i am just browsing article on lucene.net. i got some sample code for create index using lucene.net and few lines of code is not clear to me. here is those line
protected void btnCreateIndex_Click(object sender, EventArgs e)
{
IndexWriter writer = new IndexWriter(MapPath("~/searchlucene/"), new StandardAnalyzer(), false);
IndexDocument(writer, "About Hockey", "hockey", "Hockey is a cool sport which I really like, bla bla");
IndexDocument(writer, "Some great players", "hockey", "Some of the great players from Sweden - well Peter Forsberg, Mats Sunding, Henrik Zetterberg");
IndexDocument(writer, "Soccer info", "soccer", "Soccer might not be as fun as hockey but it's also pretty fun");
IndexDocument(writer, "Players", "soccer", "From Sweden we have Zlatan Ibrahimovic and Henrik Larsson. They are the most well known soccer players");
IndexDocument(writer, "1994", "soccer", "I remember World Cup 1994 when Sweden took the bronze. we had great players. players , bla bla");
IndexDocument(writer, "BBA-header", "BBA-321type", "Hello BBA");
writer.Optimize();
writer.Close();
}
private void IndexDocument(IndexWriter writer, string sHeader, string sType, string sContent)
{
Document doc = new Document();
doc.Add(new Field("header", sHeader, Field.Store.YES, Field.Index.TOKENIZED));
doc.Add(new Field("type", sType, Field.Store.YES, Field.Index.TOKENIZED));
doc.Add(new Field("content", sContent, Field.Store.YES, Field.Index.TOKENIZED));
writer.AddDocument(doc);
}
i have couple of question
1) doc.Add(new Field("header", sHeader, Field.Store.YES, Field.Index.TOKENIZED)); what is the meaning of this line. Field.Index.TOKENIZED what is TOKENIZED & UNTOKENIZED?? when i search keyword specified in type argument then nothing is coming. just do not understand the behaviour
here is sample for search where i specify a keyword which was index as type
ListBox1.Items.Clear();
var searcher = new Lucene.Net.Search.IndexSearcher(MapPath("~/searchlucene/"));
var oParser = new Lucene.Net.QueryParsers.QueryParser("content", new StandardAnalyzer());
string sHeader = " OR (header:" + TextBox1.Text + ")";
string sType = " OR (type:" + TextBox1.Text + ")";
string sSearchQuery = "(" + TextBox1.Text + sHeader + sType + ")";
var oHitColl = searcher.Search(oParser.Parse(sSearchQuery));
for (int i = 0; i < oHitColl.Length(); i++)
{
Document oDoc = oHitColl.Doc(i);
ListBox1.Items.Add(new ListItem(oDoc.Get("header") + oDoc.Get("type") + oDoc.Get("content")));
}
searcher.Close();
please someone help me to understand to drive out my confusion. thanks
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