Examples of java.beans.Encoder

java.beans.Encoder
An Encoder is a class which can be used to create files or streams that encode the state of a collection of JavaBeans in terms of their public APIs. The Encoder, in conjunction with its persistence delegates, is responsible for breaking the object graph down into a series of Statementss and Expressions which can be used to create it. A subclass typically provides a syntax for these expressions using some human readable form - like Java source code or XML. @since 1.4 @version 1.3 11/15/00 @author Philip Milne

    public void testInstantiate_PrivateGetter() throws Exception {
        MockPersistenceDelegate pd = new MockPersistenceDelegate(new String[] {
                "prop1", "prop6" });
        MockBean b = new MockBean();
        b.setAll("bean1", 2);
        Expression e = pd.instantiate(b, new Encoder());
        assertSame(b, e.getValue());
        assertSame(MockBean.class, e.getTarget());
        assertEquals("new", e.getMethodName());
        assertEquals(2, e.getArguments().length);
        assertSame(b.getProp1(), e.getArguments()[0]);

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    public void testInstantiate_InitialUpperCasePropName() throws Exception {
        String[] props = new String[] { "Prop1", "prop2" };
        MockPersistenceDelegate pd = new MockPersistenceDelegate(props);
        MockBean b = new MockBean();
        b.setAll("bean1", 2);
        Expression e = pd.instantiate(b, new Encoder());
        assertSame(b, e.getValue());
        assertSame(MockBean.class, e.getTarget());
        assertEquals("new", e.getMethodName());
        assertEquals(2, e.getArguments().length);
        assertSame(b.getProp1(), e.getArguments()[0]);

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     */
    public void testInstantiate_NotRegularGetter() throws Exception {
        MockPersistenceDelegate pd = new MockPersistenceDelegate(
                new String[] { "prop" });
        MockFoo2 b = new MockFoo2(2);
        Expression e = pd.instantiate(b, new Encoder());


        assertSame(b, e.getValue());
        assertSame(MockFoo2.class, e.getTarget());
        assertEquals("new", e.getMethodName());
        assertEquals(1, e.getArguments().length);

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    public void testInstantiate_NPE() {


        try {
            testDefaultPersistenceDelegate obj = new testDefaultPersistenceDelegate();
            obj.initialize(Object.class, null, new Object(), new Encoder());
            fail("NullPointerException should be thrown");
        } catch (NullPointerException e) {
            // expected
        }
    }

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        bean1.setValueCalled = false;
        bean2.setValueCalled = false;


        MockPersistenceDelegate mockPersistenceDelegate = new MockPersistenceDelegate();
        mockPersistenceDelegate.initialize(MockBean3.class, bean1, bean2,
                new Encoder());
        assertEquals("bean1", bean1.getValue());
        assertEquals("bean2", bean2.getValue());
        assertFalse(bean1.setValueCalled);
        assertFalse(bean2.setValueCalled);
    }

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    /*
     * Tests initialize() with null class.
     */
    public void testInitialize_NullClass() {
        MockPersistenceDelegate pd = new MockPersistenceDelegate();
        Encoder enc = new Encoder();
        Object o1 = new Object();
        Object o2 = new Object();
        // enc.setPersistenceDelegate(MockFooStop.class,
        // new MockPersistenceDelegate());
        try {
            enc.setExceptionListener(new ExceptionListener() {
                public void exceptionThrown(Exception e) {
                    CallVerificationStack.getInstance().push(e);
                }
            });
            pd.initialize(null, o1, o2, enc);

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    /*
     * Tests initialize() with null old and new instances.
     */
    public void testInitialize_NullInstances() {
        MockPersistenceDelegate pd = new MockPersistenceDelegate();
        Encoder enc = new Encoder();
        MockFoo b = new MockFoo();
        b.setName("myName");
        // enc.setPersistenceDelegate(MockFooStop.class,
        // new MockPersistenceDelegate());
        enc.setExceptionListener(new ExceptionListener() {
            public void exceptionThrown(Exception e) {
                CallVerificationStack.getInstance().push(e);
            }
        });
        try {

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    /*
     * Tests array persistence delegate
     */
    public void testArrayPD_Normal() {
        Encoder enc = new MockEncoder();
        int[] ia = new int[] { 1 };
        PersistenceDelegate pd = enc.getPersistenceDelegate(ia.getClass());
        pd.writeObject(ia, enc);
    }

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        // TBD
    }


    public void testInstantiate_Normal() throws Exception {
        Object obj = new int[] { 1, 2, 3 };
        Expression exp = pd.instantiate(obj, new Encoder());
        assertSame(obj, exp.getValue());
        assertSame(Array.class, exp.getTarget());
        assertEquals("newInstance", exp.getMethodName());
        assertEquals(2, exp.getArguments().length);
        assertSame(Integer.TYPE, exp.getArguments()[0]);

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    public void testInitialize() {
        pd.initialize(null, null, null, null);
    }


    public void testInstantiate_Normal() throws Exception {
        Expression exp = pd.instantiate("str", new Encoder());


        assertSame("str", exp.getValue());
        assertSame(String.class, exp.getTarget());
        assertEquals("new", exp.getMethodName());
        assertEquals(1, exp.getArguments().length);

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Test4950122

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