Edson,
This surely looks like a great template to base my implementation - it looks like an great starting point.
Gurvinder
-----Original Message-----
From: Edson Tirelli-4 [via Drools - Java Rules Engine] [[hidden email]]
Sent: Wed 1/26/2011 11:44 PM
To: Gurvinder Narula1
Subject: Re: How to write a rule that fires when it matches against specific facts in working memory.
  I suggest you use this as a base for your implementation, as I think it will help you:
https://github.com/droolsjbpm/droolsjbpm/blob/master/drools-core/src/main/java/org/drools/base/accumulators/CollectSetAccumulateFunction.java
<https://github.com/droolsjbpm/droolsjbpm/blob/master/drools-core/src/main/java/org/drools/base/accumulators/CollectSetAccumulateFunction.java> Â Â Edson
2011/1/26 groovenarula <[hidden email]>
Thanks Wolfgang. I found it. I Work on it and let you'll know how it goes.
Sent from my iPhone
On Jan 27, 2011, at 1:08 AM, "Wolfgang Laun-2 [via Drools - Java Rules Engine]" <[hidden email] <http://user/SendEmail.jtp?type=node&node=2359225&i=0> > wrote:
Accumulate functions are very well documented in the Expert manual. Look for a section titled "Accumulate Functions".
You could also use accumulate with all the steps in inline code, which is documented in the preceding section.
-W
On 26 January 2011 16:50, groovenarula <[hidden email] <http://user/SendEmail.jtp?type=node&node=2356705&i=0&by-user=t> > wrote:
Thanks for outlining the approach, Edson.
Unfortunately, I'm a newbie using drools, so I just need some clarification
on what you mean by 'matchAll is your own accumulate function with the
semantics you described.' ? Do you mean that I have to create a 'custom'
accumulate function ?
Edson, if that's the case, then I'll try to search for example of creating a
custom function. When I last searched, I did find an example on the
Internet, however, I don't think I found details of how to make the function
available to the rules engine (is it as simple as including the jar in the
classpath or do I need to take addtional steps to use Matchall in drl ?)
Can you please elaborate for the benefit of a noobie ?
Thanks
Gurvinder
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