Examples of ClassFab

org.apache.hivemind.service.ClassFab
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Method bodies look largely like Java. References to java classes must be fully qualified. Several special variables are used:
- $0 first parameter, equivalent to this in Java code (and can't be used when creating a static method)
- $1, $2, ... actual parameters to the method
- $args all the parameters as an Object[]
- $r the return type of the method, typically used as return ($r) .... $r is valid with method that return void. This also handles conversions between wrapper types and primitive types.
- $w conversion from primitive type to wrapper type, used as ($w) foo() where foo() returns a primitive type and a wrapper type is needed
@author Howard Lewis Ship
org.apache.tapestry.ioc.services.ClassFab
.org/products/javassist">Javassist home page.
Method bodies look largely like Java. References to java classes must be fully qualified. Several special variables are used:
- $0 first parameter, equivalent to this in Java code (and can't be used when creating a static method)
- $1, $2, ... actual parameters to the method
- $args all the parameters as an Object[]
- $r the return type of the method, typically used as return ($r) .... $r is valid with method that return void. This also handles conversions between wrapper types and primitive types.
- $w conversion from primitive type to wrapper type, used as ($w) foo() where foo() returns a primitive type and a wrapper type is needed
ClassFab instances are not thread safe.
ClassFab instances are created by a {@link org.apache.tapestry.ioc.services.ClassFactory}.
org.apache.tapestry5.ioc.services.ClassFab
.org/products/javassist">Javassist home page.
Method bodies look largely like Java. References to java classes must be fully qualified. Several special variables are used:
- $0 first parameter, equivalent to this in Java code (and can't be used when creating a static method)
- $1, $2, ... actual parameters to the method
- $args all the parameters as an Object[]
- $r the return type of the method, typically used as return ($r) .... $r is valid with method that return void. This also handles conversions between wrapper types and primitive types.
- $w conversion from primitive type to wrapper type, used as ($w) foo() where foo() returns a primitive type and a wrapper type is needed
ClassFab instances are not thread safe.
ClassFab instances are created by a {@link org.apache.tapestry5.ioc.services.ClassFactory}. @deprecated In 5.3, use {@link PlasticProxyFactory} instead

Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void add_duplicate_method_signature() throws Exception
    {
        ClassFab cf = newClassFab("DupeMethodAdd", Object.class);


        cf.addMethod(Modifier.PUBLIC, new MethodSignature(void.class, "foo", null, null), "{}");


        try
        {
            cf.addMethod(Modifier.PUBLIC, new MethodSignature(void.class, "foo", null, null), "{}");
            unreachable();
        }
        catch (RuntimeException ex)
        {
            assertEquals("Attempt to redefine method void foo() of class DupeMethodAdd.", ex

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void invalid_constructor_body() throws Exception
    {
        ClassFab cf = newClassFab("BadConstructor", Object.class);


        try
        {
            cf.addConstructor(null, null, " woops!");
        }
        catch (RuntimeException ex)
        {
            assertExceptionSubstring(ex, "Unable to add constructor to class BadConstructor");
        }

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void invalid_field() throws Exception
    {
        ClassFab cf = newClassFab("InvalidField", Object.class);


        // You'd think some of these would fail, but the ultimate failure
        // occurs when we create the class.


        cf.addField("a%b", String.class);
        cf.addField("", int.class);


        // Aha! Adding a duplicate fails!


        cf.addField("buffy", int.class);


        try
        {
            cf.addField("buffy", String.class);
            unreachable();
        }
        catch (RuntimeException ex)
        {
            assertEquals(ex.getMessage(), "Unable to add field buffy to class InvalidField: duplicate field: buffy");

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void to_string() throws Exception
    {
        ClassFab cf = newClassFab("FredRunnable", BaseLocatable.class);


        cf.addInterface(Runnable.class);
        cf.addInterface(Serializable.class);


        cf.addField("_map", Map.class);


        cf.addConstructor(new Class[] { Map.class, Runnable.class },
                          new Class[] { IllegalArgumentException.class, DataFormatException.class }, "{ _map = $1; }");


        MethodSignature sig = new MethodSignature(Map.class, "doTheNasty", new Class[] { int.class, String.class },
                                                  new Class[] { InstantiationException.class,
                                                          IllegalAccessException.class });


        cf.addMethod(Modifier.PUBLIC + Modifier.FINAL + Modifier.SYNCHRONIZED, sig, "{ return _map; }");


        String toString = cf.toString();


        assertContains(toString,
                       "public class FredRunnable extends " + BaseLocatable.class.getName() + "\n" + "  implements java.lang.Runnable, java.io.Serializable");


        assertContains(toString, "private java.util.Map _map;");

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void add_noop_method() throws Exception
    {
        ClassFab cf = newClassFab("NoOp", Object.class);
        cf.addInterface(Runnable.class);


        cf.addNoOpMethod(new MethodSignature(void.class, "run", null, null));
        cf.addNoOpMethod(new MethodSignature(int.class, "getInt", null, null));
        cf.addNoOpMethod(new MethodSignature(double.class, "getDouble", null, null));


        Class clazz = cf.createClass();


        Runnable instance = (Runnable) clazz.newInstance();


        instance.run();

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    


    @Test
    public void add_annotation() throws Exception
    {
        final ClassFab cf = newClassFab("AnnotatedClass", Object.class);


        cf.addField("_delegate", AnnotatedService.class);
        cf.addConstructor(new Class[] { AnnotatedService.class }, null, "_delegate = $1;");


        cf.proxyMethodsToDelegate(AnnotatedService.class, "_delegate", "Bla bla");
        cf.copyClassAnnotationsFromDelegate(AnnotatedServiceImpl.class);
        cf.copyMethodAnnotationsFromDelegate(AnnotatedService.class, AnnotatedServiceImpl.class);


        final Class targetClass = cf.createClass();


        final TestAnnotation a = (TestAnnotation) targetClass.getAnnotation(TestAnnotation.class);


        assertNotNull(a);

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void create_simple_bean() throws Exception
    {
        ClassFab cf = newClassFab("TargetBean", Object.class);


        cf.addField("_stringValue", String.class);


        MethodSignature setStringValue = new MethodSignature(void.class, "setStringValue", new Class[] { String.class },
                                                             null);


        cf.addMethod(Modifier.PUBLIC, setStringValue, "_stringValue = $1;");


        MethodSignature getStringValue = new MethodSignature(String.class, "getStringValue", null, null);


        cf.addMethod(Modifier.PUBLIC, getStringValue, "return _stringValue;");


        Class targetClass = cf.createClass();


        Object targetBean = targetClass.newInstance();


        access.set(targetBean, "stringValue", "Fred");

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void add_to_string() throws Exception
    {
        ClassFab cf = newClassFab("ToString", Object.class);


        cf.addToString("ToString Description");


        Class clazz = cf.createClass();


        Object instance = clazz.newInstance();


        assertEquals(instance.toString(), "ToString Description");
    }

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void proxy_methods_to_delegate() throws Exception
    {
        ClassFab cf = newClassFab("Delegator", Object.class);


        cf.addField("_delegate", SampleService.class);
        cf.addConstructor(new Class[] { SampleService.class }, null, "_delegate = $1;");


        cf.proxyMethodsToDelegate(SampleService.class, "_delegate", "<Delegator>");


        SampleService delegate = newMock(SampleService.class);


        Class clazz = cf.createClass();


        SampleService proxy = (SampleService) clazz.getConstructors()[0].newInstance(delegate);


        expect(delegate.primitiveMethod(5)).andReturn(10);

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Examples of org.apache.tapestry5.ioc.services.ClassFab

    }


    @Test
    public void proxy_methods_to_delegate_with_to_string() throws Exception
    {
        ClassFab cf = newClassFab("ToStringDelegator", Object.class);


        cf.addField("_delegate", ToStringService.class);
        cf.addConstructor(new Class[] { ToStringService.class }, null, "_delegate = $1;");


        cf.proxyMethodsToDelegate(ToStringService.class, "_delegate", "<ToStringDelegator>");


        ToStringService delegate = new ToStringService()
        {
            @Override
            public String toString()
            {
                return "ACTUAL TO-STRING";
            }
        };


        Class clazz = cf.createClass();


        ToStringService proxy = (ToStringService) clazz.getConstructors()[0].newInstance(delegate);


        assertEquals(proxy.toString(), "ACTUAL TO-STRING");
    }

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