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https://issues.apache.org/jira/browse/SOLR-12519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16595903#comment-16595903
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mosh commented on SOLR-12519:
-----------------------------
{quote}The actual number of docs returned could be more than the limit but it
shouldn't be more than the number of intermediate parents. In the example above
with limit 2, we'd get docB and docC with child docC.1 WDYT mosh?{quote}
Sure thing,
just pushed new commits with this new logic.
> Support Deeply Nested Docs In Child Documents Transformer
> ---------------------------------------------------------
>
> Key: SOLR-12519
> URL: https://issues.apache.org/jira/browse/SOLR-12519
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: mosh
> Priority: Major
> Attachments: SOLR-12519-fix-solrj-tests.patch,
> SOLR-12519-no-commit.patch, SOLR-12519.patch
>
> Time Spent: 24h 40m
> Remaining Estimate: 0h
>
> As discussed in SOLR-12298, to make use of the meta-data fields in
> SOLR-12441, there needs to be a smarter child document transformer, which
> provides the ability to rebuild the original nested documents' structure.
> In addition, I also propose the transformer will also have the ability to
> bring only some of the original hierarchy, to prevent unnecessary block join
> queries. e.g.
> {code} {"a": "b", "c": [ {"e": "f"}, {"e": "g"} , {"h": "i"} ]} {code}
> Incase my query is for all the children of "a:b", which contain the key "e"
> in them, the query will be broken in to two parts:
> 1. The parent query "a:b"
> 2. The child query "e:*".
> If the only children flag is on, the transformer will return the following
> documents:
> {code}[ {"e": "f"}, {"e": "g"} ]{code}
> In case the flag was not turned on(perhaps the default state), the whole
> document hierarchy will be returned, containing only the matching children:
> {code}{"a": "b", "c": [ {"e": "f"}, {"e": "g"} ]{code}
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