Package org.apache.lucene.facet.taxonomy.writercache

Improves indexing time by caching a map of CategoryPath to their Ordinal.

Interface Summary

Interface	Description
TaxonomyWriterCache	TaxonomyWriterCache is a relatively simple interface for a cache of category->ordinal mappings, used in TaxonomyWriter implementations (such as DirectoryTaxonomyWriter).

Class Summary

Class	Description
Cl2oTaxonomyWriterCache	TaxonomyWriterCache using CompactLabelToOrdinal.
CollisionMap	HashMap to store colliding labels.
CompactLabelToOrdinal	This is a very efficient LabelToOrdinal implementation that uses a CharBlockArray to store all labels and a configurable number of HashArrays to reference the labels.
LabelToOrdinal	Abstract class for storing Label->Ordinal mappings in a taxonomy.
LruTaxonomyWriterCache	LRU TaxonomyWriterCache - good choice for huge taxonomies.
NameHashIntCacheLRU	An an LRU cache of mapping from name to int.

Enum Summary

Enum	Description
LruTaxonomyWriterCache.LRUType	Determines cache type.