com.sun.identity.common

Class GeneralTaskRunnable

java.lang.Object

com.sun.identity.common.GeneralTaskRunnable

All Implemented Interfaces:

TaskRunnable, Runnable

Direct Known Subclasses:

InstantRunnable, PeriodicRunnable

public abstract class GeneralTaskRunnable
extends Object
implements TaskRunnable

An abstract class which works as a base class of scheduleable unit with the implementations of some functions of TaskRunnable interface.

Field Summary

Fields

Modifier and Type	Field and Description
protected HeadTaskRunnable	headTask
protected TaskRunnable	nextTask
protected TaskRunnable	previousTask

Constructor Summary

Constructors

Constructor and Description
GeneralTaskRunnable()

Method Summary

Modifier and Type	Method and Description
void	cancel() Implements for TaskRunnable interface.
HeadTaskRunnable	getHeadTask() Returns the head task of this linkable TaskRunnable.
boolean	isScheduled() Returns true if this TaskRunnable is scheduled to run; otherwise returns false.
TaskRunnable	next() Returns the TaskRunnable next to this TaskRunnable in the linked-list.
TaskRunnable	previous() Returns the TaskRunnable previous to this TaskRunnable in the linked-list.
long	scheduledExecutionTime() Returns the scheduled time of this TaskRunnable.
void	setHeadTask(HeadTaskRunnable headTask) Sets the head task for this linkable TaskRunnable The head task of this TaskRunnable will be set.
void	setNext(TaskRunnable task) Sets the TaskRunnable next to this TaskRunnable in the linked-list.
void	setPrevious(TaskRunnable task) Sets the TaskRunnable previous to this TaskRunnable in the linked-list.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.identity.common.TaskRunnable

addElement, getRunPeriod, isEmpty, removeElement

Methods inherited from interface java.lang.Runnable

run

Field Detail

nextTask

protected volatile TaskRunnable nextTask

previousTask

protected volatile TaskRunnable previousTask

headTask

protected volatile HeadTaskRunnable headTask

Constructor Detail

GeneralTaskRunnable

public GeneralTaskRunnable()

Method Detail

setHeadTask

public void setHeadTask(HeadTaskRunnable headTask)

Sets the head task for this linkable TaskRunnable The head task of this TaskRunnable will be set. HeadTask works as a lock when the elements of the linked task is going to be changed.

Specified by:

setHeadTask in interface TaskRunnable

Parameters:

headTask - The HeadTaskRunnable

getHeadTask

public HeadTaskRunnable getHeadTask()

Returns the head task of this linkable TaskRunnable.

Specified by:

getHeadTask in interface TaskRunnable

Returns:

The head task of this linkable TaskRunnable

previous

public TaskRunnable previous()

Returns the TaskRunnable previous to this TaskRunnable in the linked-list. The correct HeadTaskRunnable must be locked before calling this function.

Specified by:

previous in interface TaskRunnable

Returns:

previous TaskRunnable object or null if it is not set

next

public TaskRunnable next()

Returns the TaskRunnable next to this TaskRunnable in the linked-list. The correct HeadTaskRunnable must be locked before calling this function.

Specified by:

next in interface TaskRunnable

Returns:

next TaskRunnable object or null if it is not set

setPrevious

public void setPrevious(TaskRunnable task)

Sets the TaskRunnable previous to this TaskRunnable in the linked-list. The correct HeadTaskRunnable must be locked before calling this function.

Specified by:

setPrevious in interface TaskRunnable

Parameters:

task - The previous TaskRunnable

setNext

public void setNext(TaskRunnable task)

Sets the TaskRunnable next to this TaskRunnable in the linked-list. The correct HeadTaskRunnable must be locked before calling this function.

Specified by:

setNext in interface TaskRunnable

Parameters:

task - The next TaskRunnable

scheduledExecutionTime

public long scheduledExecutionTime()

Returns the scheduled time of this TaskRunnable.

Specified by:

scheduledExecutionTime in interface TaskRunnable

Returns:

A long value indicate the time this TaskRunnable is scheduled, or -1 if it is not scheduled yet

isScheduled

public boolean isScheduled()

Returns true if this TaskRunnable is scheduled to run; otherwise returns false.

Returns:

A boolean value indicating whether or not this TaskRunnable is scheduled.

cancel

public void cancel()

Implements for TaskRunnable interface. Cancels the task from the associated Timer.

Specified by:

cancel in interface TaskRunnable