[Zope3-dev] Object Status Info

[Stephan Richter]

At 10:37 PM 4/9/2002 -0400, Guido van Rossum wrote:
> > for FTP support I need to know some information about objects.
>
>I think it would be handy to have such info available in the ZMI too.

I agree.

> > I need:
> >
> > - the access mode a la Unix (can be probably found after security is done)
>
>I think some other access mode abstraction could probably be easily
>translated.  Really all you need is whether the user who's logged in
>(or "nobody") can read/write the object; ftp doesn't really care for
>anything else.

Yep, I just thought it would be nice to try to map everything.

> > - Owner and owner group of the object (I assume that will also come from
> > the security mechanism somehow)
>
>If these are the proper concepts in the Zope security philosophy --
>I've lost track of the discussion on groups.  Note that ftp really
>doesn't require Unix-style output -- that's just the most common form.
>
> > - Size of object (right now it checks whether a method getSize exists)
>
>Calculated how?

IFiles stores the size of their content. So it is not the size of the 
actual object, but the content it contains, which is what we need for FTP.

> > - Access, Modification and Creation time. I think that information should
> > be stored in the container of the object.
>
>Would be nice to have indeed.  (Though Unix ctime isn't really
>creation time -- it's time of last change to metadata.)  I think ZODB
>stores the mtime.

That would be cool. I hoped for that! :-)

>   The atime may be hard to come by without causing inefficiencies.

Agreed. I would drop that one too.

> > I thought about extending the folder to at least store the dates; maybe
> > even the owner and the size should be stored here as well.
> >
> > What do you think?
>
>Conceptually it's better to keep this on the object, in case it gets
>moved, right?

Probably. I think MomentoBags might be the answer (as RDM pointed out), but 
since I do not know how they work, I am not feeling to0 comfortable with 
them. I should look into that.

Regards,
Stephan

--
Stephan Richter
CBU - Physics and Chemistry Student
Web2k - Web Design/Development & Technical Project Management