lucene.net

A category tree like this: root_1 sub_1 sub_2 ... to sub_20 Every document has a sub category(like sub_2 ). Now, I only wrote sub_2 in lucene index: new NumericField("category",...).setIntValue(sub_2.getID()); I want to get all root_1 's documents, using BooleanQuery (merge the sub_1 to sub_20 ) to search or write an other category in every entry document: new NumericField("category",...).setIntValue(sub_2.getID()); new NumericField("category",...).setIntValue(root_1.getID());//sub_2's ancestor category Which is the better choice? Mark Leighton Fisher I would use a path enumeration/'Dewey

Am posting this question again as my query is not answered. Am working on a book search api using Lucene. User can search for a book whose title or description field contains C.F.A... Am using StandardAnalyzer alongwith a list of stop words. Am using MultiFieldQueryParser for parsing above string.But after parsing, its removing the dots in the string. What am i missing here? Thanks. itsadok As you mentioned, this is a dupe of this question . I suggest you at least add a link to it in your question. Also, I would urge you to create a user account, since right now it's not possible to look at

I'm using AzureDirectory and Lucene .NET 2.9.4 but I have wo problems: searcher doesn't seems to be so fast. I'm indexing with these settings: indexWriter.SetUseCompoundFile(false); indexWriter.SetMergeFactor(1000); index is around 3.5gb and it has 12.126.436 docs. To create the indexSearcher it takes around 5 min or more even if index is already on local disk. Is the index too big? I tried to perform a single term search using MultiFieldQueryParser on two fields. TermVector on fields is off Everywhere is suggested to create only an instance of indexSearcher and share it between queries (in

I have a RAMDirectory with 1.5 million documents and I'm searching using a PrefixQuery for a single field. When the search text has a length of 3 or more characters, the search is extremely fast, less than 20 milliseconds. But when the search text has a length of less than 3 characters, the search might take even a full 1 second. Since it's an auto complete feature and the user starts with one character (and there are results that are indeed 1 char length), I cannot restrict the length of the search text. The code is pretty much: var symbolCodeTopDocs = searcher.Search(new PrefixQuery(new Term

In lucene, I can do the following doc.GetField("mycustomfield").StringValue(); This retrieves the value of a column in an index's document. My question, for the same 'doc' , is there a way to get the Doc. Id ? Luke displays it hence there must be a way to figure this out. I need it to delete documents on updates. I scoured the docs but have not found the term to use in GetField or if there already is another method. Turns out you have to do this: var hits = searcher.Search(query); var result = hits.Id(0); As opposed to var results = hits.Doc(i); var docid = results.<...> //there's nothing I

I want to delete all the previously created indices. I am using Lucene.net . I tried the following: Term term = new Term(); //empty because I want to delete all the indices IndexReader rdr = IndexReader.Open(_directory); rdr.DeleteDocuments(term); rdr.Close(); But I get error. Any idea how to go about it? The best way to delete an index is to wipe the filesystem directory. However, if you wan't to regenerate the index, the easiest way is to open a new indexwriter with the create parameter as true. It will start a new index deleting the contents of the existing one. although the thread is old i

I'm trying to figure out where Lucene.Net.Highlight.dll and the corresponding formatting classes (such as SimpleHTMLFormatter ) have gone to. The last time I downloaded Lucene.Net this assembly was packaged up in the zip file, however this isn't the case with the latest download I could find and I couldn't find any other references to it on this page , or any other page for that matter. Does anyone know where it is hiding? There is no binary releases of the recent Lucene.Net versions. You will have to check it out from : https://svn.apache.org/repos/asf/lucene/lucene.net/trunk/C#/contrib

I am building a C# windows form application that searches a database and displaying the results. I am trying to find a guide on how to create facets with Lucene but it seems that I can't. I am creating the index and I am able to search a database but I want to create facets for the results. Is there any guide or a project to use as example? EDIT here's the link to my project so far https://github.com/assignment128A-adopse/Assignment any help/suggestion would be helpful There are a few options. Option #1 In Lucene.Net 4.8.0, you can use the Lucene.Net.Facet module to setup faceted search. See