CL_ABAP_STRUCTDESCR - Runtime Type Services

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Functionality

This final class is used to describe and create structures. There is a single type object for each defined structure.

Relationships

CL_ABAP_TYPEDESCR
  |
  |--CL_ABAP_DATADESCR
  |    |
  |    |--CL_ABAP_ELEMDESCR
  |    |--CL_ABAP_REFDESCR
  |    |--CL_ABAP_COMPLEXDESCR
  |         |
  |         |--CL_ABAP_STRUCTDESCR
  |         |--CL_ABAP_TABLEDESCR
  |
  |--CL_ABAP_OBJECTDESCR
       |
       |--CL_ABAP_CLASSDESCR
       |--CL_ABAP_INTFDESCR

Example

REPORT typedescr_test.

TYPES:
  BEGIN OF my_struct,
    comp_a type i,
    comp_b type f,
  END OF my_struct.

DATA:
  my_data   TYPE my_struct,
  descr_ref TYPE ref to cl_abap_structdescr.

FIELD-SYMBOLS:
  <comp_wa> TYPE abap_compdescr.

START-OF-SELECTION.
  descr_ref ?= cl_abap_typedescr=>describe_by_data( my_data ).

  WRITE: / 'Typename     :', descr_ref->absolute_name.
  WRITE: / 'Kind         :', descr_ref->type_kind.
  WRITE: / 'Length       :', descr_ref->length.
  WRITE: / 'Decimals     :', descr_ref->decimals.
  WRITE: / 'Struct Kind  :', descr_ref->struct_kind.
  WRITE: / 'Components'.
  WRITE: / 'Name              Kind   Length   Decimals'.
  LOOP AT descr_ref->components ASSIGNING <comp_wa>.
    WRITE: / <comp_wa>-name, <comp_wa>-type_kind,
             <comp_wa>-length, <comp_wa>-decimals.
  ENDLOOP.

Notes

None

Further information

Classes:
  CL_ABAP_DATADESCR
  CL_ABAP_COMPLEXDESRC
  CL_ABAP_OBJECTDESCR
  CL_ABAP_TYPEDESCR
  CL_ABAP_REFDESCR
  CL_ABAP_ELEMDESCR
  CL_ABAP_TABLEDESCR
  CL_ABAP_CLASSDESCR
  CL_ABAP_INTFDESCR

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