我只是在 lucene.net 上浏览文章。我得到了一些使用 lucene.net 创建索引的示例代码,我不清楚几行代码。这是那些线
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);
}
我有几个问题
1) doc.Add(new Field("header", sHeader, Field.Store.YES, Field.Index.TOKENIZED)); 这条线是什么意思。Field.Index.TOKENIZED什么是 TOKENIZED 和 UNTOKENIZED?当我搜索类型参数中指定的关键字时,什么都没有。只是不了解行为
这是搜索示例,其中我指定了一个作为索引类型的关键字
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();
请有人帮助我理解以消除我的困惑。谢谢