Re: All entries belong to the top object class?

[Dieter Klünter <dieter@dkluenter.de>]

Am Sun, 26 Apr 2015 21:05:44 +0530
schrieb dE <de.techno@gmail.com>:

> On 04/26/15 17:13, Michael Ströder wrote:
> > dE wrote:
> >> Super this is the superclass chain --
> >>
> >> A->B
> >>
> >> A is defined by MUST ObjectClass MAY ( cn abc xyz cxy )
> >> B is defined by MUST ObjectClass MAY ( cn cxy )
> >>
> >> Then an entry belonging to B (explicit) and A (implicit, 
> >> automatically added)
> >> cannot have attributes abc and xyz.
> >
> > No!
> >
> > B would have MAY ( cn abc xyz cxy ).
> >
> > Example for A:
> >
> > objectclass ( <some-oid-for-A>
> >   NAME 'A'
> >   MAY ( cn $ abc $ xyz $ cxy ) )
> >
> > These three variants have the same MAY attribute set ( cn $ abc $
> > xyz $ cxy ):
> >
> > objectclass ( <some-oid-for-B>
> >   NAME 'B'
> >   SUP A
> >   MAY ( cn $ cxy ) )
> >
> > objectclass ( <some-oid-for-B>
> >   NAME 'B'
> >   SUP A
> >   MAY ( cn $ abc $ xyz $ cxy ) )
> >
> > objectclass ( <some-oid-for-B>
> >   NAME 'B'
> >   SUP A )
> >
> > Ciao, Michael.
> >
> >
> 
> Ok.
> 
> So the significance of subordinate classes is to add a MUST
> attributes only. The possible attributes that any object can have is
> defined in the TOP object class; regardless of what object class the
> entry belongs to, any attribute listed in the TOP object class can be
> added to it.

NO! The abstract objectClass 'top' only provides the attribute
'objectClass'. From schema_prep.c

( 2.5.6.0 NAME 'top' "
                        "DESC 'top of the superclass chain' "
                        "ABSTRACT MUST objectClass )",

-Dieter

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Dieter Klünter | Systemberatung
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