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From "J.L. Hill (JIRA)" <>
Subject [jira] [Commented] (SOLR-2412) Multipath hierarchical faceting
Date Fri, 04 Apr 2014 23:19:20 GMT


J.L. Hill commented on SOLR-2412:

After spending the past few days on this, I am a bit stuck on how to limit the facets returned
to a sublevel of the facets. For example, from the example above, only returning the facets
L1_T1 and those below it. From normal faceting, I think it would be done via facet.prefix=L0_T1/L1_T1
I tried facet.prefix and efacet.prefix. 
Thanks in advance.

> Multipath hierarchical faceting
> -------------------------------
>                 Key: SOLR-2412
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: SearchComponents - other
>    Affects Versions: 4.0
>         Environment: Fast IO when huge hierarchies are used
>            Reporter: Toke Eskildsen
>              Labels: contrib, patch
>         Attachments: SOLR-2412.patch, SOLR-2412.patch, SOLR-2412.patch, SOLR-2412.patch,
SOLR-2412.patch, SOLR-2412.patch, SOLR-2412.patch
> Hierarchical faceting with slow startup, low memory overhead and fast response. Distinguishing
features as compared to SOLR-64 and SOLR-792 are
>   * Multiple paths per document
>   * Query-time analysis of the facet-field; no special requirements for indexing besides
retaining separator characters in the terms used for faceting
>   * Optional custom sorting of tag values
>   * Recursive counting of references to tags at all levels of the output
> This is a shell around LUCENE-2369, making it work with the Solr API. The underlying
principle is to reference terms by their ordinals and create an index wide documents to tags
map, augmented with a compressed representation of hierarchical levels.

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