def _shareNode_JoinNode(self, lastCircuitNode, alphaMemory, tests):
# check if i can share looking at beta network first
if lastCircuitNode is not None:
for child in lastCircuitNode.children:
# i can't use isinstance, child must be exactly a JoinNode
# otherwise negative node could be shared and this is a problem
if (child.__class__ == JoinNode
# is a join node
and child.rightParent == alphaMemory
# alpha memory is the same
and child.tests == tests):
# tests are the same too
# i can share the node
self.eventsManager.fire(EventsManager.E_NODE_SHARED, child)
return child
else:
# try to share node looking at the alphaMemory
# this could allow to share dummy join nodes
for child in alphaMemory.children:
# i can't use isinstance, child must be exactly a JoinNode
# otherwise negative node could be shared and this is a problem
if (child.__class__ == JoinNode
# is a join node
and child.isLeftRoot()
# like the node i will create, this one is left dummy
and child.tests == tests):
# tests are the same too
# i can share the node
self.eventsManager.fire(EventsManager.E_NODE_SHARED, child)
return child
# i can't share an old node
# it's time to create a new one
newChild = JoinNode(rightParent=alphaMemory,
leftParent=lastCircuitNode,
tests=tests)
# link the new join to the right alpha memory
alphaMemory.prependChild(newChild)
if lastCircuitNode is not None:
# link the join node to the parent
lastCircuitNode.prependChild(newChild)
# it's useless to update a leaf join node
# even if it find matches
# it has no children to propage the activation
#myclips.logger.info("New node: %s", newChild)
#myclips.logger.info("Right-linked node: %s to %s", newChild, alphaMemory)
#myclips.logger.info("Left-linked node: %s to %s", newChild, lastCircuitNode)
self.eventsManager.fire(EventsManager.E_NODE_ADDED, newChild)
self.eventsManager.fire(EventsManager.E_NODE_LINKED, lastCircuitNode,
newChild, -1)
self.eventsManager.fire(EventsManager.E_NODE_LINKED, alphaMemory,
newChild, 1)
return newChild
