lucene.net

If a user enters a phrase in the search box (with or without quotes), I want the results that show first be the documents that have the exact phrase in the document title, and other documents showing after it. This is what I have tried but it fails to give me the search results in that order: During indexing I say: AddStringFieldToDocument(document, "keyWord", this.BuildKeywordsString(), Field.Store.NO, Field.Index.ANALYZED, false); AddStringFieldToDocument(document, "title", this.Title, Field.Store.NO, Field.Index.ANALYZED, false, 4f); private void AddStringFieldToDocument(Document document,

I'm building a simple site that allows users to post text content and I want to add it to a search index as it gets posted, so my site search is up to date. From what I can tell Lucene.NET is a good full text search framework. I've found very few examples of how to use it though. Can anyone post some good references for learning about Lucene? Some links: Lucene tutorial Another tutorial Lucene FAQ Lucene in action The new edition should be out soon The key point is that any Java material for Lucene is great for Lucene.net. I should note though, that from your description of requirements, Solr

I have integrated NHibernate.Search into my web app by following tutorials from the following sources: NHibernate.Search using Lucene.NET Full Text Index (Part 1) Using NHibernate.Search with ActiveRecord I have also successfully batch-indexed my database, and when testing against Luke, I can search for terms that reside in whatever entities I marked as indexable. However , when I attempt to update many-to-many entities via my web app, my parent index does not seem to update. For example: public class Books { HasAndBelongsToMany(typeof(Author), Table = "BookAuthor", ColumnKey = "BookId",

Could anyone give an example of how to use the MoreLikeThis feature in Lucene.NET. I have searched online and cannot find a single example. (Resurrecting an old question!) As an example for Lucene.Net 2.9.4g: var moreLikeThis = new Lucene.Net.Search.Similar.MoreLikeThis(indexReader); moreLikeThis.SetAnalyzer(analyzer); moreLikeThis.SetFieldNames(fieldNames); moreLikeThis.SetStopWords(stopWords); moreLikeThis.SetMinWordLen(2); var query = moreLikeThis.Like(new System.IO.StringReader(similarity)); This generates a Lucene.Net.Search.Query object that can be used to search for documents that are

I know that Lucene has extensive support for wildcard searches and I know you can search for things like: Stackover* (which will return Stackoverflow ) That said, my users aren't interested in learning a query syntax. Can Lucene perform this type of wildcard search using an out-of-box Analyzer? Or should I append "*" to every search query? Doing this with string manipulations is tricky to get right, especially since the QueryParser supports boosting, phrases, etc. You could use a QueryVisitor that rewrites TermQuery into PrefixQuery. public class PrefixRewriter : QueryVisitor { protected

I've come to the point where I need to store some additional data about where a particular field comes from in my Lucene.Net index. Specifically, I want to attach a guid to certain fields of a document when the field is added to the document, and retrieve it again when I get the document from a search result. Is this possible? Edit: Okay, let me clarify a bit by giving an example. Let's say I have an object that I want to allow the user to tag with custom tags like "personal", "favorite", "some-project". I do this by adding multiple "tag" fields to the document, like so: doc.Add( new Field(

I am creating an index using Lucene .Net 2.9.2. After a lot of indexing, the index has many segments and deleted documents, so I am calling Optimize(numSegmets) on the IndexWriter. The index's segments count is indeed reduced to the value of numSegmets , but it still has deletions... doesnt a call to Optimize should also remove all deleted documents? My question is very important so I could know if this is how Lucene works or maybe I have some bug... Edit: here is my code snippet: IndexWriter writer = new IndexWriter(/*open writer from index directroy*/); writer.Optimize(5); writer.Commit();