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Posted to muse-dev@ws.apache.org by "Dan Jemiolo (JIRA)" <ji...@apache.org> on 2006/12/09 21:39:22 UTC
[jira] Closed: (MUSE-154) reschedule method of Timer utility in
Muse will give illegal state exceptions
[ http://issues.apache.org/jira/browse/MUSE-154?page=all ]
Dan Jemiolo closed MUSE-154.
----------------------------
Resolution: Fixed
Fixed
> reschedule method of Timer utility in Muse will give illegal state exceptions
> -----------------------------------------------------------------------------
>
> Key: MUSE-154
> URL: http://issues.apache.org/jira/browse/MUSE-154
> Project: Muse
> Issue Type: Bug
> Components: Utilities - General, QName, and XML
> Affects Versions: 2.0.0, 2.1.0
> Environment: any
> Reporter: Mohammad Fakhar
> Assigned To: Dan Jemiolo
> Priority: Minor
> Fix For: 2.1.0
>
>
> The reschedule method of Timer utility gives the following error upon execution:
> java.lang.IllegalStateException: Task already scheduled or cancelled
> at java.util.Timer.sched(Timer.java:331)
> at java.util.Timer.schedule(Timer.java:157)
> Here is the scenario:
> 1) I schedule a resource for termination at time X using the scheduled life time capability.
> 2) 5 seconds later, I re-schedule the same resource for termination at time Y (where Y is > X).
> 3) The lifetime capabilites use the Timer utility underneath the covers and upon rescheduling, the reschedule
> method is called in SimpleScheduledTermination implementation: _terminationTimer.reschedule(time);
> 4) The reschedule method cancels the task, creates a new instance of a timer and schedules the SAME instance of the task with the new timer:
> Timer.reschedule {
> ............
> cancel();
> _timer = new java.util.Timer();
> schedule(whenToFire);
> }
> Timer.schedule {
> ..........
> _timer.schedule(_task, whenToFire);
> }
> 5) Now, java.util.Timer doesn't allow you to schedule the same instance of a previously cancelled task EVEN with a new timer instance (I experimented with it on the side). This is not explicit in the jdk javadoc, but it won't allow you to do this. Not sure if this should be a jdk bug or not, but I thought I would get it documented here at least.
> 6) this problem will surface whenever Muse implements the WS-N Renew function.
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