Describing the Files class, page 55 of the PyTables 1.3.3 manual says:
trMap -- A dictionary that maps node names between PyTables and HDF5
domain names. Its initial values are set from the trMap parameter
passed to the openFile function. You can change its contents after
a file is opened and the new map will take effect over any new
object added to the tree.
I have the following test case which does not work for the second try:
import tables
def test(f):
print f.listNodes('/Xbsxffe_info/X0')
p = f.getNode('/Xbsxffe_info/X0/Xversion_id')
print p.read()
map = {'Xbsxffe_info': 'bsxffe_info', 'X0': '0', 'Xversion_id': 'version_id'}
fp1 =
tables.openFile('/data/tmp/hoel/GLPy_numpy_conversion/test/data/motor.bmh',
mode='r',
trMap=map)
test(fp1)
fp1.close()
fp2 =
tables.openFile('/data/tmp/hoel/GLPy_numpy_conversion/test/data/motor.bmh',
mode='r',
trMap={})
fp2.trMap = fp2.trMap.update(map)
test(fp2)
fp2.close()
I get:
...
Traceback (most recent call last):
File "tables_test2.py", line 15, in <module>
test(fp2)
File "tables_test2.py", line 3, in test
print f.listNodes('/Xbsxffe_info/X0')
File
"/usr/local/gltools/python/Python-2.5/linux/lib/python2.5/site-packages/tables/File.py",
line 1208, in listNodes
group = self.getNode(where) # Does the parent exist?
File
"/usr/local/gltools/python/Python-2.5/linux/lib/python2.5/site-packages/tables/File.py",
line 952, in getNode
node = self._getNode(nodePath)
File
"/usr/local/gltools/python/Python-2.5/linux/lib/python2.5/site-packages/tables/File.py",
line 898, in _getNode
node = parentNode._g_loadChild(childName)
File
"/usr/local/gltools/python/Python-2.5/linux/lib/python2.5/site-packages/tables/Group.py",
line 365, in _g_loadChild
self._g_checkHasChild(childName)
File
"/usr/local/gltools/python/Python-2.5/linux/lib/python2.5/site-packages/tables/Group.py",
line 353, in _g_checkHasChild
% (self._v_pathname, childName))
tables.exceptions.NoSuchNodeError: group ``/`` does not have a child named
``Xbsxffe_info``
Closing remaining opened files...
/data/tmp/hoel/GLPy_numpy_conversion/test/data/motor.bmh... done.
So, how do I successfully change the content of the trMap?
Kind regards
Berthold Höllmann
--
Germanischer Lloyd AG
CAE Development
Vorsetzen 35
20459 Hamburg
Phone: +49(0)40 36149-7374
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