Package io.csar

Class DefaultConcernRegistry

java.lang.Object

io.csar.DefaultConcernRegistry

All Implemented Interfaces:

Concerned, ConcernRegistry

public class DefaultConcernRegistry
extends Object
implements ConcernRegistry

Default implementation of a registry of concerns. This class is concurrent thread-safe.

Author:

Garret Wilson

See Also:

• Csar

Constructor Summary

Constructors

Constructor	Description
DefaultConcernRegistry()

Method Summary

Modifier and Type	Method	Description
<T extends Concern> Optional<T>	findConcern(Class<T> concernType)	Returns the concern for the given concern type.
final <T extends Concern, C extends T> Optional<T>	registerConcern(Class<T> concernType, C concern)	Registers the given concern.
<T extends Concern> Optional<T>	unregisterConcern(Class<T> concernType)	Unregisters a concern of the given type.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.csar.ConcernRegistry

registerConcern, registerConcerns, registerConcerns, registerConcerns

Constructor Details

DefaultConcernRegistry

public DefaultConcernRegistry()

Method Details

registerConcern

public final <T extends Concern,
C extends T>
Optional<T> registerConcern(Class<T> concernType,
 C concern)

Description copied from interface: ConcernRegistry

Registers the given concern.

Specified by:

registerConcern in interface ConcernRegistry

Type Parameters:

T - The registration concern type.

C - The type of concern being registered.

Parameters:

concernType - The class with which to associate the concern.

concern - The concern to register.

Returns:

The concern previously associated with the given class.

findConcern

public <T extends Concern> Optional<T> findConcern(Class<T> concernType)

Description copied from interface: Concerned

Returns the concern for the given concern type.

Specified by:

findConcern in interface Concerned

Type Parameters:

T - The type of concern to retrieve.

Parameters:

concernType - The class of concern to retrieve.

Returns:

The concern associated with the given class.

unregisterConcern

public <T extends Concern> Optional<T> unregisterConcern(Class<T> concernType)

Description copied from interface: ConcernRegistry

Unregisters a concern of the given type. If no concern is associated with the specified type, no action occurs.

Specified by:

unregisterConcern in interface ConcernRegistry

Type Parameters:

T - The type of concern being unregistered.

Parameters:

concernType - The class with which the concern is associated.

Returns:

The concern previously associated with the given class.