[jboss-jira] [JBoss JIRA] Updated: (JBRULES-3161) CEP - event both in and out of time window at the same time

[Radai Rosenblatt (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Radai Rosenblatt updated JBRULES-3161:
--------------------------------------

    Description: 
given this object:

public class Event {
    private Date started;
    private Date finished;
    private long duration;
    //getters and setters
}

the following drools code:

declare Event
    @role( event )
    @duration ( duration )
    @timestamp( started )
end

rule "Event Exists In Window"
when
    $eventOne : Event() over window:time( 1h ) from entry-point "Event Stream"
then
    //nothing
end

rule "No Event Exists In Window"
when
    not ( Event() over window:time( 1h ) from entry-point "Event Stream" )
then
    //nothing
end

and the following scenario:

[miserable attempt at ascii art replaced by attached image]

(an event at time T that start at T-1.5h and ends at T+1h)

both of the above rules fire. im not sure which of them _should_ fire for this scenario, but im pretty sure its either one or the other (to my understanding the conditions are logically exclusive - there either exists an event in the window or there doesnt)

  was:
given this object:

public class Event {
    private Date started;
    private Date finished;
    private long duration;
    //getters and setters
}

the following drools code:

declare Event
    @role( event )
    @duration ( duration )
    @timestamp( started )
end

rule "Event Exists In Window"
when
    $eventOne : Event() over window:time( 1h ) from entry-point "Event Stream"
then
    //nothing
end

rule "No Event Exists In Window"
when
    not ( Event() over window:time( 1h ) from entry-point "Event Stream" )
then
    //nothing
end

and the following scenario:

      now-1.5h          the event             now+1h 
         |---------------------------------------|   
                   the window                        
              |------------------|                   
                                                     
---------------------------------|-------------> T   
                                now                  
(an event at time T that start at T-1.5h and ends at T+1h)

both of the above rules fire. im not sure which of them _should_ fire for this scenario, but im pretty sure its either one or the other (to my understanding the conditions are logically exclusive - there either exists an event in the window or there doesnt)



> CEP - event both in and out of time window at the same time
> -----------------------------------------------------------
>
>                 Key: JBRULES-3161
>                 URL: https://issues.jboss.org/browse/JBRULES-3161
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core
>    Affects Versions: 5.2.0.Final
>         Environment: jre 6u24, windows 7 x64
>            Reporter: Radai Rosenblatt
>            Assignee: Mark Proctor
>            Priority: Critical
>         Attachments: droolsbug.zip, illustration.jpg
>
>
> given this object:
> public class Event {
>     private Date started;
>     private Date finished;
>     private long duration;
>     //getters and setters
> }
> the following drools code:
> declare Event
>     @role( event )
>     @duration ( duration )
>     @timestamp( started )
> end
> rule "Event Exists In Window"
> when
>     $eventOne : Event() over window:time( 1h ) from entry-point "Event Stream"
> then
>     //nothing
> end
> rule "No Event Exists In Window"
> when
>     not ( Event() over window:time( 1h ) from entry-point "Event Stream" )
> then
>     //nothing
> end
> and the following scenario:
> [miserable attempt at ascii art replaced by attached image]
> (an event at time T that start at T-1.5h and ends at T+1h)
> both of the above rules fire. im not sure which of them _should_ fire for this scenario, but im pretty sure its either one or the other (to my understanding the conditions are logically exclusive - there either exists an event in the window or there doesnt)

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