[jboss-jira] [JBoss JIRA] (DROOLS-4898) Accumulates: min does not work after retracting fact.

[Hiroko Miura (Jira)]

Hiroko Miura created DROOLS-4898:
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             Summary: Accumulates: min does not work after retracting fact.
                 Key: DROOLS-4898
                 URL: https://issues.redhat.com/browse/DROOLS-4898
             Project: Drools
          Issue Type: Bug
          Components: core engine
    Affects Versions: 7.31.0.Final, 7.26.0.Final
            Reporter: Hiroko Miura
            Assignee: Mario Fusco


The following rules does not work with specific facts.

{noformat}
rule "rule1_long"
    when
        accumulate( Fact( $longVal: longVal), $minVal : min($longVal))
        accumulate( Fact( $longVal2: longVal, $longVal2 > $minVal), $minVal2 : min($longVal2))

        $minFact: Fact( longVal == $minVal)
        $minFact2: Fact( longVal == $minVal2)

    then
		System.out.println("Rule ["+kcontext.getRule().getName()+ "] fires!");        
		Long $diff = (Long)$minVal2 - (Long)$minVal;
		$minFact2.setDiff($diff);
//		update($minFact2);
 		String errmsg = $diff == 0?  " !!!!! ERROR !!!!!" : "";
		System.out.println( drools.getRule().getName() + " diff：" + $minFact2.getLongVal()  + " - " + $minFact.getLongVal() + " = " + $diff + errmsg);
		System.out.println("\tretract <= "+$minFact );
		retract($minFact);			

end
{noformat}

There seems to be 2 kind of issues (root cause might be same though).
- 2nd accumulate return same min value with 1st one. 
- rule fire count is less than expected.

This does not work with specific set of facts, but works with another set of facts.
If update is called for the fact like above commented out line, this does not happen.







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