[jboss-jira] [JBoss JIRA] Created: (JBRULES-2773) Rule delayed although temporal operator within not() refers to past events
Rule delayed although temporal operator within not() refers to past events
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Key: JBRULES-2773
URL: https://jira.jboss.org/browse/JBRULES-2773
Project: Drools
Issue Type: Bug
Security Level: Public (Everyone can see)
Affects Versions: 5.1.1.FINAL
Reporter: Wolfgang Laun
Assignee: Mark Proctor
Fix For: 5.2.0.M1
The .drl:
declare Leave
@role( event )
@timestamp( timestamp )
end
rule "XXX Leave not !="
when
$leave: Leave()
not Leave( this != $leave )
then
System.out.println( "XXX only one Leave - not !=" );
end
rule "YYY Leave not after"
when
$leave: Leave()
not Leave( this before $leave )
then
System.out.println( "YYY only one Leave - not before" );
end
A) The pseudo-clock is advanced according to the timestamp; then
exactly one event Leave is inserted; then fireAllRules() is called.
1) Running in CLOUD mode, both rules fire.
2) But running in STREAM mode, ONLY rule XXX fires.
B) Like A, but the session clock is advanced by (at least) 1ms
prior to calling fireAllRules().
3) Either mode, both rules fire.
I think that A2) is incorrect; why should passing another msec change the logic? Rule YYY
matches by looking into the past, so the "rule activation delay" described in
2.5.2.2. Negative Patterns in Stream Mode should not apply because the default parameter
for before is [1ms,...].
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