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

- Packages that use LRUHashMap
  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.

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

    Methods in org.apache.lucene.facet.taxonomy that return LRUHashMap
    Modifier and Type | Method | Description
    --- | --- | ---
    `LRUHashMap<K,​V>` | LRUHashMap.`clone()` |

  - ### Uses of LRUHashMap in org.apache.lucene.facet.taxonomy.directory

    Constructors in org.apache.lucene.facet.taxonomy.directory with parameters of type LRUHashMap
    Constructor | Description
    --- | ---
    `DirectoryTaxonomyReader​(DirectoryReader indexReader, DirectoryTaxonomyWriter taxoWriter, LRUHashMap<FacetLabel,​Integer> ordinalCache, LRUHashMap<Integer,​FacetLabel> categoryCache, org.apache.lucene.facet.taxonomy.directory.TaxonomyIndexArrays taxoArrays)` | Expert: Use this method to explicitly force the `DirectoryTaxonomyReader` to use specific parent/children arrays and caches.