## Uses of Class
org.apache.lucene.facet.taxonomy.OrdinalsReader

- Packages that use OrdinalsReader
  Package | Description
  --- | ---
  org.apache.lucene.facet.taxonomy | Taxonomy of Categories.

- - ### Uses of OrdinalsReader in org.apache.lucene.facet.taxonomy

    Subclasses of OrdinalsReader in org.apache.lucene.facet.taxonomy
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `CachedOrdinalsReader` | Deprecated. Custom binary encodings for taxonomy ordinals are no longer supported starting with Lucene 9
    `class` | `DocValuesOrdinalsReader` | Deprecated. Custom binary encodings for taxonomy ordinals are no longer supported starting with Lucene 9

    Methods in org.apache.lucene.facet.taxonomy that return OrdinalsReader
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected OrdinalsReader` | OrdinalMappingLeafReader.`getOrdinalsReader​(String field)` | Deprecated. Custom binary formats are no longer directly supported for taxonomy faceting starting in Lucene 9

    Constructors in org.apache.lucene.facet.taxonomy with parameters of type OrdinalsReader
    Constructor | Description
    --- | ---
    `CachedOrdinalsReader​(OrdinalsReader source)` | Deprecated. Sole constructor.
    `FacetLabelReader​(OrdinalsReader ordsReader, LeafReaderContext readerContext)` | Deprecated. Custom binary encodings for taxonomy ordinals are no longer supported starting with Lucene 9
    `TaxonomyFacetCounts​(OrdinalsReader ordinalsReader, TaxonomyReader taxoReader, FacetsConfig config, FacetsCollector fc)` | Deprecated. Create `TaxonomyFacetCounts`, which also counts all facet labels.
    `TaxonomyFacetFloatAssociations​(OrdinalsReader ordinalsReader, TaxonomyReader taxoReader, FacetsConfig config, FacetsCollector fc, AssociationAggregationFunction aggregationFunction, DoubleValuesSource valuesSource)` | Deprecated. Custom binary encodings for taxonomy ordinals are no longer supported starting with Lucene 9
    `TaxonomyFacetSumValueSource​(OrdinalsReader ordinalsReader, TaxonomyReader taxoReader, FacetsConfig config, FacetsCollector fc, DoubleValuesSource vs)` | Deprecated. Custom binary encodings for taxonomy ordinals are no longer supported starting with Lucene 9