Generate random GUID

Question

I want to generate a random UUID like in Java with UUID.randomUUID().

I came up with the function GUID_GENERATE and used it like this

    DO 5 TIMES.
       CALL FUNCTION 'GUID_CREATE'
        IMPORTING
         ev_guid_16 = ev_guid_16
         ev_guid_22 = ev_guid_22
         ev_guid_32 = ev_guid_32.

       WRITE: /, ev_guid_16, ev_guid_22, ev_guid_32.
    ENDDO.

The result of this program is always the same GUID. I need a new random one at every request.

I want to use it as a primary key in database table. This key will be transmitted via a Web Service to a Java application and user there as identifier, too.

Do you have any ideas how I can generate random UUID/GUID in ABAP?

score 10 · Answer 1 · answered Oct 25 '11 at 12:25

First of all you are using a function module that is obsolete. The comment at the beginning of the source code states that.

*"----------------------------------------------------------------------
* NOW this function has been replaced, see note 935047      "BINK215094
* 28.6.2006 The function module has been switched to the new UUID methods
*           which exist in the class cl_system_uuid
*           - due to compatibility reasons we catch the exceptions
*           - sy-subrc not touched manually
*             (sy-subrc was set in case of an error when calling the former
*             'RFCControl' kernel-call, but it wasn't evaluated and finally
*             overwritten when leaving this function)
*"----------------------------------------------------------------------

Please use class CL_SYSTEM_UUID and the following methods:

IF_SYSTEM_UUID_STATIC~CREATE_UUID_X16
IF_SYSTEM_UUID_STATIC~CREATE_UUID_C22
IF_SYSTEM_UUID_STATIC~CREATE_UUID_C26
IF_SYSTEM_UUID_STATIC~CREATE_UUID_C32

Thanks for the hint. I will try them and report if they work. If so I guess you earned the green arrow :-) — , Nov 04 '11 at 14:24

score 9 · Accepted Answer · answered Oct 25 '11 at 11:53

9

Are you absolutely sure the created GUID is always the same? Because this shouldn't be happening. Note that the difference between them can be just one character when you generate them inside a fast loop.

answered Oct 25 '11 at 11:53

René

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It was one single character... Stupid! Thank you for that hint! – Oct 25 '11 at 13:17

Generate random GUID

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