Re: [Zope-dev] Unpickleable Error
Brian Lloyd wrote:
>
> > Well since my product *does* use the SQL class, and the SQL class
> > uses the DA class, and the DA class uses cStringIO, I guess
> > *technically* I am using it. We create SQL methods then store them as
> > properties of the class. This may be what it's choking on.
>
> It shouldn't be - SQLMethods don't ever actually assign a StringIO
> to anything but transient variables. The Results object returned
> from a query could in some cases wrap a StringIO instance - you don't
> do anything in your product where Results objects would be stored
> as object attributes do you? If this were a problem common to all
> SQLMethod objects then I would expect people to be seeing this error
> all over the place. Is anyone else seeing this?
No, although we do have a class that we use to wrap around some of the
results that we sometimes return instead of the results themselves.
I'll try taking that out and see if that's the problem.
> If you're not storing Results anywhere, it would be helpful to see
> the str() of the 'state' being dumped in commit() - also to know
> what database adapter/version you are using...
Here are the contents of 'state':
{'testID': , '_objects': ({'meta_type':
'SQL Product
Catalog', 'id': 'testID'},)}
We're using ZMySQLDA v1.1.3.
--
Nick Garcia | [EMAIL PROTECTED]
CodeIt Computing | http://codeit.com
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RE: [Zope-dev] Unpickleable Error
> > The product isn't using cStringIO. I didn't even know it > existed until > > now ;) I stepped through the code, and in > lib/python/ZODB/Connection.py > > in the commit() function, when it gets to the line > dump(state) on line > > 347 where state is (apparently) all the correct information for my > > object, it gets the UnpickleableError. I noticed in the > Collector that > > bug #383 was about Unpickleable errors with SQL methods. The object > > that's trying to get pickled in this case contains SQL methods. > > Granted, bug 383 was from around this time last year, but > it's the best > > lead I've got so far. I don't use cStringIO anywhere in my product. > > Well since my product *does* use the SQL class, and the SQL class > uses the DA class, and the DA class uses cStringIO, I guess > *technically* I am using it. We create SQL methods then store them as > properties of the class. This may be what it's choking on. It shouldn't be - SQLMethods don't ever actually assign a StringIO to anything but transient variables. The Results object returned from a query could in some cases wrap a StringIO instance - you don't do anything in your product where Results objects would be stored as object attributes do you? If this were a problem common to all SQLMethod objects then I would expect people to be seeing this error all over the place. Is anyone else seeing this? If you're not storing Results anywhere, it would be helpful to see the str() of the 'state' being dumped in commit() - also to know what database adapter/version you are using... Brian Lloyd[EMAIL PROTECTED] Software Engineer 540.371.6909 Digital Creations http://www.digicool.com ___ 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 )
Re: [Zope-dev] Unpickleable Error
Nick Garcia wrote: > > Brian Lloyd wrote: > > > > > So, I'm getting this error when trying to use one of my Products under > > > Zope 2.2b1: > > > > > > Error Type: UnpickleableError > > > Error Value: Cannot pickle objects > > > > > > What exactly is a StringO object, and why can't it be > > > pickled/unpickled? It worked fine under 2.1, so I'm assuming > > > there have > > > been changes to the pickling routines that haven't been completely > > > cleaned up yet? > > > > There shouldn't be any changes at all happening to any of the pickling > > machinery... A 'StringO' object is what you get when you use > > cStringIO.StringIO. Is your product using cStringIO for anything? If > > not, it would be best to trace this in the debugger to see what is > > trying to pickle a StringO... > > The product isn't using cStringIO. I didn't even know it existed until > now ;) I stepped through the code, and in lib/python/ZODB/Connection.py > in the commit() function, when it gets to the line dump(state) on line > 347 where state is (apparently) all the correct information for my > object, it gets the UnpickleableError. I noticed in the Collector that > bug #383 was about Unpickleable errors with SQL methods. The object > that's trying to get pickled in this case contains SQL methods. > Granted, bug 383 was from around this time last year, but it's the best > lead I've got so far. I don't use cStringIO anywhere in my product. Well since my product *does* use the SQL class, and the SQL class uses the DA class, and the DA class uses cStringIO, I guess *technically* I am using it. We create SQL methods then store them as properties of the class. This may be what it's choking on. -- Nick Garcia | [EMAIL PROTECTED] CodeIt Computing | http://codeit.com ___ 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 )
Re: [Zope-dev] Unpickleable Error
Brian Lloyd wrote: > > > So, I'm getting this error when trying to use one of my Products under > > Zope 2.2b1: > > > > Error Type: UnpickleableError > > Error Value: Cannot pickle objects > > > > What exactly is a StringO object, and why can't it be > > pickled/unpickled? It worked fine under 2.1, so I'm assuming > > there have > > been changes to the pickling routines that haven't been completely > > cleaned up yet? > > There shouldn't be any changes at all happening to any of the pickling > machinery... A 'StringO' object is what you get when you use > cStringIO.StringIO. Is your product using cStringIO for anything? If > not, it would be best to trace this in the debugger to see what is > trying to pickle a StringO... The product isn't using cStringIO. I didn't even know it existed until now ;) I stepped through the code, and in lib/python/ZODB/Connection.py in the commit() function, when it gets to the line dump(state) on line 347 where state is (apparently) all the correct information for my object, it gets the UnpickleableError. I noticed in the Collector that bug #383 was about Unpickleable errors with SQL methods. The object that's trying to get pickled in this case contains SQL methods. Granted, bug 383 was from around this time last year, but it's the best lead I've got so far. I don't use cStringIO anywhere in my product. -- Nick Garcia | [EMAIL PROTECTED] CodeIt Computing | http://codeit.com ___ 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 )
RE: [Zope-dev] Unpickleable Error
> So, I'm getting this error when trying to use one of my Products under > Zope 2.2b1: > > Error Type: UnpickleableError > Error Value: Cannot pickle objects > > What exactly is a StringO object, and why can't it be > pickled/unpickled? It worked fine under 2.1, so I'm assuming > there have > been changes to the pickling routines that haven't been completely > cleaned up yet? There shouldn't be any changes at all happening to any of the pickling machinery... A 'StringO' object is what you get when you use cStringIO.StringIO. Is your product using cStringIO for anything? If not, it would be best to trace this in the debugger to see what is trying to pickle a StringO... Brian Lloyd[EMAIL PROTECTED] Software Engineer 540.371.6909 Digital Creations http://www.digicool.com ___ 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 )
[Zope-dev] Unpickleable Error
So, I'm getting this error when trying to use one of my Products under Zope 2.2b1: Error Type: UnpickleableError Error Value: Cannot pickle objects What exactly is a StringO object, and why can't it be pickled/unpickled? It worked fine under 2.1, so I'm assuming there have been changes to the pickling routines that haven't been completely cleaned up yet? -- Nick Garcia | [EMAIL PROTECTED] CodeIt Computing | http://codeit.com ___ 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 )
