Examples of org.apache.commons.proxy.ProxyFactory$InvokerInvocationHandler

org.apache.commons.proxy.ProxyFactory
A ProxyFactory can be used to create three different "flavors" of proxy objects.
- Delegator - the proxy will delegate to an object provided by an {@link ObjectProvider}
- Interceptor - the proxy will pass each method invocation through an {@link Interceptor}
- Invoker - the proxy will allow an {@link Invoker} to handle all method invocations
Originally, the ProxyFactory class was an interface. However, to allow for future changes to the class without breaking binary or semantic compatibility, it has been changed to a concrete class.

Note: This class uses Java reflection. For more efficient proxies, try using either {@link org.apache.commons.proxy.factory.cglib.CglibProxyFactory CglibProxyFactory} or{@link org.apache.commons.proxy.factory.javassist.JavassistProxyFactory JavassistProxyFactory} instead.
@author James Carman @since 1.0


    public void testExactSignatureMatch()
    {
        final ObjectProvider targetProvider = new ConstantProvider( new LegacyDuck() );
        final DuckTypingInvoker invoker = new DuckTypingInvoker( targetProvider );
        final Duck duck = ( Duck ) new ProxyFactory().createInvokerProxy( invoker, new Class[]{ Duck.class } );
        assertEquals( "Quack!", duck.sayQuack() );
    }

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    public void testNoMatchingMethod()
    {
        final ObjectProvider targetProvider = new ConstantProvider( new LegacyDuck() );
        final DuckTypingInvoker invoker = new DuckTypingInvoker( targetProvider );
        final Goose goose = ( Goose ) new ProxyFactory().createInvokerProxy( invoker, new Class[]{ Goose.class } );
        try
        {
            goose.sayHonk();
            fail( "No matching method should be found." );
        }

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    public void testMismatchingParameterType()
    {
        final ObjectProvider targetProvider = new ConstantProvider( new LegacyDuck() );
        final DuckTypingInvoker invoker = new DuckTypingInvoker( targetProvider );
        final ParameterizedDuck parameterizedDuck = ( ParameterizedDuck ) new ProxyFactory()
                .createInvokerProxy( invoker, new Class[]{ ParameterizedDuck.class } );
        try
        {
            parameterizedDuck.sayQuack("Elmer");
            fail( "No matching method should be found." );

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    public void testTargetHasCompatibleReturnType()
    {
        final ObjectProvider targetProvider = new ConstantProvider( new LegacyDuck() );
        final DuckTypingInvoker invoker = new DuckTypingInvoker( targetProvider );
        final SerializableDuck duck = ( SerializableDuck ) new ProxyFactory().createInvokerProxy( invoker, new Class[]{
                SerializableDuck.class } );
        assertEquals("Quack!", duck.sayQuack() );


    }

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    public void testMismatchingReturnType()
    {
        final ObjectProvider targetProvider = new ConstantProvider( new LegacyDuck() );
        final DuckTypingInvoker invoker = new DuckTypingInvoker( targetProvider );
        final VoidReturnDuck voidDuck = ( VoidReturnDuck ) new ProxyFactory().createInvokerProxy( invoker, new Class[]{
                VoidReturnDuck.class } );
        try
        {
            voidDuck.sayQuack();
            fail( "No matching method should be found." );

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{
    public void testWithSerializableParametersAndReturn()
    {
        final ObjectEchoImpl target = new ObjectEchoImpl();
        ObjectEcho echo =
                (ObjectEcho) new ProxyFactory().createInterceptorProxy(target,
                        new SerializingInterceptor(),
                        new Class[]{ObjectEcho.class});
        final Object originalParameter = "Hello, World!";
        final Object returnValue = echo.echoBack(originalParameter);
        assertNotSame(originalParameter, target.parameter);

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    {
        try
        {
            final ObjectEchoImpl target = new ObjectEchoImpl();
            ObjectEcho echo =
                    (ObjectEcho) new ProxyFactory().createInterceptorProxy(target,
                            new SerializingInterceptor(),
                            new Class[]{ObjectEcho.class});
            final Object originalParameter = new ByteArrayOutputStream();
            echo.echoBack(originalParameter);
            fail("Should not be able to call method with non-serializable parameter type.");

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// Constructors
//**********************************************************************************************************************


    public SyringePlugin(Application application, DependencyProvider dependencyProvider)
    {
        this(application, dependencyProvider, new ProxyFactory());
    }

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Related Classes of org.apache.commons.proxy.ProxyFactory$InvokerInvocationHandler

org.apache.commons.proxy.interceptor.TestSerializingInterceptor

org.apache.commons.proxy.invoker.TestDuckTypingInvoker

org.wicketstuff.syringe.SyringePlugin

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