Bobo-Browse.Net

This project has been a long time without maintenance,suggest moving to NightOwl888's BoboBrowse.Net project,it's still development.

This Bobo-Browse.Net is build for Lucene.Net 3.x.

if you still use Lucene.Net 2.x,you can see this project BoboBrowse.Net(https://bobo.codeplex.com/).

###Prebuilt FacetHandler types###

SimpleFacetHandler: Used when there is a discrete set of facet values, for example: color, with values: red,green,blue,white,black. Each document can have only 1 value in this field. When being indexed, this field should not be tokenized.

MultiValueFacetHandler: Similar to simple type field, multi field allows a document to have multiple values. When being indexed, this field can be tokenized. Or alternatively, one can index multiple values in multiple document fields under the same field name.

PathFacetHandler: Used to denote facet values with hierarchical structure, for example: "A/B/C/D" Each document can have only 1 value in this field. When being indexed, this field should not be tokenized.

RangeFacetHandler: Used to denote a range of facet, e.g. dates, prices etc. Each document can have only 1 value in this field. When being indexed, this field should not be tokenized. Furthermore, the values need to be formatted to ensure sorting by lexical order is the same as the value order.

SimpleGroupbyFacetHandler: The facet values order by multi facet handler(SimpleFacetHandler),like SQL group by statement.

###Building the Source###

Prerequisites:

• .NET Framework 3.5 SP1
• .NET Framework 4.0.x
• .NET Framework 4.5.x
• Windows PowerShell

NOTE: If you have not yet run Windows Powershell on your computer, you will need to run the following command from an elevated command prompt before you can build the source.

Set-ExecutionPolicy RemoteSigned

To build the source, run the following command from the root directory of the Git project (the same directory that contains the .git folder):

build.bat -v:1.1.1 -pv:1.1.1-alpha00006

The -v parameter is the file version number, and the -pv parameter is the NuGet package version number. The package version number can contain a pre-release tag as shown in the example, but is not required.

Once the source has been built, you can install Bobo-Browse.Net into your project using NuGet. In Visual Studio, open the Options dialog from the Tools menu. In the left pane, choose NuGet Package Manager > Package Sources. Click the "+" button. Name the package source "Local Bobo-Browse.Net Feed", and add a Windows file path to [Bobo-Browse Project Directory]\packages\packagesource\. You can then use either the UI or Package Manager Console to install Bobo-Browse.Net into your project by selecting the "Local Bobo-Browse.Net Feed" as the package source.

###Performance###

we recommend use a singleton pattern to create one instance of BoboBrowser in the application and interval update object in the background-thread.that can avoid frequency reload entity index file and reduce a memory usage.

public void TestSimpleBrowser()
{
	var query = new TermQuery(new Term("name", "asp.net"));
	Console.WriteLine(string.Format("query: <{0}>", query.ToString()));
	var request = new BrowseRequest()
	{
		Count = 10,
		Offset = 0,
		Query = query,
		Sort = new Sort(new SortField("price", SortField.DOUBLE,false)).GetSort()
	};

	var faceHandlers = new FacetHandler[] { new SimpleFacetHandler("category") };
	var browser = new BoboBrowser(BoboIndexReader.GetInstance(IndexReader.Open(_indexDir, true), faceHandlers));
	var factSpec = new FacetSpec() { OrderBy = FacetSpec.FacetSortSpec.OrderHitsDesc, MinHitCount = 1 };
	request.SetFacetSpec("category", factSpec);

	var result = browser.Browse(request);
	Console.WriteLine(string.Format("total hits:{0}", result.NumHits));
	Console.WriteLine("===========================");
	foreach (var facet in result.FacetMap["category"].GetFacets())
	{
		var category = _categories.First(k => k.Value == int.Parse(facet.Value.ToString()));
		Console.WriteLine("{0}:({1})", category.Key, facet.HitCount);
	}
	Console.WriteLine("===========================");
	for (var i = 0; i < result.Hits.Length; i++)
	{
		var doc = browser.Doc(result.Hits[i].DocId);
		var category = _categories.First(k => k.Value == int.Parse(doc.GetField("category").StringValue)).Key;
		Console.WriteLine(string.Format("{2} - {0} ${1} by {3}", doc.GetField("name").StringValue, doc.GetField("price").StringValue, category, doc.GetField("author").StringValue));
	}
}

output:

total hits:6
===========================
C#:(3)
WEB:(2)
AJAX:(1)
===========================
WEB - Bootstrap for ASP.NET MVC $11.49 by Pieter van der Westhuizen
WEB - Mobile ASP.NET MVC 5 $19.79 by Eric Sowell
C# - ASP.NET Web API 2: Building a REST Service from Start to Finish $23.45 by Jamie Kurtz , Brian Wortman
C# - Pro ASP.NET MVC 5 $27.49 by Adam Freeman
AJAX - Professional ASP.NET 3.5 AJAX $33.29 by Bill Evjen
C# - Designing Evolvable Web APIs with ASP.NET $33.34 by Pablo Cibraro