python - cypher 中灯泡 neo4j 的嵌入和删除

Question

我通过灯泡使用 Neo4j 的 REST API，并尝试通过 cypher 删除节点以及所有关联的边，如下所示:

from bulbs.neo4jserver import Graph as Neo4jGraph
db = Graph()

query = '''START d=node(57)
           MATCH d-[r]-()
           DELETE d,r
        '''
t = db.cypher.execute(query)

(其中db是neo4j-database-Handler)。

...但事情似乎并非如此。下面是一个很长的错误报告:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/neo4jserver/cypher.py", line 31, in execute
    return self.client.cypher(query, params)
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/neo4jserver/client.py", line 403, in cypher
    resp = self.request.post(path, params)
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/rest.py", line 126, in post
    return self.request(POST, path, params)
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/rest.py", line 181, in request
    return self.response_class(http_resp, self.config)
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/neo4jserver/client.py", line 217, in __init__
    self.handle_response(response)
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/neo4jserver/client.py", line 249, in handle_response
    response_handler(response)
  File "/home/tobias/Esk/Dev/liquidDemocracyLight/venv/local/lib/python2.7/site-packages/bulbs/rest.py", line 36, in bad_request
    raise ValueError(http_resp)
ValueError: ({'status': '400', 'content-length': '3989', 'content-encoding': 'UTF-8', 'server': 'Jetty(6.1.25)', 'access-control-allow-origin': '*', 'content-type': 'application/json'}, '{\n  "message" : "expected return clause\\n\\"           DELETE d,r\\"\\n            ^",\n  "exception" : "org.neo4j.server.rest.repr.BadInputException: expected return clause\\n\\"           DELETE d,r\\"\\n 

我做错了什么吗？难道不能通过灯泡通过密码查询删除节点吗？

Answer 1

您似乎正在运行旧版本的 Neo4j？ DELETE 仅在 1.8 中添加。