[rules-users] Smart Templates

[FrankVhh]

Hi,

The way I see it, this is the way your template should look like. I do not
see the need to use eval() at all.

rule "DC_0"
when 
    $service: Service(name == "@{service}", value == "@{value}")
    $riskType: RiskType()
then 
    $riskType.setName($service.getType("@{value}"));
    $riskType.setAtt(0,"@{value}");
end

I am assuming that RiskType is already inserted in WM, but you could just as
well create a new object in the then-part of the rule.

In stead of using the java-function to determine the name, you might
actually just as well create an other rule that sets the name according to
the value, thus putting the entire decision logic in rules.

Hope this helps.

Regards,
Frank


ChrisMu wrote:
> 
> Hi,
> 
>  I'm trying to get a template (.drt) to generate 2 rules (.drl) from 2
> datasets but by doing a little bit more work than direct substitution.
> 
> Data (service,value):
> DC, AAA
> DC, XYZ
> 
> Idea for the template - if value is of type1 then create Type object with
> 'Type1' as name. If value is of type2, use 'Type2' as name:
> 
> rule "DC_@{row.rowNumber}"
> when 
>     Service(name == "DC")    
> then 
>     Type.setName(eval(Service.getType(@{value})))
>     Type.setAtt(0,@{value})
> end template
> 
> eval(Service.getType(@{arg0})) should take 'AAA' or 'XYZ' etc as arg and
> return a string Type1/Type2 etc.
> 
> This would then generate 2 rules that look like:
> 
> rule "DC_0"
> when 
>     Service(name == "DC", value == "AAA")    
> then 
>     RiskType.setName("Type1")
>     RiskType.setAtt(0,"AAA")
> 
> rule "DC_1"
> when 
>     Service(name == "DC", value == "XYZ")    
> then 
>     RiskType.setName("Type2")
>     RiskType.setAtt(0,"XYZ")
> 
> ...is this possible at all? I'm trying to avoid the eval step being done
> in the actual rule (.drl) .
> 
> Thanks
> 
> Chris
> 


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