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ASF subversion and git services commented on LUCENE-9444: --------------------------------------------------------- Commit d71923065dba0b6fe275cb60bd5cffb017509827 in lucene-solr's branch refs/heads/branch_8x from goankur [ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=d719230 ] LUCENE-9444: add utility class to retrieve facet labels from the taxonomy index for a facet field (#1893) LUCENE-9444: add utility class to retrieve facet labels from the taxonomy index for a facet field so such fields do not also have to be redundantly stored in the index. Co-authored-by: Ankur Goel <goan...@amazon.com> > Need an API to easily fetch facet labels for a field in a document > ------------------------------------------------------------------ > > Key: LUCENE-9444 > URL: https://issues.apache.org/jira/browse/LUCENE-9444 > Project: Lucene - Core > Issue Type: Improvement > Components: modules/facet > Affects Versions: 8.6 > Reporter: Ankur > Priority: Major > Labels: facet > Attachments: LUCENE-9444.patch, LUCENE-9444.patch, > LUCENE-9444.v2.patch > > Time Spent: 4h 20m > Remaining Estimate: 0h > > A facet field may be included in the list of fields whose values are to be > returned for each hit. > In order to get the facet labels for each hit we need to > # Create an instance of _DocValuesOrdinalsReader_ and invoke > _getReader(LeafReaderContext context)_ method to obtain an instance of > _OrdinalsSegmentReader()_ > # _OrdinalsSegmentReader.get(int docID, IntsRef ordinals)_ method is then > used to fetch and decode the binary payload in the document's BinaryDocValues > field. This provides the ordinals that refer to facet labels in the > taxonomy.** > # Lastly TaxonomyReader.getPath(ord) is used to fetch the labels to be > returned. > > Ideally there should be a simple API - *String[] getLabels(docId)* that hides > all the above details and gives us the string labels. This can be part of > *TaxonomyFacets* but that's just one idea. > I am opening this issue to get community feedback and suggestions. > -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org