Am Mittwoch, den 07.03.2007, 20:50 +0100 schrieb Dieter Maurer: > Christian Theune wrote at 2007-3-7 17:37 +0100: > >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. > > Is it possible at all? > > Uploaded files end up in a temporary file. > > They need to get moved away from this temporary location > (as they are likely to be deleted at various administrator decided dates).
This is how the dance looks like to do the link():
>>> import tempfile, os
>>> d = tempfile.NamedTemporaryFile()
>>> os.path.exists(d.name)
True
>>> d.write('Test')
>>> os.path.exists('/tmp/asdf')
False
>>> os.link(d.name, '/tmp/asdf')
>>> d.close()
>>> os.path.exists(d.name)
False
>>> os.path.exists('/tmp/asdf')
True
>>> open('/tmp/asdf').read()
'Test'
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