I use lucene.net to index the documents. My main aim was to get to search and have the line number and the line of text returned in a document.

Here's the code that indexes

using (TextReader contentsReader = new StreamReader(fi.FullName))
{
doc.Add(new StringField("FullFileName", fi.FullName, Field.Store.YES));
doc.Add(new StringField("LastModifiedDate", modDate, Field.Store.YES));
//doc.Add(new TextField("Contents", contentsReader.ReadToEnd(), Field.Store.YES));

int lineCount = 1;
string line = String.Empty;
while ((line = contentsReader.ReadLine()) != null)
{
doc.Add(new Int32Field("LineNo", lineCount, Field.Store.YES));
doc.Add(new TextField("Contents", line, Field.Store.YES));
lineCount++;
}

Console.ForegroundColor = ConsoleColor.Blue;
Console.WriteLine("adding " + fi.Name);
Console.ResetColor();
writer.AddDocument(doc);
}


As you can see I add the filename, modified date, then I loop through all the lines in the file and add a TextField for each line.

TextField

This is how I search:

Lucene.Net.Store.Directory directory = Lucene.Net.Store.FSDirectory.Open(new System.IO.DirectoryInfo(indexDir));
Lucene.Net.Search.IndexSearcher searcher = new Lucene.Net.Search.IndexSearcher(Lucene.Net.Index.DirectoryReader.Open(directory));
TopScoreDocCollector collector = TopScoreDocCollector.Create(100, true);
searcher.Search(query, collector);
ScoreDoc hits1 = collector.GetTopDocs().ScoreDocs;
for (int i = 0; i < hits1.Length; i++)
{
int docId = hits1[i].Doc;
float score = hits1[i].Score;

Lucene.Net.Documents.Document doc = searcher.Doc(docId);

string result = "FileName: " + doc.Get("FullFileName") + "n"+
" Line No: " + doc.Get("LineNo") + "n"+
" Contents: " + doc.Get("Contents");
}


Yet. My search results return 0 hits whereas if I simply comment out that while loop and uncomment the commented line above I get the results.

while

What could be the problem?

1 Answer
1

Where is your QueryParser and Query ?

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