Examples of java.lang.reflect.TypeVariable

java.lang.reflect.TypeVariable
TypeVariable is the common superinterface for type variables of kinds. A type variable is created the first time it is needed by a reflective method, as specified in this package. If a type variable t is referenced by a type (i.e, class, interface or annotation type) T, and T is declared by the nth enclosing class of T (see JLS 8.1.2), then the creation of t requires the resolution (see JVMS 5) of the ith enclosing class of T, for i = 0 to n, inclusive. Creating a type variable must not cause the creation of its bounds. Repeated creation of a type variable has no effect.
Multiple objects may be instantiated at run-time to represent a given type variable. Even though a type variable is created only once, this does not imply any requirement to cache instances representing the type variable. However, all instances representing a type variable must be equal() to each other. As a consequence, users of type variables must not rely on the identity of instances of classes implementing this interface. @param < D> the type of generic declaration that declared theunderlying type variable. @since 1.5

    assertFalse("Should not be bridge method", BridgeMethodResolver.isBridgeMethodFor(bridge, other, typeParameterMap));
  }


  public void testCreateTypeVariableMap() throws Exception {
    Map<String, Class> typeVariableMap = GenericTypeResolver.getTypeVariableMap(MyBar.class);
    TypeVariable barT = findTypeVariable(InterBar.class, "T");
    assertEquals(String.class, typeVariableMap.get(barT));


    typeVariableMap = GenericTypeResolver.getTypeVariableMap(MyFoo.class);
    TypeVariable fooT = findTypeVariable(Foo.class, "T");
    assertEquals(String.class, typeVariableMap.get(fooT));


    typeVariableMap = GenericTypeResolver.getTypeVariableMap(ExtendsEnclosing.ExtendsEnclosed.ExtendsReallyDeepNow.class);
    TypeVariable r = findTypeVariable(Enclosing.Enclosed.ReallyDeepNow.class, "R");
    TypeVariable s = findTypeVariable(Enclosing.Enclosed.class, "S");
    TypeVariable t = findTypeVariable(Enclosing.class, "T");
    assertEquals(Long.class, typeVariableMap.get(r));
    assertEquals(Integer.class, typeVariableMap.get(s));
    assertEquals(String.class, typeVariableMap.get(t));
  }

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    assertEquals(bridgedMethod, BridgeMethodResolver.findBridgedMethod(bridgeMethod));
  }


  public void testSPR2454() throws Exception {
    Map typeVariableMap = GenericTypeResolver.getTypeVariableMap(YourHomer.class);
    TypeVariable variable = findTypeVariable(MyHomer.class, "L");
    assertEquals(AbstractBounded.class, ((ParameterizedType) typeVariableMap.get(variable)).getRawType());
  }

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        } else if (type instanceof WildcardType) {
            WildcardType wType = (WildcardType)type;
            Type[] types = wType.getUpperBounds();
            return getErasure(types[0]);
        } else if (type instanceof TypeVariable) {
            TypeVariable var = (TypeVariable)type;
            Type[] types = var.getBounds();
            return getErasure(types[0]);
        }
        return null;
    }

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        } else if (type instanceof WildcardType) {
            WildcardType wType = (WildcardType)type;
            Type[] types = wType.getUpperBounds();
            return getErasure(types[0]);
        } else if (type instanceof TypeVariable) {
            TypeVariable var = (TypeVariable)type;
            Type[] types = var.getBounds();
            return getErasure(types[0]);
        }
        return null;
    }

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            GenericArrayType gt = (GenericArrayType)cls;
            Type componentType = gt.getGenericComponentType();
            if (componentType instanceof Class) {
                ct = (Class)componentType;
            } else {
                TypeVariable tv = (TypeVariable)componentType;
                Type[] bounds = tv.getBounds();
                if (bounds != null && bounds.length == 1) {
                    if (bounds[0] instanceof Class) {
                        ct = (Class)bounds[0];
                    } else {
                        throw new IllegalArgumentException("Unable to determine type for: " + tv);

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        }
        if (type instanceof TypeVariable) {
            if (parameterizedTypes == null) {
                processParameterizedTypes();
            }
            TypeVariable var = (TypeVariable)type;
            Map<String, Class<?>> mp = parameterizedTypes.get(var.getGenericDeclaration());
            if (mp != null) {
                Class<?> c = parameterizedTypes.get(var.getGenericDeclaration()).get(var.getName());
                if (c != null) {
                    rawClass = c;
                    type = c;
                    part.getMessageInfo().setProperty("parameterized", Boolean.TRUE);
                }

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                ParameterizedType pt = (ParameterizedType)t;
                Type[] args = pt.getActualTypeArguments();
                for (int i = 0; i < args.length; i++) {
                    Type arg = args[i];
                    if (arg instanceof TypeVariable) {
                        TypeVariable var = (TypeVariable)arg;
                        Type[] bounds = var.getBounds();
                        boolean isResolved = false;
                        for (int j = 0; j < bounds.length; j++) {
                            Class<?> cls = InjectionUtils.getRawType(bounds[j]);
                            if (cls != null && cls.isAssignableFrom(expectedType)) {
                                isResolved = true;

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            }


            int i = 0;
            for (Type type : typeArguments)
            {
                TypeVariable typeVariable = typeVariables[i];
                Type[] bounds = typeVariable.getBounds();


                Class<?> clazzBound = (Class<?>) bounds[0];


                if (!clazzBound.isAssignableFrom((Class<?>) type))
                {

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    {
        Asserts.assertNotNull(type, "type parameter can not be null");
        
        if (type instanceof TypeVariable)
        {
            TypeVariable wc = (TypeVariable)type;
            Type[] upper = wc.getBounds();            
            
            
            if(upper.length > 1)
            {
                return false;

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        } else if (type instanceof WildcardType) {
            WildcardType wType = (WildcardType)type;
            Type[] types = wType.getUpperBounds();
            return getErasure(types[0]);
        } else if (type instanceof TypeVariable) {
            TypeVariable var = (TypeVariable)type;
            Type[] types = var.getBounds();
            return getErasure(types[0]);
        }
        return null;
    }

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