# Package org.apache.lucene.facet.index

Facets indexing code.

See: Description

Interface Summary
Interface | Description
--- | ---
CategoryListBuilder | Builds a category list data by encoding the appropriate information for every category and ordinal given to `CategoryListBuilder.build(IntsRef, Iterable)`.

Class Summary
Class | Description
--- | ---
CountingListBuilder | A `CategoryListBuilder` which builds a counting list data by encoding the category ordinals into one or more `BytesRef`.
DrillDownStream | A `TokenStream` which creates category drill-down terms.
FacetFields | A utility class for adding facet fields to a document.

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

Facets indexing code.