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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-169) Support orderable nodes
Date Fri, 06 Jul 2012 13:30:36 GMT

    [ https://issues.apache.org/jira/browse/OAK-169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13407987#comment-13407987

Thomas Mueller commented on OAK-169:

Carstens use case for "log entries" seems quite common. More generally, a sequence of nodes,
with a incremental name or timestamp name (2012-01-12 12:03:45.0, 2012-01-12 12:03:46.3,...).
This matches OAK-129 (Add support for auto creating node names). Having to use queries seems
complicated. Of course the known workaround (use a multi-level structure to avoid flat nodes)
is possible but then I think we agreed we want to support "many child nodes".

I believe most uses cases could be solved if child node lists are automatically ordered by
name. That means, if node are not manually ordered, they are sorted by name. This matches
what many file systems do, is easy to understand and use, and easy to implement (including
support for huge number of child nodes).
> Support orderable nodes
> -----------------------
>                 Key: OAK-169
>                 URL: https://issues.apache.org/jira/browse/OAK-169
>             Project: Jackrabbit Oak
>          Issue Type: New Feature
>          Components: jcr
>            Reporter: Jukka Zitting
> There are JCR clients that depend on the ability to explicitly specify the order of child
nodes. That functionality is not included in the MicroKernel tree model, so we need to implement
it either in oak-core or oak-jcr using something like an extra (hidden) {{oak:childOrder}}
property that records the specified ordering of child nodes. A multi-valued string property
is probably good enough for this.

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