org.hibernate.validator.internal.util.classhierarchy

Class ClassHierarchyHelper

java.lang.Object

org.hibernate.validator.internal.util.classhierarchy.ClassHierarchyHelper

public class ClassHierarchyHelper
extends java.lang.Object

Helper class for dealing with inheritance hierarchies of given types which allows to selectively retrieve elements from such hierarchies, e.g. all super-classes, all implemented interfaces etc.

Author:

Hardy Ferentschik, Gunnar Morling

Method Summary

Modifier and Type	Method and Description
static <T> java.util.Set<java.lang.Class<? super T>>	getDirectlyImplementedInterfaces(java.lang.Class<T> clazz) Gets all interfaces (and recursively their super-interfaces) which the given class directly implements.
static <T> java.util.List<java.lang.Class<? super T>>	getHierarchy(java.lang.Class<T> clazz, Filter... filters) Gets the elements of the hierarchy of the given class which match the given filters.

Methods inherited from class java.lang.Object

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

Method Detail

getHierarchy

public static <T> java.util.List<java.lang.Class<? super T>> getHierarchy(java.lang.Class<T> clazz,
                                                                          Filter... filters)

Gets the elements of the hierarchy of the given class which match the given filters. Classes are added by starting with the class itself and its implemented interfaces. Then its super class and interfaces are added and so on.

Type Parameters:

T - the type of the class

Parameters:

clazz - the class for which to retrieve the hierarchy

filters - filters applying for the search

Returns:

List of hierarchy classes. Will only contain those types matching the given filters. The list contains the given class itself, if it is no proxy class.

getDirectlyImplementedInterfaces

public static <T> java.util.Set<java.lang.Class<? super T>> getDirectlyImplementedInterfaces(java.lang.Class<T> clazz)

Gets all interfaces (and recursively their super-interfaces) which the given class directly implements. Interfaces implemented by super-classes are not contained.

Type Parameters:

T - the type of the class

Parameters:

clazz - the class for which to retrieve the implemented interfaces

Returns:

Set of all interfaces implemented by the class represented by this hierarchy. The empty list is returned if it does not implement any interfaces.