Apache Lucene - Lucene Contrib
The Lucene Java project also contains a workspace, Lucene Contrib (formerly known as the Lucene Sandbox), that is open both to all Lucene Java core committers and to developers whose commit rights are restricted to the Contrib workspace; these developers are referred to as "Contrib committers". The Lucene Contrib workspace hosts the following types of packages:
- Various third party contributions.
- Contributions with third party dependencies - the Lucene Java core distribution has no external runtime dependencies.
- New ideas that are intended for eventual inclusion into the Lucene Java core.
Users are free to experiment with the components developed in the Contrib workspace, but Contrib packages will not necessarily be maintained, particularly in their current state. The Lucene Java core backwards compatibility commitments (see http://wiki.apache.org/lucene-java/BackwardsCompatibility) do not necessarily extend to the packages in the Contrib workspace. See the README.txt file for each Contrib package for details. If the README.txt file does not address its backwards compatibility commitments, users should assume it does not make any compatibility commitments.
See Contrib CHANGES for changes included in the current release.
You can access the current trunk Contrib repository at http://svn.apache.org/repos/asf/lucene/dev/trunk/lucene/contrib/.
Contributed Analyzers, Tokenizers, and Filters for various uses and languages.
The benchmark contribution contains tools for benchmarking Lucene using standard, freely available corpora.
The demo contrib contains the Lucene demo: IndexFiles and SearchFiles, described under Getting Started.
See demo javadoc
Provides faceted indexing and search capabilities
See facet javadoc
Groups search results according to a specified field
See grouping javadoc
A set of classes for highlighting matching terms in search results.
Provides integration with ICU (International Components for Unicode) for stronger Unicode and internationalization support.
See icu javadoc
RAM-based index that enables much faster searching than RAMDirectory in certain situations.
Enables joining of parent and child documents when indexed as a doc block
See join javadoc
High-performance single-document main memory index.
See memory javadoc
A variety of miscellaneous files, including QueryParsers, and other alternate Lucene class implementations and tools.
See misc javadoc
A new Lucene query parser implementation, which matches the syntax of the core QueryParser but offers a more modular architecture to enable customization.
Additional queries for Lucene.
See queries javadoc
Classes to help use Lucene with RMI.
See remote javadoc
Classes to help with efficient distance based sorting.
See spatial javadoc
Provides tools for spellchecking and suggestions with Lucene.
A QueryParser that can read queries written in an XML format.