Package io.csar

Class DecoratedConcernedThreadGroup

java.lang.Object

java.lang.ThreadGroup

io.csar.DecoratedConcernedThreadGroup

All Implemented Interfaces:

Concerned, Thread.UncaughtExceptionHandler

Direct Known Subclasses:

ConcernRegistryThreadGroup

public class DecoratedConcernedThreadGroup
extends ThreadGroup
implements Concerned

A thread group that allows the retrieval of a concern on a per-thread-group basis by decorating an existing concerned object.

Author:

Garret Wilson

See Also:

• Csar

Constructor Summary

Constructors

Constructor	Description
DecoratedConcernedThreadGroup(String name, Concerned concerned)	Thread group name constructor.
DecoratedConcernedThreadGroup(ThreadGroup parent, String name, Concerned concerned)	Thread group parent and thread group name constructor.

Method Summary

Modifier and Type	Method	Description
<T extends Concern> Optional<T>	findConcern(Class<T> concernClass)	Returns the concern for the given concern type.
protected Concerned	getConcerned()

Methods inherited from class java.lang.ThreadGroup

activeCount, activeGroupCount, allowThreadSuspension, checkAccess, destroy, enumerate, enumerate, enumerate, enumerate, getMaxPriority, getName, getParent, interrupt, isDaemon, isDestroyed, list, parentOf, resume, setDaemon, setMaxPriority, stop, suspend, toString, uncaughtException

Methods inherited from class java.lang.Object

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

Constructor Details

DecoratedConcernedThreadGroup

public DecoratedConcernedThreadGroup(String name,
 Concerned concerned)

Thread group name constructor. Creates a thread group using the current thread as the parent.

Parameters:

name - The name of the new thread group.

concerned - The implementation for retrieving concerns for this thread group.

Throws:

NullPointerException - if the given concerned is null.

SecurityException - If the current thread cannot create a thread in the specified thread group.

See Also:

• ThreadGroup.checkAccess()
• ConcernRegistry.registerConcern(Concern)

DecoratedConcernedThreadGroup

public DecoratedConcernedThreadGroup(ThreadGroup parent,
 String name,
 Concerned concerned)

Thread group parent and thread group name constructor.

Parameters:

parent - The parent thread group.

name - The name of the new thread group.

concerned - The implementation for retrieving concerns for this thread group.

Throws:

NullPointerException - if the given parent and/or concerned is null.

SecurityException - If the current thread cannot create a thread in the specified thread group.

See Also:

• ThreadGroup.checkAccess()
• ConcernRegistry.registerConcern(Concern)

Method Details

getConcerned

protected Concerned getConcerned()

Returns:

The implementation for managing concerns for this thread group.

findConcern

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

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:

concernClass - The class of concern to retrieve.

Returns:

The concern associated with the given class.