使用py2neo的ogm模块,您可以在neo4j中为节点构建对象:
class Person(GraphObject):
__primarykey__ = 'name'
name = Property()
def __init__(self, name):
self.name = name
peter = Person('peter')
graph.create(peter)
是否可以向Person
对象添加动态属性?
peter = Person('peter')
# this does not work
peter.last_name = 'jackson'
graph.create(peter)
可以先创建一个节点,然后再添加属性,但是创建具有动态属性的GraphObjects
会更容易。
答案 0 :(得分:0)
针对此问题,我想出了一种蛮力的解决方案:
翻出您的对象的类,将新属性添加到该类中,然后将其塞回到您的对象中,然后才意识到发生了什么:D
from py2neo.ogm import GraphObject, Property
from py2neo import Graph
class Person(GraphObject):
__primarykey__ = "name"
name = Property()
def __init__(self, name):
self.name = name
def add_new_property(self, name, value):
self.__class__ = type(
type(self).__name__, (self.__class__,), {name: Property()}
)
setattr(self, name, value)
peter = Person("peter")
peter.add_new_property("lastname", "jackson")
g = Graph(host="localhost", user="neo4j", password="neo4j")
tx = g.begin()
tx.merge(peter)
tx.commit()
在此小型实验室设置中工作。但应在更复杂的环境中进行测试。
DZD的欢呼声:)
蒂姆