Using CL_ABAP_TYPEDESCR for local itabs?

Question

Can I get the component table of a locally defined internal table using cl_abap runtime class/methods?

Answer 1

Of course...
This is from class documentation available for class CL_ABAP_TABLEDESCR
REPORT typedescr_test.
TYPES:
  my_table TYPE HASHED TABLE OF i WITH UNIQUE KEY TABLE LINE.
DATA:
  descr_ref TYPE ref to cl_abap_tabledescr.
FIELD-SYMBOLS:
  <key_comp_wa> TYPE abap_keydescr.
START-OF-SELECTION.
  descr_ref ?= cl_abap_typedescr=>describe_by_name( 'MY_TABLE' ).
  WRITE: / 'Typename      :', descr_ref->absolute_name.
  WRITE: / 'Kind          :', descr_ref->type_kind.
  WRITE: / 'Length        :', descr_ref->length.
  WRITE: / 'Decimals      :', descr_ref->decimals.
  WRITE: / 'Table Kind    :', descr_ref->table_kind.
  WRITE: / 'Initial Size  :', descr_ref->initial_size.
  WRITE: / 'Key Def Kind  :', descr_ref->key_defkind.
  WRITE: / 'Has Unique Key:', descr_ref->has_unique_key.
  WRITE: / 'Key Components:'.
  LOOP AT descr_ref->key ASSIGNING <key_comp_wa>.
    WRITE <key_comp_wa>-name.
  ENDLOOP.
Regards,
Abhijit