[rules-users] DSL questions....

[Lucas Amador]

Hi Macon,
you can write all on one statement, but must be separated by comma

> [when]User is eligible for “{testCD}”=not MyFeature(testCD ==  
> “{testCD}”) ,  $eligible : FeatureEligible(testCD = “{testCD}”)

and you will not get any overhead at runtime because all the  
interpretation happens at compilation, as you says

lucaz

El 22/10/2009, a las 11:28, Pegram, Macon escribió:

> All,
>
> Given the following rule:
>
> rule "Add ABC123 Feature"
>       when
>             not MyFeature(testCD == "ABC123")
>             UserRequest(someValue == "ABC123_FEATURE")
>             $eligible : FeatureEligible(testCD == "ABC123")
>       then
>             insert(new MyFeature($eligible));
> end
>
> I’d like to create a DSL.   Notice that “testCD” is the same value.
>
> Is it possible to apply a value captured in a DSL and use it in more  
> than one condition?    In the above scenario we want to see if the  
> user is eligible for the feature ABC123, and check whether or not  
> that feature has already been added in working memory.
>
> The DSL version of the rule might look something like:
> rule "Add ABC123 Feature"
>       when
>           User is eligible for "ABC123"
>           User requests "ABC123_FEATURE"
>       then
>             Add feature
> end
>
> Would I need to write the DSL for the “ABC123” piece like this?
> [when]User is eligible for “{testCD}”=not MyFeature(testCD ==  
> “{testCD}”)   $eligible : FeatureEligible(testCD = “{testCD}”)
>
> Or will I always need to create 2 statements?
>
> What are the performance implications of using a DSL?  Is there  
> extra overhead at runtime or does all the interpretation occur at  
> rule compilation?
>
> Thanks!
> Macon
>
>
>
>
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