io.undertow.util

Class AttachmentKey<T>

java.lang.Object

io.undertow.util.AttachmentKey<T>

Type Parameters:

T - the attachment type

public abstract class AttachmentKey<T>
extends Object

An immutable, type-safe object attachment key. Such a key has no value outside of its object identity.

Method Summary

Modifier and Type	Method and Description
abstract T	cast(Object value) Cast the value to the type of this attachment key.
static <T> AttachmentKey<T>	create(Class<? super T> valueClass) Construct a new simple attachment key.
static <T> AttachmentKey<AttachmentList<T>>	createList(Class<? super T> valueClass) Construct a new list attachment key.

Methods inherited from class java.lang.Object

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

Method Detail

cast

public abstract T cast(Object value)

Cast the value to the type of this attachment key.

Parameters:

value - the value

Returns:

the cast value

create

public static <T> AttachmentKey<T> create(Class<? super T> valueClass)

Construct a new simple attachment key.

Type Parameters:

T - the attachment type

Parameters:

valueClass - the value class

Returns:

the new instance

createList

public static <T> AttachmentKey<AttachmentList<T>> createList(Class<? super T> valueClass)

Construct a new list attachment key.

Type Parameters:

T - the list value type

Parameters:

valueClass - the list value class

Returns:

the new instance