Examples of org.apache.tapestry5.PropertyConduit

org.apache.tapestry5.PropertyConduit
Used to read or update the value associated with a property. A PropertyConduit provides access to the annotations on the underlying getter and/or setter methods.

        bean.setA("hello");
        bean.setB(123L);
        bean.setB2(1235L);
        bean.setX(54321L);


        PropertyConduit conduit = source.create(Three.class, "a");
        assertSame(conduit.get(bean), "hello");
    }

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    }


    @Test
    public void null_root_object()
    {
        PropertyConduit conduit = source.create(StringHolderBean.class, "value.get()");


        try
        {
            conduit.get(null);
            unreachable();
        } catch (NullPointerException ex)
        {
            assertEquals(ex.getMessage(), "Root object of property expression 'value.get()' is null.");
        }

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    }


    @Test
    public void null_property_in_chain()
    {
        PropertyConduit conduit = source.create(CompositeBean.class, "simple.lastName");


        CompositeBean bean = new CompositeBean();
        bean.setSimple(null);


        try
        {
            conduit.get(bean);
            unreachable();
        } catch (NullPointerException ex)
        {
            assertMessageContains(ex, "Property 'simple' (within property expression 'simple.lastName', of",
                    ") is null.");

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    }


    @Test
    public void last_term_may_be_null()
    {
        PropertyConduit conduit = source.create(CompositeBean.class, "simple.firstName");


        CompositeBean bean = new CompositeBean();


        bean.getSimple().setFirstName(null);


        assertNull(conduit.get(bean));
    }

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    }


    @Test
    public void field_annotations_are_visible()
    {
        PropertyConduit conduit = source.create(CompositeBean.class, "simple.firstName");


        Validate annotation = conduit.getAnnotation(Validate.class);


        assertNotNull(annotation);


        assertEquals(annotation.value(), "required");
    }

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    }


    @Test
    public void method_invocation_with_integer_arguments()
    {
        PropertyConduit conduit = source.create(EchoBean.class, "echoInt(storedInt, 3)");
        EchoBean bean = new EchoBean();


        for (int i = 0; i < 10; i++)
        {
            bean.setStoredInt(i);
            assertEquals(conduit.get(bean), new Integer(i * 3));
        }
    }

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    }


    @Test
    public void method_invocation_with_double_argument()
    {
        PropertyConduit conduit = source.create(EchoBean.class, "echoDouble(storedDouble, 2.0)");
        EchoBean bean = new EchoBean();


        double value = 22. / 7.;


        bean.setStoredDouble(value);


        assertEquals(conduit.get(bean), new Double(2. * value));
    }

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    }


    @Test
    public void method_invocation_with_string_argument()
    {
        PropertyConduit conduit = source.create(EchoBean.class, "echoString(storedString, 'B4', 'AFTER')");
        EchoBean bean = new EchoBean();


        bean.setStoredString("Moe");


        assertEquals(conduit.get(bean), "B4 - Moe - AFTER");
    }

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    }


    @Test
    public void method_invocation_using_dereference()
    {
        PropertyConduit conduit = source.create(EchoBean.class, "echoString(storedString, stringSource.value, 'beta')");
        EchoBean bean = new EchoBean();


        StringSource source = new StringSource("alpha");


        bean.setStringSource(source);
        bean.setStoredString("Barney");


        assertEquals(conduit.get(bean), "alpha - Barney - beta");
    }

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    }


    @Test
    public void top_level_list()
    {
        PropertyConduit conduit = source.create(EchoBean.class, "[ 1, 2.0, storedString ]");
        EchoBean bean = new EchoBean();


        bean.setStoredString("Lisa");


        List l = (List) conduit.get(bean);


        assertListsEquals(l, new Long(1), new Double(2.0), "Lisa");
    }

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