# Uses of Package
org.apache.lucene.facet.collections

- Packages that use org.apache.lucene.facet.collections
  Package | Description
  --- | ---
  org.apache.lucene.facet.collections | Various optimized Collections implementations.
  org.apache.lucene.facet.search | Facets search code.

- Classes in org.apache.lucene.facet.collections used by org.apache.lucene.facet.collections
  Class and Description
  DoubleIterator Iterator interface for primitive double iteration.
  FloatIterator Iterator interface for primitive int iteration.
  IntArray A Class wrapper for a grow-able int[] which can be sorted and intersect with other IntArrays.
  IntHashSet A Set or primitive int.
  IntIterator Iterator interface for primitive int iteration.
  LRUHashMap LRUHashMap is an extension of Java's HashMap, which has a bounded size(); When it reaches that size, each time a new element is added, the least recently used (LRU) entry is removed.

- Classes in org.apache.lucene.facet.collections used by org.apache.lucene.facet.search
  Class and Description
  IntToObjectMap An Array-based hashtable which maps primitive int to Objects of generic type T. The hashtable is constracted with a given capacity, or 16 as a default.

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