       XYSeriesCollection c2 = new XYSeriesCollection();
       s2.add(1.2, 3.4);
       c2.addSeries(s2);
       IntervalXYDelegate d2 = new IntervalXYDelegate(c2);
       
       assertTrue(d1.equals(d2));
       assertTrue(d2.equals(d1));
       
       d1.setAutoWidth(false);
       assertFalse(d1.equals(d2));
       d2.setAutoWidth(false);
       assertTrue(d1.equals(d2));
       
       d1.setIntervalPositionFactor(0.123);
       assertFalse(d1.equals(d2));
       d2.setIntervalPositionFactor(0.123);
       assertTrue(d1.equals(d2));
      
       d1.setFixedIntervalWidth(1.23);
       assertFalse(d1.equals(d2));
       d2.setFixedIntervalWidth(1.23);
       assertTrue(d1.equals(d2));
    }

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    public void testCloning() {        
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.2, 3.4);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        IntervalXYDelegate d1 = new IntervalXYDelegate(c1);
        
        IntervalXYDelegate d2 = null;
        try {
            d2 = (IntervalXYDelegate) 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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    public void testSerialization() {
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.2, 3.4);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        IntervalXYDelegate d1 = new IntervalXYDelegate(c1);
        IntervalXYDelegate d2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);
            out.close();

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    public void testEquals() {
       XYSeries s1 = new XYSeries("Series");
       s1.add(1.2, 3.4);
       XYSeriesCollection c1 = new XYSeriesCollection();
       c1.addSeries(s1);
       IntervalXYDelegate d1 = new IntervalXYDelegate(c1);


       XYSeries s2 = new XYSeries("Series");
       XYSeriesCollection c2 = new XYSeriesCollection();
       s2.add(1.2, 3.4);
       c2.addSeries(s2);
       IntervalXYDelegate d2 = new IntervalXYDelegate(c2);
       
       assertTrue(d1.equals(d2));
       assertTrue(d2.equals(d1));
       
       d1.setAutoWidth(false);
       assertFalse(d1.equals(d2));
       d2.setAutoWidth(false);
       assertTrue(d1.equals(d2));
       
       d1.setIntervalPositionFactor(0.123);
       assertFalse(d1.equals(d2));
       d2.setIntervalPositionFactor(0.123);
       assertTrue(d1.equals(d2));
      
       d1.setFixedIntervalWidth(1.23);
       assertFalse(d1.equals(d2));
       d2.setFixedIntervalWidth(1.23);
       assertTrue(d1.equals(d2));
    }

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    public void testCloning() {        
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.2, 3.4);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        IntervalXYDelegate d1 = new IntervalXYDelegate(c1);
        
        IntervalXYDelegate d2 = null;
        try {
            d2 = (IntervalXYDelegate) 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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    public void testSerialization() {
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.2, 3.4);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        IntervalXYDelegate d1 = new IntervalXYDelegate(c1);
        IntervalXYDelegate d2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);
            out.close();

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