Apache Lucene™ 9.0.0 Documentation
Lucene is a Java full-text search engine. Lucene is not a complete application, but rather a code library and API that can easily be used to add search capabilities to applications.
This is the official documentation for Apache Lucene 9.0.0. Additional documentation is available in the Wiki.
Getting Started
The following section is intended as a "getting started" guide. It has three audiences: first-time users looking to install Apache Lucene in their application; developers looking to modify or base the applications they develop on Lucene; and developers looking to become involved in and contribute to the development of Lucene. The goal is to help you "get started". It does not go into great depth on some of the conceptual or inner details of Lucene:
Reference Documents
API Javadocs
- core: Lucene core library
- analysis-common: Analyzers for indexing content in different languages and domains
- analysis-icu: Analysis integration with ICU (International Components for Unicode)
- analysis-kuromoji: Japanese Morphological Analyzer
- analysis-morfologik: Analyzer for dictionary stemming, built-in Polish dictionary
- analysis-nori: Korean Morphological Analyzer
- analysis-opennlp: OpenNLP Library Integration
- analysis-phonetic: Analyzer for indexing phonetic signatures (for sounds-alike search)
- analysis-smartcn: Analyzer for indexing Chinese
- analysis-stempel: Analyzer for indexing Polish
- backward-codecs: Codecs for older versions of Lucene
- benchmark: Lucene benchmarking module
- classification: Classification module for Lucene
- codecs: Lucene codecs and postings formats
- demo: Simple example code for Apache Lucene
- expressions: Dynamically computed values to sort/facet/search on based on a pluggable grammar
- facet: Faceted indexing and search capabilities
- grouping: Collectors for grouping search results
- highlighter: Highlights search keywords in results
- join: Index-time and Query-time joins for normalized content
- memory: Single-document in-memory index implementation
- misc: Index tools and other miscellaneous code
- monitor: Reverse-search implementation for monitoring and classification
- queries: Filters and Queries that add to core Lucene
- queryparser: Query parsers and parsing framework
- replicator: Lucene index files replication utility
- sandbox: Various third party contributions and new ideas
- spatial-extras: Geospatial search
- spatial3d: 3D spatial planar geometry APIs
- suggest: Auto-suggest and Spellchecking support
- test-framework: Framework for testing Lucene-based applications
- Luke - Lucene Toolbox GUI tool: A Swing app for browsing documents, indexed terms and posting lists, searching an index, and so on. Type "/path/to/lucene-9.0.0/luke/luke.{sh|bat}" to launch Luke.