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Constructor cannot call virtual-like methods of a class



 
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Joined: 01 Sep 2007
Posts: 1640
PostPosted: Sat Sep 15, 2007 7:58 pm    Post subject: Constructor cannot call virtual-like methods of a class Reply with quote
If a method is called from constructor, then always will be called the current class method, not overridden method in virtual-like style.

Code:
REPORT ZVV0002.
*----------------------------------------------------------------------*
class c_base definition.
  public section.
    methods:    constructor,
                m_ad,
                m_introduce.
endclass.
*----------------------------------------------------------------------*
class c_derived definition inheriting from c_base.
  public section.
    methods:    constructor,
                m_ad redefinition.
endclass.
*----------------------------------------------------------------------*
class c_base implementation.
  method constructor.
    call method m_ad.
  endmethod.
  method m_ad.
    write / 'I am BASE...'.
  endmethod.
  method m_introduce.
    call method m_ad.
  endmethod.
endclass.
*----------------------------------------------------------------------*
class c_derived implementation.
  method constructor.
    call method: super->constructor.
  endmethod.
  method m_ad.
    write / 'I am DERIVED'.
  endmethod.
endclass.
*----------------------------------------------------------------------*
data o_1 type ref to c_base.
*----------------------------------------------------------------------*
END-OF-SELECTION.
*----------------------------------------------------------------------*
write / '      BASE OBJECT:'.
create object o_1 type c_base.
call method o_1->m_introduce.
write / '      DERIVED OBJECT:'.
create object o_1 type c_derived.
call method o_1->m_introduce.
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