Re: [Pytables-users] Can't rename node with child node

[Michka P. <mic...@gm...>]

After some (loooong) code browsing I sent a pull request for my problem : https://github.com/PyTables/PyTables/pull/208

Thanks, I was not sure if it was a bug or an intended functionality preventing me to rename nodes with children.

Michka

Le 10 févr. 2013 à 09:08, Anthony Scopatz a écrit :

> Hey Michka, 
> 
> This seems like a bug.  Please open an issue on github or submit a pull request if you figure out a fix.  Thanks!
> 
> Be Well
> Anthony
> 
> 
> On Sat, Feb 9, 2013 at 4:44 AM, Michka Popoff <mic...@gm...> wrote:
> Hello
> 
> I am not able to rename a node which has parent nodes. The doc doesn't specify any restriction to the usage of the renameNode method.
> Here is a small example script to show what I want to achieve :
> 
> import tables
> 
> # Create file and groups
> file = tables.openFile("test.hdf5", "w")
> file.createGroup("/", "data", "Data")
> file.createGroup("/data", "id", "Single Data")
> file.createGroup("/data/id/", "curves1", "Curve 1")
> file.createGroup("/data/id/", "curves2", "Curve 2")
> 
> # Rename (works)
> file.renameNode("/data/id/curves1", "newcurve1")
> 
> # Rename (doesn't work)
> file.renameNode("/data/id", "newid")
> 
> The first rename will work and rename "/data/id/curves1" to "/data/id/newcurve1"
> The second rename will fail with the following traceback :
> 
> Traceback (most recent call last):
>   File "Rename.py", line 14, in <module>
>     file.renameNode("/data/id", "newid")
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/file.py", line 1157, in renameNode
>     obj._f_rename(newname, overwrite)
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/node.py", line 590, in _f_rename
>     self._f_move(newname=newname, overwrite=overwrite)
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/node.py", line 674, in _f_move
>     self._g_move(newparent, newname)
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/group.py", line 565, in _g_move
>     self._v_file._updateNodeLocations(oldPath, newPath)
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/file.py", line 2368, in _updateNodeLocations
>     descendentNode._g_updateLocation(newNodePPath)
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/node.py", line 414, in _g_updateLocation
>     file_._refNode(self, newPath)
>   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tables/file.py", line 2287, in _refNode
>     "file already has a node with path ``%s``" % nodePath
> AssertionError: file already has a node with path ``/data``
> Closing remaining open files: test.hdf5... done
> Exception AttributeError: "'File' object has no attribute '_aliveNodes'" in  ignored
> 
> Perhaps I can not do what I want to do here, or is there another method I should use ?
> 
> Thanks in advance
> 
> Michka Popoff
> 
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