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Groups > comp.lang.java.programmer > #14731

Re: Network license control for a Java application

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How does this method;

create a database table  :
ID, TASK_NAME, TASK_RUN_COUNT

insert (id, task_run_count) values(1, 10);

when run :
update set task_run_count=task_run_count-1 where id=1 and task_run_count > 0;

if update one record the the application can run, if no record updated then the application cannot run.

but if the application crash, i have no good idea, it depends on your requirement.

On Monday, May 21, 2012 5:08:45 PM UTC+8, Qu0ll wrote:
> I have been tasked with providing some form of network license control for a 
> Java application.  The app would be stored on a network drive and run from a 
> client machine.  The basic idea is that it will be able to work out how many 
> times it is being run concurrently and prevent the N+1th user from running 
> the software where N is the number of concurrent licenses the customer has 
> purchased.
> 
> Is this possible somehow with a Java application?  I was thinking of maybe 
> incrementing a number stored in a file every time the app is run and then 
> decrementing it again when the app exits.  I also thought of storing a time 
> when each app invocation started so I could "time-out" users in the cases 
> where the app may crash.
> 
> Is this a viable solution or is there a better way?
> 
> --
> And loving it,
> 
> -Qu0ll (Rare, not extinct)
> _________________________________________________
> Qu0llSixFour@gmail.com
> [Replace the "SixFour" with numbers to email me]

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Thread

Network license control for a Java application "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-05-21 19:08 +1000
  Re: Network license control for a Java application Hatter Jiang <jht5945@gmail.com> - 2012-05-21 05:04 -0700
  Re: Network license control for a Java application "Jeffrey H. Coffield" <jeffrey@digitalsynergyinc.com> - 2012-05-21 07:47 -0700
    Re: Network license control for a Java application Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-05-21 09:48 -0700
      Re: Network license control for a Java application "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-06-02 13:01 +1000
        Re: Network license control for a Java application "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-06-15 19:31 +1000

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