exception.h

一个不错的fastdb使用例子

//-< EXCEPTION.H >---------------------------------------------------*--------*
// FastDB                    Version 1.0         (c) 1999  GARRET    *     ?  *
// (Main Memory Database Management System)                          *   /\|  *
//                                                                   *  /  \  *
//                          Created:     3-Oct-99 Sebastiano Suraci  * / [] \ *
//                          Last update: 5-Oct-99 K.A. Knizhnik      * GARRET *
//-------------------------------------------------------------------*--------*
// Database exception
//-------------------------------------------------------------------*--------*

#ifndef __EXCEPTION_H__
#define __EXCEPTION_H__

class FASTDB_DLL_ENTRY dbException
{

protected:
  int   err_code;
  char* msg;
  int   arg;

public:
  dbException(int p_err_code, char const* p_msg = NULL, int p_arg = 0)
      : err_code (p_err_code),
      msg (NULL),
      arg (p_arg)
  {
    if (p_msg != NULL)
    {
      msg = new char[strlen(p_msg)+1];
      strcpy(msg, p_msg);
    }
  }

  dbException(dbException const& ex)
  {
    err_code = ex.err_code;
    arg = ex.arg;

    if (ex.msg != NULL)
    {
      msg = new char[strlen(ex.msg)+1];
      strcpy(msg, ex.msg);
    }
    else
    {
      msg = NULL;
    }
  }

  ~dbException()
  {
    delete[] msg;
  }

  int   getErrCode() const
  {
    return err_code;
  }

  char* getMsg() const
  {
    return msg;
  }

  long  getArg() const
  {
    return arg;
  }
};

#endif