實戰 .Net 資料訪問層 - 4

訪問|資料 代碼3：我的Data Entity – 1，應用程式中的Data Entity

// MyCustomer：包含基本欄位的Customer，支援資料列表，從MyDef繼承

[Serializable()]

public class MyCustomer: MyDef

{

public string Id;

public string Name;

public string Phone;



public MyCustomer() { }

public MyCustomer(ArrayList al) : base(al) { }

}



// MyDef：提供當前應用程式所需的Data Entity支援，

// 包括O/R Mapping，XML，從DefBase繼承

[Serializable()]

public class MyDef: DefBase, IList, IEnumerable

{

// O/R Mapping fields

[NonSerialized()]

protected internal ObjectSet _ostOrm = null;

...



// XML fields

[NonSerialized()]

protected internal XmlNode _xmlNode = null;

...



public MyDef() { }

public MyDef(ArrayList al) : base(al) { }

public MyDef(ObjectSet ostOrm)

{

this._ostOrm = ostOrm;

this._typeEntity =

MyEntityType.ORM_OBJECTSPACES_OBJECTSET;

}



public MyDef(XmlNode xmlNode)

{

this._xmlNode = xmlNode;

this._typeEntity = MyEntityType.XML_NODE;

}

...

}















































































































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