Coding the Routine Body

The actual work of the C UDR is done with C-language statements in the routine body. You can use the following statements and calls in the routine body:

• C-language statements
• Calls to functions in libraries that the DataBlade API supports

  For a description of these function libraries, see Regular Public Functions.

• Calls to other C functions

  You can call any of the following kinds of C functions:

  • Any other C UDR that is linked into the same shared-object file

    For more information, see Calling UDRs Within a DataBlade API Module.

  • A C UDR that does not reside in the same shared-object file

    For more information, see Calling UDRs with the Fastpath Interface.

You cannot directly call any other functions within a C UDR.