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实践ORM,创建基于Grove的.NET应用程序(二)

作者:未知 来源:月光软件站 加入时间:2005-2-28 月光软件站

实践ORM,创建基于Grove.NET应用程序(二)

 

撰稿 林学鹏 [email protected]

 

7)在当前项目的EntityDB下添加CustomerDB类,该类负责对Customer的数据库操作,包括添加,删除,修改等操作。

       8)重复7,完成AddressDB类。

 

CustomerDB.cs

     using System;

     using WebApp1.Entities;

     using Grove;

     using Grove.DataObject;

    

     public class CustomerDB

     {

         public CustomerDB()

         {

         }

         public void Insert(Customer c)

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              oo.BeginTranscation();

              try

              {

                   oo.InsertObject(c);

                   oo.Commit();

              }

              catch(System.Exception e)

              {

                   oo.Rollback();

                   throw e;

              }

              oo.Dispose();

         }

         public void Delete(Customer c)

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              oo.BeginTranscation();

              try

              {

                   oo.RemoveObject(c);

                   oo.Commit();

              }

              catch(System.Exception e)

              {

                   oo.Rollback();

                   throw e;

              }

              oo.Dispose();         

         }

         public void Update(Customer c)

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              oo.BeginTranscation();

              try

              {

                   oo.UpdateObject(c);

                   oo.Commit();

              }

              catch(System.Exception e)

              {

                   oo.Rollback();

                   throw e;

              }

              oo.Dispose();                       

         }

         public EntityData SelectAll()

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              IObjectQuery oq=oo.NewQuery(typeof(Customer));

              EntityData customers=new EntityData();

              oq.Execute(customers);

              oo.Dispose();

              return customers;

         }

     }

AddressDB.cs

     using System;

     using WebApp1.Entities;

     using Grove;

     using Grove.DataObject;

 

     public class AddressDB

     {

         public AddressDB()

         {

         }

         public void Insert(Address a)

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              oo.BeginTranscation();

              try

              {

                   oo.InsertObject(a);

                   oo.Commit();

              }

              catch(System.Exception e)

              {

                   oo.Rollback();

                   throw e;

              }

              oo.Dispose();

         }

         public void Delete(Address a)

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              oo.BeginTranscation();

              try

              {

                   oo.RemoveObject(a);

                   oo.Commit();

              }

              catch(System.Exception e)

              {

                   oo.Rollback();

                   throw e;

              }

              oo.Dispose();         

         }

         public void Update(Address a)

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              oo.BeginTranscation();

              try

              {

                   oo.UpdateObject(a);

                   oo.Commit();

              }

              catch(System.Exception e)

              {

                   oo.Rollback();

                   throw e;

              }

              oo.Dispose();                       

         }

         public EntityData SelectAll()

         {

              IObjectOperator oo=ObjectOperatorFactory.GetObjectOperator();

              IObjectQuery oq=oo.NewQuery(typeof(Address));

              EntityData addresses=new EntityData();

              oq.Execute(addresses);

              oo.Dispose();

              return addresses;

         }

     }

代码2.数据库类




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