[jira] [Commented] (OAK-5022) add includeSubtreeOnDelete flag to OakEventFilter

["Michael Marth (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-5022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15620015#comment-15620015 ] 

Michael Marth commented on OAK-5022:
------------------------------------

2 comments:

* Hooray for being able (in the application) to access property values of deleted nodes. This is a long standing feature request - which should be rather doable in MVCC.
* Re "includeSubtreeOnRemove": need to careful to not make this a very expensive operation for large subtrees. Could this be handled lazily?

> add includeSubtreeOnDelete flag to OakEventFilter
> -------------------------------------------------
>
>                 Key: OAK-5022
>                 URL: https://issues.apache.org/jira/browse/OAK-5022
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: jcr
>    Affects Versions: 1.5.12
>            Reporter: Stefan Egli
>            Assignee: Stefan Egli
>
> (Originally reported as JCR-4037, but moved to Oak as a result of introducing the OakEventFilter in OAK-5013. From the original description: )
> In some cases of observation it would be useful to receive events of child node or properties of a parent/grandparent that was deleted. Currently (in Oak at least) one only receives a deleted event for the node that was deleted and none of the children.
> Suggesting to (re)introduce a flag, eg as follows to the JackrabbitEventFilter:
> {code}
> boolean includeSubtreeOnRemove;
> {code}
> (Open for any better name of course)



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