com.jayway.awaitility.reflect

Class WhiteboxImpl

java.lang.Object

com.jayway.awaitility.reflect.WhiteboxImpl

public class WhiteboxImpl
extends Object

Various utilities for accessing internals of a class. Basically a simplified reflection utility. Copied with permission from PowerMock project.

Constructor Summary

Constructors

Constructor and Description
WhiteboxImpl()

Method Summary

Modifier and Type	Method and Description
static <T> T	getByNameAndType(Object object, String fieldName, Class<T> expectedFieldType) getByNameAndType.
static Field	getFieldAnnotatedWith(Object object, Class<? extends Annotation> annotationType) Get field annotated with a particular annotation.
static <T> T	getInternalState(Object object, Class<T> fieldType) Get the value of a field using reflection.
static <T> T	getInternalState(Object object, String fieldName) Get the value of a field using reflection.
static Class<?>	getType(Object object) Gets the type.
static boolean	isClass(Object argument) Checks if is class.
static void	throwExceptionIfFieldWasNotFound(Class<?> type, String fieldName, Field field) Throw exception if field was not found.

Methods inherited from class java.lang.Object

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

Constructor Detail

WhiteboxImpl

public WhiteboxImpl()

Method Detail

getInternalState

public static <T> T getInternalState(Object object,
                                     String fieldName)

Get the value of a field using reflection. This method will iterate through the entire class hierarchy and return the value of the first field named fieldName. If you want to get a specific field value at specific place in the class hierarchy please refer to

Type Parameters:

T - the generic type

Parameters:

object - the object to modify

fieldName - the name of the field

Returns:

the internal state.

getInternalState

public static <T> T getInternalState(Object object,
                                     Class<T> fieldType)

Get the value of a field using reflection. This method will traverse the super class hierarchy until the first field of type fieldType is found. The value of this field will be returned.

Type Parameters:

T - the generic type

Parameters:

object - the object to modify

fieldType - the type of the field

Returns:

the internal state

throwExceptionIfFieldWasNotFound

public static void throwExceptionIfFieldWasNotFound(Class<?> type,
                                                    String fieldName,
                                                    Field field)

Throw exception if field was not found.

Parameters:

type - the type

fieldName - the field name

fieldName - the field name

field - the field

getType

public static Class<?> getType(Object object)

Gets the type.

Parameters:

object - the object

Returns:

The type of the of an object.

getFieldAnnotatedWith

public static Field getFieldAnnotatedWith(Object object,
                                          Class<? extends Annotation> annotationType)

Get field annotated with a particular annotation. This method traverses the class hierarchy when checking for the annotation.

Parameters:

object - The object to look for annotations. Note that if're you're passing an object only instance fields are checked, passing a class will only check static fields.

annotationType - The annotation types to look for

Returns:

A set of all fields containing the particular annotation(s).

Since:

1.3

isClass

public static boolean isClass(Object argument)

Checks if is class.

Parameters:

argument - the argument

Returns:

a boolean.

getByNameAndType

public static <T> T getByNameAndType(Object object,
                                     String fieldName,
                                     Class<T> expectedFieldType)

getByNameAndType.

Type Parameters:

T - a T object.

Parameters:

object - a Object object.

fieldName - a String object.

expectedFieldType - a Class object.

Returns:

a T object.