de.bechte.junit.runners.util
Class ReflectionUtil

java.lang.Object
  de.bechte.junit.runners.util.ReflectionUtil

public final class ReflectionUtil
extends Object

Set of helper methods to retrieve information using Java's reflection API.

Method Summary

static Object	createDeepInstance(Stack<Class<?>> classHierarchy) Returns an instance of the Class, represented by the given class hierarchy.
static Stack<Class<?>>	getClassHierarchy(Class<?> clazz) Returns a Stack of classes, representing the hierarchy of the given Class.
static Object	getEnclosingInstance(Object target) Returns the Object that encloses the given target.

Methods inherited from class java.lang.Object

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

Method Detail

getEnclosingInstance

public static Object getEnclosingInstance(Object target)
                                   throws IllegalAccessException

Returns the Object that encloses the given target. This method returns null if the given target is null or its Class is not a member class.

Parameters:

target - the Object to retrieve the enclosing instance for

Returns:

the enclosing Object of target

Throws:

IllegalArgumentException - If target is null.

IllegalAccessException - An instance of the enclosing class is kept in a private field within the enclosed instance. Accessing the field might throw an IllegalAccessException.

IllegalStateException - If no field containing the enclosing instance can be found.

getClassHierarchy

public static Stack<Class<?>> getClassHierarchy(Class<?> clazz)

Returns a Stack of classes, representing the hierarchy of the given Class.

Parameters:

clazz - the Class to retrieve the hierarchy for

Returns:

the Class hierarchy

createDeepInstance

public static Object createDeepInstance(Stack<Class<?>> classHierarchy)
                                 throws Throwable

Returns an instance of the Class, represented by the given class hierarchy.

Parameters:

classHierarchy - the hierarchy representing a deep class

Returns:

the newly created instance

Throws:

Throwable - if errors occurred during construction of the instance