Adding code for the AddInts() function to the code generated by BladeSmith

About this task

BladeSmith generates two source code files for the AddInts DataBlade® module, which you can see in Visual C++ under the Source Files node in the File view:
  • udr.c. For user-defined routines. You must add code to implement the functions in this file.
  • support.c. For tracing and BladeSmith utility functions. Do not edit this file.
BladeSmith generates the following functions for the AddInts DataBlade® module, which you can see under the Globals node in the Class view:
  • AddInts(). This is the only function that you modify. It is in the udr.c file.
  • Gen_nstrwords(). A BladeSmith utility function not used in the generated code for the AddInts() function. It is in the support.c file.
  • Gen_Trace(). A BladeSmith utility function to process trace messages and errors. It is in the support.c file.

To implement the AddInts() function:

Procedure

  1. In Visual C++, double-click the AddInts() function under the Globals node in the Class view and find the following code:
    /*  
** TO DO: Remove this comment and call to  
**        mi_db_error_raise after implementing  
**        this function.  
*/  
mi_db_error_raise( Gen_Con, MI_EXCEPTION,   
     "Function AddIntegers has not been implemented." );
  2. Remove the comment and replace the mi_db_error_raise() statement with the following code to add the two integers: 
    Gen_RetVal = Int1 + Int2;
  3. Remove the following comment, the call to the mi_fp_setreturnisnull() function, and the statement that sets Gen_RetVal to 0:
    /*  
** TO DO: Compute and store your value into Gen_RetVal.  
** The call to mi_fp_setreturnisnull informs the  
** server that the return value is NULL.  
*/  
mi_fp_setreturnisnull( Gen_fparam, 0, MI_TRUE );  
Gen_RetVal = 0;
  4. Check your source code against the final version of udr.c.
  5. Save your changes to udr.c.