| <!DOCTYPE html> |
| <!--[if IE]><![endif]--> |
| <html lang="en"> |
| |
| <head> |
| <meta charset="utf-8"> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> |
| <title>Apache Lucene.NET is a powerful open source .NET search library. | Apache Lucene.NET 4.8.0 </title> |
| <meta name="viewport" content="width=device-width"> |
| <meta name="title" content="Apache Lucene.NET is a powerful open source .NET search library. | Apache Lucene.NET 4.8.0 "> |
| <meta name="generator" content="docfx 2.58.0.0"> |
| |
| <link rel="shortcut icon" href="logo/favicon.ico"> |
| <link rel="stylesheet" href="styles/docfx.vendor.css"> |
| <link rel="stylesheet" href="styles/docfx.css"> |
| <link rel="stylesheet" href="styles/main.css"> |
| <meta property="docfx:navrel" content="toc.html"> |
| <meta property="docfx:tocrel" content="toc.html"> |
| |
| |
| |
| |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/academicons/1.8.0/css/academicons.min.css" integrity="sha512-GGGNUPDhnG8LEAEDsjqYIQns+Gu8RBs4j5XGlxl7UfRaZBhCCm5jenJkeJL8uPuOXGqgl8/H1gjlWQDRjd3cUQ==" crossorigin="anonymous"> |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha512-SfTiTlX6kk+qitfevl/7LibUOeJWlt9rbyDn92a1DqWOw9vWG2MFoays0sgObmWazO5BQPiFucnnEAjpAB+/Sw==" crossorigin="anonymous"> |
| |
| <link rel="stylesheet" href="//fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather%7CRoboto+Mono"> |
| <link rel="stylesheet" href="/styles/site.css"> |
| |
| </head> <body id="homepage" data-spy="scroll" data-target="#affix"> |
| <span id="forkongithub"><a href="https://github.com/apache/lucenenet" target="_blank">Fork me on GitHub</a></span> |
| <div id="wrapper"> |
| <header> |
| |
| <nav id="autocollapse" class="navbar ng-scope" role="navigation"> |
| <div class="container"> |
| <div class="navbar-header"> |
| <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar"> |
| <span class="sr-only">Toggle navigation</span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| </button> |
| |
| <a class="navbar-brand" href="index.html"> |
| <img id="logo" class="svg" src="logo/lucene-net-color.png" alt=""> |
| </a> |
| </div> |
| <div class="collapse navbar-collapse" id="navbar"> |
| <form class="navbar-form navbar-right" role="search" id="search"> |
| <div class="form-group"> |
| <input type="text" class="form-control" id="search-query" placeholder="Search" autocomplete="off"> |
| </div> |
| </form> |
| </div> |
| </div> |
| </nav> |
| </header> |
| <section id="intro" class="home-section"> |
| <div class="container"> |
| <h1 class="text-center">Lucene.NET is a high performance search library for .NET</h1> |
| <div class="row"> |
| <div class="nuget-well col-xs-8 col-xs-offset-2 col-lg-6 col-lg-offset-3"> |
| dotnet add package Lucene.Net --prerelease |
| </div> |
| </div> |
| <div class="row"> |
| <div class="text-center project-links"> |
| <a href="https://github.com/apache/lucenenet" target="_blank"> |
| <i class="fa fa-github"></i> |
| </a> |
| <a href="http://mail-archives.apache.org/mod_mbox/lucenenet-dev/" target="_blank"> |
| <i class="fa fa-envelope-o"></i> |
| </a> |
| <a href="https://stackoverflow.com/questions/tagged/lucene.net" target="_blank"> |
| <i class="fa fa-stack-overflow"></i> |
| </a> |
| <a href="download/download.html"> |
| <i class="fa fa-download" target="_blank"></i> |
| </a> |
| </div> |
| </div> |
| </div> |
| </section> |
| <section id="quick-start" class="home-section"> |
| <div class="container"> |
| <div class="row"> |
| <div class="col-xs-12 col-lg-6"> |
| <p class="text-center">Create an index and define a text analyzer</p> |
| <pre class="clean"> |
| <code class="csharp"> |
| // Ensures index backward compatibility |
| const LuceneVersion AppLuceneVersion = LuceneVersion.LUCENE_48; |
| |
| // Construct a machine-independent path for the index |
| var basePath = Environment.GetFolderPath( |
| Environment.SpecialFolder.CommonApplicationData); |
| var indexPath = Path.Combine(basePath, "index"); |
| |
| using var dir = FSDirectory.Open(indexPath); |
| |
| // Create an analyzer to process the text |
| var analyzer = new StandardAnalyzer(AppLuceneVersion); |
| |
| // Create an index writer |
| var indexConfig = new IndexWriterConfig(AppLuceneVersion, analyzer); |
| using var writer = new IndexWriter(dir, indexConfig); |
| </code> |
| </pre> |
| </div> |
| <div class="col-xs-12 col-lg-6"> |
| <p class="text-center">Add to the index</p> |
| <pre class="clean"> |
| <code class="csharp">var source = new |
| { |
| Name = "Kermit the Frog", |
| FavoritePhrase = "The quick brown fox jumps over the lazy dog" |
| }; |
| var doc = new Document |
| { |
| // StringField indexes but doesn't tokenize |
| new StringField("name", |
| source.Name, |
| Field.Store.YES), |
| new TextField("favoritePhrase", |
| source.FavoritePhrase, |
| Field.Store.YES) |
| }; |
| |
| writer.AddDocument(doc); |
| writer.Flush(triggerMerge: false, applyAllDeletes: false); |
| </code> |
| </pre> |
| </div> |
| </div> |
| <div class="row"> |
| <div class="col-xs-12 col-lg-6"> |
| <p class="text-center">Construct a query</p> |
| <pre class="clean"> |
| <code class="csharp">// Search with a phrase |
| var phrase = new MultiPhraseQuery |
| { |
| new Term("favoritePhrase", "brown"), |
| new Term("favoritePhrase", "fox") |
| }; |
| </code> |
| </pre> |
| </div> |
| <div class="col-xs-12 col-lg-6"> |
| <p class="text-center">Fetch the results</p> |
| <pre class="clean"> |
| <code class="csharp">// Re-use the writer to get real-time updates |
| using var reader = writer.GetReader(applyAllDeletes: true); |
| var searcher = new IndexSearcher(reader); |
| var hits = searcher.Search(phrase, 20 /* top 20 */).ScoreDocs; |
| |
| // Display the output in a table |
| Console.WriteLine($"{"Score",10}" + |
| $" {"Name",-15}" + |
| $" {"Favorite Phrase",-40}"); |
| foreach (var hit in hits) |
| { |
| var foundDoc = searcher.Doc(hit.Doc); |
| Console.WriteLine($"{hit.Score:f8}" + |
| $" {foundDoc.Get("name"),-15}" + |
| $" {foundDoc.Get("favoritePhrase"),-40}"); |
| } |
| </code> |
| </pre> |
| </div> |
| </div> |
| </div> |
| </section> |
| <section class="home-section"> |
| <div class="container"> |
| <div class="row"> |
| <div class="col-md-12"> |
| |
| <h2 id="about" class="text-center">About the project</h2> |
| <p>Lucene.Net is a port of the Lucene search library, written in C# and targeted at .NET runtime users.</p> |
| <h3 id="latest-version---lucenenet-480-beta">Latest Version - Lucene.NET 4.8.0 Beta</h3> |
| <ul> |
| <li>The beta version is extremely stable</li> |
| <li>Has more than 7800+ passing unit tests</li> |
| <li>Integrates well with .NET 6.0, .NET 5.0 and .NET Core 2+</li> |
| <li>Supports .NET Standard 2.1 and .NET Standard 2.0</li> |
| <li>Supports .NET Framework 4.5+</li> |
| <li>Some developers already use it in production environments</li> |
| </ul> |
| <h3 id="our-goals">Our Goals</h3> |
| <ul> |
| <li>Maintain the existing line-by-line port from Java to C#, fully automating and commoditizing the process such that the project can easily synchronize with the Java Lucene release schedule</li> |
| <li>Maintaining the high-performance requirements expected of a first class C# search engine library</li> |
| <li>Maximize usability and power when used within the .NET runtime. To that end, it will present a highly idiomatic, carefully tailored API that takes advantage of many of the special features of the .NET runtime</li> |
| </ul> |
| |
| </div> |
| </div> |
| </div> |
| </section> |
| <section class="home-section books"> |
| <div class="container"> |
| <div class="row"> |
| <h2 id="books" class="text-center">Popular Books</h2> |
| |
| <div class="row"> |
| <div class="col-xs-12 col-md-6"> |
| <a href="https://www.amazon.com/Instant-Lucene-NET-Michael-Heydt/dp/1782165940" target="_blank"><img src="https://images-na.ssl-images-amazon.com/images/I/51ovFeqMwBL.jpg"></a> |
| </div> |
| <div class="col-xs-12 col-md-6"> |
| <a href="https://www.amazon.com/Lucene-4-Cookbook-Edwood-Ng/dp/1782162283/" target="_blank"><img src="https://images-na.ssl-images-amazon.com/images/I/51uIsUPhaeL.jpg"></a> |
| </div> |
| </div> |
| |
| |
| |
| </div> |
| </div> |
| </section> |
| <section class="home-section"> |
| <div class="container"> |
| <div class="row"></div> |
| </div> |
| </section> |
| |
| <footer> |
| <div class="grad-bottom"></div> |
| <div class="footer"> |
| <div class="container"> |
| <span class="pull-right"> |
| <a href="#top">Back to top</a> |
| </span> |
| Copyright © 2022 The Apache Software Foundation, Licensed under the <a href='http://www.apache.org/licenses/LICENSE-2.0' target='_blank'>Apache License, Version 2.0</a><br> <small>Apache Lucene.Net, Lucene.Net, Apache, the Apache feather logo, and the Apache Lucene.Net project logo are trademarks of The Apache Software Foundation. <br>All other marks mentioned may be trademarks or registered trademarks of their respective owners.</small> |
| |
| </div> |
| </div> |
| </footer> |
| </div> |
| |
| <script type="text/javascript" src="styles/docfx.vendor.js"></script> |
| <script type="text/javascript" src="styles/docfx.js"></script> |
| <script type="text/javascript" src="styles/main.js"></script> |
| </body> |
| </html> |