[rules-users] addKnowledgePackages Delay

[Moe Alkhafaji]

Thanks for the reply. But I don't understand what you mean by caching  
the KnowledgeBase. This is about adding a pre compiled  
KnowledgePackage to a KnowledgeBase. So, how does caching a  
KnowledgeBase makes addition of new KnowledgePackage faster? Please  
excuse my ignorance if I am not catching what you are suggesting.  
Maybe a couple of lines of code to demonstrate your suggestion would  
be greatly appreciated. Thanks.

Sent from my iPhone

On May 3, 2010, at 1:24 AM, Rajnikant Gupta <capricorn.raj at gmail.com>  
wrote:

> Hi,
>
> Yes, adding packages to knowledgeBase does take some time. You can  
> probably try caching your knowledgeBase. By doing this all, but  
> first, requests should be significantly fast.
>
>
>
>
> Regards,
>
> Rajnikant Gupta
>
> http://rkthinks.wordpress.com/
>
>
> On Mon, May 3, 2010 at 11:36 AM, malkhafaji  
> <moe.alkhafaji at medcpu.com> wrote:
>
> Hello,
>
> I am trying to add knowledge packages to an existing KnowledgeBase. My
> largest DRL file has 110 rules. I noticed that it may take up to 5  
> seconds
> just to execute the following statement:
>
> this.knowledgeBase.addKnowledgePackages(packages);
>
> where "packages" is just a list of one knowledge package  
> representing one
> drl. The nature of my rules is that I initially load a small set of  
> rules
> and then at runtime my rules may load other DRLs. The problem is  
> each DRL
> loading command (this.knowledgeBase.addKnowledgePackages(packages))  
> takes a
> few seconds and I have no idea why. Although, all those DRLs are  
> already
> compiled (at startup time). It is the line I pasted above that takes  
> the
> longest time out of anything else I do.
>
> Any idea why just merely adding a KnowledgePackage list to a  
> KnowledgeBase
> can take this much time? Do you guys have any suggestions on how I can
> reduce this time? I tried to create another dummy KnowledgeBase and  
> get the
> KnowledgePackage from it at runtime and add that to my KnowedgeBase  
> above
> (thinking that would reduce the time maybe), but not at all.
>
> Any ideas would be great. The API does not have much info on what  
> that add
> method exactly does behind the scenes, and how I can get around the  
> long
> delays. This is very frustrating to me, and I am not sure where to  
> look.
> Thanks for ANY help at all.
> --
> View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/addKnowledgePackages-Delay-tp772574p772574.html
> Sent from the Drools - User mailing list archive at Nabble.com.
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