[rules-users] Hibernate Configuration with Drools 5.4

[Vincent LEGENDRE]

ok sorry ... 
may be one idea then: drools is using POI as java layer to read xls sheets, and it is very very very memory consuming ... especially with .xlsx format. May be that drools parser don't even reach a point where it can check the row count ... 
hope this helps... sorry again . 

----- Mail original -----

De: "Wolfgang Laun" <wolfgang.laun at gmail.com> 
À: "Rules Users List" <rules-users at lists.jboss.org> 
Envoyé: Lundi 18 Juin 2012 19:40:25 
Objet: Re: [rules-users] Hibernate Configuration with Drools 5.4 

Relax, Vincent, it was sent due to my explicit request, and it was a maller size version. 

I've taken this off-list to get a first-hand impression of why these DTs are considered as a viable solution, and how it fails, etc.. And I think that the OPs Q is legitimate; techniques propagated in Drools Expert without any caveats (e.g., don't do it for more than N rows) should fail gracefully, with an error message such as "after umpteen zillion rules: out of memory" and not just turn belly-up. 

After having received some feedback from the OP about alternative approaches I'll report back to the list. 

-W 




On 18 June 2012 19:26, Vincent LEGENDRE < vincent.legendre at eurodecision.com > wrote: 




Did you really send a 50k rows table to a personal email ??? I can't believe it ... 
I think you should : 
- read the mailing list rules 
- read the previous Wolfgang post telling that you should consider not using such big tables (consider a rule using your 50k rows as parameters) 
- ask questions that are related to rules, and not java heap size limits ... 



De: "zeeshan" < zeeshan.spring at gmail.com > 
À: rules-users at lists.jboss.org 
Envoyé: Lundi 18 Juin 2012 08:19:27 
Objet: Re: [rules-users] Hibernate Configuration with Drools 5.4 



Hi Laune ! 

I have mailed you my spreadsheet at ur gmail id. 

Thanks ! 

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