io.swagger.v3.core.util

Class ReflectionUtils

java.lang.Object

io.swagger.v3.core.util.ReflectionUtils

public class ReflectionUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
ReflectionUtils()

Method Summary

Modifier and Type	Method and Description
static Method	findMethod(Method methodToFind, Class<?> cls) Searches the method methodToFind in given class cls.
static <A extends Annotation> A	getAnnotation(Class<?> cls, Class<A> annotationClass)
static <A extends Annotation> A	getAnnotation(Method method, Class<A> annotationClass) Returns an annotation by type from a method.
static List<Field>	getDeclaredFields(Class<?> cls) Returns the list of declared fields from the class cls and its superclasses excluding Object class.
static Method	getOverriddenMethod(Method method) Returns overridden method from superclass if it exists.
static Annotation[][]	getParameterAnnotations(Method method)
static <A extends Annotation> List<A>	getRepeatableAnnotations(Class<?> cls, Class<A> annotationClass)
static <A extends Annotation> List<A>	getRepeatableAnnotations(Method method, Class<A> annotationClass) Returns a List of repeatable annotations by type from a method.
static <A extends Annotation> A[]	getRepeatableAnnotationsArray(Class<?> cls, Class<A> annotationClass)
static boolean	hasOverriddenMethods(Method methodToFind, Class<?> cls)
static boolean	isConstructorCompatible(Constructor<?> constructor)
static boolean	isInject(List<Annotation> annotations)
static boolean	isOverriddenMethod(Method methodToFind, Class<?> cls) Checks if the method methodToFind is the overridden method from the superclass or superinterface.
static boolean	isSystemType(com.fasterxml.jackson.databind.JavaType type)
static boolean	isVoid(Type type) Checks if the type is void.
static Class<?>	loadClassByName(String className) Load Class by class name.
static Optional<Object>	safeInvoke(Method method, Object obj, Object... args)
static Type	typeFromString(String type)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtils

public ReflectionUtils()

Method Detail

typeFromString

public static Type typeFromString(String type)

loadClassByName

public static Class<?> loadClassByName(String className)
                                throws ClassNotFoundException

Load Class by class name. If class not found in it's Class loader or one of the parent class loaders - delegate to the Thread's ContextClassLoader

Parameters:

className - Canonical class name

Returns:

Class definition of className

Throws:

ClassNotFoundException

isOverriddenMethod

public static boolean isOverriddenMethod(Method methodToFind,
                                         Class<?> cls)

Checks if the method methodToFind is the overridden method from the superclass or superinterface.

Parameters:

methodToFind - is method to check

cls - is method class

Returns:

true if the method is overridden method

hasOverriddenMethods

public static boolean hasOverriddenMethods(Method methodToFind,
                                           Class<?> cls)

getOverriddenMethod

public static Method getOverriddenMethod(Method method)

Returns overridden method from superclass if it exists. If method was not found returns null.

Parameters:

method - is method to find

Returns:

overridden method from superclass

findMethod

public static Method findMethod(Method methodToFind,
                                Class<?> cls)

Searches the method methodToFind in given class cls. If the method is found returns it, else return null.

Parameters:

methodToFind - is the method to search

cls - is the class or interface where to search

Returns:

method if it is found

isInject

public static boolean isInject(List<Annotation> annotations)

isConstructorCompatible

public static boolean isConstructorCompatible(Constructor<?> constructor)

getDeclaredFields

public static List<Field> getDeclaredFields(Class<?> cls)

Returns the list of declared fields from the class cls and its superclasses excluding Object class. If the field from child class hides the field from superclass, the field from superclass won't be added to the result list. The list is sorted by name to make the output of this method deterministic. See https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html#getFields--

Parameters:

cls - is the processing class

Returns:

list of Fields

getAnnotation

public static <A extends Annotation> A getAnnotation(Method method,
                                                     Class<A> annotationClass)

Returns an annotation by type from a method.

Type Parameters:

A - is the type of annotation

Parameters:

method - is the method to find

annotationClass - is the type of annotation

Returns:

annotation if it is found

getAnnotation

public static <A extends Annotation> A getAnnotation(Class<?> cls,
                                                     Class<A> annotationClass)

getRepeatableAnnotations

public static <A extends Annotation> List<A> getRepeatableAnnotations(Method method,
                                                                      Class<A> annotationClass)

Returns a List of repeatable annotations by type from a method.

Type Parameters:

A - is the type of annotation

Parameters:

method - is the method to find

annotationClass - is the type of annotation

Returns:

List of repeatable annotations if it is found

getRepeatableAnnotations

public static <A extends Annotation> List<A> getRepeatableAnnotations(Class<?> cls,
                                                                      Class<A> annotationClass)

getRepeatableAnnotationsArray

public static <A extends Annotation> A[] getRepeatableAnnotationsArray(Class<?> cls,
                                                                       Class<A> annotationClass)

getParameterAnnotations

public static Annotation[][] getParameterAnnotations(Method method)

isVoid

public static boolean isVoid(Type type)

Checks if the type is void.

Parameters:

type - is the type to check

Returns:

true if the type is void

isSystemType

public static boolean isSystemType(com.fasterxml.jackson.databind.JavaType type)

safeInvoke

public static Optional<Object> safeInvoke(Method method,
                                          Object obj,
                                          Object... args)