[jboss-jira] [JBoss JIRA] (DROOLS-900) java.lang.IncompatibleClassChangeError error while using HashSets

[RH Bugzilla Integration (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

RH Bugzilla Integration updated DROOLS-900:
-------------------------------------------
    Bugzilla References: https://bugzilla.redhat.com/show_bug.cgi?id=1278059
        Bugzilla Update: Perform


> java.lang.IncompatibleClassChangeError error while using HashSets
> -----------------------------------------------------------------
>
>                 Key: DROOLS-900
>                 URL: https://issues.jboss.org/browse/DROOLS-900
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 5.6.0.Final
>            Reporter: Pravasis Pattnaik
>            Assignee: Mario Fusco
>            Priority: Minor
>             Fix For: 6.3.0.Final
>
>         Attachments: compiled-drl.txt, req.txt
>
>
> In the compiled drl file we were using (Sets.newHashSet(e1,e2,..)).contains(input) then we get an exception java.lang.IncompatibleClassChangeError: Class XYZ does not implement the requested interface java.util.Collection on large input sets.Here XYZ is our input ruleRequest to be evaluated. If I change it to Sets.newHashSet(e1,e2,..).contains(input) it fixes everything.



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