Details
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Bug
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Resolution: Done
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Major
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4.0.0.GA, 4.0.1
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None
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None
Description
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