Lucene支持Unicode嗎？

我正在爲我的網站建立一個全文搜索工具，用asp.net mvc和mysql數據庫編碼。本網站適用於非英語語言。我已經開始使用Lucense作爲搜索文本的引擎，但我無法找到關於它是否支持unicode的任何信息？Lucene支持Unicode嗎？

有沒有人有任何關於Lucene是否支持Unicode的信息？我不想要一個令人討厭的驚喜..

有關實現lucene.net的初學者文章的鏈接將不勝感激。

來源

2011-01-06 Cyril Gupta

我非常行動http://www.amazon.com/Lucene-Action-Otis-Gospodnetic/dp/1932394281建議Lucene的 – 2011-01-06 07:08:11

是的。它完全支持unicode。
但是爲了分析，您應明確指定適當的詞幹和正確的詞組。至於樣本。下面是我們的最後一個項目

directory = new RAMDirectory(); 
      analyzer = new StandardAnalyzer(version, new Hashtable()); 
      var indexWriter = new IndexWriter(directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED); 
      using (var session = sessionFactory.OpenStatelessSession()) 
      { 
       organizations = session.CreateCriteria(typeof(Organization)).List<Organization>(); 
       foreach (var organization in organizations) 
       { 
        var document = new Document(); 
        document.Add(new Field("Id", organization.ID.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS)); 
        document.Add(new Field("FullName", organization.FullName, Field.Store.NO, Field.Index.ANALYZED_NO_NORMS)); 
        document.Add(new Field("ObjectTypeInvariantName", typeof(Organization).FullName, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS)); 
        indexWriter.AddDocument(document); 
       } 

       var persistentType = typeof(Order); 
       var classMetadata = DbContext.SessionFactory.GetClassMetadata(persistentType); 


       var properties = new List<PropertyInfo>(); 
       for (int i = 0; i < classMetadata.PropertyTypes.Length; i++) 
       { 
        var propertyType = classMetadata.PropertyTypes[i]; 
        if (propertyType.IsCollectionType || propertyType.IsEntityType) continue; 
        properties.Add(typeof(Order).GetProperty(classMetadata.PropertyNames[i])); 
       } 

       orders = session.CreateCriteria(typeof(Order)).List<Order>(); 
       var idProperty = typeof(Order).GetProperty(classMetadata.IdentifierPropertyName); 

       foreach (var order in orders) 
       { 
        var document = new Document(); 
        document.Add(new Field("Id", idProperty.GetValue(order, null).ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS)); 
        document.Add(new Field("ObjectTypeInvariantName", typeof(Order).FullName, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS)); 
        foreach (var property in properties) 
        { 
         var value = property.GetValue(order, null); 
         if (value != null) 
         { 

          document.Add(new Field(property.Name, value.ToString(), Field.Store.NO, Field.Index.ANALYZED_NO_NORMS)); 
         } 
        } 
        indexWriter.AddDocument(document); 
       } 
       indexWriter.Optimize(true); 
       indexWriter.Commit(); 
       return indexWriter.GetReader(); 
      }

我從NHibernate的查詢組織對象複製並付諸Lucene.NET

下面是簡單的搜索

var searchValue = textEdit1.Text; 

       var parser = new QueryParser(version, "FullName", analyzer); 
       parser.SetLocale(new CultureInfo("ru-RU")); 
       Query query = parser.Parse(searchValue); 
       var indexSearcher = new IndexSearcher(directory, true); 

       var docs = indexSearcher.Search(query, 10); 
       lblSearchTotal.Text = string.Format(totalPattern, docs.totalHits, organizations.Count() + orders.Count); 
       resultPanel.Controls.Clear(); 
       foreach (var found in docs.scoreDocs) 
       { 
        var document = indexSearcher.Doc(found.doc); 
        var objectId = document.Get("Id"); 
        var objectType = document.Get("ObjectTypeInvariantName"); 

        if (resultPanel.Controls.Count > 0) 
        { 
         var labelSeparator = CreateSeparatorLabelControl(); 
         resultPanel.Controls.Add(labelSeparator); 
        } 
        var labelCard = CreateFoundLabelControl(); 
        resultPanel.Controls.Add(labelCard); 

        var organization = organizations.Where(o => o.ID.ToString() == objectId).FirstOrDefault(); 
        if (organization != null) 
        { 
         labelCard.Text = string.Format("<b>{0}</b></br>{1}", organization.AccountNumber, organization.FullName); 
         labelCard.Tag = organization; 
         //labels[count].Text = string.Format("<b>{0}</b></br>{1}", organization.AccountNumber, organization.FullName); 
         //labels[count].Visible = true; 
        } 
        else 
        { 
         labelCard.Text = string.Format("Найден объект типа '{0}' с идентификатором '{1}'", objectType, objectId); 
         labelCard.Tag = mainForm.GetObject(objectType, objectId); 
        } 
        labelCard.Visible = true; 
        //count++; 
       }

來源

2011-01-06 06:58:26

也NHibernate的搜索可以使用。 – 2011-01-06 07:10:21