[rules-dev] RIF PRD translation effort to/from Drools & Jess

[Wolfgang Laun]

On 9 February 2011 22:11, Edson Tirelli <ed.tirelli at gmail.com> wrote:

>
>    Pierre,
>
>    Good to see works like yours being done.
>
>    Drools has an internal canonical model that we use to round trip rules
> between the syntaxes we support. The best way of supporting "RIF" in Drools
> is to simply add a parser that parses RIF and populates the canonical model.
> From that we have a DRL "dumper" that generates DRL, enabling the RIF->DRL
> translation. Also, if we create a RIF "dumper", one can then generate RIF
> rules from the canonical model, enabling DRL->RIF translation. That assumes
> that there is a 1-to-1 semantic mapping between RIF and DRL (I believe there
> is, but didn't checked).
>

Do you mean that all of RIF can be expressed in DRL? Then I'd agree. But you
can't express all of DRL in RIF.
-W



>
>    Edson
>
>
> 2011/2/9 <pdl at agh.edu.pl>
>
> Mark, Andrew, Guys,
>>
>> Yes working with DRL may be better for Drools indeed. But the only way I
>> see this working is by implementing this directly in the code of Drools.
>> That's not practical for me, hence I "simply" export/import the rules
>> in/from XML. This way I can focus on the translation.
>>
>> If someone would give me pointers on an easy way to work with DRL, I'd do
>> that of course.
>>
>> I assume you already had discussions on XML (or anything more structured
>> and widely spread than DRL) as working format so I won't be going there :)
>>
>> All the best,
>> Pierre
>>
>>
>> On 09/02/2011 16:46, Mark Proctor wrote:
>> > On 09/02/2011 08:40, pdl at agh.edu.pl wrote:
>> >> Hi all,
>> >>
>> >> I've been working on translators between RIF-PRD, DroolsML and JessML.
>> >> I've put the translators in the form of XSLT stylesheets on the
>> following
>> >> web site along with samples of rules written in the above languages. I
>> >> would greatly appreciate feedback/comments/tips/help on making these
>> >> translators more reliable and accurate.
>> >>
>> >> Web site: yieldrif (dot) appspot (dot) com  (in case emails containing
>> >> URLs are bounced off)
>> >>
>> >> Please note that this is free hosting and has some limitations. Feel
>> free
>> >> to add/comment content on this web site or drop me a line. What would
>> be
>> >> really helpful is a XML Schema for DroolsML and also the rhs to be in
>> XML
>> >> as opposed to drools code.
>> > Is this converting to Drools DRL? or to our deprecate, unmaintained, out
>> > of date and very old XML?
>> Sorry someone just read that sentence back to me, and it probably read
>> very wrong.
>>
>> Let me start again. First up great work, it's good to see any
>> interchange work happening, it's not easy stuff. And I can't wait for us
>> to figure out how to get this working directly against our more recent
>> DRL :)
>>
>> Mark
>> > Mark
>> >> I look forward to hearing from you,
>> >> Pierre
>> >> _______________________________________________
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>> >>
>> >>
>> >
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>> >
>>
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>
>
>
> --
>   Edson Tirelli
>   JBoss Drools Core Development
>   JBoss by Red Hat @ www.jboss.com
>
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