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Class-Based Exceptions in ABAP Release 7.0, EhP2 ITOC
ABAP_MODIFICATION_NN Resumable Exceptions
Before ABAP_RELEASE 7.0, EhP2, the context in which a class-based exception was raised was always emptied completely. All procedures called between the raising of the exception and any handler, and their local data, were deleted before the handler was executed. The program could only resume after the TRY control structure of the handler. From ABAP_RELEASE 7.0, EhP2, class-based exceptions can be raised and propagated as resumable exceptions. The new addition RESUMABLE can be used in
the statement RAISE EXCEPTION
the RAISING addition for declaring exceptions in $[CLASS-$]METHODS, FUNCTION, and FORM. The new statement RESUME is used to resume the execution of a program after the exception-raising statement, while the resumable exception is being handled.
ABAP_MODIFICATION_NN Preserving the Context of an Exception
The context of the exception must be retained while it is being handled so that the program can resume afterwards. To enable this, the new addition BEFORE UNWIND of the statement CATCH has been implemented. This addition can also be used independently of resumable exceptions.
ABAP_MODIFICATION_NN Retrying the TRY Block
The new statement RETRY enables an exception-raising TRY block to be retried.
