Class TypeReference<T>
java.lang.Object
edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.type.TypeReference<T>
- All Implemented Interfaces:
Comparable<TypeReference<T>>
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
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Field Summary
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionint
compareTo
(TypeReference<T> o) The only reason we define this method (and require implementation ofComparable
) is to prevent constructing a reference without type information.getType()
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Field Details
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_type
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Constructor Details
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TypeReference
protected TypeReference()
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Method Details
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getType
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compareTo
The only reason we define this method (and require implementation ofComparable
) is to prevent constructing a reference without type information.- Specified by:
compareTo
in interfaceComparable<T>
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