public PanGuAnalyzer()
{
Analyzer = new Lucene.Net.Analysis.PanGu.PanGuAnalyzer();
}
/// <summary>
/// Does the search and stores the information about the results.
/// </summary>
private void search()
{
DateTime start = DateTime.Now;
// create the searcher
// index is placed in "index" subdirectory
string indexDirectory = Server.MapPath("~/App_Data/index");
//var analyzer = new StandardAnalyzer(Version.LUCENE_30);
var analyzer = new Lucene.Net.Analysis.PanGu.PanGuAnalyzer();
IndexSearcher searcher = new IndexSearcher(FSDirectory.Open(indexDirectory));
// parse the query, "text" is the default field to search
var parser = new QueryParser(Version.LUCENE_30, "name", analyzer);
parser.AllowLeadingWildcard = true;
Query query = parser.Parse(this.Query);
// create the result DataTable
this.Results.Columns.Add("title", typeof(string));
this.Results.Columns.Add("sample", typeof(string));
this.Results.Columns.Add("path", typeof(string));
this.Results.Columns.Add("url", typeof(string));
// search
TopDocs hits = searcher.Search(query, 200);
this.total = hits.TotalHits;
// create highlighter
IFormatter formatter = new SimpleHTMLFormatter("<span style=\"font-weight:bold;\">", "</span>");
SimpleFragmenter fragmenter = new SimpleFragmenter(80);
QueryScorer scorer = new QueryScorer(query);
Highlighter highlighter = new Highlighter(formatter, scorer);
highlighter.TextFragmenter = fragmenter;
// initialize startAt
this.startAt = InitStartAt();
// how many items we should show - less than defined at the end of the results
int resultsCount = Math.Min(total, this.maxResults + this.startAt);
for (int i = startAt; i < resultsCount; i++)
{
// get the document from index
Document doc = searcher.Doc(hits.ScoreDocs[i].Doc);
TokenStream stream = analyzer.TokenStream("", new StringReader(doc.Get("name")));
String sample = highlighter.GetBestFragments(stream, doc.Get("name"), 2, "...");
String path = doc.Get("path");
// create a new row with the result data
DataRow row = this.Results.NewRow();
row["title"] = doc.Get("name");
//row["path"] = "api/" + path;
//row["url"] = "www.dotlucene.net/documentation/api/" + path;
//row["sample"] = sample;
this.Results.Rows.Add(row);
}
searcher.Dispose();
// result information
this.duration = DateTime.Now - start;
this.fromItem = startAt + 1;
this.toItem = Math.Min(startAt + maxResults, total);
}
