def __setitem__(self, key, value):
"""__setitem__ must be defined in the SoftLink class in order for array
indexing syntax to work"""
if not self._v_isopen:
raise tables.ClosedNodeError('the node object is closed')
elif self.is_dangling():
raise ValueError("softlink target does not exist")
else:
self.dereference().__setitem__(key, value)
def __setattr__(self, attrname, value):
# set attribute of the SoftLink itself
if (attrname in SoftLink._link_attrnames
or attrname[:3] in SoftLink._link_attrprefixes):
object.__setattr__(self, attrname, value)
# set attribute of the target node
elif not self._v_isopen:
raise tables.ClosedNodeError('the node object is closed')
elif self.is_dangling():
raise ValueError("softlink target does not exist")
else:
self.dereference().__setattr__(attrname, value)
def __getattribute__(self, attrname):
# get attribute of the SoftLink itself
if (attrname in SoftLink._link_attrnames
or attrname[:3] in SoftLink._link_attrprefixes):
return object.__getattribute__(self, attrname)
# get attribute of the target node
elif not self._v_isopen:
raise tables.ClosedNodeError('the node object is closed')
elif self.is_dangling():
return None
else:
target_node = self.dereference()
try:
# __getattribute__() fails to get children of Groups
return target_node.__getattribute__(attrname)
except AttributeError:
# some node classes (e.g. Array) don't implement __getattr__()
return target_node.__getattr__(attrname)
