def _g_create_common(self, expectedrows):
"""Create a new array in file (common part)."""
self._v_version = obversion
if self._v_chunkshape is None:
# Compute the optimal chunk size
self._v_chunkshape = self._calc_chunkshape(
expectedrows, self.rowsize, self.atom.size)
# Compute the optimal nrowsinbuf
self.nrowsinbuf = self._calc_nrowsinbuf()
# Correct the byteorder if needed
if self.byteorder is None:
self.byteorder = correct_byteorder(self.atom.type, sys.byteorder)
try:
# ``self._v_objectid`` needs to be set because would be
# needed for setting attributes in some descendants later
# on
self._v_objectid = self._create_carray(self._v_new_title)
except: # XXX
# Problems creating the Array on disk. Close node and re-raise.
self.close(flush=0)
raise
return self._v_objectid
def _g_create_common(self, expectedrows):
"""Create a new array in file (common part)."""
self._v_version = obversion
if self._v_chunkshape is None:
# Compute the optimal chunk size
self._v_chunkshape = self._calc_chunkshape(expectedrows,
self.rowsize,
self.atom.size)
# Compute the optimal nrowsinbuf
self.nrowsinbuf = self._calc_nrowsinbuf()
# Correct the byteorder if needed
if self.byteorder is None:
self.byteorder = correct_byteorder(self.atom.type, sys.byteorder)
try:
# ``self._v_objectid`` needs to be set because would be
# needed for setting attributes in some descendants later
# on
self._v_objectid = self._create_carray(self._v_new_title)
except: # XXX
# Problems creating the Array on disk. Close node and re-raise.
self.close(flush=0)
raise
return self._v_objectid
def _g_create(self):
"""Create a variable length array (ragged array)."""
atom = self.atom
self._v_version = obversion
# Check for zero dims in atom shape (not allowed in VLArrays)
zerodims = numpy.sum(numpy.array(atom.shape) == 0)
if zerodims > 0:
raise ValueError, \
"""When creating VLArrays, none of the dimensions of the Atom instance can
be zero."""
if not hasattr(atom, 'size'): # it is a pseudo-atom
self._atomicdtype = atom.base.dtype
self._atomicsize = atom.base.size
self._basesize = atom.base.itemsize
else:
self._atomicdtype = atom.dtype
self._atomicsize = atom.size
self._basesize = atom.itemsize
self._atomictype = atom.type
self._atomicshape = atom.shape
# Compute the optimal chunkshape, if needed
if self._v_chunkshape is None:
self._v_chunkshape = self._calc_chunkshape(
self._v_expectedsizeinMB)
self.nrows = SizeType(0) # No rows at creation time
# Correct the byteorder if needed
if self.byteorder is None:
self.byteorder = correct_byteorder(atom.type, sys.byteorder)
# After creating the vlarray, ``self._v_objectID`` needs to be
# set because it is needed for setting attributes afterwards.
self._v_objectID = self._createArray(self._v_new_title)
# Add an attribute in case we have a pseudo-atom so that we
# can retrieve the proper class after a re-opening operation.
if not hasattr(atom, 'size'): # it is a pseudo-atom
self.attrs.PSEUDOATOM = atom.kind
return self._v_objectID
def _g_create(self):
"""Create a variable length array (ragged array)."""
atom = self.atom
self._v_version = obversion
# Check for zero dims in atom shape (not allowed in VLArrays)
zerodims = numpy.sum(numpy.array(atom.shape) == 0)
if zerodims > 0:
raise ValueError, \
"""When creating VLArrays, none of the dimensions of the Atom instance can
be zero."""
if not hasattr(atom, 'size'): # it is a pseudo-atom
self._atomicdtype = atom.base.dtype
self._atomicsize = atom.base.size
self._basesize = atom.base.itemsize
else:
self._atomicdtype = atom.dtype
self._atomicsize = atom.size
self._basesize = atom.itemsize
self._atomictype = atom.type
self._atomicshape = atom.shape
# Compute the optimal chunkshape, if needed
if self._v_chunkshape is None:
self._v_chunkshape = self._calc_chunkshape(
self._v_expectedsizeinMB)
self.nrows = SizeType(0) # No rows at creation time
# Correct the byteorder if needed
if self.byteorder is None:
self.byteorder = correct_byteorder(atom.type, sys.byteorder)
# After creating the vlarray, ``self._v_objectID`` needs to be
# set because it is needed for setting attributes afterwards.
self._v_objectID = self._createArray(self._v_new_title)
# Add an attribute in case we have a pseudo-atom so that we
# can retrieve the proper class after a re-opening operation.
if not hasattr(atom, 'size'): # it is a pseudo-atom
self.attrs.PSEUDOATOM = atom.kind
return self._v_objectID