GraphDatabase_action

 

https://neo4j.com/docs/

#https://pypi.python.org/pypi/neo4j-driver/1.5.3
from neo4j.v1 import GraphDatabase

driver = GraphDatabase.driver("bolt://localhost:7687", auth=("my@my.com","mypwd"))

def add_friends(tx, name, friend_name):
    tx.run("MERGE (a:Person {name: $name}) "
           "MERGE (a)-[:KNOWS]->(friend:Person {name: $friend_name})",
           name=name, friend_name=friend_name)

def print_friends(tx, name):
    for record in tx.run("MATCH (a:Person)-[:KNOWS]->(friend) WHERE a.name = $name "
                         "RETURN friend.name ORDER BY friend.name", name=name):
        print(record["friend.name"])

with driver.session() as session:
    session.write_transaction(add_friends, "Arthur", "Guinevere")
    session.write_transaction(add_friends, "Arthur", "Lancelot")
    session.write_transaction(add_friends, "Arthur", "Merlin")
    session.write_transaction(add_friends, "Arthur", "MyinputF")
    session.read_transaction(print_friends, "Arthur")

Server version	Neo4j/3.3.1
Server address	127.0.0.1:7687
Query	MATCH (a:Person)-[:KNOWS]->(friend) WHERE a.name ="Arthur" RETURN friend.name ORDER BY friend.name
Response	[ { "keys": [ "friend.name" ], "length": 1, "_fields": [ "Guinevere" ], "_fieldLookup": { "friend.name": 0 } }, { "keys": [ "friend.name" ], "length": 1, "_fields": [ "Lancelot" ], "_fieldLookup": { "friend.name": 0 } }, { "keys": [ "friend.name" ], "length": 1, "_fields": [ "Merlin" ], "_fieldLookup": { "friend.name": 0 } }, { "keys": [ "friend.name" ], "length": 1, "_fields": [ "Myinput" ], "_fieldLookup": { "friend.name": 0 } }, { "keys": [ "friend.name" ], "length": 1, "_fields": [ "MyinputF" ], "_fieldLookup": { "friend.name": 0 } } ]

Started streaming 5 records after 1 ms and completed after 1 ms.

 

 

 

 

删除

MATCH (n) DETACH DELETE n

 

Deleted 5687 nodes, deleted 4885 relationships, completed after 453 ms.