Lucene.Net is a source code, class-per-class, API-per-API and algorithmatic port of the Java Lucene search engine to the C# and .NET platform utilizing Microsoft .NET Framework.

Lucene.Net sticks to the APIs and classes used in the original Java implementation of Lucene. The API names as well as class names are preserved with the intention of giving Lucene.Net the look and feel of the C# language and the .NET Framework. For example, the method Hits.length() in the Java implementation now reads Hits.Length() in the C# port.

In addition to the APIs and classes port to C#, the algorithm of Java Lucene is ported to C# Lucene. This means an index created with Java Lucene is back-and-forth compatible with the C# Lucene; both at reading, writing and updating. In fact a Lucene index can be concurrently searched and updated using Java Lucene and C# Lucene processes.

News

• 10 May 2010 - "Tag" Released Lucene.Net 2.9.2 "final" build 001 on SVN.
• 8 March 2010 - Released Contrib.Net 2.9.2 on SVN
• 5 March 2010 - Released Queries.Net 2.9.2 on SVN
• 25 Feburary 2010 - Released FastVectorHighlighter.Net 2.9.2 on SVN
• 17 Feburary 2010 - "Tag" Released Lucene.Net 2.9.1 "final" build 002 on SVN.
• 20 October 2009 - Apache Lucene.Net passed graduation vote as a subproject under Apache Lucene.
• 19 August 2009 - "Tag" Released Lucene.Net 2.4.0 "final" build 002 on SVN.
• 24 July 2009 - "Tag" Released Lucene.Net 2.3.2 "final" build 001 on SVN.
• 20 March 2009 - "Tag" Released Lucene.Net 2.3.1 "final" build 003 on SVN.
• 13 November 2008 - Accepted, Isik Yigit (aka: "DIGY") and Doug Sale as new committers.
• 10 December 2007 - "Tag" Released Lucene.Net 2.1 "final" build 003 on SVN.
• 23 April 2007 - Released Lucene.Net 2.0 "final" build 004 on SVN and as ZIP.
• 01 Feburary 2007 - Released WordNet.Net 2.0.0 build 001 on SVN and as ZIP.
• 29 January 2007 - Released SpellChecker.Net 2.0.0 build 001 on SVN and as ZIP.
• 08 January 2007 - Released Snowball.Net 2.0.0 "final" build 001 on SVN and as ZIP.
• 07 January 2007 - Released MSDN style Highlighter.Net 2.0 API documentation.
• 07 January 2007 - Released Highlighter.Net 2.0 "final" build 001 on SVN and as ZIP.
• 27 December 2006 - Released Lucene.Net 2.0 "final" build 003 on SVN and as ZIP.
• 27 December 2006 - Released MSDN style Lucene.Net 2.0 API documentation.
• 27 December 2006 - Released Highlighter.Net 2.0 "alpha" build 000 on SVN.
• 27 November 2006 - Released Lucene.Net 2.0 "beta" build 002 on SVN and as ZIP.
• 27 November 2006 - Re-released Lucene.Net 1.9.1 "final" build 004 on SVN and as ZIP.
• 11 October 2006 - Re-released Lucene.Net 1.9.1 "final" build 003 on SVN and as ZIP.
• 11 October 2006 - Re-released Lucene.Net 1.9.0 "final" build 007 on SVN and as ZIP.
• 29 September 2006 - Released Lucene.Net 1.9.1 "final" build 002 on SVN and ZIP.
• 29 September 2006 - Re-released Lucene.Net 1.9.0 "final" build 006 on SVN and as ZIP.
• 17 August 2006 - Released Lucene.Net 2.0 "alpha" build 001 on SVN.
• 13 July 2006 - Released Lucene.Net 1.9.1 "beta" build 001 on SVN and as ZIP.
• 09 July 2006 - Released Lucene.Net 1.9 "final" build 005 on SVN and as ZIP.
• 13 June 2006 - Released Lucene.Net 1.9 RC1 build 004 on SVN and as ZIP.
• 03 June 2006 - Released Lucene.Net 1.9 RC1 build 003 on SVN and as ZIP.
• 20 April 2006 - Added MSDN style Lucene.Net API 1.9 API documentation.
• 13 April 2006 - The project has moved into the Apache incubator and is now open for the public, a necessary step towards becoming part of the Lucene Project.
• 13 April 2006 - Lucene.Net is also referred to as DotLucene, dotLucene, and Lucene.NET. The project's official name is Lucene.Net.
• 13 April 2006 - Lucene.Net is still available at its old home on SourceForge.Net but will no longer be maintained at SourceForge.Net.

Downloads

Official binary releases can be found here.

Source code releases of the project are under SVN and can be accessed here:

Current development version of Lucene.Net is in trunk.

Documentation

There is an MSDN style API documentation generated via NDoc tool.

Development

The Lucene.Net project always welcomes new contributors. The project operates via its version control system, mailing lists, and issue tracker.

Active Committers

George Aroush george @ aroush.net
Işık YİĞİT (DIGY) digydigy @ gmail.com
Doug Sale dsale @ myspace-inc.com
Michael Garski mgarski @ myspace-inc.com

Version Control

Grab the current development version of Lucene.Net from its Subversion repository at trunk.

Mailing Lists

For development, discussion about the project occurs on its mailing list, lucene-net-dev @ lucene.apache.org, to subscribe, send a message to lucene-net-dev-subscribe @ lucene.apache.org.

For general usage, discussion about the project occurs on its mailing list, lucene-net-user @ lucene.apache.org, to subscribe, send a message to lucene-net-user-subscribe @ lucene.apache.org.

Commit notifications are sent to lucene-net-commits @ lucene.apache.org, to subscribe send a message to lucene-net-commits-subscribe @ lucene.apache.org.

Archives of the lists are available at:

• http://mail-archives.apache.org/mod_mbox/incubator-lucene-net-dev/
• http://mail-archives.apache.org/mod_mbox/incubator-lucene-net-user/
• http://mail-archives.apache.org/mod_mbox/incubator-lucene-net-commits/

• http://mail-archives.apache.org/mod_mbox/lucene-lucene-net-dev/
• http://mail-archives.apache.org/mod_mbox/lucene-lucene-net-user/
• http://mail-archives.apache.org/mod_mbox/lucene-lucene-net-commits/

Issue Tracking

Lucene.Net uses the ASF Jira installation for issue tracking. You can view open issues, create new ones, and see what issues we've fixed via the web interface at http://issues.apache.org/jira/browse/LUCENENET.

Note that to create a new issue or comment on an existing one you'll have to sign up for an account.