[rules-users] Accessing a property of an Enum (LHS)

[Edson Tirelli]

    The reason is because Drools does not give any special handling for
qualified identifiers... i.e., it would work if "name" was a public
constant, and in this scenario we don't try to get is as "getName()".

    You may open a JIRA so that we add support for that in the future.

    []s
    Edson


2009/1/9 Gras, Patrick <Patrick.Gras at generali.ch>

>  Hi,
>
> I'm trying to access to a property of an Enum but I get the following
> error:
>
> Unable to create restriction '[QualifiedIndentifierRestr: ==
> Direction.S.name ]' for field 'directionAsString' in the rule 'enum test'
>
> Here is the code for my Enum:
>
> public enum Direction {
>
>         N("North"), S("South"), E("East"), W("West");
>
>         private  final String name;
>
>         private Direction(String name) {
>                 this.name = name;
>         }
>
>         public String getName() {
>                 return this.name;
>         }
> }
>
> And here is my Rule:
>
> rule "enum test"
>         when
>                 $to : TestObject($ds: directionAsString ==
> Direction.S.name);
>         then
>                 System.err.println("OK");
> end
>
> Is there a reason why I cannot do that ?
>
> Thanks for your help
> -Patrick
>
> *Patrick Gras*
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-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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