ch.jalu.typeresolver.reference

Class NestedTypeReference<L extends List>

java.lang.Object

ch.jalu.typeresolver.TypeInfo

ch.jalu.typeresolver.reference.NestedTypeReference<L>

Type Parameters:

L - the list type whose type argument will be used to create the wildcard type. Bounded to List as a reminder that the actual type argument of the List is considered, and not the List itself.

public abstract class NestedTypeReference<L extends List>
extends TypeInfo

A type reference class that retrieves the type argument of this class's List type argument, allowing the creation of wildcard types, which cannot be created directly with TypeReference. This class is used as follows:

   TypeInfo typeInfo = new NestedTypeReference<List<?>>() { }; // TypeInfo of '?' wildcard
 

This class is specifically for creating wildcard types from a type declaration, and the resulting wildcard type can be retrieved with wildcardType():

  WildcardType wildcard = new NestedTypeReference<List<? extends Serializable>>() { }.wildcardType();
 

Use TypeReference if it is not needed to nest the type parameter in a dummy List type. Note that wildcard types can also be created programmatically with WildcardTypeImpl.

Constructor Summary

Constructors

Constructor and Description
NestedTypeReference() Constructor.

Method Summary

Modifier and Type	Method and Description
protected Type	inferTypeForNoArgsConstructor() Called in the no-args constructor, allowing to infer the type through some other way.
WildcardType	wildcardType() Convenience method to retrieve the inner class cast to a WildcardType.

Methods inherited from class ch.jalu.typeresolver.TypeInfo

equals, equalTo, getAllTypeInfos, getAllTypes, getComponentType, getEnclosingType, getSafeToReadClass, getType, getTypeArgumentAsClass, getTypeArgumentInfo, hashCode, isAssignableFrom, of, of, resolve, resolveSuperclass, toClass, toString, visitAllTypes

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

NestedTypeReference

public NestedTypeReference()

Constructor. See Javadoc on class for proper usage.

Method Detail

wildcardType

public WildcardType wildcardType()

Convenience method to retrieve the inner class cast to a WildcardType. An exception is thrown if the type is not a wildcard.

Returns:

the wrapped type cast as a wildcard type

Throws:

IllegalStateException - if the wrapped type is not a wildcard type

inferTypeForNoArgsConstructor

protected Type inferTypeForNoArgsConstructor()

Description copied from class: TypeInfo

Called in the no-args constructor, allowing to infer the type through some other way.

Overrides:

inferTypeForNoArgsConstructor in class TypeInfo

Returns:

the type this instance will wrap