[rules-users] problem with pesisted stateful knowledge session and Length Sliding Window

[henrychen]

Hi all,

  I am facing a problem with  persisted stateful knowledge
session, please help me. My rule is listed as below:

package com.sample

import com.sample.Event;

import java.util.List;


declare Event

  @role(event)

end


rule "test"

  when

    $list : List() from collect(Event() over window:
length(2))

  then

    System.out.println("----print out in rule, size of
the list collected from window is:" + $list.size());

end

  The problem is,
 

when use a normal stateful session(created by the calling
kbase.newStatefulKnowledgeSession()), *when a third fact inserted, the
session working memory only retains list of 2, as expected.*

when use a persisted stateful session(created by the calling
JPAKnowledgeService.newStatefulKnowledgeSession()), insert 2 facts first.
Then restore this session by
JPAKnowledgeService.loadStatefulKnowledgeSession(), and *insert a third
fact, the session working memory grows to list of 3?* 


  By the way, I am using version 5.2.0.Final. And after I upgrade
to version 5.4.0.Final, the test result of persisted session becomes to
normal.*The attachment is my test program and you can repeat it.*

   I want to ask you if there is something missing that I need to
do in 5.2.0.Final?

   Thank you in advance, any help will be appreciated. 
http://drools.46999.n3.nabble.com/file/n4019766/drools-session-persis-demo.zip
drools-session-persis-demo.zip 



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