# Package org.apache.lucene.facet.util

Various utilities for faceted search

See: Description

- Class Summary
  Class | Description
  --- | ---
  FacetsPayloadMigrationReader | A `FilterAtomicReader` for migrating a facets index which encodes category ordinals in a payload to `BinaryDocValues`.
  MultiCategoryListIterator | Iterates over multiple `CategoryListIterator`s, consuming the provided iterators in order.
  OrdinalMappingAtomicReader | A `FilterAtomicReader` for updating facets ordinal references, based on an ordinal map.
  PartitionsUtils | Utilities for partitions - sizes and such
  PrintTaxonomyStats | Prints how many ords are under each dimension.
  ResultSortUtils | Utilities for generating facet results sorted as required
  ScoredDocIdsUtils | Utility methods for Scored Doc IDs.
  TaxonomyMergeUtils | Utility methods for merging index and taxonomy directories.

## Package org.apache.lucene.facet.util Description

# Various utilities for faceted search

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