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From "Varun Thacker (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-5285) Solr response format should support child Docs
Date Tue, 13 May 2014 16:03:15 GMT

     [ https://issues.apache.org/jira/browse/SOLR-5285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Varun Thacker updated SOLR-5285:
--------------------------------

    Attachment: SOLR-5285.patch
                javabin_backcompat_child_docs.bin

Updated patch with the binary file is attached separately.

Still need to add the randomized tests.

> Solr response format should support child Docs
> ----------------------------------------------
>
>                 Key: SOLR-5285
>                 URL: https://issues.apache.org/jira/browse/SOLR-5285
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Varun Thacker
>             Fix For: 4.9, 5.0
>
>         Attachments: SOLR-5285.patch, SOLR-5285.patch, SOLR-5285.patch, SOLR-5285.patch,
SOLR-5285.patch, SOLR-5285.patch, SOLR-5285.patch, SOLR-5285.patch, javabin_backcompat_child_docs.bin
>
>
> Solr has added support for taking childDocs as input ( only XML till now ). It's currently
used for BlockJoinQuery. 
> I feel that if a user indexes a document with child docs, even if he isn't using the
BJQ features and is just searching which results in a hit on the parentDoc, it's childDocs
should be returned in the response format.
> [~hossman_lucene@fucit.org] on IRC suggested that the DocTransformers would be the place
to add childDocs to the response.
> Now given a docId one needs to find out all the childDoc id's. A couple of approaches
which I could think of are 
> 1. Maintain the relation between a parentDoc and it's childDocs during indexing time
in maybe a separate index?
> 2. Somehow emulate what happens in ToParentBlockJoinQuery.nextDoc() - Given a parentDoc
it finds out all the childDocs but this requires a childScorer.
> Am I missing something obvious on how to find the relation between a parentDoc and it's
childDocs because none of the above solutions for this look right.



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