[jira] [Commented] (SLING-8411) Provide a way to bifurcat a repository path to a provider mount

["Karl Pauls (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SLING-8411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16836447#comment-16836447 ] 

Karl Pauls commented on SLING-8411:
-----------------------------------

The provided pull request implements this by introducing the concept of a RepositoryMount. In short, the base will look for RepositoryMount services published with a RepositoryMount.MOUNT_POINTS_KEY service property (for the subpaths to take over). While one is present, it will wrap the repositories created with a wrapper that will bifurcate requests to the actual repository and the mount according to the mount points.

[~cziegeler], does that look good to you?

> Provide a way to bifurcat a repository path to a provider mount
> ---------------------------------------------------------------
>
>                 Key: SLING-8411
>                 URL: https://issues.apache.org/jira/browse/SLING-8411
>             Project: Sling
>          Issue Type: Improvement
>          Components: JCR
>    Affects Versions: JCR Base 3.0.6
>            Reporter: Karl Pauls
>            Assignee: Karl Pauls
>            Priority: Major
>             Fix For: JCR Base 3.0.8
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> While one would normally use a resource provider to extend the content tree, sometimes, that can be not enough a code might make assumptions about the resources being actually being backed by JCR. This can be problematic as for example, a given resource can not necessarily be adapted to a Node nor be found via a Session.
> Hence, a similar approach on the JCR level allowing developers to mount content into sub trees of the repository itself can be helpful to be able to support these kind of usecase. We should provide a hook for a repository mount that takes over a given subpath by wrapping repositories returned by the base and dispatching to the mount when the request is for a given subpath.



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