lucene.net

I'm using RangeQuery to get all the documents which have amount between say 0 to 2. When i execute the query, Lucene gives me documents which have amount greater than 2 also. What am I missing here? Here is my code: Term lowerTerm = new Term("amount", minAmount); Term upperTerm = new Term("amount", maxAmount); RangeQuery amountQuery = new RangeQuery(lowerTerm, upperTerm, true); finalQuery.Add(amountQuery, BooleanClause.Occur.MUST); and here is what goes into my index: doc.Add(new Field("amount", amount.ToString(), Field.Store.YES, Field.Index.UN_TOKENIZED, Field.TermVector.YES)); UPDATE : Like

Am hoping someone with enough insight into the inner workings of Lucene might be able to point me in the right direction =) I'll skip most of the surrounding irellevant code, and cut right to the chase. I have a Lucene index, to which I am adding the following field to the index (variables replaced by their literal values): document.Add( new Field("Typenummer", "E5CEB501A244410EB1FFC4761F79E7B7", Field.Store.YES , Field.Index.UN_TOKENIZED)); Later, when I search my index (using other types of queries), I am able to verify that this field does indeed appear in my index - like when looping

I am currently attempting to use Lucene to search data populated in an index. I can match on exact phrases by enclosing it in brackets (i.e. "Processing Documents"), but cannot get Lucene to find that phrase by doing any sort of "Processing Document*". The obvious difference being the wildcard at the end. I am currently attempting to use Luke to view and search the index. (it drops the asterisk at the end of the phrase when parsing) Adding the quotes around the data seems to be the main culprit as searching for document* will work, but "document*" does not Any assistance would be greatly

Could I write (with IndexWriter ) new documents into index while it is opened for reading (with IndexReader )? Or must I close reading before writing? Could I read/search documents (with IndexReader ) in index while it is opened for writing (with IndexWriter )? Or must I close writing before reading? Is Lucene.Net thread safely or not? Or must I write my own? You may have any amount of readers/searchers opened at any time, but only one writer. This is enforced by a directory specific lock, usually involving a file named "write.lock". Readers open snapshots, and writers adds more data to the

When should I use Lucene's RAMDirectory? What are its advantages over other storage mechanisms? Finally, where can I find a simple code example? When you don’t want to permanently store your index data. I use this for testing purposes. Add data to your RAMDirectory, Do your unit tests in RAMDir. e.g. public static void main(String[] args) { try { Directory directory = new RAMDirectory(); Analyzer analyzer = new SimpleAnalyzer(); IndexWriter writer = new IndexWriter(directory, analyzer, true); OR public void testRAMDirectory () throws IOException { Directory dir = FSDirectory.getDirectory

I've got my searcher working really well, however it does tend to return results that are obsolete. My site is much like NerdDinner whereby events in the past become irrelevant. I'm currently indexing like this note: my example is in VB.NET, but I don't care if examples are given in C# Public Function AddIndex(ByVal searchableEvent As [Event]) As Boolean Implements ILuceneService.AddIndex Dim writer As New IndexWriter(luceneDirectory, New StandardAnalyzer(), False) Dim doc As Document = New Document doc.Add(New Field("id", searchableEvent.ID, Field.Store.YES, Field.Index.UN_TOKENIZED)) doc.Add

How to enable stemming when searching using lucene.net? To do this you need to write your own analyzer class. This is relatively straightforward. Here is the one that I am using. It combines stop word filtering. Porter stemming and (this may be too much for your needs) stripping of accents from characters. /// <summary> /// An analyzer that implements a number of filters. Including porter stemming, /// Diacritic stripping, and stop word filtering. /// </summary> public class CustomAnalyzer : Analyzer { /// <summary> /// A rather short list of stop words that is fine for basic search use. /// <