Class NoneScopelet

java.lang.Object

org.microbean.scopelet.Scopelet<NoneScopelet>

org.microbean.scopelet.NoneScopelet

All Implemented Interfaces:

AutoCloseable, Constable, Aggregate, Factory<NoneScopelet>

public class NoneScopelet
extends Scopelet<NoneScopelet>
implements Constable

A Scopelet implementation that does not cache objects at all.

Author:

Laird Nelson

Field Summary

Fields inherited from interface Aggregate

EMPTY_ASSIGNMENTS, EMPTY_DEPENDENCIES

Constructor Summary

Constructors

Constructor	Description
NoneScopelet()	Creates a new NoneScopelet.

Method Summary

Modifier and Type	Method	Description
Optional<? extends ConstantDesc>	describeConstable()
<I> I	instance(Object ignoredBeanId, Factory<I> factory, Creation<I> creation)	Checks to see if this Scopelet is active and then returns a contextual instance created by the supplied Factory.

Methods inherited from class Scopelet

active, close, closed, create, destroy, destroys, fireScopeletDestroyed, fireScopeletDestroying, fireScopeletInitialized, remove, removes, singleton

Methods inherited from class Object

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

Methods inherited from interface Aggregate

assign, dependencies

Constructor Details

NoneScopelet

public NoneScopelet()

Creates a new NoneScopelet.

Method Details

instance

public <I> I instance(Object ignoredBeanId,
 Factory<I> factory,
 Creation<I> creation)

Checks to see if this Scopelet is active and then returns a contextual instance created by the supplied Factory.

This method (and its overrides) may return null.

If the supplied Factory is null, this method will (and its overrides must) return null.

Specified by:

instance in class Scopelet<NoneScopelet>

Type Parameters:

I - the type of contextual instance

Parameters:

ignoredBeanId - an identifier; ignored by the default implementation; may be null

factory - a Factory; may be null in which case null will and must be returned

creation - a Creation, typically the one in effect that is causing this method to be invoked in the first place; may be null; most commonly also an instance of DestructorRegistry

Returns:

a contextual instance, or null

Throws:

InactiveScopeletException - if this Scopelet is not active

ClassCastException - if destruction is called for, creation is non-null, and creation does not implement Destruction, a requirement of its contract

See Also:

• DestructorRegistry
• Creation
• Destruction
• Factory.destroys()

describeConstable

public Optional<? extends ConstantDesc> describeConstable()

Specified by:

describeConstable in interface Constable

Specified by:

describeConstable in interface Factory<NoneScopelet>