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https://issues.apache.org/jira/browse/JCR-4046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15602225#comment-15602225
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Carsten Ziegeler commented on JCR-4046:
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First of all, you don't know if a pattern is targetting a file, assume
{noformat}
/**/*.*
{noformat}
Then if you have a listener for /libs (no pattern matching), you still want to
have the change be reported on the file node, not on the jcr:content node.
I really want to avoid a read in the listener to handle this case
> Improve observation of files
> ----------------------------
>
> Key: JCR-4046
> URL: https://issues.apache.org/jira/browse/JCR-4046
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: core
> Reporter: Carsten Ziegeler
>
> A file in JCR is represented by at least two nodes, the nt:file node and a
> child node named jcr:content holding the contents of the file (and metadata).
> This has the consequence that if the contents of a file changes, a change
> event of the jcr:content node is reported - but not of the nt:file node.
> This makes creating listeners listening for changes in files complicated, as
> you can't use the file name to filter - especially with glob patterns (see
> JCR-4044) this becomes troublesome.
> In addition, whenever you get a change for a jcr:content node, you have to
> check if the parent is a nt:file node and decide based on the result.
> It would be great to have a flag on the JackrabbitEventFilter to enable
> smarter reporting just for nt:files: if a property on jcr:content is changed,
> a change to the nt:file node is reported.
> See also SLING-6163 and OAK-4940
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