Package org.drools.core.time.impl

Class JDKTimerService

java.lang.Object

org.drools.core.time.impl.JDKTimerService

All Implemented Interfaces:

InternalSchedulerService, SchedulerService, TimerService, SessionClock

public class JDKTimerService
extends Object
implements TimerService, SessionClock, InternalSchedulerService

A default Scheduler implementation that uses the JDK built-in ScheduledThreadPoolExecutor as the scheduler and the system clock as the clock.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JDKTimerService.JDKJobHandle

Field Summary

Fields

Modifier and Type	Field	Description
protected TimerJobFactoryManager	jobFactoryManager
protected ScheduledThreadPoolExecutor	scheduler

Constructor Summary

Constructors

Constructor	Description
JDKTimerService()
JDKTimerService(int size)

Method Summary

Modifier and Type	Method	Description
long	getCurrentTime()	Returns the current time from the scheduler clock
TimerJobFactoryManager	getTimerJobFactoryManager()
Collection<TimerJobInstance>	getTimerJobInstances(long id)	This method may return null for some TimerService implementations that do not want the overhead of maintain this.
long	getTimeToNextJob()	Returns the number of time units (usually ms) to the next scheduled job
void	internalSchedule(TimerJobInstance timerJobInstance)
void	removeJob(JobHandle jobHandle)	Remove the job identified by the given job handle from the scheduled queue
void	reset()	Reset this service
JobHandle	scheduleJob(Job job, JobContext ctx, Trigger trigger)	Schedule a job for later execution
void	setTimerJobFactoryManager(TimerJobFactoryManager timerJobFactoryManager)
void	shutdown()	Shuts the service down

Methods inherited from class java.lang.Object

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

Field Details

scheduler

protected ScheduledThreadPoolExecutor scheduler

jobFactoryManager

protected TimerJobFactoryManager jobFactoryManager

Constructor Details

JDKTimerService

public JDKTimerService()

JDKTimerService

public JDKTimerService(int size)

Method Details

setTimerJobFactoryManager

public void setTimerJobFactoryManager(TimerJobFactoryManager timerJobFactoryManager)

Specified by:

setTimerJobFactoryManager in interface TimerService

getTimerJobFactoryManager

public TimerJobFactoryManager getTimerJobFactoryManager()

Specified by:

getTimerJobFactoryManager in interface TimerService

getCurrentTime

public long getCurrentTime()

Description copied from interface: TimerService

Returns the current time from the scheduler clock

Specified by:

getCurrentTime in interface SessionClock

Specified by:

getCurrentTime in interface TimerService

Returns:

the current timestamp

reset

public void reset()

Description copied from interface: TimerService

Reset this service

Specified by:

reset in interface TimerService

shutdown

public void shutdown()

Description copied from interface: TimerService

Shuts the service down

Specified by:

shutdown in interface TimerService

scheduleJob

public JobHandle scheduleJob(Job job,
 JobContext ctx,
 Trigger trigger)

Description copied from interface: SchedulerService

Schedule a job for later execution

Specified by:

scheduleJob in interface SchedulerService

Returns:

internalSchedule

public void internalSchedule(TimerJobInstance timerJobInstance)

Specified by:

internalSchedule in interface InternalSchedulerService

removeJob

public void removeJob(JobHandle jobHandle)

Description copied from interface: SchedulerService

Remove the job identified by the given job handle from the scheduled queue

Specified by:

removeJob in interface SchedulerService

Parameters:

jobHandle - the job identity handle

getTimeToNextJob

public long getTimeToNextJob()

Description copied from interface: TimerService

Returns the number of time units (usually ms) to the next scheduled job

Specified by:

getTimeToNextJob in interface TimerService

Returns:

the number of time units until the next scheduled job or -1 if there is no job scheduled

getTimerJobInstances

public Collection<TimerJobInstance> getTimerJobInstances(long id)

Description copied from interface: TimerService

This method may return null for some TimerService implementations that do not want the overhead of maintain this.

Specified by:

getTimerJobInstances in interface TimerService

Returns: