org.jopendocument.util
Class ReflectUtils

java.lang.Object
  org.jopendocument.util.ReflectUtils

public final class ReflectUtils
extends java.lang.Object

Constructor Summary

ReflectUtils()

Method Summary

static <T> java.util.List<java.lang.Class<?>>	getTypeArguments(java.lang.Class<? extends T> childClass, java.lang.Class<T> baseClass) Search for the list of class used to extend/implement a generic class/interface.
static <U> java.util.List<java.lang.Class<?>>	getTypeArguments(U o, java.lang.Class<U> raw)
static <T> java.util.Map<java.lang.reflect.TypeVariable<java.lang.Class<T>>,java.lang.Class<?>>	getTypeArgumentsMap(java.lang.Class<? extends T> childClass, java.lang.Class<T> baseClass) The map of type arguments of baseClass to actual type for childClass.
static <U> boolean	isCastable(U o, java.lang.Class<U> raw, java.lang.Class... typeArgs) Whether o can be casted to raw<typeArgs>.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectUtils

public ReflectUtils()

Method Detail

getTypeArgumentsMap

public static <T> java.util.Map<java.lang.reflect.TypeVariable<java.lang.Class<T>>,java.lang.Class<?>> getTypeArgumentsMap(java.lang.Class<? extends T> childClass,
                                                                                                                           java.lang.Class<T> baseClass)

The map of type arguments of baseClass to actual type for childClass.

Type Parameters:

T - the type of the baseClass.

Parameters:

childClass - the class to test, eg Props.class with Props extends Map.

baseClass - the generic superclass, eg Map.class.

Returns:

a the map, eg {K => String.class, V => null}.

getTypeArguments

public static <T> java.util.List<java.lang.Class<?>> getTypeArguments(java.lang.Class<? extends T> childClass,
                                                                      java.lang.Class<T> baseClass)

Search for the list of class used to extend/implement a generic class/interface.

Type Parameters:

T - the type of the baseClass.

Parameters:

childClass - the class to test, eg Props.class with Props extends Map.

baseClass - the generic superclass, eg Map.class.

Returns:

the list of actual classes w/o the possible nulls (if childClass is generic), never null, eg [Boolean.class].

getTypeArguments

public static <U> java.util.List<java.lang.Class<?>> getTypeArguments(U o,
                                                                      java.lang.Class<U> raw)

isCastable

public static <U> boolean isCastable(U o,
                                     java.lang.Class<U> raw,
                                     java.lang.Class... typeArgs)

Whether o can be casted to raw<typeArgs>.

Type Parameters:

U - type of the superclass.

Parameters:

o - the instance to check, eg new MapOfInt2Boolean().

raw - the generic superclass, eg Map.class.

typeArgs - arguments to raw, eg Integer.class, Boolean.class.

Returns:

whether o is a raw<typeArgs>, eg true : new MapOfInt2Boolean() is a Map<Integer, Boolean>.