drools 规则引擎 over window:time(1d)的问题

drl文件中定义

 

package com.sample

declare Activity
@role( event )
@timestamp(txTime)
end

 

rule "totaltimessrule"
salience 1
when
$account:Account($accountnumber:accountnumber) from entry-point ActivityStream
$totaltimes:Number(intValue >= 20)from accumulate(
$Activity:Activity() over window:time(1d) from entry-point ActivityStream, count($Activity))
then
System.out.println($accountnumber);
System.out.println(drools.getRule().getName());
end

 

然后在java代码中插入的Activity的txtime（规则引擎的时间戳）全为 2011-6-1

时钟采用realtime实时时钟，执行时间为2011-6-7

采用滑动窗口over window:time(1d)按说应该取自实时时钟2011-6-7当天数据作为活动窗口数据，也就是说没有数据，按说将不会触发该规则，为啥触发了呢，而且每次执行结果具有不确定性

评论

2 楼 w800927 2011-06-08  

据说是drools的一个bug
http://drools.46999.n3.nabble.com/Re-Using-Sliding-Time-Window-usage-in-Drools-Fusion-v5-0-1-td415473.html
最后采用了

declare CurrentTime
    @role( event )
end

declare MyEvent
    @role( event )
    @timestamp(eventDateTime)
end

rule "Rule1"
when
    $now: CurrentTime() from entry-point "My Stream"
    //The following should fetch all events occurred in the last 2 seconds)
    $event: MyEvent(this before[2s, 2s] $now) from entry-point "My Stream"
then
    System.out.println($event.getEventName() + ": Event Occured!!!" +      $event.getEventDateTime().toString());
end

作为权宜之计

1 楼 w800927 2011-06-08  

后来改为stream mode还是没有解决，还在解决中