[Oracle]ASP.NET中使用ODP.NET(ODAC)對含有自定義類型參數的存儲過程進行操作

先在schema下建立自定義類型(packages下的類型無效)

1.先建立一個object type

CREATE   OR   REPLACE  TYPE PLANTINFO_TYPE  AS  OBJECT
(
  PLANT     VARCHAR2 ( 6 ),
  SUBPLANT  VARCHAR2 ( 6 )
)

 

2.再建立一個collections type

 

CREATE   OR   REPLACE  TYPE PLANTINFO_TAB_TYPE  AS   TABLE   OF  PLANTINFO_TYPE;

 

 

3.建立一個procedure,其參數引用以上的type

 

代码

CREATE   OR   REPLACE  PACKAGE MYPACK_TEST  AS
   PROCEDURE  TEST2(PARAM1  IN  MF_SAVEINFO_TAB_TYPE, PARAM2 OUT SYS_REFCURSOR);
END  MYPACK_TEST;

CREATE   OR   REPLACE  PACKAGE BODY MYPACK_TEST  AS
   PROCEDURE  TEST2(PARAM1  IN  MF_SAVEINFO_TAB_TYPE, PARAM2 OUT SYS_REFCURSOR)  IS
   BEGIN
     OPEN  PARAM2  FOR
       SELECT  PLANT, SUBPLANT  FROM   TABLE (PARAM1);
   END  TEST2;
END  MYPACK_TEST;

 

 

如果想要在ASP.NET中調用以上procedure,直接用microsoft的oracleclient是沒有辦法實現的,必須引用Oracle公司出品的

ODP.NET,它是ODAC套件中的一個組件,請去Oracle官方網站下載.

 

假設你的環境已經建立好,那麼我們看如何用odp.net來調用這個存儲過程

1.先寫好一個class for oracle customer types

 

代码

  [OracleCustomTypeMappingAttribute( " PLANTINFO_TYPE " )]
     public   class  PlantInfoFactory : IOracleCustomTypeFactory
    {
         #region  IOracleCustomTypeFactory Members

         public  IOracleCustomType CreateObject()
        {
             return   new  PlantInfo();
        }

         #endregion
    }

    [OracleCustomTypeMappingAttribute( " PLANTINFO_TAB_TYPE " )]
     public   class  PlantInfo_TabFactory : IOracleArrayTypeFactory
    {
         #region  IOracleArrayTypeFactory Members

         public  Array CreateArray( int  numElems)
        {
             return   new  PlantInfo[numElems];
        }

         public  Array CreateStatusArray( int  numElems)
        {
             return   null ;
        }

         #endregion
    }

     public   class  PlantInfo : IOracleCustomType
    {
         private   bool  p_mIsNull;

        [OracleObjectMappingAttribute( " PLANT " )]
         public  String PLANT {  get ;  set ; }

        [OracleObjectMappingAttribute( " SUBPLANT " )]
         public  String SUBPLANT {  get ;  set ; }

        
         public   static  PlantInfo Null
        {
             get
            {
                PlantInfo info  =   new  PlantInfo();
                info.p_mIsNull  =   true ; ;
                 return  info;
            }
        }


         #region  INullable Members

         public   bool  IsNull
        {
             get  {  return  p_mIsNull; }
        }

         #endregion

         #region  IOracleCustomType Members

         public   void  FromCustomObject(OracleConnection con, IntPtr pUdt)
        {
             if  (PLANT  !=   null )
                OracleUdt.SetValue(con, pUdt,  " PLANT " , PLANT);
             else
                 throw   new  NullReferenceException( " SaveInfo.PLANT is null " );

             if  (SUBPLANT  !=   null )
                OracleUdt.SetValue(con, pUdt,  " SUBPLANT " , SUBPLANT);
             else
                 throw   new  NullReferenceException( " SaveInfo.SUBPLANT is null " );           

        }

         public   void  ToCustomObject(OracleConnection con, IntPtr pUdt)
        {
            PLANT  =  (String)OracleUdt.GetValue(con, pUdt,  " PLANT " );
            SUBPLANT  =  (String)OracleUdt.GetValue(con, pUdt,  " SUBPLANT " );
                    }

         #endregion

    }

 

2.寫方法直接調用procedure.如下:

 

代码

            string  ConStr  =  @ " Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=MyOracleServer)));User Id=root;Password=root; " ;
            PlantInfo[] records  =   new  PlantInfo[ 1 ];
            PlantInfo record  =   new  PlantInfo();
            record.PLANT  =   " W000 " ;
            record.SUBPLANT  =   "MP " ;
            records[ 0 ]  =  record;

             // DataOP.Instance.ExecuteCommand("MYPACK_TEST.TEST2", new object[] { records, null });
             using  (OracleConnection oc  =   new  OracleConnection(ConStr))
            {
                OracleCommand cmd  =  oc.CreateCommand();
                cmd.CommandText  =   " MYPACK_TEST.TEST2 " ;
                cmd.CommandType  =  CommandType.StoredProcedure;

                OracleParameter p1  =   new  OracleParameter();
                p1.OracleDbType  =  OracleDbType.Array;
                p1.Direction  =  ParameterDirection.Input;
                p1.UdtTypeName  =   " PLANTINFO_TAB_TYPE " ;
                p1.Value  =  records;
                cmd.Parameters.Add(p1);

                OracleParameter p2  =   new  OracleParameter();
                p2.OracleDbType  =  OracleDbType.RefCursor;
                p2.Direction  =  ParameterDirection.Output;
                cmd.Parameters.Add(p2);

                oc.Open();
                 try
                {
                    OracleDataReader reader  =  cmd.ExecuteReader();
                     // cmd.ExecuteNonQuery();
                    DataTable dt  =   new  DataTable();
                    dt.Load(reader);
                }
                 catch  (Exception ex)
                {
                     throw  ex;
                }
                 finally
                {
                    oc.Close();
                }
            }

 

3.上面的DataTable dt 就是調用procedure返回的結果.

至此,ASP.NET調用這种特殊的存儲過程的寫法就完成了.這种傳值的方法的好處是將值打包成一個對象傳遞給存儲過程,然後在存儲過程中再做存值等其它操作.