Booleans

ABAP doesn't ship a real boolean type — you'll see abap_bool, ' '/'X', 0/1, 'true'/'false', and so on. The boolean helpers normalize these into one consistent answer.

boolean_check_by_data

Inspect any value and return abap_true if it represents a "truthy" value ('X', 'true', non-zero numbers, …).

IF zabaputil_cl_util=>boolean_check_by_data( lv_input ) = abap_true.
  " ...
ENDIF.

boolean_check_by_name

Same idea, but the input is the name of a global ABAP constant. The constant is looked up via RTTI.

IF zabaputil_cl_util=>boolean_check_by_name( 'ABAP_TRUE' ) = abap_true.
  " ...
ENDIF.

boolean_abap_2_json

Translate an ABAP boolean-ish value into a JSON literal:

DATA(lv_a) = zabaputil_cl_util=>boolean_abap_2_json( abap_true ).  " => 'true'
DATA(lv_b) = zabaputil_cl_util=>boolean_abap_2_json( ' ' ).        " => 'false'