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https://issues.apache.org/jira/browse/OAK-2530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14325706#comment-14325706
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Chetan Mehrotra commented on OAK-2530:
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Patch looks fine but it looks like it mixes changes required for OAK-2529. For
e.g. changes in {{EquiJoinConditionImpl}} are probably related to supporting
"!=" constraint
> Support IS NULL based property restrictions in the query engine
> ---------------------------------------------------------------
>
> Key: OAK-2530
> URL: https://issues.apache.org/jira/browse/OAK-2530
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: query
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Attachments: OAK-2530.patch
>
>
> Currently queries involving IS NULL should be supported by the query engine,
> so that an index implementation can provide an optimization for it (possibly
> similar to a function based index).
> See OAK-2517 for details
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