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Date: Mon, 23 May 2011 16:23:48 +0000 (UTC)
From: "Michael McCandless (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Updated] (LUCENE-2454) Nested Document query support
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     [ https://issues.apache.org/jira/browse/LUCENE-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-2454:
---------------------------------------

    Attachment: LUCENE-2454.patch

Attached patch, pulling out just NestedDocumentQuery from the zip
file:

  * I put NestedDocumentQuery and its test case in contrib/queries,
    under oal.search.nested

  * Changed scoreMode to final int that's passed to ctor

  * Brought everything up to current trunk (scoring is per-segment,
    etc.).this also moves parentBits (previously mutable on the
    original query) into the scorer

  * Simplified the test case -- instead of parsing XHTML resumes it
    just directly builds up a toy example of parent+child docs.

  * Removed @author tags, fixed code style (indent to 2 spaces, {}s,
    newlines, etc.), etc.

I put a few nocommits in that still need resolving...

My patch doesn't include XMLQueryParser integration; I think we should
do this as separate issue?

I think PerParentLimitedQuery is the same functionality as grouping,
right?  Except, it only supports relevance withinGroup sort, but it
operates only w/ a parent filter (whereas our grouping impls so far
require a more-RAM-costly DocTermsIndex FC entry of the field you are
grouping on).  I think we should somehow merge this w/ the single pass
grouping collector (LUCENE-3129)?


> Nested Document query support
> -----------------------------
>
>                 Key: LUCENE-2454
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2454
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: core/search
>    Affects Versions: 3.0.2
>            Reporter: Mark Harwood
>            Assignee: Mark Harwood
>            Priority: Minor
>         Attachments: LUCENE-2454.patch, LuceneNestedDocumentSupport.zip
>
>
> A facility for querying nested documents in a Lucene index as outlined in http://www.slideshare.net/MarkHarwood/proposal-for-nested-document-support-in-lucene

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