[Zope3-dev] Proposal for optimized Blob handling

[Sidnei da Silva]

On 3/7/07, Christian Theune <ct at gocept.com> wrote:
> 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'


Ok, this is how it looks on Windows. :)

>>> import os
>>> import win32file
>>> f = open('test.txt', 'wb')
>>> f.write('hello world')
>>> f.close()
>>> win32file.CreateHardLink('hello.txt', 'test.txt')
>>> os.listdir(os.getcwd())
['hello.txt', 'test.txt']
>>> f = open('hello.txt', 'wb')
>>> f.write('hello there')
>>> f.close()
>>> print open('hello.txt').read()
hello there
>>> print open('test.txt').read()
hello there
>>> os.remove('test.txt')
>>> print open('hello.txt').read()
hello there
>>> print open('test.txt').read()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
IOError: [Errno 2] No such file or directory: 'test.txt'

-- 
Sidnei da Silva
Enfold Systems                http://enfoldsystems.com
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