[rules-users] Clarification needed in writing DSL function mapping

[Wolfgang Laun]

On 30 May 2011 16:09, Bala <bala.ganesh at accenture.com> wrote:

>
> Is there a simplified way of mapping than what i have done???
>
> Java function :
> function boolean checkIfVia(Route route, String locationCode)
> {
>  if(route != null)
>  {
>   Via[] viaArr = route.getViaArray();
>   for(int i=1; i < viaArr.length; i++)
>   {
>      if(viaArr[i].getLocation().equalsIgnoreCase(locationCode))
>          return true;
>      else
>           return false;
>   }
>  }
>  return false;
> }
>
> I don't think that
   else
        return false;
is correct, because then the result would only depend on viaArr[1], and that
ought to be written differently.


>
>
>
> Dsl Mapping:
>
> [keyword][][Ff][Uu][Nn][Cc]
> [Cc][Hh][Ee][Cc][Kk][Ii][Ff][Vv][Ii][Aa]=function boolean checkIfVia(Route
> route, String locationCode)\n{checkIfViaBody}
>

Do you mean that you can write in the DSLR:
   func checkIfVia
A keyword must be a single token.

There's no need to split this into several definitions. Put it all in one
keyword definition.
Never mind the \n.


> [keyword][]checkIfViaBody=\nif(route != null)\n{checkIfViaIfBlock}\nreturn
> false;\n
> [keyword][]checkIfViaIfBlock=\nVia[] viaArr = route.getViaArray();\nfor(int
> i=1; i < viaArr.length; i++)\n{checkIfViaForBlock}\n
>
> [keyword][]checkIfViaForBlock=\nif(viaArr[i].getLocationCode().equalsIgnoreCase(locationCode))\n
> return true; \nelse \nreturn false;\n
>
>
But it would be much simpler to import a Java function.

-W


>
>
>
> -----
> Thanks,
> Bala
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Clarification-needed-in-writing-DSL-function-mapping-tp3002064p3002064.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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