com.tngtech.jgiven.impl.util
Class ReflectionUtil

java.lang.Object
  com.tngtech.jgiven.impl.util.ReflectionUtil

public class ReflectionUtil
extends Object

Nested Class Summary

static interface	ReflectionUtil.ClassAction
static interface	ReflectionUtil.FieldAction
static interface	ReflectionUtil.FieldPredicate
static interface	ReflectionUtil.MethodAction

Constructor Summary

ReflectionUtil()

Method Summary

static ReflectionUtil.FieldPredicate	allFields()
static com.google.common.base.Optional<Method>	findMethodTransitively(Class<?> clazz, String methodName)
static void	forEachField(Object object, Class<?> clazz, ReflectionUtil.FieldPredicate predicate, ReflectionUtil.FieldAction action) Iterates over all fields of the given class and all its super classes and calls action.act() for the fields that are annotated with the given annotation.
static void	forEachMethod(Object object, Class<?> clazz, Class<? extends Annotation> annotation, ReflectionUtil.MethodAction action) Iterates over all methods of the given class and all its super classes and calls action.act() for the methods that are annotated with the given annotation.
static void	forEachSuperClass(Class<?> clazz, ReflectionUtil.ClassAction action) Iterates over all super classes of the given class (including the class itself) and calls action.act() for these classes.
static List<Object>	getAllNonStaticFieldValuesFrom(Class<?> clazz, Object target, String errorDescription) Returns a List of objects reflecting all the non-static field values declared by the class or interface represented by the given Class object and defined by the given Object.
static List<Method>	getNonStaticMethod(Method[] declaredMethods)
static ReflectionUtil.FieldPredicate	hasAtLeastOneAnnotation(Class<? extends Annotation>... annotation)
static void	invokeMethod(Object object, Method method, String errorDescription)
static void	makeAccessible(AccessibleObject object, String errorDescription)
static <T> T	newInstance(Class<T> value)
static ReflectionUtil.FieldPredicate	nonStaticField()
static void	setField(Field field, Object object, Object value, String errorDescription)
static String	toReadableString(AccessibleObject object)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtil

public ReflectionUtil()

Method Detail

forEachField

public static void forEachField(Object object,
                                Class<?> clazz,
                                ReflectionUtil.FieldPredicate predicate,
                                ReflectionUtil.FieldAction action)

Iterates over all fields of the given class and all its super classes and calls action.act() for the fields that are annotated with the given annotation.

forEachMethod

public static void forEachMethod(Object object,
                                 Class<?> clazz,
                                 Class<? extends Annotation> annotation,
                                 ReflectionUtil.MethodAction action)

Iterates over all methods of the given class and all its super classes and calls action.act() for the methods that are annotated with the given annotation.

forEachSuperClass

public static void forEachSuperClass(Class<?> clazz,
                                     ReflectionUtil.ClassAction action)

Iterates over all super classes of the given class (including the class itself) and calls action.act() for these classes.

hasAtLeastOneAnnotation

public static ReflectionUtil.FieldPredicate hasAtLeastOneAnnotation(Class<? extends Annotation>... annotation)

allFields

public static ReflectionUtil.FieldPredicate allFields()

nonStaticField

public static ReflectionUtil.FieldPredicate nonStaticField()

findMethodTransitively

public static com.google.common.base.Optional<Method> findMethodTransitively(Class<?> clazz,
                                                                             String methodName)

newInstance

public static <T> T newInstance(Class<T> value)

invokeMethod

public static void invokeMethod(Object object,
                                Method method,
                                String errorDescription)

getAllNonStaticFieldValuesFrom

public static List<Object> getAllNonStaticFieldValuesFrom(Class<?> clazz,
                                                          Object target,
                                                          String errorDescription)

Returns a List of objects reflecting all the non-static field values declared by the class or interface represented by the given Class object and defined by the given Object. This includes public, protected, default (package) access, and private fields, but excludes inherited fields. The elements in the List returned are not sorted and are not in any particular order. This method returns an empty List if the class or interface declares no fields, or if the given Class object represents a primitive type, an array class, or void.

Parameters:

clazz - class or interface declaring fields

target - instance of given clazz from which field values should be retrieved

errorDescription - customizable part of logged error message

Returns:

a List containing all the found field values (never null)

setField

public static void setField(Field field,
                            Object object,
                            Object value,
                            String errorDescription)

makeAccessible

public static void makeAccessible(AccessibleObject object,
                                  String errorDescription)

toReadableString

public static String toReadableString(AccessibleObject object)

getNonStaticMethod

public static List<Method> getNonStaticMethod(Method[] declaredMethods)