Varun Thacker created SOLR-5285:
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Summary: 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: 5.0, 4.6
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_luc...@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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