public interface Context
Provides an operation for obtaining contextual instances with a particular scope
of any contextual type. Any instance of Context
is called a context object.
The context object is responsible for creating and destroying contextual instances
by calling operations of Contextual
. In particular,
the context object is responsible for destroying any contextual instance it creates by
passing the instance to
Contextual.destroy(Object, CreationalContext)
. A
destroyed instance must not subsequently be returned by get()
.
The context object must pass the same instance of
CreationalContext
to Contextual.destroy()
that it passed to Contextual.create()
when it created the instance.
A custom context object may be registered with the container using
AfterBeanDiscovery.addContext(Context)
.
Modifier and Type | Method and Description |
---|---|
<T> T |
get(Contextual<T> contextual)
Return an existing instance of a certain contextual type or a null value.
|
<T> T |
get(Contextual<T> contextual,
CreationalContext<T> creationalContext)
Return an existing instance of certain contextual type or create a new
instance by calling
Contextual.create(CreationalContext)
and return the new instance. |
Class<? extends Annotation> |
getScope()
Get the scope type of the context object.
|
boolean |
isActive()
Determines if the context object is active.
|
Class<? extends Annotation> getScope()
<T> T get(Contextual<T> contextual, CreationalContext<T> creationalContext)
Contextual.create(CreationalContext)
and return the new instance.T
- the type of contextual typecontextual
- the contextual typecreationalContext
- the context in which the new instance will be createdContextNotActiveException
- if the context is not active<T> T get(Contextual<T> contextual)
T
- the type of the contextual typecontextual
- the contextual typeContextNotActiveException
- if the context is not activeboolean isActive()
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