CLASS {{p}}drug_master DEFINITION PUBLIC FINAL CREATE PUBLIC.
  PUBLIC SECTION.
    TYPES ty_drug_id TYPE c LENGTH 10.

    TYPES:
      BEGIN OF ty_drug,
        drug_id        TYPE ty_drug_id,
        max_daily_dose TYPE i,
      END OF ty_drug,
      tt_drug TYPE STANDARD TABLE OF ty_drug WITH EMPTY KEY.

    METHODS get_drug
      IMPORTING iv_drug_id     TYPE ty_drug_id
      RETURNING VALUE(rs_drug) TYPE ty_drug.

  PRIVATE SECTION.
    METHODS get_all_drugs
      RETURNING VALUE(rt_drug) TYPE tt_drug.
ENDCLASS.


CLASS {{p}}drug_master IMPLEMENTATION.
  METHOD get_drug.
    DATA(lt_drug) = get_all_drugs( ).
    READ TABLE lt_drug INTO rs_drug WITH KEY drug_id = iv_drug_id.
    IF sy-subrc <> 0.
      CLEAR rs_drug.
    ENDIF.
  ENDMETHOD.

  METHOD get_all_drugs.
    rt_drug = VALUE #( ( drug_id = 'PARA500' max_daily_dose = 4000 )
                       ( drug_id = 'IBU400'  max_daily_dose = 1200 )
                       ( drug_id = 'AMOX500' max_daily_dose = 1500 )
                       ( drug_id = 'META50'  max_daily_dose = 200 )
                       ( drug_id = 'SALB100' max_daily_dose = 800 ) ).
  ENDMETHOD.
ENDCLASS.