Lucene 4.8.0 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.

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