Hi,
thanks for your help, I created the JIRA as requested
(http://jira.jboss.org/jira/browse/JBRULES-1611).
The workaround you suggest works only partially, if any of the
ExpenseDetails is of type ExpenseType.TAX it will fire the rule.
What I would like to do is to fire the rule only if all ExpenseDetails
in the same report are of type ExpenseType.TAX.
Any help is more than welcome.
Thanks
Alessandro
Edson Tirelli wrote:
Hmm, now that you mentioned, I see that our parser is limiting the
forall() CE, not allowing nested "from" CEs. This is something we should
fix, since the limitation is purely a parser limitation.
Anyway, for your case, the workaround is simply to use the "raw"
forall-equivalence: not( A() and not( B() ) ). So try this:
rule "Do Not Process TAX" when
$report: ExpenseReport($expenseDetails: expenseDetails)
not ( $ed : ExpenseDetails() from $expenseDetails and
not ( ExpenseDetails( this == $ed, expenseType ==
ExpenseType.TAX ) from $expenseDetails )
)
then
System.out.println("################ It works
##################");
insertLogical("Bypass Process");
end
This is just more verbose than the forall, but it is exactly the
same. Once the parser is fixed, you will be able to simply write:
rule "Do Not Process TAX" when
$report: ExpenseReport($expenseDetails: expenseDetails)
forall ( ExpenseDetails( expenseType == ExpenseType.TAX )
from $expenseDetails )
then
System.out.println("################ It works
##################");
insertLogical("Bypass Process");
end
BTW, may I ask you please to open a JIRA so we don't forget to fix
this for 5.0?
Thanks,
Edson
2008/5/18 Alessandro Di Bella <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>:
Hi,
I have these two classes:
ExpenseReport{
Collection<ExpenseDetails> expenseDetails
}
ExpenseDetails{ ExpenseReport document
ExpenseType expenseType
}
I am trying to create a rule that fires when all the ExpenseDetails in a
ExpenseReport are of the same type:
rule "Do Not Process TAX" when
$report: ExpenseReport($expenseDetails: expenseDetails)
forall (
ExpenseDetails(document==$report, expenseType
== ExpenseType.TAX)
) then
System.out.println("################ It works
##################");
insertLogical("Bypass Process");
end
For some reasons, it fires regardless that value of
ExpenseDetails.expenseType.
I just started with drools and any help i more than welcome.
Thanks
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Edson Tirelli
JBoss Drools Core Development
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
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