[rules-users] Removing facts from statefulknowledgeSession's memory

[Wolfgang Laun]

On 11 November 2010 04:16, Ayush <ayush.vatsyayan at alcatel-lucent.com> wrote:
>
> Thanks for your reply.
>
> Also let me know about facts which are loaded into working memory (Keeping
> in mind that I'm not calling session.dispose()).
> Where should I define their expiry time or how should I retract them after 5
> minutes?

You declare the class to represent an event and set the expiry time.

import ...MyEventType
declare MyEventType
   @role( event )
   @expires( 5m )
end

Or you could catch them with a one-shot timer rule where other actions
besides retract would be possible.

rule "kill after 5m"
   timer(int: 5m)
when
   $f: SomeType()
then
   // other actions?!
   retract( $f );
end

Using a suitable interface or supertype may reduce the number of
required rules.

-W


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