def _from_struct(self, graphref, bin_str):
"""Reconstructs a Node object from a struct of binary data
Parameters
----------
graphref: a reference to a vgraph Graph object
bin_str: a string of binary data
Returns
-------
A vgraph Node object"""
node_tuple = structs.unpack_node(bin_str)
n = Node(graphref)
n.id = node_tuple[0]
n.label = re.sub(r'\x00', '', node_tuple[1])
n._set_first_edge_offset(node_tuple[2])
n._set_last_edge_offset(node_tuple[3])
return n
def _from_struct(self, graphref, bin_str):
"""Reconstructs a Node object from a struct of binary data
Parameters
----------
graphref: a reference to a vgraph Graph object
bin_str: a string of binary data
Returns
-------
A vgraph Node object"""
node_tuple = structs.unpack_node(bin_str)
n = Node(graphref)
n.id = node_tuple[0]
n.label = re.sub(r'\x00', '', node_tuple[1])
n._set_first_edge_offset(node_tuple[2])
n._set_last_edge_offset(node_tuple[3])
return n
def get_last_edge_offset(self):
"""Returns the offset into the database file where this
nodes *last* edge can be found.
IMPORTANT: You should always read the offset using this getter
rather than using the objects __dict__ or going around the name
mangling. The value is updated on each read in case the node's
underlying data has been changed since object instantiation.
Parameters
----------
None
Returns
-------
Integer"""
st = structs.unpack_node(self.__graph._node_map.read(self.id))
self.__last_edge = st[3]
return self.__last_edge
def get_last_edge_offset(self):
"""Returns the offset into the database file where this
nodes *last* edge can be found.
IMPORTANT: You should always read the offset using this getter
rather than using the objects __dict__ or going around the name
mangling. The value is updated on each read in case the node's
underlying data has been changed since object instantiation.
Parameters
----------
None
Returns
-------
Integer"""
st = structs.unpack_node(self.__graph._node_map.read(self.id))
self.__last_edge = st[3]
return self.__last_edge