# Lucene 8.11.4 facet API

Provides faceted indexing and search capabilities.

See: Description

Packages
Package | Description
--- | ---
org.apache.lucene.facet | Faceted search.
org.apache.lucene.facet.range | Provides range faceting capabilities.
org.apache.lucene.facet.sortedset | Provides faceting capabilities over facets that were indexed with `SortedSetDocValuesFacetField`.
org.apache.lucene.facet.taxonomy | Taxonomy of Categories.
org.apache.lucene.facet.taxonomy.directory | Taxonomy index implementation using on top of a Directory.
org.apache.lucene.facet.taxonomy.writercache | Improves indexing time by caching a map of CategoryPath to their Ordinal.

Provides faceted indexing and search capabilities. Checkout this and this blog posts for some overview on the facets module as well as source code examples here.

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