]
Francesco Peloi commented on DROOLS-707:
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Thanks [~mfusco] for the quick feedback. Totally agree on both points:
1) I wasn't completely sure this was related to the same problem of this ticket, I
prefered to start with a comment and see what you think.
2) I thought the DRLs were invalid but since in some cases were passing and some throwing
NPE and some throwing duplicate variable error I got confused :)
NullPointer when changing order of the rules
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Key: DROOLS-707
URL:
https://issues.jboss.org/browse/DROOLS-707
Project: Drools
Issue Type: Bug
Affects Versions: 5.5.0.Final, 5.6.0.Final, 6.0.0.Final, 6.0.1.Final, 6.1.0.Final,
6.2.0.CR4
Reporter: Francesco Peloi
Assignee: Mario Fusco
Fix For: 6.2.0.Final
Hi there,
we are having some serious issues with some rules, they are throwing a
NullPointerException and we don't understand why. I have tried to narrow down the
problem to the smallest rule possible, now this rule doesn't really make much sense
put like this but the real rule is more complex with more constraints. At the end the
result is the same: a NPE.
I have tried it with many Drools versions from 5.x to latest 6.3.0-SNAPSHOT.
I tested this in isolation with the minimum amount of code possible, and attached it as
well if someone wants to try it quickly.
Note that if line 2 of the when:
$a : Integer()
is moved as first line, the rule runs ok.
Please find the reproducer here:
https://groups.google.com/forum/#!topic/drools-usage/-oNqu3l4cqE