Lucene 4.0.0 facet API

Provides faceted indexing and search capabilities (checkout the userguide).

See:
Description

Packages

org.apache.lucene.facet	Provides faceted indexing and search capabilities.
org.apache.lucene.facet.enhancements	Enhanced category features
org.apache.lucene.facet.enhancements.association	Association category enhancements
org.apache.lucene.facet.enhancements.params	Enhanced category features
org.apache.lucene.facet.index	Indexing of document categories
org.apache.lucene.facet.index.attributes	Category attributes and their properties for indexing
org.apache.lucene.facet.index.categorypolicy	Policies for indexing categories
org.apache.lucene.facet.index.params	Indexing-time specifications for handling facets
org.apache.lucene.facet.index.streaming	Expert: attributes streaming definition for indexing facets
org.apache.lucene.facet.search	Faceted Search API
org.apache.lucene.facet.search.aggregator	Aggregating Facets during Faceted Search
org.apache.lucene.facet.search.aggregator.association	Association-based aggregators.
org.apache.lucene.facet.search.cache	Caching to speed up facets accumulation.
org.apache.lucene.facet.search.params	Parameters for Faceted Search
org.apache.lucene.facet.search.params.association	Association-based Parameters for Faceted Search.
org.apache.lucene.facet.search.results	Results of Faceted Search
org.apache.lucene.facet.search.sampling	Sampling for facets accumulation
org.apache.lucene.facet.taxonomy	Taxonomy of Categories
org.apache.lucene.facet.taxonomy.directory	Taxonomy implemented using a Lucene-Index
org.apache.lucene.facet.taxonomy.writercache	Improves indexing time by caching a map of CategoryPath to their Ordinal
org.apache.lucene.facet.taxonomy.writercache.cl2o	Category->Ordinal caching implementation using an optimized data-structures
org.apache.lucene.facet.taxonomy.writercache.lru	An LRU cache implementation for the CategoryPath to Ordinal map
org.apache.lucene.facet.util	Various utilities for faceted search
org.apache.lucene.util	Low-level faceting utilities.
org.apache.lucene.util.collections	Various optimized Collections implementations.
org.apache.lucene.util.encoding	Offers various encoders and decoders for integers, as well as the mechanisms to create new ones.

Provides faceted indexing and search capabilities (checkout the userguide).