CODEWITHSUNDEEP
neo4jcypher
Nick Dingwall
Nick Dingwall

Reputation: 43

How can I get a schema through the bolt protocol (perhaps with a cypher command)?

In the Neo4j browser, I can write :SCHEMA to get the list of indexes in a db. Using http, you can do something like curl http://localhost:7474/db/data/schema/index/, which I can pythonize with 

import requests
r = requests.get('http://localhost:7474/db/data/schema/index/')
r.json()

Can I do something equivalent through the bolt protocol? requests can't handle it (InvalidSchema: No connection adapters were found for 'bolt://...'), and since :SCHEMA isn't valid cypher, neither session.run(':SCHEMA') nor session.run('SCHEMA') work.

I can't use http because I won't have access to the http port in my application (although requests via http seem to be broken anyway).

Upvotes: 3

Views: 310

Answers (1)

Tore Eschliman
Tore Eschliman

Reputation: 2507

You can use session.run('CALL db.constraints()') and session.run('CALL db.indexes()') to get the two components of the schema. You (I believe, if there's a better way someone please correct me) will have to parse the strings inside the result cells if you want to track them programatically.

Upvotes: 2

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