If the attribute IPhoneSentences.Sentence.descriptor is a
Collection<ETimeConstraint> then this makes perfect sense. The elements are
instances of ETimeConstraint (what your second rule tests for) not instances of
the enum class definition ETimeConstraint. (what your first rule tests
for...maybe...) However, I'm wondering why the first version of the "My Test"
rule compiles at all. It doesn't when I try it.
--- On Tue, 9/13/11, Hezi Stern <he...@delegatecom.com> wrote:
From: Hezi Stern <he...@delegatecom.com>
Subject: [rules-users] Problem evaluating with Enum
To: rules-users@lists.jboss.org
Date: Tuesday, September 13, 2011, 3:54 PM
I have encountered the following problem using enums in drools. I have an enum
defined called ETimeConstraint, something of the sort: public enum
ETimeConstraint { NO_CONSTRAINT, TODAY,TOMORROW,;} Now I wish to
filter sentences which reside in the working memory based on a time constraint
which is of this enum type.I created the following test rule rule "My Test"
when
$sentences: ArrayList() from collect
(IPhoneSentences.Sentence(
descriptor contains ETimeConstraint
)) then //somethingend
this does not work meaning no sentence are selected although I know that there
are sentences in the working memory. but when I add ETimeConstraint.name it
does: rule "My Test" when
$sentences: ArrayList()
from collect (IPhoneSentences.Sentence(
descriptor contains ETimeConstraint.name
))
then
//somethingend I can stick to this workaround but it becomes very problematic
to work this way. Furthermore once I wish to define a variable for example
defining $timeConstraint : rule "My Test"
when
$cm: Condition(
$timeConstraint: contextIntention,
)
$sentences: ArrayList() from collect
(IPhoneSentences.Sentence(
descriptor
contains $timeConstraint
)) then //somethingend this will not work
because I can’t put $timeConstraint.name any suggestions? I am
running:- Drools 5.2.0- Eclipse Helios - JBoss 5.1.0
ThanksHezi
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