com.google.inject.internal

Class SingletonScope

java.lang.Object

com.google.inject.internal.SingletonScope

All Implemented Interfaces:

Scope

public class SingletonScope
extends Object
implements Scope

One instance per Injector. Also see @Singleton.

Constructor Summary

Constructors

Constructor and Description
SingletonScope()

Method Summary

Modifier and Type	Method and Description
<T> Provider<T>	scope(Key<T> key, Provider<T> creator) Scopes a provider.
String	toString() A short but useful description of this scope.

Methods inherited from class java.lang.Object

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

Constructor Detail

SingletonScope

public SingletonScope()

Method Detail

scope

public <T> Provider<T> scope(Key<T> key,
                             Provider<T> creator)

Description copied from interface: Scope

Scopes a provider. The returned provider returns objects from this scope. If an object does not exist in this scope, the provider can use the given unscoped provider to retrieve one.

Scope implementations are strongly encouraged to override Object.toString() in the returned provider and include the backing provider's toString() output.

Specified by:

scope in interface Scope

Parameters:

key - binding key

creator - locates an instance when one doesn't already exist in this scope.

Returns:

a new provider which only delegates to the given unscoped provider when an instance of the requested object doesn't already exist in this scope

toString

public String toString()

Description copied from interface: Scope

A short but useful description of this scope. For comparison, the standard scopes that ship with guice use the descriptions "Scopes.SINGLETON", "ServletScopes.SESSION" and "ServletScopes.REQUEST".

Specified by:

toString in interface Scope

Overrides:

toString in class Object