Top Description Fields Constructors Methods
org.glassfish.hk2.api

public abstract Class TypeLiteral<T>

extends Object
Class Inheritance
Imports
java.lang.reflect.GenericArrayType, .ParameterizedType, .Type, .WildcardType

Supports inline instantiation of objects that represent parameterized types with actual type parameters. An object that represents any parameterized type may be obtained by subclassing TypeLiteral.
 TypeLiteral<List<String>> stringListType = new TypeLiteral<List<String>>() {};

Field Summary

Modifier and TypeField and Description
private transient Class<T>
rawType

Store the actual raw parameter type.

private transient Type
type

Store the actual type (direct subclass of TypeLiteral).

Constructor Summary

AccessConstructor and Description
protected

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object obj)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

public final Type[]

Returns:

A non-null (but possibly empty) array of types associated with this literal
getParameterTypes
()

Gets the types associated with this literal

public final Class<T>
getRawType()

Returns: the raw type represented by this object

public static Class<?>

Returns:

The base class for the type, or null if there is none (e.g., Wildcard)
getRawType
(Type
The non-null type to analyze
type
)

Gets the base associated class from this type

public final Type
getType()

Returns: the actual type represented by this object

private static Class<?>
getTypeLiteralSubclass(Class<?>
processed class
clazz
)

Return the direct child class that extends TypeLiteral<t>

private static Type

Returns:

the parametrized type of TypeLiteral (aka T)
getTypeParameter
(Class<?>
subClass of TypeLiteral to analyze
typeLiteralSubclass
)

Return the value of the type parameter of TypeLiteral<t>.

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAllwaitwaitwait

Field Detail

rawTypeback to summary
private transient Class<T> rawType

Store the actual raw parameter type.

typeback to summary
private transient Type type

Store the actual type (direct subclass of TypeLiteral).

Constructor Detail

TypeLiteralback to summary
protected TypeLiteral()

Method Detail

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Annotations
@Override
getParameterTypesback to summary
public final Type[] getParameterTypes()

Gets the types associated with this literal

Returns:Type[]

A non-null (but possibly empty) array of types associated with this literal

getRawTypeback to summary
public final Class<T> getRawType()
Returns:Class<T>

the raw type represented by this object

Annotations
@SuppressWarnings:unchecked
getRawTypeback to summary
public static Class<?> getRawType(Type type)

Gets the base associated class from this type

Parameters
type:Type

The non-null type to analyze

Returns:Class<?>

The base class for the type, or null if there is none (e.g., Wildcard)

getTypeback to summary
public final Type getType()
Returns:Type

the actual type represented by this object

getTypeLiteralSubclassback to summary
private static Class<?> getTypeLiteralSubclass(Class<?> clazz)

Return the direct child class that extends TypeLiteral

Parameters
clazz:Class<?>

processed class

getTypeParameterback to summary
private static Type getTypeParameter(Class<?> typeLiteralSubclass)

Return the value of the type parameter of TypeLiteral.

Parameters
typeLiteralSubclass:Class<?>

subClass of TypeLiteral to analyze

Returns:Type

the parametrized type of TypeLiteral (aka T)

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Annotations
@Override
toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Annotations
@Override