# Uses of Package
org.apache.lucene.facet.taxonomy.directory

Packages that use org.apache.lucene.facet.taxonomy.directory
Package
Description
org.apache.lucene.facet.taxonomy
Taxonomy of Categories.
org.apache.lucene.facet.taxonomy.directory
Taxonomy index implementation using on top of a Directory.

- Classes in org.apache.lucene.facet.taxonomy.directory used by org.apache.lucene.facet.taxonomy
  Class
  Description
  DirectoryTaxonomyReader
  A `TaxonomyReader` which retrieves stored taxonomy information from a `Directory`.
  DirectoryTaxonomyWriter
  `TaxonomyWriter` which uses a `Directory` to store the taxonomy information on disk, and keeps an additional in-memory cache of some or all categories.
  DirectoryTaxonomyWriter.OrdinalMap
  Mapping from old ordinal to new ordinals, used when merging indexes with separate taxonomies.
- Classes in org.apache.lucene.facet.taxonomy.directory used by org.apache.lucene.facet.taxonomy.directory
  Class
  Description
  DirectoryTaxonomyReader
  A `TaxonomyReader` which retrieves stored taxonomy information from a `Directory`.
  DirectoryTaxonomyWriter
  `TaxonomyWriter` which uses a `Directory` to store the taxonomy information on disk, and keeps an additional in-memory cache of some or all categories.
  DirectoryTaxonomyWriter.OrdinalMap
  Mapping from old ordinal to new ordinals, used when merging indexes with separate taxonomies.