Constructor Detail

• ReflectionUtil

  public ReflectionUtil()

Method Detail

• checkTypeParameterIsAssignable

  public static <T,U> void checkTypeParameterIsAssignable(Class<T> paramDefiningClass1,
                                          String paramName1,
                                          T object1,
                                          Class<U> paramDefiningClass2,
                                          String paramName2,
                                          U object2)
                                             throws ResourceInitializationException

  Checks that the given type parameters of the given objects are compatible. Type parameters are identified by providing the class in which the type parameter is defined, and the declared name of the type parameter. Throws a ResourceInitializationException if the type parameters are not compatible.

  Type Parameters:

  T - Type of the class declaring the first type parameter

  U - Type of the class declaring the second type parameter

  Parameters:

  paramDefiningClass1 - The class declaring the first type parameter

  paramName1 - The declared name of the first type parameter

  object1 - The target object

  paramDefiningClass2 - The class declaring the second type parameter

  paramName2 - The declared name of the second type parameter

  object2 - The source object

  Throws:

  ResourceInitializationException

• checkTypeParametersAreEqual

  public static <T,U,E extends Exception> void checkTypeParametersAreEqual(Class<T> paramDefiningClass1,
                                                           String paramName1,
                                                           T object1,
                                                           Class<U> paramDefiningClass2,
                                                           String paramName2,
                                                           U object2,
                                                           Class<E> exceptionClass)
                                          throws E extends Exception

  Checks that the given type parameters of the given objects are exactly equal. Type parameters are identified by providing the class in which the type parameter is defined, and the declared name of the type parameter. Throws an instance of the given exception class if type parameters are not exactly equal.

  Type Parameters:

  T - Type of the class declaring the first type parameter

  U - Type of the class declaring the second type parameter

  Parameters:

  paramDefiningClass1 - The class declaring the first type parameter

  paramName1 - The declared name of the first type parameter

  object1 - The target object

  paramDefiningClass2 - The class declaring the second type parameter

  paramName2 - The declared name of the second type parameter

  object2 - The source object

  Throws:

  E extends Exception

• getTypeArgument

  public static <T> Type getTypeArgument(Class<T> genericType,
                         String typeParameterName,
                         T obj)

• getTypeArguments

  public static Map<String,Type> getTypeArguments(Class<?> genericType,
                                  Object obj)

  Try to find the instantiation of all of genericTypes type parameters in objs class.

  Parameters:

  genericType - the generic supertype of objs class

  obj - an instantiation of a subclass of genericType. All of genericTypes type parameters must have been instantiated in the inheritance hierarchy.

  Returns:

  a map of genericTypes type parameters (their name in the source code) to the type they are instantiated as in obj

• isAssignableFrom

  public static boolean isAssignableFrom(Type type1,
                         Type type2)

• uncheckedCast

  public static <T> T uncheckedCast(Object o)

  Perform an unchecked cast based on a type parameter.

  Type Parameters:

  T - The type to which the object should be cast.

  Parameters:

  o - The object.

  Returns:

  The object, cast to the given type.