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

Package org.apache.tapestry5.ioc.services

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

org.apache.tapestry5.ioc.services.MethodSignature
A representation of a {@link java.lang.reflect.Method}, identifying the name, return type, parameter types and exception types. Actual Method objects are tied to a particular class, and don't compare well with other otherwise identical Methods from other classes or interface; MethodSignatures are distinct from classes and compare well.
Because the intended purpose is to compare methods from interfaces (which are always public and abstract) we don't bother to actually track the modifiers. In addition, at this time, MethodSignature does not distinguish between instance and static methods.
This version of MethodSignature works with loaded classes, and it usually used in the context of {@link org.apache.tapestry5.ioc.services.ClassFab} to create new classes and subclasses. @deprecated In 5.3, to be removed in a later release

    {
        ClassFab cf = newClassFab("SimpleService", Object.class);


        cf.addInterface(SimpleService.class);


        cf.addMethod(Modifier.PUBLIC, new MethodSignature(int.class, "add", new Class[] { int.class, int.class }, null),
                     "return $1 + $2;");


        Class targetClass = cf.createClass();


        SimpleService s = (SimpleService) targetClass.newInstance();

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        cf.addInterface(Runnable.class);


        try
        {
            cf.addMethod(Modifier.PUBLIC, new MethodSignature(void.class, "run", null, null), "fail;");
        }
        catch (RuntimeException ex)
        {
            assertExceptionSubstring(ex, "Unable to add method void run() to class BadMethodBody:");
        }

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    @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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        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; }");

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    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();

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                "org.apache.tapestry5.ioc.internal.services.LineNumberBean.wilma(int[], Double[][][]) (at LineNumberBean.java:34)");
    }


    private void addRunMethod(ClassFab cf)
    {
        cf.addMethod(Modifier.PUBLIC, new MethodSignature(void.class, "run", null, null), " { } ");
    }

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        MethodIterator mi = new MethodIterator(serviceInterface);


        while (mi.hasNext())
        {
            MethodSignature sig = mi.next();


            // ($r) properly handles void methods for us, which keeps this simple.


            String body = format("return ($r) %s.%s($$);", delegateExpression, sig.getName());


            addMethod(Modifier.PUBLIC, sig, body);
        }


        if (!mi.getToString()) addToString(toString);

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    public void addToString(String toString)
    {
        lock.check();


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


        // TODO: Very simple quoting here, will break down if the string itself contains
        // double quotes or various other characters that need escaping.


        addMethod(Modifier.PUBLIC, sig, format("return \"%s\";", toString));

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            filterMethods.add(mi.next());
        }


        while (!serviceMethods.isEmpty())
        {
            MethodSignature ms = serviceMethods.remove(0);


            addBridgeMethod(ms, filterMethods);
        }


        reportExtraFilterMethods(filterMethods);

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    {
        Iterator i = filterMethods.iterator();


        while (i.hasNext())
        {
            MethodSignature ms = (MethodSignature) i.next();


            logger.error(ServiceMessages
                    .extraFilterMethod(ms, filterInterface, serviceInterface));
        }
    }

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