def __init__(self, name):
"""
Construktor for the Utility Node
Keyword arguments:
name -- The name of this node
"""
super(UtilityNode, self).__init__(name)
self.ut = UtilityTable()
class UtilityNode(Node):
"""Handles an UtilityNode"""
def __init__(self, name):
"""
Construktor for the Utility Node
Keyword arguments:
name -- The name of this node
"""
super(UtilityNode, self).__init__(name)
self.ut = UtilityTable()
def announce_parent(self, node):
"""
Gets called automatically when this node gets a new parent
Keyword arguments:
node -- the parent node of this utility node
"""
self.ut.add_variable(node)
def set_utility_table(self, table, nodes):
"""
Sets the utility table
keyword arguments:
table -- the utility table
nodes -- a list of nodes which are the parents of this utility node
"""
self.ut.set_utility_table(table, nodes)
def set_utility(self, value, assignment):
"""
Sets one utility in the utility table of this node
keyword arguments:
value -- the utlity value
assignment -- a list of assignments of node value pairs
"""
self.ut.set_utility(value, assignment)
def get_utility_table(self):
"""
Getter for the utility table
"""
return self.ut
def get_utility(self, node_value_pairs):
"""
Getter for the utility stored in the utility table
keyword arguments:
node_value_pairs -- list of node,value pairs
"""
return self.ut.get_utility(node_value_pairs)
def __str__(self):
return self.name + "\n" + str(self.ut)
