[rules-users] How to allow non-programmers/non-Drools programmers to define rules

[Wolfgang Laun]

Here is a demo for a DSL development: Chapter 5 in
http://members.inode.at/w.laun/drools/DomainSpecificLanguages/DomainSpecificLanguages.pdf

-W




On 21/03/2014, Stephen Masters <stephen.masters at me.com> wrote:
> DSL is essentially just templates which map phrases (which may look a bit
> like natural language) to DRL.
>
> DSLR is the actual rules and looks a bit like normal DRL, except that inside
> the 'when' and 'then' sections you tend to find phrases based on the DSL.
> This is the bit which could possibly be written by a fairly technical
> business user. However it's worth pointing out that it's pretty easy to make
> a mess of it.
>
> To help avoid problems, if you have Guvnor/Workbench, then the guided editor
> supports building rules based on DSL phrases. This means that users are
> forced to pick valid phrases and use text boxes and (assuming you set them
> up properly) drop-down menus to populate many of the variables. I have had
> operations and legal teams using this quite comfortably, given a little bit
> of training and some decent documentation.
>
> As an alternative, Paul King has done a number of presentations on using
> Groovy DSLs to build business rules. By using Groovy DSLs and an IDE, you
> get context sensitive help to generate the rules. It makes it easier to
> build up business-readable rules, although it's probably not a solution for
> business users to write the rules themselves. You could take a look at his
> slides here: http://www.slideshare.net/paulk_asert/groovy-rules
>
> But as Rich mentions, if you can express the rules in a table structure,
> then spreadsheets and (in Guvnor/Workbench) web decision tables are the way
> to go where possible.
>
> Steve
>
>
> On 21 Mar 2014, at 10:11, ankit3j <ankit3j at gmail.com> wrote:
>
>> I am a newbie to Drools and have been looking for a way to allow
>> non-programmers, mostly administrative guys, to define rules using a
>> simple
>> language format and minimum coding terms/effort. I came across the
>> concept
>> of DSL and DSLR and found it useful.
>>
>> However, it seems that to use DSL one needs to have a knowledge of
>> domain(Java) objects defined. Not only does it defeat the purpose it also
>> exposes my Java objects to users. DSLR seems to be a better alternative
>> which can be modified by user. But it seems that DSLR is derived from DSL.
>>
>>
>> Which one of these 2 should actually be defined/written by user and
>> uploaded
>> in the system so that backend can create rules based on it?
>>
>>
>>
>> --
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>> Sent from the Drools: User forum mailing list archive at Nabble.com.
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>
>