[rules-users] Stateless K-Session but no Sequential Mode

[Swindells, Thomas]

>From what I understand the answer to 1, and 3 is no - once the list of activations is generated it isn't regenerated.

This greatly increases performance if you are dealing with a problem where the input facts and consequences are partitioned and isolated - for instance you could have a load of complex routing rules which update the message with the destination it should be sent to. As long as your rules don't want to reason over the messages destination list you can execute this sequentially.

Thomas

From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Harshit Bapna
Sent: 20 October 2010 08:30
To: Rules Users List
Subject: Re: [rules-users] Stateless K-Session but no Sequential Mode

Few more questions related to sequential mode in stateless session:

1. Can we insert objects in the RHS of the rule and these objects can be used in the LHS of another rule ?
2. Can anyone provide use case for sequential mode stateless session ?
3. Can I have a high salience rule which inserts fact using insert keyword and that fact can be used in the LHS of another rule with low salience.
On Wed, Oct 20, 2010 at 12:43 PM, Swindells, Thomas <TSwindells at nds.com<mailto:TSwindells at nds.com>> wrote:
I've not used it but from what I understand:
Sequential mode:
1. Insert facts
2. Create activations.
3. Fire all activations.
4. Done.

None Sequential (Standard) mode:
1. Insert facts.
2. Create initial activations.
3. Pop and fire highest salience activation.
4. Update activations (if update, retract etc was performed).
5. If there are more activations goto 3.
6. Done.

They key difference is that in the standard mode rule consequences can activate and deactivate activations as they update the working memory.

Thomas

> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org<mailto:rules-users-bounces at lists.jboss.org> [mailto:rules-users-<mailto:rules-users->
> bounces at lists.jboss.org<mailto:bounces at lists.jboss.org>] On Behalf Of Wolfgang Laun
> Sent: 19 October 2010 22:34
> To: Rules Users List
> Subject: Re: [rules-users] Stateless K-Session but no Sequential Mode
>
> Indeed I have, and I've read it down to the last paragraph:
> "Sequential mode can only be used with a Stateless Session and is off
> by default. To turn it on, either call..." This tells me about a
> StatelessKnowledgeSession WITH sequential mode.
>
> So, what if I create a StatelessKnowledgeSession from a KnowledgeBase,
> but do not turn sequential mode on?
>
> Best
> -W
>
>
> 2010/10/19 Michael Anstis <michael.anstis at gmail.com<mailto:michael.anstis at gmail.com>>:
> > No doubt I'm missing the point but have you seen "3.3.7.1. Sequential Mode"
> > in Expert's documentation?
> >
> > On 19 October 2010 21:27, Wolfgang Laun <wolfgang.laun at gmail.com<mailto:wolfgang.laun at gmail.com>> wrote:
> >>
> >> As I understand the Expert documentation, Sequential Mode has to be
> >> turned on, even with a Stateless Knowledge Session to achieve all the
> >> shortcuts and speed-ups.
> >>
> >> What the documentation does not tell me (or I haven't seen it) is the
> >> difference of a Stateless Knowledge Session with and without Sequential
> >> Mode.
> >>
> >> Cheers
> >> Wolfgang
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at lists.jboss.org<mailto:rules-users at lists.jboss.org>
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
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> >
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-- Harshit Bapna

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