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https://issues.apache.org/jira/browse/JCR-2688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12893204#action_12893204
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Alexander Klimetschek commented on JCR-2688:
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1. is the "right" way: if jackrabbit's JCR API implementation (core) depends on 
jcr-commons functionality, jcr-commons itself can't really offer functionality 
that depends on the JCR API (and on an API implementation to run/test it). But 
that extends to existing utilities in jcr-commons, I guess.

> Provide utility for handling large number of child nodes/properties
> -------------------------------------------------------------------
>
>                 Key: JCR-2688
>                 URL: https://issues.apache.org/jira/browse/JCR-2688
>             Project: Jackrabbit Content Repository
>          Issue Type: New Feature
>          Components: jackrabbit-jcr-commons
>    Affects Versions: 2.2.0
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>         Attachments: JCR-2688.patch
>
>
> Jackrabbit does not cope well with 'flat' hierarchies. That is with 
> hierarchies where a node has many child nodes and/or properties. The current 
> recommendation for such situations is to manually add intermediate nodes. 
> It would be nice to have an utility which adds/removes intermediate nodes as 
> needed and expose a 'flat' view to users. Such an utility should:
> - expose a large number of nodes/properties as sequence
> - parametrize the order of how nodes/properties appear in the sequence
> - provide methods to lookup/add/remove nodes/properties by key 
> - organize the node/properties in the underlying JCR hierarchy in a way which 
> is both efficient for above operations and easily understandable to users 
> looking at the hierarchy. 

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