/// <summary>
/// �������ڡ��������ķ���
/// </summary>
private void search()
{
DateTime start = DateTime.Now;
//try
//{
// }
//catch (Exception e)
//{
// Response.Write("<script type='text/javascript'>window.alert(' " + e.ToString() + " ');</script>");
//}
// ��������
//�������ڡ�index��Ŀ¼��
string indexDirectory1 = Server.MapPath("./")+"index\\1.5\\";
IndexSearcher searcher1 = new IndexSearcher(indexDirectory1);
string indexDirectory2 = Server.MapPath("./") + "index\\1.4\\";
IndexSearcher searcher2 = new IndexSearcher(indexDirectory2);
//System.String index3 = @"\\192.168.1.130\index\1.5";
//Lucene.Net.Index.IndexReader reader3;
Lucene.Net.Search.ParallelMultiSearcher searcher;
/* if (System.IO.Directory.Exists(index3))//�Ƿ����Ŀ¼
{
reader3 = Lucene.Net.Index.IndexReader.Open(index3);//��ȡ������ȡ����ʵ�����ô�Ϊ������ȡ��reader��ȡ�ļ���Ϊindex���ļ���(Ŀ¼)
IndexSearcher searcher3 = new IndexSearcher(reader3);
searcher = new Lucene.Net.Search.ParallelMultiSearcher(new Lucene.Net.Search.Searchable[] { searcher3,searcher1, searcher2 });
}
else
{
searcher = new Lucene.Net.Search.ParallelMultiSearcher(new Lucene.Net.Search.Searchable[] { searcher1, searcher2 });
}*/
searcher = new Lucene.Net.Search.ParallelMultiSearcher(new Lucene.Net.Search.Searchable[] { searcher1, searcher2 });
//====================>(1)�����ѯ����<==============================================
//System.String field = "text";//���ڱ�����ҳɹ����ļ����ڵ�Ŀ¼
//QueryParser parser = new QueryParser(field, new StandardAnalyzer());//������ѯ��������ָ����field(������ָcontents��Ŀ¼), analyzer������������
//====================>(2)�����ѯ����<==============================================
string[] strs = new string[] { "text", "path","fullpath","keywords","description","title" };
Lucene.Net.QueryParsers.QueryParser parser = new Lucene.Net.QueryParsers.MultiFieldQueryParser(strs, new StandardAnalyzer());
parser.SetDefaultOperator(Lucene.Net.QueryParsers.QueryParser.OR_OPERATOR);
// ���������
this.Results.Columns.Add("link", typeof(string));
this.Results.Columns.Add("title", typeof(string));
this.Results.Columns.Add("sample", typeof(string));
this.Results.Columns.Add("path", typeof(string));
// ����
Query query = parser.Parse(this.Query);//����һ����ѯ����ָ����ѯ����Query_condition������ this.Query_txt.Text��
Hits hits = searcher.Search(query);
this.total = hits.Length();
// ���� �����Ĺؼ���,Ĭ����<b>..</b>
// �����ָ��<read>..</read>
SimpleHTMLFormatter simpleHTMLFormatter = new SimpleHTMLFormatter("<B style='color:Red;'>", "</B>");
Highlighter highlighter = new Highlighter(simpleHTMLFormatter, new QueryScorer(query));
// ���һ�������Ҫ���صģ����������ݳ���
// ���̫С����ֻ�����ݵĿ�ʼ���ֱ��������������ҷ��ص�����Ҳ�� ̫����ʱ̫�˷��ˡ�
highlighter.SetTextFragmenter(new SimpleFragmenter(100));
// initialize startAt
this.startAt = initStartAt();
// ��ʾ�������ġ������Ŀ
int resultsCount = smallerOf(total, this.maxResults + this.startAt);
for (int i = startAt; i < resultsCount; i++)
{
// �õ����е��ĵ�
Document doc = hits.Doc(i);
//��ӽ�β����֤��β������Ų�������
string title = doc.Get("title") + " ";
// �õ��ļ�����
System.String text =Search.CutString( doc.Get("text"),480);
// �õ��ļ�������ȷ·��
string path = doc.Get("path");
string orpath = doc.Get("fullpath");
Lucene.Net.Analysis.TokenStream titkeStream = analyzer.TokenStream("title", new System.IO.StringReader(title));//��Ŀ
Lucene.Net.Analysis.TokenStream tokenStream = analyzer.TokenStream("text", new System.IO.StringReader(text));//ժҪ
Lucene.Net.Analysis.TokenStream pathStream = analyzer.TokenStream("path", new System.IO.StringReader(path));//��ʾ��·��
System.String result = highlighter.GetBestFragments(tokenStream, text, 2, "...");
string tresult = highlighter.GetBestFragments(titkeStream, title, 2, "..");
string pathwords = highlighter.GetBestFragments(pathStream, path, 2, ".."); //·����ʱ��ʾ
// ����һ������ʾ�������Ľ��
DataRow row = this.Results.NewRow();
if (tresult == "")
{
row["title"] = title;
}
else {
row["title"] = tresult;
}
if (getpath(row, System.IO.Path.GetFileName(path.Replace("\\", "/"))))
{
row["link"]=getFullpath( System.IO.Path.GetFileName(doc.Get("path")));
}
else {
row["link"] =orpath;
if (pathwords=="")
{
row["path"] = orpath;
}
else
{
row["path"] = pathwords.Replace("\\", "/");
}
}
if (result == ""){
row["sample"] = text;
}
else {
row["sample"] = result;
}
this.Results.Rows.Add(row);
}
searcher.Close();
// �����Ϣ
this.duration = DateTime.Now - start;
this.fromItem = startAt + 1;
this.toItem = smallerOf(startAt + maxResults, total);
}
