[jboss-jira] [JBoss JIRA] Updated: (JBRULES-2423) "from" does not work correctly with events in STREAM mode

[Geoffrey De Smet (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey De Smet updated JBRULES-2423:
--------------------------------------

    Fix Version/s: 5.3.0.Final
                       (was: 5.3.0.CR1)


> "from" does not work correctly with events in STREAM mode
> ---------------------------------------------------------
>
>                 Key: JBRULES-2423
>                 URL: https://issues.jboss.org/browse/JBRULES-2423
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core (fusion)
>    Affects Versions: 5.0.0.M1
>         Environment: Drools Fusion 5.0+ with engine in STREAM mode
>            Reporter: Davide Sottara
>            Assignee: Edson Tirelli
>            Priority: Critical
>              Labels: from, fusion, stream
>             Fix For: 5.3.0.Final
>
>
> In the simple test case below, Message is an instantaneous event (i.e. duration = 0) with a list of destinations.
> --------------------------------------------------------------------------------------------------------------------------------------
> declare Message
> 	@role( event )
> 	@timestamp(start)
> 	@duration(duration)
> end
>  
> rule "Hello World"
> 	when
> 		m : Message( status == Message.HELLO, $myMessage : message, $destinations : dest)
> 		$s : String() from $destinations
> 	then
> 		System.out.println( "Dear " + $s + " : >>> "  + $myMessage ); 		
> end
> --------------------------------------------------------------------------------------------------------------------------------------
> if the engine is configured to work in STREAM mode, the output is
> Dear NULL :>>> Hello World
> ...
> since the Strings extracted from the Collection "dest" have already been retracted by
> the time the rule is fired, following the retraction of the Message event. 
> The problem does not show in CLOUD mode.

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