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https://issues.apache.org/jira/browse/OAK-993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763137#comment-13763137
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Michael Dürig commented on OAK-993:
-----------------------------------
For {{Item.save()}} I changed the default behaviour such that the operation
falls back to {{Session.save()}} and logs a warning whenever a transient
modifications exist outside the sub-tree of the respective item. Running with
{{-Ditem-save-does-session-save=false}} disables the fall back to
{{Session.save}} but rather throws an
{{UnsupportedRepositoryOperationException}} in the case where transient
modifications exist out side of the item's sub-tree.
See http://svn.apache.org/r1521529
> Improve backward compatibility for Item.save and Item.refresh
> -------------------------------------------------------------
>
> Key: OAK-993
> URL: https://issues.apache.org/jira/browse/OAK-993
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: jcr
> Reporter: Michael Dürig
>
> As described in OAK-132 and OAK-141, both methods are implemented by
> delegating back to the respective {{Session}} methods and writing a warning
> to the log. This might introduce difficult to diagnose errors for those
> clients that rely on being able to only save/refresh parts of the transient
> space. A better solution might be to detect whether a save/refresh covers all
> transient changes and only then delegate back to the respective {{Session}}
> operation but throw an {{UnsupportedRepositoryException}} otherwise.
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