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https://issues.apache.org/jira/browse/SOLR-12441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16533427#comment-16533427
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mosh commented on SOLR-12441:
-----------------------------
Another thought has popped into my mind.
{quote}{code:javascript}{ "from": { "name": "Peyton Manning", "id": "X18" } }
{code}{quote}
When recreating the original JSON structure, there is no way to know whether a
single child was inside an array or not.
We could also index single children such as the one above with this
_NEST_PATH_: {code:javascript}from,s,{code}
we could have a special character to indicate this child was not inside an
array when indexed.
I just picked the char 's' because it is short for single, perhaps someone
might have a better idea.
> Add deeply nested documents URP
> -------------------------------
>
> Key: SOLR-12441
> URL: https://issues.apache.org/jira/browse/SOLR-12441
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: mosh
> Assignee: David Smiley
> Priority: Major
> Time Spent: 5.5h
> Remaining Estimate: 0h
>
> As discussed in
> [SOLR-12298|https://issues.apache.org/jira/browse/SOLR-12298], there ought to
> be an URP to add metadata fields to childDocuments in order to allow a
> transformer to rebuild the original document hierarchy.
> {quote}I propose we add the following fields:
> # __nestParent__
> # _nestLevel_
> # __nestPath__
> __nestParent__: This field wild will store the document's parent docId, to be
> used for building the whole hierarchy, using a new document transformer, as
> suggested by Jan on the mailing list.
> _nestLevel_: This field will store the level of the specified field in the
> document, using an int value. This field can be used for the parentFilter,
> eliminating the need to provide a parentFilter, which will be set by default
> as "_level_:queriedFieldLevel".
> _nestLevel_: This field will contain the full path, separated by a specific
> reserved char e.g., '.'
> for example: "first.second.third".
> This will enable users to search for a specific path, or provide a regular
> expression to search for fields sharing the same name in different levels of
> the document, filtering using the level key if needed.
> {quote}
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