Hi Casey,
--On Mittwoch, August 14, 2002 23:38:52 -0400 Casey Duncan <[EMAIL PROTECTED]>
wrote:
> The Item class mixes in Traversable, which is probably responsible for
> making this work TTW. It also gives you a bunch of other stuff that many
> Zope classes need, like DAV support, copy support, ZMI tab support and
> security. It doen't mix-in acquisition tho.
>
> If you need support for acquistion machinery (including __of__ which
> creates wrappers), then you need to mix-in Acquisition.Implicit. The
> SimpleItem class mixes this and Persistence in for you (along with
> Item), so many Zope classes derive form SimpleItem. You need Persistence
> to store instances of your class in the ZODB, and implicit acquisition
> is the standard for Zope objects.
I actually don't know, if I need acquisition. The items are stored in the
btree of
the table, and I experienced no problems till now. I can copy and
export/import AixtraTable instances and the data is preserved.
>
> In short I would recommend mixing in SimpleItem or you may find that your
> objects are not stored properly in the ZODB.
Is that also true, if I store them in a btree ?
>
> -Casey
>
> BTW: People will take you a lot more seriously on this list if you loose
> the
># {{{ ... #}}} crutches ;^)
I use a folding editor (jed) and these are the folding marks. Folding makes
your
editing live much easier. ;-))
Mit freundlichen Grüßen Joachim Schmitz
--------------------------------------------------------------------
AixtraWare Ingenieurbüro für Internetanwendungen
Hüsgenstr. 33a, D-52457 Aldenhoven
Telefon: +49-2464-8851, FAX: +49-2464-905163
--------------------------------------------------------------------
Key fingerprint = DA10 CC82 62F8 1DBB 39A1 1EDC 725B 3317 A8D7 C3A6
Keyserver: http://www.keyserver.net/en/
_______________________________________________
Zope-Dev maillist - [EMAIL PROTECTED]
http://lists.zope.org/mailman/listinfo/zope-dev
** No cross posts or HTML encoding! **
(Related lists -
http://lists.zope.org/mailman/listinfo/zope-announce
http://lists.zope.org/mailman/listinfo/zope )
