37 lines
1.5 KiB
Python
37 lines
1.5 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Copyright 2021 Memgraph Ltd.
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#
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# Use of this software is governed by the Business Source License
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# included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
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# License, and you may not use this file except in compliance with the Business Source License.
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#
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# As of the Change Date specified in that file, in accordance with
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# the Business Source License, use of this software will be governed
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# by the Apache License, Version 2.0, included in the file
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# licenses/APL.txt.
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from neo4j import GraphDatabase, basic_auth
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from neo4j.exceptions import ClientError, TransientError
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with GraphDatabase.driver("bolt://localhost:7687", auth=None, encrypted=False) as driver:
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# Setup the graph.
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with driver.session() as session:
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session.run("MATCH (n) DETACH DELETE n").consume()
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session.run(
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"CREATE (:Node{id:1})-[:IS_CONNECTED]->(:Node{id:2})-[:IS_CONNECTED]->(:Node{id:3})-[:IS_CONNECTED]->(:Node{id:4})"
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).consume()
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# Return a path of length 2
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with driver.session() as session:
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res = session.run("MATCH p = (:Node)-[:IS_CONNECTED*..2]->(:Node) RETURN p").values()
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assert len(res) == 5, "Didn't find all the paths"
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# Return a path of length 3
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with driver.session() as session:
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res = session.run("MATCH p = (:Node)-[:IS_CONNECTED*3]->(:Node) RETURN p").values()
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assert len(res) == 1, "Didn't find the path"
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print("All ok!")
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