def removeItem(self, item):
try:
self.items.remove(item)
except KeyError:
raise ValueError(item.flatten(), [x.flatten() for x in self.items])
if not self.items:
self.empty = True
for c in self.children:
if isinstance(c, JoinNode):
dequeRemove(c.alphaNode.successors, c)
def rightActivate(self, triple_holder):
if self.alphaNode.empty:
self.relinkBeta()
if self.parent.empty:
dequeRemove(self.alphaNode.successors, self)
triple = triple_holder.triple
env = triple_holder.env
for token in self.parent.items:
newBinding = self.test(token, env)
if newBinding is not None:
## if token in self.falseMatches:
## falseTriple = self.falseMatches[token]
## del self.falseMatches[token]
## if False and self.retractTriple is not None:
## self.retractTriple(falseTriple)
for c in self.children:
c.leftActivate(token, triple, newBinding)
def rightActivate(self, triple_holder):
if self.reachedGoal():
# We reached a goal, so this rule should be turned off.
# print "ALREADY REACHED A GOAL!"
return
if self.alphaNode.empty:
self.relinkBeta()
if self.parent.empty:
dequeRemove(self.alphaNode.successors, self)
triple = triple_holder.triple
env = triple_holder.env
for token in self.parent.items:
newBinding = self.test(token, env)
if newBinding is not None:
## if token in self.falseMatches:
## falseTriple = self.falseMatches[token]
## del self.falseMatches[token]
## if False and self.retractTriple is not None:
## self.retractTriple(falseTriple)
for c in self.children:
c.leftActivate(token, triple, newBinding)