Class ReflectionUtil

java.lang.Object

io.netty.util.internal.ReflectionUtil

public final class ReflectionUtil
extends Object

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ReflectionUtil()

Method Summary

Modifier and Type	Method	Description
private static Class<?>	fail(Class<?> type, String typeParamName)
private static RuntimeException	handleInaccessibleObjectException(RuntimeException e)
static Class<?>	resolveTypeParameter(Object object, Class<?> parametrizedSuperclass, String typeParamName)	Resolve a type parameter of a class that is a subclass of the given parametrized superclass.
static Throwable	trySetAccessible(AccessibleObject object, boolean checkAccessible)	Try to call AccessibleObject.setAccessible(boolean) but will catch any SecurityException and invalid reference java.lang.reflect.InaccessibleObjectException and return it.

Methods inherited from class Object

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

Constructor Details

ReflectionUtil

private ReflectionUtil()

Method Details

trySetAccessible

public static Throwable trySetAccessible(AccessibleObject object,
 boolean checkAccessible)

Try to call AccessibleObject.setAccessible(boolean) but will catch any SecurityException and

invalid reference

java.lang.reflect.InaccessibleObjectException

and return it. The caller must check if it returns null and if not handle the returned exception.

handleInaccessibleObjectException

private static RuntimeException handleInaccessibleObjectException(RuntimeException e)

fail

private static Class<?> fail(Class<?> type,
 String typeParamName)

resolveTypeParameter

public static Class<?> resolveTypeParameter(Object object,
 Class<?> parametrizedSuperclass,
 String typeParamName)

Resolve a type parameter of a class that is a subclass of the given parametrized superclass.

Parameters:

object - The object to resolve the type parameter for

parametrizedSuperclass - The parametrized superclass

typeParamName - The name of the type parameter to resolve

Returns:

The resolved type parameter

Throws:

IllegalStateException - if the type parameter could not be resolved