topic Re: RFC_GET_FUNCTION_INTERFACE_P in Application Development and Automation Discussions

RFC_GET_FUNCTION_INTERFACE_P

Former Member — Fri, 02 Sep 2005 19:48:09 GMT

Is the following statement true or false?:

"For every RFC function that you can call,

you can also access its signature

(using RFC_GET_FUNCTION_INTERFACE_P)"

Re: RFC_GET_FUNCTION_INTERFACE_P

RichHeilman — Fri, 02 Sep 2005 20:11:05 GMT

Sure......why? You got an argument against that statement?



report zrich_0002 .


data: signature type table of rfc_fint_p with header line.


parameters: p_func type tfdir-funcname.


call function 'RFC_GET_FUNCTION_INTERFACE_P'
  exporting
    funcname            = p_func
*   LANGUAGE            = SY-LANGU
  tables
    params_p            = signature
* EXCEPTIONS
*   FU_NOT_FOUND        = 1
*   NAMETAB_FAULT       = 2
*   OTHERS              = 3
          .
if sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
endif.


loop at signature.

  write:/ signature-paramclass,
  signature-parameter,
  signature-tabname,
  signature-fieldname,
  signature-exid,
  signature-position,
  signature-offset,
  signature-intlength,
  signature-decimals,
  signature-default,
  signature-paramtext,
  signature-optional.


endloop.

Regards,

Rich Heilman

Re: RFC_GET_FUNCTION_INTERFACE_P

Former Member — Fri, 02 Sep 2005 21:52:35 GMT

I'm not SAP insider. So, I'm not aware of possible pitfalls, sorry. Typical C-Java guy think that in С you can not ask function signatures in run-time, in Java, you can.

1. How is this implemented in SAP?

2. If my external RFC server registers function using RfcInstallFunction(), how RFC_GET_FUNCTION_INTERFACE_P would know its signature?

3. Calling RFC_GET_FUNCTION_INTERFACE_P for itself in QEC (non Unicode) expose extra parameter <b>NONE_UNICODE_LENGTH</b> in my RFC application (Unicode) but do not expose it in my SAPGUI (non Unicode?). Where can I read about this?

4. What about Unicode and RFC_GET_STRUCTURE_DEFINITION_P?

Sorry for too many questions - expect many bonus points!

Re: RFC_GET_FUNCTION_INTERFACE_P

RichHeilman — Fri, 02 Sep 2005 22:22:09 GMT

I don't know how to answer your questions. RFC_GET_FUNCTION_INTERFACE_P just gives you the import/export/tables parameters of the function module that specified thru its own IMPORT parameter. It returns a list of the parameters.

See the above ABAP code.

Regards,

Rich Heilman