[rules-users] Collection in working memory!

[vanshi]

Can somebody please look at this and post a reply?


vanshi wrote:
> 
> Hi all,
> 
> I'm new to Drools and have a simple question. In my program I have a
> collection A of objects B, and each B object has 30-40 attributes. And the
> rule run against these attributes of B. I want to run rules against each
> instance of B and I 've close to 45 rules. These rules can be grouped
> under 3 categories and at a time just 1 group need to be applied for a
> particular object....point is that there is no need to blindly run an
> object against all rules. Now with this background, I would love to hear
> what is the best implementation? 
> 
> I have put rules in 3 different DRL file and packaged them into single
> Rule base. For inserting the facts in working memory, I'm iterating
> through collection and inserting one B object at a time in Working memory
> and then firing all rules of any one group (for that I'm using
> RuleNameEndsWithAgendaFilter()). How bad is this design? Because I can see
> for 100 objects I'm inserting facts in working memory 100 times and then
> firing rules 100 times. I can make the top level collection 'A' global(or
> insert 'A' in WM) and then iterate over it from the rule file ...would
> that be a better solution? 
> 
> Would appreciate any input in this regard. Thanks.
> 
> 

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