A simple Elixir driver using the Neo4j graph database REST API. Compatible with the following Neo4j servers: 2.x/3.0.x/3.1.x
Documentation: hexdocs.pm/neo4j_sips/
You can also look at: Bolt.Sips - Elixir driver using the Bolt protocol; Neo4j's newest network protocol, designed for high-performance.
Available in Hex. Edit the mix.ex file and add the neo4j_sips dependency to the deps/1 function:
def deps do
[{:neo4j_sips, "~> 0.2"}]
end
or from Github:
def deps do
[{:neo4j_sips, github: "florinpatrascu/neo4j_sips"}]
end
If you're using a local development copy:
def deps do
[{:neo4j_sips, path: "../neo4j_sips"}]
end
Then add the neo4j_sips dependency the applications list:
def application do
[applications: [:logger, :neo4j_sips],
mod: {Neo4j.Sips.Application, []}]
end
Edit the config/config.exs and describe a Neo4j server endpoint, example:
config :neo4j_sips, Neo4j,
url: "http://localhost:7474",
pool_size: 5,
max_overflow: 2,
timeout: 15_000 # milliseconds!
Run mix do deps.get, deps.compile
If your server requires basic authentication, add this to your config file:
basic_auth: [username: "foo", password: "bar"]
Or:
token_auth: "bmVvNGo6dGVzdA==" # if using an authentication token?!
You can also specify the authentication in the url config:
url: "http://neo4j:neo4j@localhost:7474"
With a minimalist setup configured as above, and a Neo4j server running, we can connect to the server and run some queries using Elixir’s interactive shell (IEx):
$ cd <my_mix_project>
$ iex -S mix
Erlang/OTP 19 [erts-8.0.2] [source] [64-bit] ...
Interactive Elixir (1.3.2) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> alias Neo4j.Sips, as: Neo4j
iex(2)> Neo4j.start_link(url: "http://localhost:7474")
{:ok, #PID<0.204.0>}
iex(3)> cypher = """
CREATE (n:Neo4jSips {title:'Elixir sipping from Neo4j', released:2015,
license:'MIT', neo4j_sips_test: true})
"""
iex(4)> Neo4j.query(Neo4j.conn, cypher)
{:ok, []}
iex(5)> n = Neo4j.query!(Neo4j.conn, "match (n:Neo4jSips {title:'Elixir sipping from Neo4j'}) where n.neo4j_sips_test return n")
[%{"n" => %{"license" => "MIT", "neo4j_sips_test" => true, "released" => 2015,
"title" => "Elixir sipping from Neo4j"}}]
For more examples, see the test suites.
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Test (
mix test) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
As reported by Github: contributions to master, excluding merge commits
Florin T.PATRASCU (@florinpatrascu, @florin on Twitter)
- Neo4j.Sips - MIT, check LICENSE file for more information.
- Neo4j - Dual free software/commercial license, see http://neo4j.org/
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