本文整理汇总了Python中py2neo.Node.match_incoming方法的典型用法代码示例。如果您正苦于以下问题：Python Node.match_incoming方法的具体用法？Python Node.match_incoming怎么用？Python Node.match_incoming使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类py2neo.Node的用法示例。
在下文中一共展示了Node.match_incoming方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: node
# 需要导入模块: from py2neo import Node [as 别名]
# 或者: from py2neo.Node import match_incoming [as 别名]
class User:
"""
Creates a User
User has attributes Name, Version and Last Login
When user is creates, a database node is created in Neo4j
When user is infected, the node is remove and replaced by new node (version update)
"""
# Initializer
def __init__(self):
# Give user a full name. Generated randomly
self.name = unicodedata.normalize('NFKD', names.get_full_name()).encode('ascii','ignore')
# Current base version of the website
self.khanAcademyVersion = 'A'
# keep all students in a set
self.students = set()
# keep all coaches in a set
self.coaches = set()
# Number of loggins, int days ago
self.lastLogin = random.randint(0,50)
######################DATABASE#######################
# Save this user as a node in the graph database
self.databaseNode = Node("UserA", name = self.name, khanAcademyVersion = self.khanAcademyVersion, LastLogin = self.lastLogin)
graph.create(self.databaseNode)
def isCoaching(self, student):
if (student != self and (student not in self.students or self not in student.coaches)):
self.students |= {student}
student.coaches |= {self}
######################DATABASE#######################
graph.create(Relationship(self.databaseNode, "IS_COACHING", student.databaseNode))
def isStudent(self, coach):
if (coach != self and (self not in coach.students or coach not in self.coaches)):
coach.students |= {self}
self.coaches |= {coach}
######################DATABASE#######################
graph.create(Relationship(coach.databaseNode, "IS_COACHING", self.databaseNode))
#Class method for user infection
def infect(self):
# Deploys new version of Khan Academy to this user
self.khanAcademyVersion = 'B'
######################DATABASE#######################
# save all relationships, ingoing and outgoing of this node
incomingRel = self.databaseNode.match_incoming(rel_type="IS_COACHING")
outgoingRel = self.databaseNode.match_outgoing(rel_type="IS_COACHING")
# create a node that is of typer UserN
self.databaseNode = Node("UserB", name = self.name, khanAcademyVersion = self.khanAcademyVersion, LastLogin = self.lastLogin)
graph.create(self.databaseNode)
# Build the same relationships as the UserA node
for r in incomingRel:
startNode = r.start_node
graph.create(Relationship(startNode, "IS_COACHING", self.databaseNode))
for r in outgoingRel:
endNode = r.end_node
graph.create(Relationship(self.databaseNode, "IS_COACHING", endNode))
# Delete the old node
cypher.execute("MATCH (u :UserA {khanAcademyVersion: {khanAcademyVersion}, name: {name}})-[r]-() DELETE r", khanAcademyVersion = 'A', name = self.name)
cypher.execute("MATCH n WHERE (n.khanAcademyVersion = {khanAcademyVersion} AND n.name = {name}) DELETE n", khanAcademyVersion = 'A', name = self.name)