Doubt in Inheritance !

[Former Member]

Hi Experts,

i have doubt in inheritances .

why multiple inheritance is not possible in OOAbap ?

wat is the Reason ?

can any one Clarify my doubt ?

Cheers,

Rajesh .!

[Former Member]

Multiple inheritance is not permitted in ABAP Objects, because the language designers considered that it would cause ambiguity and complexity they didn't want.

Use interfaces instead. See my recent post about interfaces for ideas.

matt

[matt]

Multiple inheritance is not permitted in ABAP Objects, because the language designers considered that it would cause ambiguity and complexity they didn't want.

Use interfaces instead. See my recent post about interfaces for ideas.

matt

[former_member576008]

Problems:

mostly used as ’mixin’ = interface

polymorphism on all axes (substitutability is hard)

name conflicts (in distributed development!)

multiple base classes? (diamond inheritance)

combinatorial explosion for multiple classification

• must be resolved by role pattern or the like

• would be static, not dynamic

=> multiple inheritance doesn’t do it!