[Zope3-dev] Proposal for optimized Blob handling

[Christian Theune]

Am Mittwoch, den 07.03.2007, 21:03 +0100 schrieb Bernd Dorn:
> On 07.03.2007, at 17:37, Christian Theune wrote:
> 
> > Hi,
> >
> > I'm writing up a proposal for the ZODB to make even more efficient  
> > Blob
> > handling possible.
> >
> > This includes not copying the data from an uploaded file, but using a
> > `link` operation when possible.
> >
> > However, the Zope 3 publisher currently uses the default  
> > implementation
> > of the cgi module's FieldStorage.
> >
> > I propose to create a small subclass to override the `make_file`  
> > method
> > to use `NamedTemporaryFile` instead of `TemporaryFile` to allow the  
> > file
> > being accessible from a filename so I can apply a `link` operation.
> >
> > Notice: The FieldStorage explicitly provides the `make_file` method to
> > allow overriding in this sense.
> >
> > Does anybody feel like this would be a bad idea?
> 
> that would be nice, i would prefer to make the whoe FieldStorage  
> class pluggable via a factory interface
> 
> this is a long outstanding issue for z3c.extfile too, i also wanted  
> to access the file directly

I've started a little different dicussion on the FieldStorage
implementation on the Zope 2 list as FieldStorage has some more
problems.

Christian

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