[jira] [Commented] (SOLR-12441) Add deeply nested documents URP

["mosh (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-12441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16522188#comment-16522188 ] 

mosh commented on SOLR-12441:
-----------------------------

I have opened a new [pull request|https://github.com/apache/lucene-solr/pull/410/] for this ticket

> 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: 10m
>  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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