Problem with memberOf and/or eval used in collect statement ----------------------------------------------------------- Key: JBRULES-1204 URL: http://jira.jboss.com/jira/browse/JBRULES-1204 Project: JBoss Rules Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 4.0.1, 4.0.0.GA Reporter: Chris West Assigned To: Mark Proctor Attachments: TestMemberOfWithCollect.zip I'm having a problem using memberOf combined with a collect statement. My test includes 3 rules each written to output the same results (I think), but I get different results (depending on which version of Drools I use). The rules are: rule "TestMemberOf" salience 10 when $messages: ArrayList() from collect (Message(status == 100)) $wrappers: ArrayList() from collect (Wrapper(message memberOf $messages)) then System.out.println("TestMemberOf: " + $wrappers.size()); end rule "TestEval1" salience 9 when $messages: ArrayList() from collect (Message(status == 100)) $wrappers: ArrayList() from collect (Wrapper($message: message, eval($messages.contains($message)))) then System.out.println("TestEval1: " + $wrappers.size()); end rule "TestEval2" salience 8 when $wrappers: ArrayList() from collect (Wrapper($message: message, eval($message.getStatus() == 100))) then System.out.println("TestEval2: " + $wrappers.size()); end The output is (by version): 4.0.0 TestMemberOf: 0 TestEval1: 0 TestEval2: 2 4.0.1 TestMemberOf: 0 TestEval1: 2 TestEval2: 2 4.0.2.SNAPSHOT (taken 9/18/07) TestMemberOf: 0 TestEval1: 2 TestEval2: 2 The correct output should be: TestMemberOf: 2 TestEval1: 2 TestEval2: 2 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira