[rules-users] Database problem

[nch]

Are you using drools-server through REST? Isn't it hard when you have to define a new OO-XML mapping each time you have to invoke drools with a different model?

Regarding the "from" conditional element, I'm looking for a bidirectional synchronization (DB <-> WM). I'm not sure it can be achieved using "from". Has anyone an example?

Many thanks!


--- El vie, 27/8/10, paulB <paul.borlin at sironahealth.com> escribió:

> De: paulB <paul.borlin at sironahealth.com>
> Asunto: Re: [rules-users] Database problem
> Para: rules-users at lists.jboss.org
> Fecha: viernes, 27 de agosto, 2010 14:26
> 
> We were faced with the same issue.  Eventually, I
> realized that we did not
> need to have all the data in working memory at once. 
> I was able to break
> down the use of the rules engine into smaller logical
> chunks.  I now have a
> stateless session that the facts at hand "fly through" the
> engine on demand. 
> Other code does the fetching the next step.  I've even
> used Drools Flow to
> break down these chunks.
> 
> Another thought, have you looked at the from conditional
> element?  That may
> be the intermediary you're looking for.
> 
> http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/html/ch04.html#RuleLanguage-ConditionalElements
> 4.8.3.8. Conditional Element from
> 
> 
> Lastly, there is a case where we would need quite a bit of
> data in working
> memory for things to work correctly.  We are now
> looking at Drools Solver to
> narrow a subset of data that would be inserted into working
> memory.
> 
> 
> This link may be helpful in your research as well:
> http://blogs.illation.com.au/2009/07/drools-performance-comparison/
> -- 
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> Nabble.com.
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