Scenario:
5.3.0, STREAM, fireUntilHalt() run in separate thread, AlertEvent events inserted every 1 or two seconds.
The following rules should retract ClusterLink facts referencing the AlertCluster that is
selected by the DissolveCluster fact. As soon as there is no such ClusterLink any
more, the AlertCluster and the DissolveCluster facts are to be retracted:
rule "remove link to dissolved AlertCluster"
agenda-group "dissolve"
auto-focus true
when
DissolveCluster( $cluster: cluster )
AlertCluster( this == $cluster )
$clusterLink: ClusterLink( $alertEvent: alertEvent, alertCluster == $cluster )
AlertEvent( this == $alertEvent ) from entry-point "Cluster Stream"
then
System.out.println( "Dissolving...!" );
retract( $clusterLink );
end
rule "clean up after dissolving AlertCluster"
agenda-group "dissolve"
when
$dissolveCluster: DissolveCluster( $cluster: cluster )
$alertCluster: AlertCluster( this == $cluster )
not ClusterLink( alertCluster == $cluster )
then
System.out.println( "Dissolve finished." );
retract( $alertCluster );
retract( $dissolveCluster );
end
Does anybody see anything wrong with these rules?
The problem is that, after all ClusterLinks have been removed, the final clean-up rule
is not executed.
Luckily, the last CE in the first rule isn't necessary. If "AlertEvent(...) from ..."
is removed, both rules work correctly.
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