[rules-users] Is asterisk no longer valid in temporal constaints?

[Wolfgang Laun]

This is indeed a regression, due to the switch to "free form expressions"
and the resulting changes in the parser. Originally (5.1.) there were the
forms "*" (or "+*") and "-*" for  positive and negative infinity,
respectively. (The converter in TimeUtils still handles these strings; it's
DRLParser.g that needs to be fixed.) Omitting the 2nd operand in temporal
operators as a workaround isn't possible where "-*" is intended as 1st
operand.

Creeated JBRULES-3082 <https://issues.jboss.org/browse/JBRULES-3082>

-W

2011/6/13 Michael Anstis <michael.anstis at gmail.com>

> Wouldn't you just use the single parameter form?
>
>
> $order : DrugOrder((start != null && start before $now), (stop == null ||
> stop after[-7d] $now))
>
> I'm not the CEP expert though - I know we don't support "*" in Guvnor's
> guided editors though.
>
> 2011/6/13 Nathan Bell <Nathan.Bell at pharmacyonesource.com>
>
>> In 5.1 this was valid syntax:
>>
>>
>>
>> rule "OrderActiveInLast7Days"
>>
>> when
>>
>>                 $order : DrugOrder((start != null && start before $now),
>> (stop == null || stop after[-7d,*] $now))
>>
>> then
>>
>>                 #stuff
>>
>> end
>>
>>
>>
>>
>>
>> In 5.2.0.CR1 it complains about the asterisk. Is that no longer supported?
>>
>>
>>
>> The error I get is “no viable alternative at input '(' in rule
>> "OrderActiveInLast7Days"”. If I remove the part of the constraint in
>> brackets “[-7d,*]” then it compiles.
>>
>>
>>
>>
>>
>> Thank You,
>>
>>
>>
>> Nathan Bell
>>
>>
>>
>>
>>
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>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
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