Check a convertion from CHAR TO NUMC

Question

Hi,
I import a flatfile into a structure that contains only CHAR-fields. Then I make a TRY-CATCH construct for every field in P,I,F,N..-datatypes to check if the data is correct.
P,I,F raise a CONVERT-Exception that i can handle.
A move to N-field raise no exception but put a wrong values to the N-field.
Example:
Charfield contains ' 1  1 0000', N-field is '110000'.
A compare in the program like
IF C-Field <> N-Field raise a exception that can't be catched by TRY-Catch.
How can i check if the field is correct?
Anybody understand me and have an idea?
Regards,
Stefan

Answer 1

Hi Christian and Rich,
thank you for your fast reply.
I've written one TRY method that has a import-parameter with TYPE ANY and a import-parameter for the target field.
The target field can be everything like P,I,F,N,C,D.
The method checks if the value can be converted into the target field and avoid a shortdump, when the flatfile contains bad data.
So I have to get the type by
cl_abap_typedescr=>describe_by_data
and then make your suggested Conatins-only-check if it is a
cl_abap_typedescr=>typekind_num
Thanks,
Stefan