Class InjectionLayerRegistry

java.lang.Object

eu.cloudnetservice.driver.inject.InjectionLayerRegistry

@Internal
final class InjectionLayerRegistry
extends Object

A registry for injection layers which can be bound to specific hints.

Since:

4.0

Field Summary

Fields

Modifier and Type	Field	Description
private final Collection<Tuple2<Object, InjectionLayer<? extends Injector>>>	knownLayers

Constructor Summary

Constructors

Constructor	Description
InjectionLayerRegistry()

Method Summary

Modifier and Type	Method	Description
@Nullable InjectionLayer<? extends Injector>	findByHint(@Nullable Object hint)	Finds the first layer which is exactly associated with the given hint (as defined by the operator ==).
void	registerLayer(@NonNull InjectionLayer<? extends Injector> layer, @NonNull Object... hints)	Registers to this registry and maps the given hints to the layer.
void	unregisterLayer(@NonNull InjectionLayer<?> layer)	Unregisters all hints that were associated with the given layer.

Methods inherited from class Object

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

Field Details

knownLayers

private final Collection<Tuple2<Object, InjectionLayer<? extends Injector>>> knownLayers

Constructor Details

InjectionLayerRegistry

InjectionLayerRegistry()

Method Details

registerLayer

public void registerLayer(@NonNull
 @NonNull InjectionLayer<? extends Injector> layer,
 @NonNull
 @NonNull Object... hints)

Registers to this registry and maps the given hints to the layer. During the process, there will be no calls to either equals or hashCode. For later lookups, the given hint must be exactly as one of the given hints (as defined by the operator ==).

Note that layer registrations are ordered. If different layers are registered for the same hint instance, the first one that was registered first will be returned.

Parameters:

layer - the layer to register to this registry.

hints - the hints to associate the given layer with.

Throws:

NullPointerException - if either the given layer or hints are null.

unregisterLayer

public void unregisterLayer(@NonNull
 @NonNull InjectionLayer<?> layer)

Unregisters all hints that were associated with the given layer. The layer to unregister is defined by the same instance given to the method (as defined by the operator ==).

Parameters:

layer - the layer to unregister the hints of.

Throws:

NullPointerException - if the gien layer is null.

findByHint

@Nullable
public @Nullable InjectionLayer<? extends Injector> findByHint(@Nullable
 @Nullable Object hint)

Finds the first layer which is exactly associated with the given hint (as defined by the operator ==).

Parameters:

hint - the hint to find the layer of.

Returns:

the injection layer associated with the hint, or null if no layer is associated.

Throws:

NullPointerException - if the given hint is null.