2005-05-14 19:07:52 -04:00
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<!--
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Copyright 1999-2004 The Apache Software Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<!-- Content Stylesheet for Site -->
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<!-- start the processing -->
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<!-- ====================================================================== -->
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<!-- GENERATED FILE, DO NOT EDIT, EDIT THE XML FILE IN xdocs INSTEAD! -->
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<!-- Main Page Section -->
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<!-- ====================================================================== -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/>
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<title>Apache Lucene - Features</title>
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2006-08-22 09:38:16 -04:00
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<link rel="stylesheet" type="text/css" href="styles/lucene.css">
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2005-05-14 19:07:52 -04:00
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</head>
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<body bgcolor="#ffffff" text="#000000" link="#525D76">
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<table border="0" width="100%" cellspacing="0">
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<!-- TOP IMAGE -->
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<tr>
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<td align="left">
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<a href="http://www.apache.org"><img src="http://lucene.apache.org/java/docs/images/asf-logo.gif" width="387" height="100" border="0"/></a>
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</td>
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<td align="right">
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<a href="http://lucene.apache.org/"><img src="./images/lucene_green_300.gif" alt="Apache Lucene" border="0"/></a>
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</td>
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</tr>
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</table>
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<table border="0" width="100%" cellspacing="4">
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<tr><td colspan="2">
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<hr noshade="" size="1"/>
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</td></tr>
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<tr>
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<!-- LEFT SIDE NAVIGATION -->
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<td width="20%" valign="top" nowrap="true">
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<!-- ============================================================ -->
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<p><strong>About</strong></p>
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<ul>
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<li> <a href="./index.html">Overview</a>
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</li>
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<li> <a href="./features.html">Features</a>
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</li>
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<li> <a href="http://wiki.apache.org/jakarta-lucene/PoweredBy">Powered by Lucene</a>
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</li>
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<li> <a href="./whoweare.html">Who We Are</a>
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</li>
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<li> <a href="./mailinglists.html">Mailing Lists</a>
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</li>
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</ul>
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<p><strong>Resources</strong></p>
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<ul>
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<li> <a href="http://wiki.apache.org/jakarta-lucene">Wiki</a>
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</li>
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<li> <a href="http://wiki.apache.org/jakarta-lucene/LuceneFAQ">FAQ</a>
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</li>
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<li> <a href="./gettingstarted.html">Getting Started</a>
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</li>
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<li> <a href="./queryparsersyntax.html">Query Syntax</a>
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</li>
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<li> <a href="./fileformats.html">File Formats</a>
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</li>
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<li> <a href="./scoring.html">Scoring</a>
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</li>
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<li> <a href="./api/index.html">Javadoc</a>
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</li>
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<li> <a href="./contributions.html">Contributions</a>
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</li>
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<li> <a href="./benchmarks.html">Benchmarks</a>
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</li>
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2005-09-21 06:41:16 -04:00
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<li> <a href="http://issues.apache.org/jira/browse/LUCENE">Issue Tracker</a>
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</li>
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<li> <a href="./lucene-sandbox/">Lucene Sandbox</a>
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</li>
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</ul>
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<p><strong>Download</strong></p>
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<ul>
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2006-02-21 11:31:28 -05:00
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<li> <a href="http://www.apache.org/dyn/closer.cgi/lucene/java/">Releases</a>
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</li>
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2006-02-21 11:31:28 -05:00
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<li> <a href="http://svn.apache.org/viewcvs.cgi/lucene/java/">Source Repository</a>
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</li>
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</ul>
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</td>
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<td width="80%" align="left" valign="top">
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<table border="0" cellspacing="0" cellpadding="2" width="100%">
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<tr><td bgcolor="#525D76">
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<font color="#ffffff" face="arial,helvetica,sanserif">
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<a name="Features"><strong>Features</strong></a>
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</font>
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</td></tr>
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<tr><td>
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<blockquote>
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<p>Lucene offers powerful features through a simple API:</p>
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</blockquote>
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</p>
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</td></tr>
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<tr><td><br/></td></tr>
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</table>
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<table border="0" cellspacing="0" cellpadding="2" width="100%">
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<tr><td bgcolor="#525D76">
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<font color="#ffffff" face="arial,helvetica,sanserif">
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<a name="Scalable, High-Performance Indexing"><strong>Scalable, High-Performance Indexing</strong></a>
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</font>
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</td></tr>
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<tr><td>
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<blockquote>
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<ul>
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<li>over 20MB/minute on Pentium M 1.5GHz<br /></li>
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<li>small RAM requirements -- only 1MB heap</li>
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<li>incremental indexing as fast as batch indexing</li>
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<li>index size roughly 20-30% the size of text indexed</li>
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</ul>
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</blockquote>
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</p>
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</td></tr>
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<tr><td><br/></td></tr>
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</table>
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<table border="0" cellspacing="0" cellpadding="2" width="100%">
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<tr><td bgcolor="#525D76">
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<font color="#ffffff" face="arial,helvetica,sanserif">
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<a name="Powerful, Accurate and Efficient Search Algorithms"><strong>Powerful, Accurate and Efficient Search Algorithms</strong></a>
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</font>
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</td></tr>
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<tr><td>
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<blockquote>
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<ul>
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<li>ranked searching -- best results returned first</li>
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<li>many powerful query types: phrase queries, wildcard queries, proximity
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queries, range queries and more</li>
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<li>fielded searching (e.g., title, author, contents)</li>
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<li>date-range searching</li>
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<li>sorting by any field</li>
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<li>multiple-index searching with merged results</li>
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<li>allows simultaneous update and searching</li>
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</ul>
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</blockquote>
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</p>
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</td></tr>
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<tr><td><br/></td></tr>
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</table>
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<table border="0" cellspacing="0" cellpadding="2" width="100%">
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<tr><td bgcolor="#525D76">
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<font color="#ffffff" face="arial,helvetica,sanserif">
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<a name="Cross-Platform Solution"><strong>Cross-Platform Solution</strong></a>
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</font>
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</td></tr>
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<tr><td>
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<blockquote>
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<ul>
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2005-06-30 15:26:13 -04:00
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<li>Available as Open Source software under the
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<a href="http://www.apache.org/licenses/LICENSE-2.0.html">Apache License</a>
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which lets you use Lucene in both commercial and Open Source programs</li>
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<li>100%-pure Java</li>
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<li>implementations <a href="http://wiki.apache.org/jakarta-lucene/LuceneImplementations">in other
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programming languages available</a> that are index-compatible</li>
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</ul>
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</blockquote>
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</p>
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</td></tr>
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<tr><td><br/></td></tr>
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</table>
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</td>
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</tr>
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<!-- FOOTER -->
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<tr><td colspan="2">
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<hr noshade="" size="1"/>
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</td></tr>
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<tr><td colspan="2">
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<div align="center"><font color="#525D76" size="-1"><em>
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Copyright © 1999-2005, The Apache Software Foundation
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</em></font></div>
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</td></tr>
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</table>
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</body>
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</html>
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<!-- end the processing -->
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