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From: SeskaPeel (seskapeel_at_[hidden])
Date: 2006-04-26 11:10:08

Hi list,


I'm looking for a "multi-class container", with access to sub-containers of
elements depending on their class. All elements are derived from the same
base class, and I want to have "views" of containers of final classes, or
even intermediate classes. This container would be associative, like a map.

As instance if I have


// Base class

class A {} ;


// Intermediate classes

class B : public A {} ;


// Final classes

class C : public B {} ;

class D : public B {} ;

class E : public A {} ;


I want a container that can hold any A-derived class, on which I could have
views of sub containers of class C, D or E, and even a sub container of
intermediate class B.


I looked at multi-index, but no such feature seems to be feasible. And I
have no need of multiple indices, as I access all theses elements by their
ID which is a member of A.


Any hint on how I could implement this?





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