[rules-users] check if a Enum object is present in condition

[Ansgar Konermann]

Am 22.10.2011 20:28 schrieb "Martin A" <wmlsub at gmail.com>:
>
> Hello,
>
> I try to put a condition in my LHS, such as:
>
> rule "initial_playground_dialog"
>     #agenda-group "firstTimeUser"
>     #salience 99
>     when
>         $gst :
GameStateController(!hasEventOccurred("initial_playground_dialog"))
>         $list : List()
>         $screen : FrontendScreen.PLAYGROUND
>     then
>        ....
> end
>
> where 'FrontendScreen' is an enum and PLAYGROUND is its property.

Is it actually a property of an enum or rather one of the enum literals?

If it is actually a property, you will need to obtain an instance of the
FrontendScreen enum first. If PLAYGROUND is actually an enum literal and you
want to bind this literal to a variable, use:

$screen: FrontendScreen( this == FrontendScreen.PLAYGROUND )

Regards

Ansgar

> However I get a syntax error. What's the proper way to check for and
assign such a session object?
>
> Any help is appreciated!
>
> Best regards,
> Martin
>
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