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https://issues.apache.org/jira/browse/OAK-1325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13873364#comment-13873364
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Alex Parvulescu commented on OAK-1325:
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I'll pile on to the potential scenarios and add support for geospatial queries.
It would be very nice to allow for the addition of new custom functions without
having to recompile & release the query engine (hint custom functions defined
in each index impl).
> Support native pass-through queries (e.g. Lucene)
> -------------------------------------------------
>
> Key: OAK-1325
> URL: https://issues.apache.org/jira/browse/OAK-1325
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: oak-lucene, oak-solr, query
> Reporter: Thomas Mueller
>
> The query engine currently supports XPath and SQL-2 queries as documented by
> the JCR 2.0 specification. Some queries require syntax that goes beyond the
> JCR 2.0 spec, even thought the feature is supported by the query index. One
> example is "MoreLikeThis" in OAK-1286.
> We would like an extension point so that a user of Oak can use the feature of
> the query index. There are multiple options:
> * Use a separate, custom query language (not XPath or SQL-2)
> * Extend the XPath and/or SQL-2 syntax similar to "rep:excerpt()"
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