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 <h1>
 	        Apache Lucene - Lucene Contrib
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 <a name="N1000C"></a><a name="Contrib"></a>
 <h2 class="boxed">Lucene Contrib</h2>
 <div class="section">
 <p>
 	          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:
 	        </p>
 <ul>

 <li>Various third party contributions.</li>

 <li>
 	            Contributions with third party dependencies - the Lucene Java core
 	            distribution has no external runtime dependencies.
 	          </li>

 <li>
 	            New ideas that are intended for eventual inclusion into the Lucene
 	            Java core.
 	          </li>

 </ul>
 <p>
 	          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
 	          <a href="http://wiki.apache.org/lucene-java/BackwardsCompatibility">http://wiki.apache.org/lucene-java/BackwardsCompatibility</a>)
 	          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.
 	        </p>
 <p>
   			  See <a href="../changes/Contrib-Changes.html">Contrib CHANGES</a> for changes included in the current release.
 			</p>
 <p>
                 You can access the current trunk Contrib repository at
                 <a href="http://svn.apache.org/repos/asf/lucene/java/trunk/contrib/">http://svn.apache.org/repos/asf/lucene/java/trunk/contrib/</a>.
             </p>
 <a name="N10035"></a><a name="analyzers"></a>
 <h3 class="boxed">analyzers</h3>
 <p>Contributed Analyzers, Tokenizers, and Filters for various uses and languages.</p>
 <p>See <a href="../api/contrib-analyzers/index.html">analyzers javadoc</a>
 </p>
 <a name="N10044"></a><a name="ant"></a>
 <h3 class="boxed">ant</h3>
 <p>Ant task to create Lucene indexes.</p>
 <p>See <a href="../api/contrib-ant/index.html">ant javadoc</a>
 </p>
 <a name="N10053"></a><a name="benchmark"></a>
 <h3 class="boxed">benchmark</h3>
 <p>The benchmark contribution contains tools for benchmarking Lucene using standard, freely available corpora.</p>
 <p>See <a href="../api/contrib-benchmark/index.html">benchmark javadoc</a>
 </p>
 <a name="N10062"></a><a name="collation"></a>
 <h3 class="boxed">collation</h3>
 <p>CollationKeyFilter/Analyzer and ICUCollationKeyFilter/Analyzer - can be used as an efficient replacement for Locale
                 sorting and Locale range queries as well as Locale-specific normalization </p>
 <p>See <a href="../api/contrib-collation/index.html">collation javadoc</a>
 </p>
 <a name="N10071"></a><a name="db"></a>
 <h3 class="boxed">db</h3>
 <p>Provides integration with Berkley DB.</p>
 <p>See <a href="../api/contrib-db/index.html">db javadoc</a>
 </p>
 <a name="N10080"></a><a name="highlighter"></a>
 <h3 class="boxed">highlighter</h3>
 <p>A set of classes for highlighting matching terms in search results.</p>
 <p>See <a href="../api/contrib-highlighter/index.html">highlighter javadoc</a>
 </p>
 <a name="N1008F"></a><a name="fast-vector-highlighter"></a>
 <h3 class="boxed">fast-vector-highlighter</h3>
 <p>An alternative set of classes for highlighting matching terms in search results that relies on stored term vectors.
                 This highlighter can be much faster than the standard highlighter, especially on large fields.</p>
 <p>See <a href="../api/contrib-fast-vector-highlighter/index.html">fast-vector-highlighter javadoc</a>
 </p>
 <a name="N1009E"></a><a name="instantiated"></a>
 <h3 class="boxed">instantiated</h3>
 <p>RAM-based index that enables much faster searching than RAMDirectory in certain situations.</p>
 <p>See <a href="../api/contrib-instantiated/index.html">instantiated javadoc</a>
 </p>
 <a name="N100AD"></a><a name="lucli"></a>
 <h3 class="boxed">lucli</h3>
 <p>An application that allows Lucene index manipulation from the command-line.</p>
 <p>See <a href="../api/contrib-lucli/index.html">lucli javadoc</a>
 </p>
 <a name="N100BC"></a><a name="memory"></a>
 <h3 class="boxed">memory</h3>
 <p>High-performance single-document main memory index.</p>
 <p>See <a href="../api/contrib-memory/index.html">memory javadoc</a>
 </p>
 <a name="N100CB"></a><a name="misc"></a>
 <h3 class="boxed">misc</h3>
 <p>A variety of miscellaneous files, including QueryParsers, and other alternate Lucene class implementations and tools.</p>
 <p>See <a href="../api/contrib-misc/index.html">misc javadoc</a>
 </p>
 <a name="N100DA"></a><a name="queryparser"></a>
 <h3 class="boxed">queryparser</h3>
 <p>A new Lucene query parser implementation, which matches the syntax of the core QueryParser but offers a more modular architecture to enable customization.</p>
 <p>See <a href="../api/contrib-queryparser/index.html">queryparser javadoc</a>
 </p>
 <a name="N100E9"></a><a name="regex"></a>
 <h3 class="boxed">regex</h3>
 <p>Queries with additional regex matching capabilities.</p>
 <p>See <a href="../api/contrib-regex/index.html">regex javadoc</a>
 </p>
 <a name="N100F8"></a><a name="remote"></a>
 <h3 class="boxed">remote</h3>
 <p>Classes to help use Lucene with RMI.</p>
 <p>See <a href="../api/contrib-remote/index.html">remote javadoc</a>
 </p>
 <a name="N10107"></a><a name="snowball"></a>
 <h3 class="boxed">snowball</h3>
 <p>Pre-compiled versions of the Snowball stemmers for Lucene.</p>
 <p>See <a href="../api/contrib-snowball/index.html">snowball javadoc</a>
 </p>
 <a name="N10116"></a><a name="spatial"></a>
 <h3 class="boxed">spatial</h3>
 <p>Classes to help with efficient distance based sorting.</p>
 <p>See <a href="../api/contrib-spatial/index.html">spatial javadoc</a>
 </p>
 <a name="N10125"></a><a name="spellchecker"></a>
 <h3 class="boxed">spellchecker</h3>
 <p>Provides tools for spellchecking and suggestions with Lucene.</p>
 <p>See <a href="../api/contrib-spellchecker/index.html">spellchecker javadoc</a>
 </p>
 <a name="N10134"></a><a name="surround"></a>
 <h3 class="boxed">surround</h3>
 <p>A QueryParser that supports the Span family of queries as well as pre and infix notation.</p>
 <p>See <a href="../api/contrib-surround/index.html">surround javadoc</a>
 </p>
 <a name="N10143"></a><a name="swing"></a>
 <h3 class="boxed">swing</h3>
 <p>Swing components designed to integrate with Lucene.</p>
 <p>See <a href="../api/contrib-swing/index.html">swing javadoc</a>
 </p>
 <a name="N10152"></a><a name="wikipedia"></a>
 <h3 class="boxed">wikipedia</h3>
 <p>Tools for working with wikipedia content.</p>
 <p>See <a href="../api/contrib-wikipedia/index.html">wikipedia javadoc</a>
 </p>
 <a name="N10161"></a><a name="wordnet"></a>
 <h3 class="boxed">wordnet</h3>
 <p>Tools to help utilize wordnet synonyms with Lucene</p>
 <p>See <a href="../api/contrib-wordnet/index.html">wordnet javadoc</a>
 </p>
 <a name="N10170"></a><a name="xml-query-parser"></a>
 <h3 class="boxed">xml-query-parser</h3>
 <p>A QueryParser that can read queries written in an XML format.</p>
 <p>See <a href="../api/contrib-wordnet/index.html">xml-query-parser javadoc</a>
 </p>
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	<h1>
	Apache Lucene - Lucene Contrib
	</h1>
	<div id="minitoc-area">
	<ul class="minitoc">
	<li>
	<a href="#Contrib">Lucene Contrib</a>
	<ul class="minitoc">
	<li>
	<a href="#analyzers">analyzers</a>
	</li>
	<li>
	<a href="#ant">ant</a>
	</li>
	<li>
	<a href="#benchmark">benchmark</a>
	</li>
	<li>
	<a href="#collation">collation</a>
	</li>
	<li>
	<a href="#db">db</a>
	</li>
	<li>
	<a href="#highlighter">highlighter</a>
	</li>
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	<a href="#fast-vector-highlighter">fast-vector-highlighter</a>
	</li>
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	<a href="#instantiated">instantiated</a>
	</li>
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	<a href="#lucli">lucli</a>
	</li>
	<li>
	<a href="#memory">memory</a>
	</li>
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	<a href="#misc">misc</a>
	</li>
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	<a href="#queryparser">queryparser</a>
	</li>
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	<a href="#regex">regex</a>
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	<a href="#remote">remote</a>
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	<a href="#snowball">snowball</a>
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	<a href="#spatial">spatial</a>
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	<a name="N1000C"></a><a name="Contrib"></a>
	<h2 class="boxed">Lucene Contrib</h2>
	<div class="section">
	<p>
	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:
	</p>
	<ul>

	<li>Various third party contributions.</li>

	<li>
	Contributions with third party dependencies - the Lucene Java core
	distribution has no external runtime dependencies.
	</li>

	<li>
	New ideas that are intended for eventual inclusion into the Lucene
	Java core.
	</li>

	</ul>
	<p>
	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
	<a href="http://wiki.apache.org/lucene-java/BackwardsCompatibility">http://wiki.apache.org/lucene-java/BackwardsCompatibility</a>)
	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.
	</p>
	<p>
	See <a href="../changes/Contrib-Changes.html">Contrib CHANGES</a> for changes included in the current release.
	</p>
	<p>
	You can access the current trunk Contrib repository at
	<a href="http://svn.apache.org/repos/asf/lucene/java/trunk/contrib/">http://svn.apache.org/repos/asf/lucene/java/trunk/contrib/</a>.
	</p>
	<a name="N10035"></a><a name="analyzers"></a>
	<h3 class="boxed">analyzers</h3>
	<p>Contributed Analyzers, Tokenizers, and Filters for various uses and languages.</p>
	<p>See <a href="../api/contrib-analyzers/index.html">analyzers javadoc</a>
	</p>
	<a name="N10044"></a><a name="ant"></a>
	<h3 class="boxed">ant</h3>
	<p>Ant task to create Lucene indexes.</p>
	<p>See <a href="../api/contrib-ant/index.html">ant javadoc</a>
	</p>
	<a name="N10053"></a><a name="benchmark"></a>
	<h3 class="boxed">benchmark</h3>
	<p>The benchmark contribution contains tools for benchmarking Lucene using standard, freely available corpora.</p>
	<p>See <a href="../api/contrib-benchmark/index.html">benchmark javadoc</a>
	</p>
	<a name="N10062"></a><a name="collation"></a>
	<h3 class="boxed">collation</h3>
	<p>CollationKeyFilter/Analyzer and ICUCollationKeyFilter/Analyzer - can be used as an efficient replacement for Locale
	sorting and Locale range queries as well as Locale-specific normalization </p>
	<p>See <a href="../api/contrib-collation/index.html">collation javadoc</a>
	</p>
	<a name="N10071"></a><a name="db"></a>
	<h3 class="boxed">db</h3>
	<p>Provides integration with Berkley DB.</p>
	<p>See <a href="../api/contrib-db/index.html">db javadoc</a>
	</p>
	<a name="N10080"></a><a name="highlighter"></a>
	<h3 class="boxed">highlighter</h3>
	<p>A set of classes for highlighting matching terms in search results.</p>
	<p>See <a href="../api/contrib-highlighter/index.html">highlighter javadoc</a>
	</p>
	<a name="N1008F"></a><a name="fast-vector-highlighter"></a>
	<h3 class="boxed">fast-vector-highlighter</h3>
	<p>An alternative set of classes for highlighting matching terms in search results that relies on stored term vectors.
	This highlighter can be much faster than the standard highlighter, especially on large fields.</p>
	<p>See <a href="../api/contrib-fast-vector-highlighter/index.html">fast-vector-highlighter javadoc</a>
	</p>
	<a name="N1009E"></a><a name="instantiated"></a>
	<h3 class="boxed">instantiated</h3>
	<p>RAM-based index that enables much faster searching than RAMDirectory in certain situations.</p>
	<p>See <a href="../api/contrib-instantiated/index.html">instantiated javadoc</a>
	</p>
	<a name="N100AD"></a><a name="lucli"></a>
	<h3 class="boxed">lucli</h3>
	<p>An application that allows Lucene index manipulation from the command-line.</p>
	<p>See <a href="../api/contrib-lucli/index.html">lucli javadoc</a>
	</p>
	<a name="N100BC"></a><a name="memory"></a>
	<h3 class="boxed">memory</h3>
	<p>High-performance single-document main memory index.</p>
	<p>See <a href="../api/contrib-memory/index.html">memory javadoc</a>
	</p>
	<a name="N100CB"></a><a name="misc"></a>
	<h3 class="boxed">misc</h3>
	<p>A variety of miscellaneous files, including QueryParsers, and other alternate Lucene class implementations and tools.</p>
	<p>See <a href="../api/contrib-misc/index.html">misc javadoc</a>
	</p>
	<a name="N100DA"></a><a name="queryparser"></a>
	<h3 class="boxed">queryparser</h3>
	<p>A new Lucene query parser implementation, which matches the syntax of the core QueryParser but offers a more modular architecture to enable customization.</p>
	<p>See <a href="../api/contrib-queryparser/index.html">queryparser javadoc</a>
	</p>
	<a name="N100E9"></a><a name="regex"></a>
	<h3 class="boxed">regex</h3>
	<p>Queries with additional regex matching capabilities.</p>
	<p>See <a href="../api/contrib-regex/index.html">regex javadoc</a>
	</p>
	<a name="N100F8"></a><a name="remote"></a>
	<h3 class="boxed">remote</h3>
	<p>Classes to help use Lucene with RMI.</p>
	<p>See <a href="../api/contrib-remote/index.html">remote javadoc</a>
	</p>
	<a name="N10107"></a><a name="snowball"></a>
	<h3 class="boxed">snowball</h3>
	<p>Pre-compiled versions of the Snowball stemmers for Lucene.</p>
	<p>See <a href="../api/contrib-snowball/index.html">snowball javadoc</a>
	</p>
	<a name="N10116"></a><a name="spatial"></a>
	<h3 class="boxed">spatial</h3>
	<p>Classes to help with efficient distance based sorting.</p>
	<p>See <a href="../api/contrib-spatial/index.html">spatial javadoc</a>
	</p>
	<a name="N10125"></a><a name="spellchecker"></a>
	<h3 class="boxed">spellchecker</h3>
	<p>Provides tools for spellchecking and suggestions with Lucene.</p>
	<p>See <a href="../api/contrib-spellchecker/index.html">spellchecker javadoc</a>
	</p>
	<a name="N10134"></a><a name="surround"></a>
	<h3 class="boxed">surround</h3>
	<p>A QueryParser that supports the Span family of queries as well as pre and infix notation.</p>
	<p>See <a href="../api/contrib-surround/index.html">surround javadoc</a>
	</p>
	<a name="N10143"></a><a name="swing"></a>
	<h3 class="boxed">swing</h3>
	<p>Swing components designed to integrate with Lucene.</p>
	<p>See <a href="../api/contrib-swing/index.html">swing javadoc</a>
	</p>
	<a name="N10152"></a><a name="wikipedia"></a>
	<h3 class="boxed">wikipedia</h3>
	<p>Tools for working with wikipedia content.</p>
	<p>See <a href="../api/contrib-wikipedia/index.html">wikipedia javadoc</a>
	</p>
	<a name="N10161"></a><a name="wordnet"></a>
	<h3 class="boxed">wordnet</h3>
	<p>Tools to help utilize wordnet synonyms with Lucene</p>
	<p>See <a href="../api/contrib-wordnet/index.html">wordnet javadoc</a>
	</p>
	<a name="N10170"></a><a name="xml-query-parser"></a>
	<h3 class="boxed">xml-query-parser</h3>
	<p>A QueryParser that can read queries written in an XML format.</p>
	<p>See <a href="../api/contrib-wordnet/index.html">xml-query-parser javadoc</a>
	</p>
	</div>

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