Examples of org.jfree.data.DefaultKeyedValues

org.jfree.data.DefaultKeyedValues
An ordered list of (key, value) items. This class provides a default implementation of the {@link KeyedValues} interface.


    /**
     * Some checks for the getKey() methods.
     */
    public void testGetKey() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        try {
            /* Comparable k = */ v1.getKey(-1);
            assertTrue(false);
        }
        catch (IndexOutOfBoundsException e) {
            // expected
        }
        try {
            /* Comparable k = */ v1.getKey(0);
            assertTrue(false);
        }
        catch (IndexOutOfBoundsException e) {
            // expected
        }
        DefaultKeyedValues v2 = new DefaultKeyedValues();
        v2.addValue("K1", new Integer(1));
        v2.addValue("K2", new Integer(2));
        v2.addValue("K3", new Integer(3));
        assertEquals("K2", v2.getKey(1));
    }

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    /**
     * Some checks for the getKey() methods.
     */
    public void testGetIndex() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        assertEquals(-1, v1.getIndex("K1"));


        DefaultKeyedValues v2 = new DefaultKeyedValues();
        v2.addValue("K1", new Integer(1));
        v2.addValue("K2", new Integer(2));
        v2.addValue("K3", new Integer(3));
        assertEquals(2, v2.getIndex("K3"));
    }

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    /**
     * Some checks for the clone() method.
     */
    public void testCloning() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.addValue("V1", new Integer(1));
        v1.addValue("V2", null);
        v1.addValue("V3", new Integer(3));
        DefaultKeyedValues v2 = null;
        try {
            v2 = (DefaultKeyedValues) v1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(v1 != v2);
        assertTrue(v1.getClass() == v2.getClass());
        assertTrue(v1.equals(v2));
        
        // confirm that the clone is independent of the original
        v2.setValue("V1", new Integer(44));
        assertFalse(v1.equals(v2));
    }

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    /**
     * Check that inserting and retrieving values works as expected.
     */
    public void testInsertAndRetrieve() {


        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("A", new Double(1.0));
        data.addValue("B", new Double(2.0));
        data.addValue("C", new Double(3.0));
        data.addValue("D", null);


        // check key order
        assertEquals(data.getKey(0), "A");
        assertEquals(data.getKey(1), "B");
        assertEquals(data.getKey(2), "C");
        assertEquals(data.getKey(3), "D");


        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(1.0));
        assertEquals(data.getValue("B"), new Double(2.0));
        assertEquals(data.getValue("C"), new Double(3.0));
        assertEquals(data.getValue("D"), null);


        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(1.0));
        assertEquals(data.getValue(1), new Double(2.0));
        assertEquals(data.getValue(2), new Double(3.0));
        assertEquals(data.getValue(3), null);


    }

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    /**
     * Some tests for the removeValue() method.
     */
    public void testRemoveValue() {
        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("A", new Double(1.0));
        data.addValue("B", null);
        data.addValue("C", new Double(3.0));
        data.addValue("D", new Double(2.0));
        assertEquals(1, data.getIndex("B"));
        data.removeValue("B");
        assertEquals(-1, data.getIndex("B"));
        
        boolean pass = true;
        try {
            data.removeValue("XXX");
        }
        catch (Exception e) {
            pass = false;   
        }
        assertTrue(pass);

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    /**
     * Tests sorting of data by key (ascending).
     */
    public void testSortByKeyAscending() {


        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));


        data.sortByKeys(SortOrder.ASCENDING);


        // check key order
        assertEquals(data.getKey(0), "A");
        assertEquals(data.getKey(1), "B");
        assertEquals(data.getKey(2), "C");
        assertEquals(data.getKey(3), "D");


        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));


        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(2.0));
        assertEquals(data.getValue(1), null);
        assertEquals(data.getValue(2), new Double(1.0));
        assertEquals(data.getValue(3), new Double(3.0));


    }

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    /**
     * Tests sorting of data by key (descending).
     */
    public void testSortByKeyDescending() {


        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));


        data.sortByKeys(SortOrder.DESCENDING);


        // check key order
        assertEquals(data.getKey(0), "D");
        assertEquals(data.getKey(1), "C");
        assertEquals(data.getKey(2), "B");
        assertEquals(data.getKey(3), "A");


        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));


        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(3.0));
        assertEquals(data.getValue(1), new Double(1.0));
        assertEquals(data.getValue(2), null);
        assertEquals(data.getValue(3), new Double(2.0));


    }

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    /**
     * Tests sorting of data by value (ascending).
     */
    public void testSortByValueAscending() {


        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));


        data.sortByValues(SortOrder.ASCENDING);


        // check key order
        assertEquals(data.getKey(0), "C");
        assertEquals(data.getKey(1), "A");
        assertEquals(data.getKey(2), "D");
        assertEquals(data.getKey(3), "B");


        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));


        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(1.0));
        assertEquals(data.getValue(1), new Double(2.0));
        assertEquals(data.getValue(2), new Double(3.0));
        assertEquals(data.getValue(3), null);


    }

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    /**
     * Tests sorting of data by key (descending).
     */
    public void testSortByValueDescending() {


        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));


        data.sortByValues(SortOrder.DESCENDING);


        // check key order
        assertEquals(data.getKey(0), "D");
        assertEquals(data.getKey(1), "A");
        assertEquals(data.getKey(2), "C");
        assertEquals(data.getKey(3), "B");


        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));


        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(3.0));
        assertEquals(data.getValue(1), new Double(2.0));
        assertEquals(data.getValue(2), new Double(1.0));
        assertEquals(data.getValue(3), null);


    }

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


        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.addValue("Key 1", new Double(23));
        v1.addValue("Key 2", null);
        v1.addValue("Key 3", new Double(42));


        DefaultKeyedValues v2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(v1);

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