[jira] [Commented] (JCR-4037) add includeSubtreeOnDelete flag to JackrabbitEventFilter

["Stefan Egli (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JCR-4037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15602215#comment-15602215 ] 

Stefan Egli commented on JCR-4037:
----------------------------------

One use case for this is the following scenario: consider a listener that wants to be informed if a particular _property_ was deleted and what the old _value_ of that property was (eg when that property represents a reference to outside the repository). The support for getting the old value of the property is there: the info map contains the {{beforeValue}}. However, a listener is only informed if there is a direct filter match, ie if one of the ancestors is deleted, then you don't get an event. And that's what this ticket is about.

> add includeSubtreeOnDelete flag to JackrabbitEventFilter
> --------------------------------------------------------
>
>                 Key: JCR-4037
>                 URL: https://issues.apache.org/jira/browse/JCR-4037
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: observation
>    Affects Versions: 2.13.3
>            Reporter: Stefan Egli
>
> 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 includeSubtreeOnDelete;
> {code}
> (Open for any better name of course)
> /cc [~mduerig], [~mreutegg]



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