[jboss-jira] [JBoss JIRA] (DROOLS-4468) Invalid result with collect, mvel and ForceEagerActivationOption.YES

[Mario Fusco (Jira)]

     [ https://issues.jboss.org/browse/DROOLS-4468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco updated DROOLS-4468:
--------------------------------
    Sprint: 2019 Week 35-37


> Invalid result with collect, mvel and ForceEagerActivationOption.YES
> --------------------------------------------------------------------
>
>                 Key: DROOLS-4468
>                 URL: https://issues.jboss.org/browse/DROOLS-4468
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 7.25.0.Final
>            Reporter: Martin Weiler
>            Assignee: Mario Fusco
>            Priority: Major
>         Attachments: case02445433-testcase.zip
>
>
> A rule updates a list in a fact:
> {noformat}
> rule "Init"
>     dialect "mvel"
>     when
>         $fl: FactWithList(items.size()==0)
>     then
>         $fl.getItems().add("A");
>         $fl.getItems().add("B");
>         update($fl);
> end
> {noformat}
> A second rule verifies if other facts exist, matching the items in the updated list:
> {noformat}
> rule "Expected Outcome"
>     dialect "mvel"
>     when
>         $fl: FactWithList($itemList : items != null)
>         $l: java.util.ArrayList(size > 0) from collect(FactWithString($itemList contains stringValue));
>     then
>         System.out.println("--> Rule: " + kcontext.getRule().getName() + " fired, " + $fl + ", collect list: " + $l.size());
> end
> {noformat}
> This rule is *not* fired if 
> * mvel dialect is used *and*
> * Drools is executed with {{ForceEagerActivationOption.YES}} (jBPM use case)
> Note: This worked in 7.17 and earlier!



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