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https://issues.apache.org/jira/browse/JCR-2743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12907598#action_12907598
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Michael Dürig commented on JCR-2743:
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Here is a test proving the case:
group1 = userMgr.createGroup(getTestPrincipal());
group2 = userMgr.createGroup(getTestPrincipal());
group3 = userMgr.createGroup(getTestPrincipal());
group1.addMember(getTestUser(superuser));
group2.addMember(getTestUser(superuser));
assertTrue(group1.addMember(group2));
assertTrue(group2.addMember(group3));
assertFalse(group3.addMember(group1));
the last line throws a ClassCastException
> ClassCastException in GroupImpl.isCyclicMembership
> --------------------------------------------------
>
> Key: JCR-2743
> URL: https://issues.apache.org/jira/browse/JCR-2743
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: jackrabbit-core
> Affects Versions: 2.2.0
> Reporter: Michael Dürig
> Assignee: Michael Dürig
>
> Given three groups and one user with the following membership relation
> group1 > group2 > group3
> group2 > user
> where x > y means x contains y.
> group3.addMember(group1) throws a ClassCastException.
> The reason is that the search type (i.e. UserManager.SEARCH_TYPE_GROUP) is
> not honored correctly when constructing the transitive membership relation.
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