com.atlassian.plugins.rest.common.util

Class ReflectionUtils

java.lang.Object

com.atlassian.plugins.rest.common.util.ReflectionUtils

public class ReflectionUtils
extends Object

A class to simplify some reflection calls.

Method Summary

Modifier and Type	Method and Description
static <T extends Annotation> T	getAnnotation(Class<T> annotationType, AnnotatedElement element) Gets the provided annotation from the provided annotated element, if it exists.
static List<Field>	getDeclaredFields(Class clazz) Returns the result of running Class.getDeclaredFields() on the supplied class, as well as all its super types.
static Object	getFieldValue(Field field, Object object) Gets the value of the field for the given object.
static void	setFieldValue(Field field, Object object, Object value) Sets the value of the field for the given object.

Methods inherited from class java.lang.Object

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

Method Detail

getFieldValue

public static Object getFieldValue(Field field,
                                   Object object)

Gets the value of the field for the given object. It will change the accessibility of the field if necessary. Setting it back to its original value at the end of the method call.

Parameters:

field - the field to read from

object - the object to read the field from

Returns:

the value of the field.

setFieldValue

public static void setFieldValue(Field field,
                                 Object object,
                                 Object value)

Sets the value of the field for the given object. It will change the accessibility of the field if necessary. Setting it back to its original value at the end of the method call.

Parameters:

field - the field to set the value of

object - the object to for which to set the field value.

value - the new value to be set to the field of object.

getDeclaredFields

public static List<Field> getDeclaredFields(Class clazz)

Returns the result of running Class.getDeclaredFields() on the supplied class, as well as all its super types. Fields are ordered in ascending hierarchy order (subclasses first).

Parameters:

clazz -

Returns:

all of the class's fields (including inherited fields).

Since:

v1.0.4

getAnnotation

public static <T extends Annotation> T getAnnotation(@Nonnull
                                                     Class<T> annotationType,
                                                     @Nullable
                                                     AnnotatedElement element)

Gets the provided annotation from the provided annotated element, if it exists.

Will only return a result if the found annotation is from the same class loader as the target type.

Will emit a warning into the log if the annotation is found but has been loaded from a different class loader.

Parameters:

annotationType - The annotation to search for

element - The element to search

Returns:

the element's annotation for the specified annotation type if present, else null

Since:

3.0.10