[rules-users] inconsistency with 'collect' and the '||' operator

[Edson Tirelli]

   This looks like a bug. Can you please open a JIRA and attach a self
contained test you are using to reproduce the problem? This helps us to
speed up getting the solution.

   Thanks,
    Edson

2007/11/7, Adrian Cowham <adrian.cowham at gmail.com>:
>
> I'm running into an issue where the || operator embedded in a collect
> isn't working as expected. My collect statement is as follows...
>
>         $request : AccessRequest($name : username, $ID : sessionID, $loc :
> accessLocation, $day : dayOfAccess)
>         $locationRules : ArrayList(size > 0) from
>             collect (AccessRule((allowedLocation == "ANY" ||
> allowedLocation == $loc))
>             from $group.getRules())
>
> I don't get comilation or runtime errors but I don't the expected behavior
> either. That is, I don't get the intersection of AccessRules that have
> allowedLocation equal to ANY or allowedLocation equal to the bound $loc
> variable. Instead, the empty set is returned.
>
> When I modify the rule to look like
>
>         $request : AccessRequest($name : username, $ID : sessionID, $loc :
> accessLocation, $day : dayOfAccess)
>         $locationRules : ArrayList(size > 0) from
>             collect (AccessRule(allowedLocation == $loc))
>             from $group.getRules())
>
> I get the expected output.
>
> However, when I modify the rule to look like
>
>         $request : AccessRequest($name : username, $ID : sessionID, $loc :
> accessLocation, $day : dayOfAccess)
>         $locationRules : ArrayList(size > 0) from
>             collect (AccessRule((allowedLocation == "ANY"))
>             from $group.getRules())
>
> ...it returns the empty set even though there are rules that have
> allowedLocation set to "ANY" (i confirmed this by debugging my java code). I
> haven't seen any documentation that uses the collect statement this way but
> according to my understanding of the grammer this should work. For some
> reason the allowedLocation == "ANY" embedded in the collect isn't working.
> What's interesting to note is that the following rule works flawlessly
> (notice the absence of the collect statement)...
>
> rule "test"
>     when
>         # does the user that just requested access exist in a group
>         $request : AccessRequest($name : username, $ID : sessionID, $loc :
> accessLocation, $day : dayOfAccess)
>         $rule : AccessRule(allowedLocation == "ANY" || allowedLocation ==
> $loc, allowAccess == "true")
>     then
>         System.out.println("Test passed");
> end
>
> Any help on the matter would be greatly appreciated. Thanks.
>
> a
>
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>
>


-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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