| java.lang.Object | |
| ↳ | com.fasterxml.jackson.core.type.TypeReference<T> |
Class Overview
This generic abstract class is used for obtaining full generics type information
by sub-classing; it must be converted to 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.
Summary
| Fields | |||||||||||
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| _type | |||||||||||
| Protected Constructors | |||||||||||
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| Public Methods | |||||||||||
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The only reason we define this method (and require implementation
of
Comparable) is to prevent constructing a
reference without type information. | |||||||||||
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[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
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From interface
java.lang.Comparable
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Fields
Protected Constructors
protected TypeReference ()
Public Methods
public 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.