got search working with lucene.net

Src/VideoGameQuotes.Api/Search/IQuoteSearcher.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace VideoGameQuotes.Api.Search {
+	/// <summary>
+	/// Exposes an interface to search for quotes
+	/// </summary>
+	public interface IQuoteSearcher {
+		/// <summary>
+		/// Searches for quote based on the given search query
+		/// </summary>
+		IEnumerable<SearchResult> Search(string query);
+
+		/// <summary>
+		/// (Re)builds the search index
+		/// </summary>
+		/// <param name="replaceOldIndex">Set to false to not overwrite the old index with a brand new one.</param>
+		void BuildIndex(bool replaceOldIndex = true);
+	}
+}

Src/VideoGameQuotes.Api/Search/ISearchIndexLocator.cs

@@ -0,0 +1,15 @@
+namespace VideoGameQuotes.Api.Search {
+	public interface ISearchIndexLocator {
+		string IndexDirectory { get; }
+	}
+
+	public class SearchIndexLocator : ISearchIndexLocator {
+		private readonly string indexDirectory;
+
+		public SearchIndexLocator(string indexDirectory) {
+			this.indexDirectory = indexDirectory;
+		}
+
+		public string IndexDirectory { get { return indexDirectory; } }
+	}
+}

Src/VideoGameQuotes.Api/Search/Lucene/LuceneExtensions.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+using Lucene.Net.Search;
+
+namespace VideoGameQuotes.Api.Search.Lucene {
+	public static class LuceneExtensions {
+		public static IEnumerable<Hit> ToEnumerable(this Hits hits) {
+			var iterator = hits.Iterator();
+			while (iterator.MoveNext()) {
+				yield return (Hit)iterator.Current;
+			}
+		}
+	}
+}

Src/VideoGameQuotes.Api/Search/Lucene/LuceneQuoteSearcher.cs

@@ -0,0 +1,58 @@
+using System.Collections.Generic;
+using System.Linq;
+using Lucene.Net.Analysis;
+using Lucene.Net.Analysis.Standard;
+using Lucene.Net.Documents;
+using Lucene.Net.Index;
+using Lucene.Net.QueryParsers;
+using Lucene.Net.Search;
+using Portoa.Persistence;
+
+namespace VideoGameQuotes.Api.Search.Lucene {
+	/// <summary>
+	/// <see cref="IQuoteSearcher"/> implementation based on <c>Lucene.NET</c>
+	/// </summary>
+	public class LuceneQuoteSearcher : IQuoteSearcher {
+		private readonly ISearchIndexLocator indexLocator;
+		private readonly IRepository<Quote> quoteRepository;
+		private readonly Analyzer analyzer = new StandardAnalyzer();
+		private readonly QueryParser queryParser;
+
+		public LuceneQuoteSearcher(ISearchIndexLocator indexLocator, IRepository<Quote> quoteRepository) {
+			this.indexLocator = indexLocator;
+			this.quoteRepository = quoteRepository;
+			queryParser = new QueryParser("text", analyzer);
+		}
+
+		[UnitOfWork]
+		public IEnumerable<SearchResult> Search(string searchString) {
+			var query = queryParser.Parse(QueryParser.Escape(searchString));
+			var searcher = new IndexSearcher(indexLocator.IndexDirectory);
+			return searcher
+				.Search(query)
+				.ToEnumerable()
+				.Select(hit => new SearchResult { 
+					Score = hit.GetScore(), 
+					Quote = quoteRepository.FindById(int.Parse(hit.GetDocument().GetField("id").StringValue())) 
+				});
+		}
+
+		[UnitOfWork]
+		public void BuildIndex(bool replaceOldIndex = true) {
+			var indexWriter = new IndexWriter(indexLocator.IndexDirectory, analyzer, replaceOldIndex);
+			foreach (var quote in quoteRepository.Records) {
+				indexWriter.AddDocument(CreateDocument(quote));
+			}
+
+			indexWriter.Optimize();
+			indexWriter.Close();
+		}
+
+		private static Document CreateDocument(Quote quote) {
+			var document = new Document();
+			document.Add(new Field("id", quote.Id.ToString(), Field.Store.YES, Field.Index.NO));
+			document.Add(new Field("text", quote.Text, Field.Store.YES, Field.Index.TOKENIZED));
+			return document;
+		}
+	}
+}

Src/VideoGameQuotes.Api/Search/SearchResult.cs

@@ -0,0 +1,17 @@
+namespace VideoGameQuotes.Api.Search {
+	/// <summary>
+	/// Represents a search result
+	/// </summary>
+	public class SearchResult {
+		/// <summary>
+		/// A value (between 0 and 1, the higher the better) representing how good
+		/// the match is between the search query and the value
+		/// </summary>
+		public double Score { get; set; }
+
+		/// <summary>
+		/// The matched quote
+		/// </summary>
+		public Quote Quote { get; set; }
+	}
+}

Src/VideoGameQuotes.Api/VideoGameQuotes.Api.csproj

@@ -37,6 +37,9 @@
     <Reference Include="log4net">
       <HintPath>..\..\Lib\log4net.dll</HintPath>
     </Reference>
+    <Reference Include="Lucene.Net">
+      <HintPath>..\..\Lib\Lucene.Net.dll</HintPath>
+    </Reference>
     <Reference Include="MySql.Data">
       <HintPath>..\..\Lib\MySql.Data.dll</HintPath>
     </Reference>
@@ -58,11 +61,7 @@
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Xml.Linq" />
-    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="ApiException.cs" />
@@ -71,6 +70,10 @@
     <Compile Include="CriterionHandler.cs" />
     <Compile Include="Game.cs" />
     <Compile Include="ICurrentUserProvider.cs" />
+    <Compile Include="Search\IQuoteSearcher.cs" />
+    <Compile Include="Search\ISearchIndexLocator.cs" />
+    <Compile Include="Search\Lucene\LuceneQuoteSearcher.cs" />
+    <Compile Include="Search\Lucene\LuceneExtensions.cs" />
     <Compile Include="Persistence\IUserRepository.cs" />
     <Compile Include="Persistence\UserService.cs" />
     <Compile Include="QuoteFlag.cs" />
@@ -80,6 +83,7 @@
     <Compile Include="QuoteFlagType.cs" />
     <Compile Include="Region.cs" />
     <Compile Include="GamingSystem.cs" />
+    <Compile Include="Search\SearchResult.cs" />
     <Compile Include="User.cs" />
     <Compile Include="UserGroup.cs" />
     <Compile Include="Vote.cs" />

Src/VideoGameQuotes.Web/Controllers/QuoteController.cs

@@ -8,6 +8,7 @@ using Portoa.Persistence;
 using Portoa.Web.Controllers;
 using Portoa.Web.Results;
 using VideoGameQuotes.Api;
+using VideoGameQuotes.Api.Search;
 using VideoGameQuotes.Web.Models;
 using VideoGameQuotes.Web.Security;
 using VideoGameQuotes.Web.Services;
@@ -16,10 +17,12 @@ namespace VideoGameQuotes.Web.Controllers {
 	public class QuoteController : Controller {
 		private readonly IQuoteService quoteService;
 		private readonly ICurrentUserProvider currentUserProvider;
+		private readonly IQuoteSearcher quoteSearcher;
 
-		public QuoteController(IQuoteService quoteService, ICurrentUserProvider currentUserProvider) {
+		public QuoteController(IQuoteService quoteService, ICurrentUserProvider currentUserProvider, IQuoteSearcher quoteSearcher) {
 			this.quoteService = quoteService;
 			this.currentUserProvider = currentUserProvider;
+			this.quoteSearcher = quoteSearcher;
 		}
 
 		public ActionResult Browse(BrowseModel model) {
@@ -27,7 +30,10 @@ namespace VideoGameQuotes.Web.Controllers {
 				return View("DefaultBrowse");
 			}
 
-			return View("QualifiedBrowse", new QualifiedBrowseModel(model) { Quotes = quoteService.GetBrowsableQuotes(model) });
+			return View("QualifiedBrowse", new QualifiedBrowseModel(model) { 
+				Quotes = quoteService.GetBrowsableQuotes(model), 
+				User = currentUserProvider.CurrentUser 
+			});
 		}
 
 		[HttpPost, IsValidUser]
@@ -237,5 +243,15 @@ namespace VideoGameQuotes.Web.Controllers {
 				return Json(this.CreateJsonErrorResponse(e));
 			}
 		}
+
+		public ActionResult Search(string searchQuery) {
+			var model = new SearchModel {
+				User = currentUserProvider.CurrentUser,
+				Results = quoteSearcher.Search(searchQuery),
+				SearchQuery = searchQuery
+			};
+
+			return View(model);
+		}
 	}
 }

Src/VideoGameQuotes.Web/Global.asax.cs

@@ -1,12 +1,18 @@
-using System.Web.Mvc;
+using System.Collections.Specialized;
+using System.Configuration;
+using System.Web.Mvc;
 using System.Web.Routing;
 using Microsoft.Practices.Unity;
+using Portoa.Logging;
+using Portoa.Persistence;
 using Portoa.Web;
 using Portoa.Web.Models;
 using Portoa.Web.Unity;
 using UnityGenerics;
 using VideoGameQuotes.Api;
 using VideoGameQuotes.Api.Persistence;
+using VideoGameQuotes.Api.Search;
+using VideoGameQuotes.Api.Search.Lucene;
 using VideoGameQuotes.Web.Controllers;
 using VideoGameQuotes.Web.Models;
 using VideoGameQuotes.Web.Security;
@@ -36,23 +42,33 @@ namespace VideoGameQuotes.Web {
 				.RegisterType<IUserService, UserService>()
 				.RegisterType<IQuoteService, QuoteService>()
 				.RegisterType<IApiService, ApiService>()
-				.RegisterType<IUserRepository, UserRepository>();
+				.RegisterType<IQuoteSearcher, LuceneQuoteSearcher>()
+				.RegisterType<ISearchIndexLocator, SearchIndexLocator>(
+					new ContainerControlledLifetimeManager(), 
+					new InjectionFactory(container => new SearchIndexLocator(((NameValueCollection)ConfigurationManager.GetSection("vgquotes"))["luceneIndexDirectory"]))
+				).RegisterType<IUserRepository, UserRepository>();
+		}
+
+		protected override void AfterStartUp() {
+			var logger = Container.Resolve<ILogger>();
+			logger.Info("Building lucene index");
+			Container.Resolve<IQuoteSearcher>().BuildIndex();
+			logger.Info("Done building lucene index");
 		}
 
 		protected override void RegisterRoutes(RouteCollection routes) {
 			routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
 			routes.IgnoreRoute("media/{*anything}");
 
-
 			routes.MapRoute("api", "api/{action}/{id}/{*criteria}", new { controller = "Api" }, new { action = "game|system|category|publisher|quote", id = @"\d+|all" });
-
 			routes.MapRoute("home", "{action}", new { controller = "Home", action = "Index" }, new { action = "about|contact" });
-			
 			routes.MapRoute("best", "best/{start}-{end}/", new { controller = "Quote", action = "Best" }, new { start = @"\d+", end = @"\d+" });
 			routes.MapRoute("browse", "browse/{*qualifiers}", new { controller = "Quote", action = "Browse" });
-			routes.MapRoute("quote", "{action}", new { controller = "Quote" }, new { action = "submit|search|recent|random|best|vote|report" });
+			routes.MapRoute("search", "search/{*searchQuery}", new { controller = "Quote", action = "Search" });
+			routes.MapRoute("quote", "{action}", new { controller = "Quote" }, new { action = "submit|recent|random|best|vote|report" });
 			routes.MapRoute("individual-quote", "quote/{id}/{*text}", new { controller = "Quote", action = "Quote" }, new { id = @"\d+" });
 			routes.MapRoute("create-category", "category/create", new { controller = "Quote", action = "CreateCategory" });
+			routes.MapRoute("default", "{controller}", new { controller = "home", action = "index" });
 		}
 	}
 }

Src/VideoGameQuotes.Web/Models/SearchModel.cs

@@ -0,0 +1,11 @@
+using System.Collections.Generic;
+using VideoGameQuotes.Api;
+using VideoGameQuotes.Api.Search;
+
+namespace VideoGameQuotes.Web.Models {
+	public class SearchModel {
+		public User User { get; set; }
+		public IEnumerable<SearchResult> Results { get; set; }
+		public string SearchQuery { get; set; }
+	}
+}

Src/VideoGameQuotes.Web/VideoGameQuotes.Web.csproj

@@ -94,6 +94,7 @@
     <Compile Include="Models\QuoteCollectionModel.cs" />
     <Compile Include="Models\QuoteModel.cs" />
     <Compile Include="Models\ReportModel.cs" />
+    <Compile Include="Models\SearchModel.cs" />
     <Compile Include="Models\VoteModel.cs" />
     <Compile Include="Validation\NonEmptyText.cs" />
     <Compile Include="Security\IsValidUserAttribute.cs" />
@@ -134,6 +135,7 @@
     <Content Include="Views\Quote\Quote.aspx" />
     <Content Include="Views\Quote\QuoteNotFound.aspx" />
     <Content Include="Views\Quote\Recent.aspx" />
+    <Content Include="Views\Quote\Search.aspx" />
     <Content Include="Views\Quote\Submit.aspx" />
     <Content Include="Views\Shared\ExceptionView.ascx" />
     <Content Include="Views\Shared\Forbidden.aspx" />

Src/VideoGameQuotes.Web/Views/Quote/Search.aspx

@@ -0,0 +1,14 @@
+<%@ Page Title="" Language="C#" Inherits="System.Web.Mvc.ViewPage<VideoGameQuotes.Web.Models.SearchModel>" MasterPageFile="~/Views/Shared/Site.Master" %>
+<%@ Import Namespace="VideoGameQuotes.Web.Models" %>
+<asp:Content runat="server" ID="Title" ContentPlaceHolderID="TitleContent">Search<%= !string.IsNullOrEmpty(Model.SearchQuery) ? " - " + Model.SearchQuery : "" %></asp:Content>
+<asp:Content runat="server" ID="Main" ContentPlaceHolderID="MainContent">
+	<p>
+		Search results for: <span class="Search-query"><%: Model.SearchQuery %></span>
+	</p>
+
+	<%
+		foreach (var result in Model.Results) {
+			Html.RenderPartial("SingleQuote", new QuoteModel {Quote = result.Quote, User = Model.User });
+		}
+	%>
+</asp:Content>

Src/VideoGameQuotes.Web/Views/Shared/Site.Master

@@ -29,9 +29,9 @@
 							<li><%= Html.ActionLink("Submit", "submit", "Quote", null, new { title = "Submit a new quote" }) %></li>
 							<li><%= Html.ActionLink("About", "about", "Home", null, new { title = "About the site" })%></li>
 							<li class="searchbox">
-								<% using (Html.BeginForm("search", "quote", FormMethod.Get)) { %>
+								<% using (Html.BeginForm("search", "quote", FormMethod.Get, new { id = "search-form" })) { %>
 									<div>
-										<%= Html.TextBox("term") %>
+										<%= Html.TextBox("searchQuery", null, new { id = "search-query" })%>
 										<input type="image" src="/media/images/search.png" alt="search" title="search quotes, games, systems" />
 									</div>
 								<% } %>

Src/VideoGameQuotes.Web/Web.config

@@ -4,7 +4,12 @@
 	<configSections>
 		<!--<section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection"/>-->
 		<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
+		<section name="vgquotes" type="System.Configuration.NameValueSectionHandler"/>
 	</configSections>
+
+	<vgquotes>
+		<add key="luceneIndexDirectory" value="c:\users\tmont\code\VideoGameQuotes\lucene_index"/>
+	</vgquotes>
 	
 	<log4net>
 		<appender name="DebugAppender" type="log4net.Appender.DebugAppender">

Src/VideoGameQuotes.Web/media/js/vgquotes.js

@@ -7,11 +7,19 @@
 	}
 
 	$(document).ready(function() {
+		$("#search-form").submit(function() {
+			var searchQuery = $.trim($("#search-query").val());
+			if (searchQuery.length > 0) {
+				window.location = "/search/" + searchQuery;
+			}
+
+			return false;
+		});
+
 		var getQuoteId = function($container) {
 			return $container.find("input.quote-id").val();
 		};
 
-
 		var voting = false;
 		$(".vote-for, .vote-against").live("click", function() {
 			if (voting) {

Tests/VideoGameQuotes.Api.Tests/LuceneTests.cs

@@ -0,0 +1,53 @@
+using System;
+using Lucene.Net.Analysis.Standard;
+using Lucene.Net.Documents;
+using Lucene.Net.QueryParsers;
+using Lucene.Net.Search;
+using NUnit.Framework;
+using VideoGameQuotes.Api.Search.Lucene;
+
+namespace VideoGameQuotes.Api.Tests {
+
+	
+
+	[TestFixture, Ignore]
+	public class LuceneTests {
+
+		[Test]
+		public void Should_use_lucene() {
+			var analyzer = new StandardAnalyzer(new [] { "the", "of", "a", "an" });
+			const string indexDirectory = @"c:\users\tmont\code\lucene_index_test";
+			var indexWriter = new Lucene.Net.Index.IndexWriter(indexDirectory, analyzer, true);
+
+			indexWriter.AddDocument(CreateDocument(4, "cat"));
+			indexWriter.AddDocument(CreateDocument(5, "catty"));
+			indexWriter.AddDocument(CreateDocument(6, "Catherine"));
+			indexWriter.AddDocument(CreateDocument(7, "vacate"));
+			indexWriter.AddDocument(CreateDocument(8, "cat cat cat"));
+			indexWriter.AddDocument(CreateDocument(9, "i'm trying to herd a cat, a cat, I say!"));
+			indexWriter.AddDocument(CreateDocument(10, "the cat"));
+
+			indexWriter.Optimize();
+			indexWriter.Close();
+
+			var parser = new QueryParser("text", analyzer);
+			
+			var query = parser.Parse("cat");
+
+
+			var searcher = new IndexSearcher(indexDirectory);
+			var hits = searcher.Search(query).ToEnumerable();
+			foreach (var hit in hits) {
+				Console.WriteLine("id: {0}, document: {1}, score: {2}", hit.GetId(), hit.GetDocument(), hit.GetScore());
+			}
+		}
+
+		private static Document CreateDocument(int id, string text) {
+			var document = new Document();
+			document.Add(new Field("id", id.ToString(), Field.Store.YES, Field.Index.UN_TOKENIZED));
+			document.Add(new Field("text", text, Field.Store.YES, Field.Index.TOKENIZED));
+			return document;
+		}
+
+	}
+}

Tests/VideoGameQuotes.Api.Tests/VideoGameQuotes.Api.Tests.csproj

@@ -34,6 +34,9 @@
     <Reference Include="log4net">
       <HintPath>..\..\Lib\log4net.dll</HintPath>
     </Reference>
+    <Reference Include="Lucene.Net">
+      <HintPath>..\..\Lib\Lucene.Net.dll</HintPath>
+    </Reference>
     <Reference Include="Moq">
       <HintPath>..\..\Lib\Moq.dll</HintPath>
     </Reference>
@@ -63,6 +66,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="LuceneTests.cs" />
     <Compile Include="QuoteTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="NHibernate\SchemaExporter.cs" />