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java.lang.Objectcom.google.inject.TypeLiteral<T>
public class TypeLiteral<T>
Represents a generic type T
. Java doesn't yet provide a way to
represent generic types, so this class does. Forces clients to create a
subclass of this class which enables retrieval the type information even at
runtime.
For example, to create a type literal for List<String>
, you can
create an empty anonymous inner class:
TypeLiteral<List<String>> list = new TypeLiteral<List<String>>() {};
Assumes that type T
implements Object.equals(java.lang.Object)
and
Object.hashCode()
as value (as opposed to identity) comparison.
Constructor Summary | |
---|---|
protected |
TypeLiteral()
Constructs a new type literal. |
Method Summary | ||
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boolean |
equals(Object o)
|
|
static
|
get(Class<T> type)
Gets type literal for the given Class instance. |
|
static TypeLiteral<?> |
get(Type type)
Gets type literal for the given Type instance. |
|
Type |
getType()
Gets underlying Type instance. |
|
int |
hashCode()
|
|
String |
toString()
|
|
protected Object |
writeReplace()
Returns the canonical form of this type literal for serialization. |
Methods inherited from class java.lang.Object |
---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
---|
protected TypeLiteral()
Clients create an empty anonymous subclass. Doing so embeds the type parameter in the anonymous class's type hierarchy so we can reconstitute it at runtime despite erasure.
Method Detail |
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public final Type getType()
Type
instance.
public final int hashCode()
hashCode
in class Object
public final boolean equals(Object o)
equals
in class Object
public final String toString()
toString
in class Object
public static TypeLiteral<?> get(Type type)
Type
instance.
public static <T> TypeLiteral<T> get(Class<T> type)
Class
instance.
protected final Object writeReplace()
TypeLiteral
, never a subclass. This
prevents problems caused by serializing anonymous types.
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