Hi colleagues,
I try to develop an ABAP RAP action with result cardinality [1..*]. I can define this inside the behavior definition without any error. For instance:
action ( features : instance ) SortOrderUp result [1..*] $self;
also the definition of the method inside the behavior definition ABAP class can be done w/o any error or waring. But if you try to run the OData Service you got an error message like this:
... for operation SortOrderUp not supported.
I debugged a little bit and found the reason in method CL_SADL_GW_ACTION_EXPOSURE~_CHECK_RETURN_ENTITY. There is a prevention that the result of a post http OData request can have multiple entities.
* POST function imports cannot return multiple entity instances
My intention is to implement an action where I can change the Sort Order of the whole table. I try to shift up one entity up and afterwards I have to change the SortOrder value for others. For instance:
Before Reordering:
1 Item A
2 Item B [button: SortOrderUp]
3 Item C
When I now press the button "SortOrderUp" in line 2 the result should be afterwards:
1 Item B
2 Item A
3 Item C.
I have to switch the SortOrder value for Item B and Item A with the action. And therefore I need a result with a cardinality of [1..*]. Or is there a other way for provided for such use-cases?
Thx for you support
Andreas
