topic Re: Constructor-OOP in Application Development and Automation Discussions

Constructor-OOP

former_member260552 — Tue, 10 Mar 2015 10:00:53 GMT

Newbie question....

In both super class and subclass i am using constructor.The problem is arising when i am creating objects.The main constructor is being initialized twice,once there when super class object creating and another due to mandatory addition of "super->constructor" in subclass constructor method.How can i make sure that the super class constructor does not initialize twice.

Re: Constructor-OOP

SharathYaralkattimath — Tue, 10 Mar 2015 10:20:01 GMT

Make your superclass constructor as protected, now only your subclass can call the super class constructor & you cannot create object of superclass.

Re: Constructor-OOP

former_member260552 — Tue, 10 Mar 2015 10:34:26 GMT

Hi Sharath

Tried but Constructor can't be declared in protected section.It is not possible.

This is a point in ABAP WORKBENCH TAW12 Part 1 book.

A constructor must be defined in the public area.

Re: Constructor-OOP

Former Member — Tue, 10 Mar 2015 10:46:37 GMT

Put condition on '' super->constructor '' in subclass constructor if you dont want to call it twice.

check if the super class object already created or set a flag if constructor already called.

Hope i solved your problem.

Re: Constructor-OOP

SharathYaralkattimath — Tue, 10 Mar 2015 10:52:19 GMT

Till Release 7.0 EhP2, CONSTRUCTOR can only be declared as Public. From this release onwards, we can define the CONSTRUCTOR visibility also while defining the class.