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https://issues.apache.org/jira/browse/LUCENE-3938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn van Groningen updated LUCENE-3938:
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Attachment: LUCENE-3938.patch
Updated patch.
* Added simple test case that shows a simple use case.
* Removed groupParent and groupChildren in favor of
disAllowHitsFromTheSameRelation in ParentChildCommand class.
> Add query time parent child search
> ----------------------------------
>
> Key: LUCENE-3938
> URL: https://issues.apache.org/jira/browse/LUCENE-3938
> Project: Lucene - Java
> Issue Type: New Feature
> Components: modules/join
> Reporter: Martijn van Groningen
> Attachments: LUCENE-3938.patch, LUCENE-3938.patch
>
>
> At the moment there is support for index time parent child search with two
> queries implementations and a collector. The index time parent child search
> requires that documents are indexed in a block, this isn't ideal for
> updatability. For example in the case of tv content and subtitles (both being
> separate documents). Updating already indexed tv content with subtitles would
> then require to also re-index the subtitles.
> This issue focuses on the collector part for query time parent child search.
> I started a while back with implementing this. Basically a two pass search
> performs a parent child search. In the first pass the top N parent child
> documents are resolved. In the second pass the parent or top N children are
> resolved (depending if the hit is a parent or child) and are associated with
> the top N parent child relation documents. Patch will follow soon.
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