當麻許的超技八

{

"Id":"9",

"Memo":"當麻左手凌空劈出，右掌跟著迅捷之極的劈出，左手掌力先發後到，右手掌力後發先到，兩股力道交錯而前，詭異之極",

"Birthday":"1900-01-10T00:00:00",

"Age":9

}

Field f_Age = new Field("Age", ds["Age"].ToString(), Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO);

NumericField f_Age = new NumericField("Age", Field.Store.YES, true);

f_Age.SetIntValue(int.Parse(ds["Age"].ToString()));

Stopwatch sw = new Stopwatch();

// 讀取所有資料

var di = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory + "\\Source\\");

sw.Start();

var allObjects = di.GetFiles().Select(

    x => JObject.Parse((File.ReadAllText(x.FullName)))).ToArray();

//Index 存放路徑

string indexPath = AppDomain.CurrentDomain.BaseDirectory + "\\Index5\\";

FSDirectory dir = FSDirectory.Open(new DirectoryInfo(indexPath));

//IndexWriter

IndexWriter indexWriter = new IndexWriter(dir, new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29), true, IndexWriter.MaxFieldLength.UNLIMITED);

// 還原且加入需做 index 的欄位

foreach (JObject ds in allObjects)

{

    Document doc = new Document();

    // 把每一個欄位都建立索引

    Field f_Id = new Field("Id", ds["Id"].ToString(), Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO);

    Field f_Memo = new Field("Memo", ds["Memo"].ToString(), Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO);

    Field f_BirthDay = new Field("BirthDay", DateTime.Parse(ds["Birthday"].ToString()).ToString("yyyyMMdd"), Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO);

    // 建立數字型索引欄位

    NumericField f_Age = new NumericField("Age", Field.Store.YES, true);

    f_Age.SetIntValue(int.Parse(ds["Age"].ToString()));

    doc.Add(f_Id); doc.Add(f_Age); doc.Add(f_Memo); doc.Add(f_BirthDay);

    indexWriter.AddDocument(doc);

}

indexWriter.Optimize();

indexWriter.Commit();

indexWriter.Close();

sw.Stop();

Response.Write("建立" + allObjects.Length + "筆索引花費時間: " + sw.Elapsed + "");

// 搜尋 Age 範圍

NumericRangeQuery nquery = NumericRangeQuery.NewIntRange("Age", 11, 20, true, true); 

// 啟用監看

Stopwatch sw = new Stopwatch();

sw.Start();

// 讀取索引

string indexPath = AppDomain.CurrentDomain.BaseDirectory.ToString() + "\\Index5\\";

DirectoryInfo dirInfo = new DirectoryInfo(indexPath);

FSDirectory dir = FSDirectory.Open(dirInfo);

IndexSearcher search = new IndexSearcher(dir, true);

// 針對 Memo 欄位進行搜尋

QueryParser parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "Age", new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29));

// 搜尋 Age 範圍

NumericRangeQuery nquery = NumericRangeQuery.NewIntRange("Age", 11, 20, true, true); 

Sort sort = new Sort(new SortField("Id", 4));

// 開始搜尋

var hits = search.Search(nquery, null, search.MaxDoc(), sort).ScoreDocs;

sw.Stop();

Response.Write("花費時間:" + sw.Elapsed + "<br /><hr />");

Response.Write("資料比數:" + hits.Length + "<br /><hr />");

Response.Write("Result:<br />");

foreach (var res in hits)

{

    Response.Write("Id:" + search.Doc(res.doc).Get("Id") + "  BirthDay=" + search.Doc(res.doc).Get("BirthDay") + "  Memo=" + search.Doc(res.doc).Get("Memo") + "<br />");

}