org.schmant.run
Class AlreadySatisfiedTaskDependency

java.lang.Object
  java.util.Observable
      org.schmant.run.AlreadySatisfiedTaskDependency

All Implemented Interfaces:

TaskDependency

public class AlreadySatisfiedTaskDependency
extends Observable
implements TaskDependency

This task dependency is already satisfied! It can be used when scheduling a task that might have had but did not have dependencies.

Since:

0.8

Author:

Karl Gustafsson

Field Summary

static AlreadySatisfiedTaskDependency

INSTANCE This singleton instance may be used instead of instantiating this class.

Constructor Summary

AlreadySatisfiedTaskDependency()

Method Summary

Observable	getDependencyObservable() Get an observable for this dependency.
Lock	getSatisfiedStateLock() This method returns a dummy lock.
boolean	isSatisfied() This method always returns true.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final AlreadySatisfiedTaskDependency INSTANCE

This singleton instance may be used instead of instantiating this class.

Constructor Detail

AlreadySatisfiedTaskDependency

public AlreadySatisfiedTaskDependency()

Method Detail

getDependencyObservable

public Observable getDependencyObservable()

Get an observable for this dependency. Note that this observable will never notify its observers since this dependency is already satisfied.

Specified by:

getDependencyObservable in interface TaskDependency

Returns:

An Observable to observe.

getSatisfiedStateLock

public Lock getSatisfiedStateLock()

This method returns a dummy lock.

Specified by:

getSatisfiedStateLock in interface TaskDependency

Returns:

The lock used to protect the satisfied state.

See Also:

TaskDependency.isSatisfied()

isSatisfied

public boolean isSatisfied()

This method always returns true.

Specified by:

isSatisfied in interface TaskDependency

Returns:

true if the dependency is satisfied.