Services for Object (GOS) Attachement List not showing after attachment

Question

Hi All,
I have created a new entry for the Generic Object Service List and this links to a copy of the CL_GOS_SRV_ATTACHMENT_CREATE class (Create attachment) with some additional logic. However, after attaching a file, the "Attachment List" does not become available until after I re-enter the transaction. The attachment list is showing the correct attachments.
After some (understatement...) investigation, I found that even if I try and link the new service to a unchanged copy of the CL_GOS_SRV_ATTACHMENT_CREATE service in SGOSATTR, it is not working. It is attaching fine, but the "Attachment List" entry in the Services for Object Menu is still greyed out. If I attach the original class CL_GOS_SRV_ATTACHMENT_CREATE to the newly created entry it works fine. e.g. straight after I attach a file to the transaction, the menu entry becomes available.
I can't find where the re-draw of the GOS menu happens and hence can not determine what is going wrong. Does anybody know if this is part of the Kernel or is this actually done in ABAP ?
Am I missing something ? Debugging including system debugging for two days now and can't find it... very frustrating.
Any help would be appreciated.
Thanks,
Wouter.

Answer 1

Hi Wouter,
I had originally posted to ask if you had resolved this since I was facing the same issue, but then deleted my post when I was able to get it working. Sorry, I didn't mean to initiate a flurry of activity in such an old thread.
My scenario is I created a new GOS service entry in table SGOSATTR using transaction SGOSM. My new service uploads attachments to an external document management system via a call to a RESTful web service. The class I use in the SGOSM entry is a custom subclass of CL_GOS_SRV_URL_CREATE.
I resolved this issue by taking a look at what CL_GOS_SRV_URL_CREATE does in its EXECUTE method. The key bits to refresh the GOS Attachment List with the new attachment are...
raise event commit_required. " if SGOSM has the commit flag checked
raise event service_succeeded
       exporting eo_service = me.
These events tell any subscribers to go do their thing-- which in this case includes a refresh of the GOS Attachment List. So in the EXECUTE method of my custom subclass, after I call function BINARY_RELATION_CREATE, I raise these events...
CALL FUNCTION 'BINARY_RELATION_CREATE'
   EXPORTING
       obj_rolea     = gs_object
       obj_roleb    = rel_doc
       relationtype = 'URL'
   EXCEPTIONS
       OTHERS       = 1.
CASE sy-subrc.
   WHEN 0.
       MESSAGE s043(sgos_msg). " The attachment was successfully created
       RAISE EVENT commit_required.
       RAISE EVENT service_succeeded
             EXPORTING eo_service = me.
   WHEN OTHERS.
       MESSAGE s042(sgos_msg). " The attachment has not been created
ENDCASE.
I hope this is helpful to you even though your initial implementation was a while back. Thanks for replying to my question though!!
Cheers,
Amy