io.datakernel.util

Class ReflectionUtils

java.lang.Object

io.datakernel.util.ReflectionUtils

public final class ReflectionUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static boolean	classHasPublicNoArgConstructor(Class<?> clazz)
static boolean	classHasPublicStaticFactoryMethod(Class<?> clazz, String methodName)
static String	extractFieldNameFromGetter(Method getter)
static String	extractFieldNameFromSetter(Method setter)
static Object	fetchAnnotationElementValue(Annotation annotation, Method element) Returns values if it is not null, otherwise throws exception
static Method[]	filterNonEmptyElements(Annotation annotation)
static String	getAnnotationString(Annotation annotation) Builds string representation of annotation with its elements.
static Duration	getSmoothingWindow(Object instance)
static boolean	isGetter(Method method)
static boolean	isJmxRefreshableStats(Class<?> clazz)
static boolean	isJmxStats(Class<?> clazz)
static boolean	isPrimitiveType(Class<?> clazz)
static boolean	isPrimitiveTypeWrapper(Class<?> clazz)
static boolean	isSetter(Method method)
static boolean	isString(Class<?> clazz)
static boolean	isThrowable(Class<?> clazz)
static void	resetStats(Object instance)
static void	setSmoothingWindow(Object instance, Duration smoothingWindowSeconds)

Methods inherited from class java.lang.Object

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

Method Detail

isJmxStats

public static boolean isJmxStats(Class<?> clazz)

isJmxRefreshableStats

public static boolean isJmxRefreshableStats(Class<?> clazz)

isPrimitiveType

public static boolean isPrimitiveType(Class<?> clazz)

isPrimitiveTypeWrapper

public static boolean isPrimitiveTypeWrapper(Class<?> clazz)

isString

public static boolean isString(Class<?> clazz)

isThrowable

public static boolean isThrowable(Class<?> clazz)

isGetter

public static boolean isGetter(Method method)

extractFieldNameFromGetter

public static String extractFieldNameFromGetter(Method getter)

isSetter

public static boolean isSetter(Method method)

extractFieldNameFromSetter

public static String extractFieldNameFromSetter(Method setter)

classHasPublicNoArgConstructor

public static boolean classHasPublicNoArgConstructor(Class<?> clazz)

classHasPublicStaticFactoryMethod

public static boolean classHasPublicStaticFactoryMethod(Class<?> clazz,
                                                        String methodName)

resetStats

public static void resetStats(Object instance)

setSmoothingWindow

public static void setSmoothingWindow(Object instance,
                                      Duration smoothingWindowSeconds)

getSmoothingWindow

@Nullable
public static Duration getSmoothingWindow(Object instance)

getAnnotationString

public static String getAnnotationString(Annotation annotation)
                                  throws ReflectiveOperationException

Builds string representation of annotation with its elements. The string looks differently depending on the number of elements, that an annotation has. If annotation has no elements, string looks like this : "AnnotationName" If annotation has a single element with the name "value", string looks like this : "AnnotationName(someValue)" If annotation has one or more custom elements, string looks like this : "(key1=value1,key2=value2)"

Parameters:

annotation -

Returns:

String representation of annotation with its elements

Throws:

ReflectiveOperationException

filterNonEmptyElements

public static Method[] filterNonEmptyElements(Annotation annotation)
                                       throws ReflectiveOperationException

Throws:

ReflectiveOperationException

fetchAnnotationElementValue

public static Object fetchAnnotationElementValue(Annotation annotation,
                                                 Method element)
                                          throws ReflectiveOperationException

Returns values if it is not null, otherwise throws exception

Throws:

ReflectiveOperationException