Package org.kohsuke.stapler

Class ReflectionUtils

java.lang.Object

org.kohsuke.stapler.ReflectionUtils

public class ReflectionUtils
extends Object

Author:

Kohsuke Kawaguchi

Constructor Summary

Constructors

Constructor	Description
ReflectionUtils()

Method Summary

Modifier and Type	Method	Description
static Object	getVmDefaultValueFor(Class<?> type)	Given the primitive type, returns the VM default value for that type in a boxed form.
static <T> T	ifOverridden(Supplier<T> supplier, Class<?> base, Class<?> derived, String methodName, Class<?>... types)	Calls the given supplier if the method defined on the base type with the given arguments is overridden in the given derived type.
static boolean	isOverridden(Class<?> base, Class<?> derived, String methodName, Class<?>... types)	Checks whether the method defined on the base type with the given arguments is overridden in the given derived type.
static Annotation[]	union(Annotation[] a, Annotation[] b)	Merge two sets of annotations.

Methods inherited from class java.lang.Object

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

Constructor Details

ReflectionUtils

public ReflectionUtils()

Method Details

getVmDefaultValueFor

public static Object getVmDefaultValueFor(Class<?> type)

Given the primitive type, returns the VM default value for that type in a boxed form. For reference types, return null.

union

public static Annotation[] union(Annotation[] a,
 Annotation[] b)

Merge two sets of annotations. If both contains the same annotation, the definition in 'b' overrides the definition in 'a' and shows up in the result

isOverridden

public static boolean isOverridden(@NonNull
 Class<?> base,
 @NonNull
 Class<?> derived,
 @NonNull
 String methodName,
 @NonNull
 Class<?>... types)

Checks whether the method defined on the base type with the given arguments is overridden in the given derived type.

Parameters:

base - The base type.

derived - The derived type.

methodName - The name of the method.

types - The types of the arguments for the method.

Returns:

true when derived provides the specified method other than as inherited from base.

Throws:

IllegalArgumentException - When derived does not derive from base, or when base does not contain the specified method.

ifOverridden

public static <T> T ifOverridden(Supplier<T> supplier,
 @NonNull
 Class<?> base,
 @NonNull
 Class<?> derived,
 @NonNull
 String methodName,
 @NonNull
 Class<?>... types)

Calls the given supplier if the method defined on the base type with the given arguments is overridden in the given derived type.

Parameters:

supplier - The supplier to call if the method is indeed overridden.

base - The base type.

derived - The derived type.

methodName - The name of the method.

types - The types of the arguments for the method.

Returns:

true when derived provides the specified method other than as inherited from base.

Throws:

IllegalArgumentException - When derived does not derive from base, or when base does not contain the specified method.

AbstractMethodError - If the derived class doesn't override the given method.

Since:

2.259