[rules-users] DSL Enumeration / Decision Table ?

[Wolfgang Laun]

Template parsing and expansion doesn't care much about the text between the
overall delimiting keywords; basically it is just a macro processor. This
means that you could very well expand a template containing DSLR rules, and
feed the result as DSLR to the Builder.

Notice that template expansion can be done with a variety of data containing
the actual parameters.

Also, keep in mind that you can write constraints such as
    Fact( ..., field in ( "100", "200",... ),... )
which is certainly preferable to having individual and otherwise identical
rules.

-W


2011/5/20 matiasklein <mklein at porticosys.com>

> Thank you.  I will read up more about templates.  Do you know if it is
> possible to use a DSL with templates?
>
> Thanks Again!
> ________________________________________
> From: manstis [via Drools] [[hidden email]<http://user/SendEmail.jtp?type=node&node=2963820&i=0>]
>
> Sent: Thursday, May 19, 2011 11:24 AM
> To: Matias Klein
> Subject: Re: [rules-users] DSL Enumeration / Decision Table ?
>
> This would appear a (near) perfect use-case for "Templates".
>
> Have a read of the documentation and examples, it should become quite clear
> thereafter :)
>
> On 19 May 2011 15:46, matiasklein <[hidden
> email]</user/SendEmail.jtp?type=node&node=2961816&i=0>> wrote:
> Hi,
>
> I have a DSLR that reads:
>
> There is an event with a code of "93000"
>
> This translates via DSL to:
>
> [when]There is an event with a code {Code}=$event : Event(Code == {Code})
>
> Unfortunately, I have to build many rules that are exactly the same as
> this,
> but with different qualifying codes (i.e. rule #1 qualifies with code 9300,
>
> 93001, 93002, etc., but rule #2 qualifies with 5001, 5002, 5003, etc.).
>
> I would like users of the system to be able to maintain the list of
> qualifying codes in a spreadsheet.  However, I'm not sure how to use an
> enumeration loaded via a spreadsheet.
>
> Does anyone have a recommendation on how to achieve this?
>
> Thanks so much!
>
> Cheers,
>
> Matias
>
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