#!/usr/bin/env python

# -*- encoding: utf-8 -*-

# Copyright (c) 2002-2015 "Neo Technology,"

# Network Engine for Objects in Lund AB [http://neotechnology.com]

#

# This file is part of Neo4j.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

from neo4j.v1.session import GraphDatabase

driver = GraphDatabase.driver("bolt://localhost")

session = driver.session()

session.run("MERGE (a:Person {name:'Alice'})")

friends = ["Bob", "Carol", "Dave", "Eve", "Frank"]

with session.begin_transaction() as tx:

for friend in friends:

tx.run("MATCH (a:Person {name:'Alice'}) "

"MERGE (a)-[:KNOWS]->(x:Person {name:{n}})", {"n": friend})

tx.success = True

for friend, in session.run("MATCH (a:Person {name:'Alice'})-[:KNOWS]->(x) RETURN x"):

print('Alice says, "hello, %s"' % friend["name"])

session.close()