js.lang

Class GType

java.lang.Object

js.lang.GType

All Implemented Interfaces:

ParameterizedType, Type

public class GType
extends Object
implements ParameterizedType

Generic type.

Description for terms usage. Be it a generic class definition and a reference, see sample codes. On definition, Box is the class name; in GType class context it is name rawType. The type parameter section, delimited by angle brackets, follows the class name. It specifies the type parameters (also called type variables), in this case T. Type parameters are not represented by GType class.

 class Box<T> {
        private T t;
 }
 

To reference the generic Box class from within your code, you must perform a generic type invocation, which replaces T with some concrete value, such as Integer:

 Box<Integer> integers = new Box<Integer>();
 

The list of type arguments used to reference a generic type is named actualTypeArguments into GType class. Note that a generic type reference, in which type parameters/variables are replaced by concrete type is named parameterized type.

Version:

final

Author:

Iulian Rotaru

Field Summary

Fields

Modifier and Type	Field and Description
private Type[]	actualTypeArguments Actual type arguments used to reference parameterized type.
private Type	rawType Class or interface declaring this parameterized type.
private String	string Cached string representation for this GType instance.

Constructor Summary

Constructors

Constructor and Description
GType(Type rawType, Type... actualTypeArguments) Construct immutable parameterized type instance.

Method Summary

Modifier and Type	Method and Description
Type[]	getActualTypeArguments() Returns an array of Type objects representing the actual type arguments to this type.
Type	getOwnerType() Always returns null since GType is top level class, that is, is not declared as inner class.
Type	getRawType() Returns the Type object representing the class or interface that declared this type.
String	toString() String representation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.reflect.Type

getTypeName

Field Detail

rawType

private final Type rawType

Class or interface declaring this parameterized type. For example, for Map<String, Integer> this field contains java.util.Map.

actualTypeArguments

private final Type[] actualTypeArguments

Actual type arguments used to reference parameterized type. For example, for Map<String, Integer> this field contains java.lang.String and java.lang.Integer.

string

private String string

Cached string representation for this GType instance.

Constructor Detail

GType

public GType(Type rawType,
             Type... actualTypeArguments)

Construct immutable parameterized type instance.

Parameters:

rawType - class or interface declaring this parameterized type,

actualTypeArguments - actual type arguments used to reference parameterized type.

Method Detail

getActualTypeArguments

public Type[] getActualTypeArguments()

Returns an array of Type objects representing the actual type arguments to this type.

Note that in some cases, the returned array be empty. This can occur if this type represents a non-parameterized type nested within a parameterized type.

Specified by:

getActualTypeArguments in interface ParameterizedType

Returns:

an array of Type objects representing the actual type arguments to this type.

See Also:

actualTypeArguments

getOwnerType

public Type getOwnerType()

Always returns null since GType is top level class, that is, is not declared as inner class.

Specified by:

getOwnerType in interface ParameterizedType

getRawType

public Type getRawType()

Returns the Type object representing the class or interface that declared this type.

Specified by:

getRawType in interface ParameterizedType

Returns:

the Type object representing the class or interface that declared this type.

See Also:

rawType

toString

public String toString()

String representation.

Overrides:

toString in class Object