Lucene
From Wikipedia, the free encyclopedia
| Lucene | |
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| Developer: | Apache Software Foundation |
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| Latest release: | 2.1.0 / 17 Feb 2007 |
| OS: | Cross-platform |
| Use: | Search and index API. |
| License: | Apache Software License |
| Website: | lucene.apache.org |
Lucene is a free/open source information retrieval library, originally implemented in Java by Doug Cutting. It is supported by the Apache Software Foundation and is released under the Apache Software License. Lucene has been ported to programming languages including Perl, C#, C++, Python, Ruby and PHP.
While suitable for any application which requires full text indexing and searching capability, Lucene has been widely recognized for its utility in the implementation of internet search engines and local, single-site searching. This has occasionally led to the misperception that Lucene is itself a search engine with built-in crawling and HTML parsing functionality. Instead, any such application utilizing Lucene would have to provide this functionality independently.
At the core of Lucene's logical architecture is a notion of a document containing fields of text. This flexibility allows Lucene's API to be agnostic of file format. Text from PDFs, HTML, Microsoft Word documents, as well as many others can all be indexed so long as their textual information can be extracted.
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[edit] Software using Lucene
- MediaWiki uses Lucene for full-text search.
- Beagle uses a port of Lucene to C# called Lucene.Net as its indexer.
- Docco (homepage) uses Lucene for desktop search.
- DSpace (homepage) uses Lucene.
- CNET uses Lucene to search their product category listings.
- LjFind uses Lucene to search over 110,000,000 LiveJournal posts.
- Nutch is a complete search engine implementation that utilises Lucene.
- Red-Piranha is another Lucene based search engine. It is ready to use, deployable as a GUI, command line or Tomcat web application, and has the ability to "learn" what the user wants.
- The Flock web browser uses Clucene, a C++ version, to do a full text search of browser history.
- KnowledgeBase - A service focused CRM platform which uses the Lucene search engine
- Zimbra groupware incorporates Lucene.
- Ants P2P is using Lucene for the search option, within this anonymous file sharing program.
- Solr is a Lucene based free/open-source search server with XML/HTTP and JSON APIs, caching, replication, faceted search, highlighting, and a web admin interface.
- LIRE - Lucene Image Retrieval CBIR library, which uses the Lucene search engine
- MMBase has an expansion that uses Lucene for indexing its data.
- Alfresco[1], a free/open source Entrerprise Content Management system
- Strigi[2] uses CLucene, a C++ version, to index and search the desktop.
- Midgard uses Lucene for its indexing and full-text search
- Nuxeo EP, a free/open source Enterprise Content Management (ECM) platform
A more extensive list of software that uses Lucene is in the PoweredBy page of Lucene's wiki.
[edit] Ports
Lucene has been ported or is in the process of being ported to various programming languages other than Java:
- Lucene4c - C
- CLucene - C++
- MUTIS - Delphi
- Lucene.Net - a straight C#/.NET port of Lucene by the Apache Software Foundation, fully compatible with it.
- Plucene - Perl
- Kinosearch - Perl
- Pylucene - Lucene interfaced with a Python front-end
- Ferret and RubyLucene - Ruby
- Zend Framework (Search) - PHP
- Montezuma - Common Lisp
[edit] References
- Erik Hatcher and Otis Gospodnetic, "Lucene in Action", Manning, ISBN 1932394281
[edit] See also
[edit] External links
- Lucene homepage
- Lucene in Action
- Article "Behind the Scenes of the SourceForge.net Search System" by Chris Conrad
- Lucene Wikipedia indexer — introductory article with Java code for search on Wikipedia data
- Simple Lucene Examples
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| License: Apache License • Website: apache.org | |
