org.glassfish.hk2.utilities.reflection

Class TypeChecker

java.lang.Object

org.glassfish.hk2.utilities.reflection.TypeChecker

public class TypeChecker
extends java.lang.Object

This class contains various utilities for ensuring java type safety

Constructor Summary

Constructors

Constructor and Description
TypeChecker()

Method Summary

Modifier and Type	Method and Description
private static java.lang.reflect.Type	getArrayType(java.lang.reflect.Type type) An array type can be a class that is an array or a GenericArrayType
private static java.lang.Class<?>	getBound(java.lang.reflect.Type[] bounds)
private static java.lang.reflect.TypeVariable<?>	getTypeVariable(java.lang.reflect.Type type)
private static java.lang.reflect.WildcardType	getWildcard(java.lang.reflect.Type type)
private static boolean	isActualType(java.lang.reflect.Type type) An actual type is either a Class or a ParameterizedType
private static boolean	isActualTypeVariableSafe(java.lang.Class<?> actual, java.lang.reflect.TypeVariable<?> tv)
private static boolean	isArrayType(java.lang.reflect.Type type) An array type can be a class that is an array or a GenericArrayType
static boolean	isRawTypeSafe(java.lang.reflect.Type requiredType, java.lang.reflect.Type beanType) Returns true if the given requiredType is safely assignable from the given beanType.
private static boolean	isTypeVariable(java.lang.reflect.Type type)
private static boolean	isTypeVariableTypeVariableSafe(java.lang.reflect.TypeVariable<?> rtv, java.lang.reflect.TypeVariable<?> btv)
private static boolean	isWildcard(java.lang.reflect.Type type)
private static boolean	isWildcardActualSafe(java.lang.reflect.WildcardType wildcard, java.lang.Class<?> actual)
private static boolean	isWildcardTypeVariableSafe(java.lang.reflect.WildcardType wildcard, java.lang.reflect.TypeVariable<?> tv)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TypeChecker

public TypeChecker()

Method Detail

isRawTypeSafe

public static boolean isRawTypeSafe(java.lang.reflect.Type requiredType,
                                    java.lang.reflect.Type beanType)

Returns true if the given requiredType is safely assignable from the given beanType. In otherwords, if requiredType = beanType without any cast

Parameters:

requiredType - The type being assigned into

beanType - the type being assigned

Returns:

true if things are type safe

isTypeVariableTypeVariableSafe

private static boolean isTypeVariableTypeVariableSafe(java.lang.reflect.TypeVariable<?> rtv,
                                                      java.lang.reflect.TypeVariable<?> btv)

isActualTypeVariableSafe

private static boolean isActualTypeVariableSafe(java.lang.Class<?> actual,
                                                java.lang.reflect.TypeVariable<?> tv)

isWildcardTypeVariableSafe

private static boolean isWildcardTypeVariableSafe(java.lang.reflect.WildcardType wildcard,
                                                  java.lang.reflect.TypeVariable<?> tv)

getBound

private static java.lang.Class<?> getBound(java.lang.reflect.Type[] bounds)

isWildcardActualSafe

private static boolean isWildcardActualSafe(java.lang.reflect.WildcardType wildcard,
                                            java.lang.Class<?> actual)

getWildcard

private static java.lang.reflect.WildcardType getWildcard(java.lang.reflect.Type type)

getTypeVariable

private static java.lang.reflect.TypeVariable<?> getTypeVariable(java.lang.reflect.Type type)

isWildcard

private static boolean isWildcard(java.lang.reflect.Type type)

isTypeVariable

private static boolean isTypeVariable(java.lang.reflect.Type type)

isActualType

private static boolean isActualType(java.lang.reflect.Type type)

An actual type is either a Class or a ParameterizedType

Parameters:

type - The type to test

Returns:

true if this is an actual type

isArrayType

private static boolean isArrayType(java.lang.reflect.Type type)

An array type can be a class that is an array or a GenericArrayType

Parameters:

type - The type to test

Returns:

true if this is an actual type

getArrayType

private static java.lang.reflect.Type getArrayType(java.lang.reflect.Type type)

An array type can be a class that is an array or a GenericArrayType

Parameters:

type - The type to test

Returns:

true if this is an actual type