Examples of org.apache.tapestry.services.MethodSignature

org.apache.tapestry.services.MethodSignature
A representation of a method signature, which consists of its name, modifiers (primarily, visibility), return type, parameter types, and declared exception types.
Types are stored as class names (or primitive names) because the MethodSignature is often used in situations where the actual class has not been loaded yet. When classes are already loaded (such as, for use with {@link org.apache.hivemind.service.ClassFab}), then a different implementation with the same name, {@link org.apache.tapestry.ioc.services.MethodSignature} is used.

    {
        ClassTransformation transformation = newClassTransformation();


        replay();


        MethodSignature sig = new MethodSignature(Modifier.PUBLIC, "void", "myMethod", new String[]
        { MARKUP_WRITER_CLASS_NAME }, null);


        MethodInvocationBuilder invoker = new MethodInvocationBuilder();


        assertEquals(invoker.buildMethodInvocation(sig, transformation), "myMethod(null)");

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    {
        ClassTransformation transformation = newClassTransformation();


        replay();


        MethodSignature sig = new MethodSignature(Modifier.PUBLIC, "void", "myMethod", new String[]
        { MARKUP_WRITER_CLASS_NAME, LOCALE_CLASS_NAME }, null);


        MethodInvocationBuilder invoker = new MethodInvocationBuilder();


        invoker.addParameter(MARKUP_WRITER_CLASS_NAME, "$1");

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        assertEquals(subclassFieldName, parentFieldName);


        // This proves the the field is protected and can be used in subclasses.


        ct.addMethod(new MethodSignature(Modifier.PUBLIC, "java.lang.String", "getValue", null,
                null), "return " + subclassFieldName + ";");


        ct.finish();


        Class transformed = _classPool.toClass(subclassCtClass, _loader);

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    private void replaceAccessToField(InternalClassTransformation ct, String baseName)
    {
        String fieldName = "_" + baseName;
        String readMethodName = "_read_" + baseName;


        MethodSignature readMethodSignature = new MethodSignature(Modifier.PRIVATE,
                STRING_CLASS_NAME, readMethodName, null, null);


        ct.addMethod(readMethodSignature, String.format(
                "throw new RuntimeException(\"read %s\");",
                baseName));


        ct.replaceReadAccess(fieldName, readMethodName);


        String writeMethodName = "_write_" + baseName;


        MethodSignature writeMethodSignature = new MethodSignature(Modifier.PRIVATE, "void",
                writeMethodName, new String[]
                { STRING_CLASS_NAME }, null);
        ct.addMethod(writeMethodSignature, String.format(
                "throw new RuntimeException(\"write %s\");",
                baseName));

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        replay();


        ClassTransformation ct = createClassTransformation(EventHandlerTarget.class, log);


        OnEvent annotation = ct.getMethodAnnotation(new MethodSignature("handler"), OnEvent.class);


        // Check that the attributes of the annotation match the expectation.


        assertEquals(annotation.value(), new String[]
        { "fred", "barney" });

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        ClassTransformation ct = createClassTransformation(ParentClass.class, log);


        try
        {
            ct.getMethodAnnotation(new MethodSignature("foo"), OnEvent.class);
            unreachable();
        }
        catch (IllegalArgumentException ex)
        {
            assertEquals(

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        List<MethodSignature> sigs = ct.findMethodsWithAnnotation(OnEvent.class);


        assertEquals(sigs.size(), 1);


        MethodSignature sig = sigs.get(0);


        assertEquals(
                ct.getMethodIdentifier(sig),
                "org.apache.tapestry.internal.transform.pages.MethodIdentifier.makeWaves(java.lang.String, int[]) (at MethodIdentifier.java:24)");

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    public void no_methods_with_annotation()
    {
        ClassTransformation tf = newClassTransformation();
        MutableComponentModel model = newMutableComponentModel();


        MethodSignature sig = new MethodSignature("someRandomMethod");


        train_findMethods(tf, sig);


        train_getMethodAnnotation(tf, sig, SetupRender.class, null);

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    {
        ClassTransformation tf = newClassTransformation();
        MutableComponentModel model = newMutableComponentModel();
        SetupRender annotation = newSetupRender();


        MethodSignature sig = new MethodSignature("aMethod");


        train_findMethods(tf, sig);


        train_getMethodAnnotation(tf, sig, SetupRender.class, annotation);

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    public void match_on_method_name()
    {
        ClassTransformation tf = newClassTransformation();
        MutableComponentModel model = newMutableComponentModel();


        MethodSignature sig = new MethodSignature("setupRender");


        train_findMethods(tf, sig);


        train_isRootClass(model, false);

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Related Classes of org.apache.tapestry.services.MethodSignature

org.apache.tapestry.internal.services.ApplicationStateWorker

org.apache.tapestry.internal.services.ComponentLifecycleMethodWorkerTest

org.apache.tapestry.internal.services.EnvironmentalWorker

org.apache.tapestry.internal.services.InjectPageWorker

org.apache.tapestry.internal.services.InternalClassTransformationImpl

org.apache.tapestry.internal.services.InternalClassTransformationImplTest

org.apache.tapestry.internal.services.OnEventWorkerTest

org.apache.tapestry.internal.services.ParameterWorker

org.apache.tapestry.internal.services.PersistWorker

org.apache.tapestry.internal.util.MethodInvocationBuilderTest

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