cursor.hpp

来自「联通接收发送新程序」· HPP 代码 · 共 71 行

/* Copyright(C) 1999, 2000 by JiangSu Bell Software CO.,LTD. */
/*
  Name: cursor.hpp                     Version: 1.0.0
  Created by HanBing                   Date: 2000-08-08
  Comment: Our group defining all base-class sets
  Modified:
2)  2000-08-28	HanBing	-	Modifed the class Cursor be array_size;
1)  2000-08-08	HanBing	-	Create;
*/

#ifndef __CURSOR__
#define __CURSOR__

class Cursor
{
  public:
     /*  constructor  */
     Cursor()
     {
       state = closed;
     };
     /*  destructor  */
     ~Cursor()
     {
       if ( state == opened )
         Close();
     }

    State Open( XW_Connection *conn );
    State Close();

    /*  Justice if the Cursor is opened  */
    bool IsOpen()
    {
      return ( state == opened ? true : false );
    }

    /*  bind an input variable  */
    int BindCol( CField* Field );
    /*  define an output variable  */
    int DefineCol( int position, CField* Field );
    /*  describe the output variable  */
    int Describe( int position, CField* &Field );

    bool Parse( const char *stmt );
    inline long Execute( uint size = 1 )
    {
      n_cur_size = size;
      return ReportMsg( oexn( &cda, size, 0 ) );
    };

    inline long Fetch( uint size = 1 )
    {
      return ReportMsg( ofen( &cda, size ) );
    };

    long ReportMsg( int value );
    inline void ReportError()
    {
      connect->ReportError( cda.v2_rc );
    }
  private:
    Cda_Def cda;
    XW_Connection *connect;
    State state;
    uint  n_cur_size;
};

#endif //__CURSOR__