-----Original Message----- From: Martijn Faassen [mailto:faassen@vet.uu.nl] Sent: Thursday, July 22, 1999 10:40 AM To: zope-dev@zope.org Subject: Re: [Zope-dev] ZClass inheriting from Python Class

Michel Pelletier wrote:

...

From: Miller, John M. [mailto:jmiller1@uop.com]

...

think you need to do something like get_transaction().commit() when you want to commit changes you've made. Though it may be that Zope takes care

You don't really ever need to do this if you treat all attributes immutibly.

So if I use a list attribute in my class to which I append I do need to, right?

Not necesarily, you can do this: list = self.list list.append(blah) ... self.list = list The final assignment will be caught by the persistence machinery and your appends will be saved with it. If you look at the Catalog code, you'll see I did this all over the place and n'er once used commit(). -Michel

Regards,

Martijn

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