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jreceiver.util
Class ScheduledDaemon  

java.lang.Object
  jreceiver.util.Daemon
      jreceiver.util.ScheduledDaemon

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public abstract class ScheduledDaemon

extends Daemon

Generic daemon to which clients can subscribe to status messages and whose worker thread can be scheduled to run periodically.

Version:

$Revision: 1.1 $ $Date: 2002/07/20 03:18:07 $

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Field Summary
protected static org.apache.commons.logging.Log	log           logging object
protected  java.util.Date	next_execution_time
protected  long	schedule_period
protected  java.util.Timer	timer           for scheduling worker thread

 

Fields inherited from class jreceiver.util.Daemon

thread_name, worker_thread

 

Constructor Summary

ScheduledDaemon(java.lang.String thread_name)           ctor

 

Method Summary
java.util.Date	getSchedule()           obtain the time the daemon will next run; null if disabled
void	scheduleAtFixedRate(java.util.Date first_time, long period)           Schedules the daemon's worker thread for repeated fixed-rate execution, beginning at the specified time.
void	scheduleCancel()           cancel any existing schedule for the worker thread

 

Methods inherited from class jreceiver.util.Daemon

doWork, makeThread, sleep, start, stop, stopping

 

Methods inherited from class java.lang.Object

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

 

Field Detail

next_execution_time

protected java.util.Date next_execution_time

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schedule_period

protected long schedule_period

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timer

protected java.util.Timer timer

for scheduling worker thread

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log

protected static org.apache.commons.logging.Log log

logging object

Constructor Detail

ScheduledDaemon

public ScheduledDaemon(java.lang.String thread_name)

ctor

Method Detail

scheduleAtFixedRate

public void scheduleAtFixedRate(java.util.Date first_time,
                                long period)

Schedules the daemon's worker thread for repeated fixed-rate execution, beginning at the specified time. Subsequent executions take place at approximately regular intervals, separated by the specified period.

Calling this method will cancel any existing schedule for the daemon.

Using this means of scheduling work is preferable when time spans between runs are long where you don't want to keep resources (like sockets) open.

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scheduleCancel

public void scheduleCancel()

cancel any existing schedule for the worker thread

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getSchedule

public java.util.Date getSchedule()

obtain the time the daemon will next run; null if disabled

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