public abstract class TypeReference<T> extends Object implements Comparable<TypeReference<T>>
ResolvedType
implementation
(implemented by JavaType
from "databind" bundle) to be used.
Class is based on ideas from
http://gafter.blogspot.com/2006/12/super-type-tokens.html,
Additional idea (from a suggestion made in comments of the article)
is to require bogus implementation of Comparable
(any such generic interface would do, as long as it forces a method
with generic type to be implemented).
to ensure that a Type argument is indeed given.
Usage is by sub-classing: here is one way to instantiate reference
to generic type List<Integer>
:
TypeReference ref = new TypeReference<List<Integer>>() { };which can be passed to methods that accept TypeReference, or resolved using
TypeFactory
to obtain ResolvedType
.Modifier | Constructor and Description |
---|---|
protected |
TypeReference() |
Modifier and Type | Method and Description |
---|---|
int |
compareTo(TypeReference<T> o)
The only reason we define this method (and require implementation
of
Comparable ) is to prevent constructing a
reference without type information. |
Type |
getType() |
protected final Type _type
public Type getType()
public int compareTo(TypeReference<T> o)
Comparable
) is to prevent constructing a
reference without type information.compareTo
in interface Comparable<TypeReference<T>>
Copyright © 2016 JBoss by Red Hat. All rights reserved.