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From "Stefan Guggisberg (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-2408) Mixin removal exception
Date Wed, 25 Nov 2009 13:30:39 GMT

    [ https://issues.apache.org/jira/browse/JCR-2408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12782426#action_12782426
] 

Stefan Guggisberg commented on JCR-2408:
----------------------------------------

you should always be able to remove a mixin which has been previously added.

how conflicts are resolved is an implementation choice. 

when removing a mixin M declaring a property P, the current implementation first tries
migrate P to a definition declared by the resulting effective node type. if this fails,
the property is removed.

> Mixin removal exception
> -----------------------
>
>                 Key: JCR-2408
>                 URL: https://issues.apache.org/jira/browse/JCR-2408
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: 2.0-beta1
>            Reporter: Alexandre Capt
>
> When trying to remove a mixin from a non nt:unstructured node (in my case nt:resource),
you get the following exception:
> Unable to alter mixin types: javax.jcr.nodetype.ConstraintViolationException: no matching
property definition found for {http://www.day.com/jcr/cq/1.0}lastRolledout
> lastRolledout property is defined by the mixin cq:LiveRelationship that I am trying to
remove.

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