RECEIVE
Short Reference
ABAP Syntax RECEIVE RESULTS FROM FUNCTION func
[KEEPING TASK]
parameter_list .
ABAP_ADDITION:
... KEEPING TASK
What does it do? This statement can be used in a callback routine
specified in an asynchronous RFC to
receive output parameters of an asynchronously called function
func
in the parameter list parameter_list
and to handle exceptions.
Latest notes: If a function module is started multiple times in a row
using asynchronous RFC, the execuction sequence is not fixed, instead it
depends in the system availability.
If the statement RECEIVE is used in a callback routine, the
current work process must be interrupted before the routine is executed,
so that the data can be received. If this has not already been done by
another action, such as by using the statement WAIT UNTIL , the
callback routine is executed after an implicit switch of the work
process. A database commit is
performed, except during the update .
ABAP_ADDITION ... KEEPING TASK
What does it do? The addition KEEPING TASK retains the
asynchronous RFC connection, and therefore also the
context of the called function module. When a
new call is made with the same task ID, the same global data of the
function group is addressed. A destination specified directly using
DESTINATION can be specified again, but does not have to be.
DESTINATION IN GROUP cannot be used to specify a group if a new call
is performed. Without the addition KEEPING TASK , an asynchronous
RFC connection is finished after the remote function is executed or the
results are copied.
Latest notes: The addition KEEPING TASK can be used only if the
context of the called function module is required for other function
calls.
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved