I&#39;m running into an issue where the || operator embedded in a collect isn&#39;t working as expected. My collect statement is as follows...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $request : AccessRequest($name : username, $ID : sessionID, $loc : accessLocation, $day : dayOfAccess)
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; $locationRules : ArrayList(size &gt; 0) from&nbsp;
<br>
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; collect (AccessRule((allowedLocation == &quot;ANY&quot; || allowedLocation == $loc))
<br>
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; from $group.getRules())<br><br>I don&#39;t get comilation or runtime errors but I don&#39;t the expected behavior either. That is, I don&#39;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.
<br><br>When I modify the rule to look like <br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $request : AccessRequest($name : username, $ID : sessionID, $loc : accessLocation, $day : dayOfAccess)<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; $locationRules : ArrayList(size &gt; 0) from&nbsp;
<br>

&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; collect (AccessRule(allowedLocation == $loc))
<br>

&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; from $group.getRules())<br><br>I get the expected output.<br><br>However, when I modify the rule to look like<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $request : AccessRequest($name : username, $ID : sessionID, $loc : accessLocation, $day : dayOfAccess)
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; $locationRules : ArrayList(size &gt; 0) from&nbsp;
<br>

&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; collect (AccessRule((allowedLocation == &quot;ANY&quot;))
<br>

&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; from $group.getRules())<br><br>...it returns the empty set even though there are rules that have allowedLocation set to &quot;ANY&quot; (i confirmed this by debugging my java code). I haven&#39;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 == &quot;ANY&quot; embedded in the collect isn&#39;t working. What&#39;s interesting to note is that the following rule works flawlessly (notice the absence of the collect statement)...
<br><br>rule &quot;test&quot;
<br>&nbsp;&nbsp;&nbsp; when
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; # does the user that just requested access exist in a group
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; $request : AccessRequest($name : username, $ID : sessionID, $loc : accessLocation, $day : dayOfAccess)&nbsp;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; $rule : AccessRule(allowedLocation == &quot;ANY&quot; || allowedLocation == $loc, allowAccess == &quot;true&quot;)&nbsp;&nbsp;&nbsp; &nbsp;
<br>&nbsp;&nbsp;&nbsp; then
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; System.out.println(&quot;Test passed&quot;);
<br>end<br><br>Any help on the matter would be greatly appreciated. Thanks.<br><br>a<br>