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  3. June 2006

Re: Thread question

Hi Ron,
All of the comments I made hold for non-iSeries (sorry, System i) platforms as well. A couple of folks on this list have suggested that you plan now for a more maintainable batch job scheduling approach rather than placing this functionality directly into your web app. That is fine as far as it goes, and I would add the Quartz job scheduler to the list of things to consider if you're looking for something Java-centric and flexible <http://www.opensymphony.com/ quartz/>. Quartz can be embedded within a servlet container, or it can run as a standalone app (which you could easily launch as a Windows service using JSL or a similar tool). There is also a list of java-based job schedulers at <http://java-source.net/open-source/ job-schedulers>, but I don't have experience with any of those so I can't really offer any comparisons.
And if this is a one-time requirement (if any such thing exists...) then the approach you're described already should be okay too. 

t.


On 22-Jun-06, at 7:29 AM, RPower@xxxxxxxxxx wrote:


Ooops, I forgot that this is for Java on the iSeries.  This particular
application isn't running on the iSeries.  In fact, due to certain
changes, we won't have an iSeries in about 3 years... being phased out for Windows Servers. Sorry for the mixup. Does the same apply for that then? 

Ron Power
Programmer
Information Services
City Of St. John's, NL
P.O. Box 908
St. John's, NL
A1C 5M2
709-576-8132
rpower@xxxxxxxxxx
http://www.stjohns.ca/
______________________________________________________________________ _____ Success is going from failure to failure without a loss of enthusiasm. - 
Sir Winston Churchill




"Walden H. Leverich" <WaldenL@xxxxxxxxxxxxxxx>
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2006/06/21 04:27 PM
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RE: Thread question







Is this efficient to do?
Define "efficient." From a machine performance point of view, sure. The 
sleeping thread won't take any machine resources so it's "efficient."
However, it's probably not how I'd do it.
Don't forget you're still on an iSeries. Why not simply add something to the job scheduler to run a job once a day to look for expiry dates? The 
job could be either a "simple" RPG program or a java application. Why
make it a web application? If you need it to be a "Web" application I'd still use the job scheduler and just use something like Brad's GetURI to kick off the web page needed to invoke the process. What's starting the 
sleeping thread? What restarts it on application start?

-Walden

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Walden H Leverich III
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