Package org.kohsuke.stapler.export

Class TypeUtil

java.lang.Object

org.kohsuke.stapler.export.TypeUtil

public class TypeUtil
extends Object

Type arithmetic code. Taken from the JAXB RI.

Author:

Kohsuke Kawaguchi

Constructor Summary

Constructors

Constructor	Description
TypeUtil()

Method Summary

Modifier and Type	Method	Description
static <T> Class<T>	erasure(Type t)	Returns the runtime representation of the given type.
static Type	getBaseClass(Type type, Class baseType)	Gets the parameterization of the given base type.
static Type	getTypeArgument(Type type, int i)

Methods inherited from class java.lang.Object

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

Constructor Detail

TypeUtil

public TypeUtil()

Method Detail

erasure

public static <T> Class<T> erasure(Type t)

Returns the runtime representation of the given type. This corresponds to the notion of the erasure in JSR-14.

getBaseClass

public static Type getBaseClass(Type type,
                                Class baseType)

Gets the parameterization of the given base type.

For example, given the following

 interface Foo<T> extends List<List<T>> {}
 interface Bar extends Foo<String> {}
 

This method works like this:

 getBaseClass( Bar, List ) = List<List<String>
 getBaseClass( Bar, Foo  ) = Foo<String>
 getBaseClass( Foo<? extends Number>, Collection ) = Collection<List<? extends Number>>
 getBaseClass( ArrayList<? extends BigInteger>, List ) = List<? extends BigInteger>
 

Parameters:

type - The type that derives from baseType

baseType - The class whose parameterization we are interested in.

Returns:

The use of baseType in type. or null if the type is not assignable to the base type.

getTypeArgument

public static Type getTypeArgument(Type type,
                                   int i)