def createRelationship(self, start_node: Node, relation_type: str, end_node: Node, relation_properties=None):
"""创建关系，如果有关系上属性的话就一起创建
:param start_node: 起始结点
:param relation_type: 关系类型
:param end_node: 结束结点
:param relation_properties: 属性字典，如果有传入的话，则在关系上添加多个形如"属性名：属性值"的键值对
:return: 创建好的关系对象
"""
new_relation = Relationship(start_node, relation_type, end_node)
new_relation.update(relation_properties)
self.my_graph.create(new_relation)
return new_relation
_str = 'qxy:msgRecord:' + sid + ':' + c + '*'
_dates = rds.keys(_str)
for key in _dates:
_msgs = rds.zrange(key, 0, -1)
for msg in _msgs:
#c_s_msgs.append(msg)
_json_msg = json.loads(msg)
if 'extras' in _json_msg.keys():
_json_msg['extras'] = json.dumps(_json_msg['extras'])
if 'item' in _json_msg.keys():
_json_msg['item'] = json.dumps(_json_msg['item'])
_from = _json_msg['from']
if _from == sid:
_chat_relation = Relationship(
_snode, "CHAT_" + str(_json_msg['createTime']), _cnode)
_chat_relation.update(_json_msg)
graph.create(_chat_relation)
else:
_chat_relation = Relationship(
_cnode, "CHAT_" + str(_json_msg['createTime']), _snode)
_chat_relation.update(_json_msg)
graph.create(_chat_relation)
graph.delete_all()
'''
s = Node('Servicer')
c = Node('Customer', pid = '17830746958')
graph.create(s)
graph.create(c)
b = Node('Person', name='Bob', age=22, location='上海')
c = Node('Person', name='Mike', age=21, location='北京')
a.setdefault('time', '---2018---')
a['time1'] = '---2018_1---'
print(a)
r1 = Relationship(a, 'KNOWS', b)
r2 = Relationship(b, 'KNOWS', c)
r2.setdefault("time", "198708")
r1['time'] = '2018'
graph.create(a)
graph.create(r1)
graph.create(r2)
r1.update()
# graph.delete(a)
print("------------> r2 ------------>")
print(r2)
selector = NodeSelector(graph)
print("------------> selector.select( age=21)")
persons = selector.select(age=21)
print(list(persons))
print("------------> selector.select('Person', age=21)")
persons = selector.select('Person', age=21)
print(list(persons))
