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Version: 2.9.0

Rust quick start

At the end of this guide, you will have created a Rust program that connects to the Memgraph database and executes simple queries.

Prerequisites

To follow this guide, you will need:

Basic setup

Let's jump in and connect a simple program to connect to Memgraph.

1. Create a new Rust project with the name memgraph_rust by running the following command:

cargo new memgraph_rust --bin

2. Add the following line to the Cargo.toml file under the line [dependencies] :

rsmgclient = "2.0.0"

3. To create the actual program, add the following code to the src/main.rs file:

use rsmgclient::{ConnectParams, Connection, MgError, Value, SSLMode};

fn execute_query() -> Result<(), MgError> {
// Connect to Memgraph.
let connect_params = ConnectParams {
host: Some(String::from("localhost")),
port: 7687,
sslmode: SSLMode::Disable,
..Default::default()
};
let mut connection = Connection::connect(&connect_params)?;

// Create simple graph.
connection.execute_without_results(
"CREATE (p1:Person {name: 'Alice'})-[l1:Likes]->(m:Software {name: 'Memgraph'}) \
CREATE (p2:Person {name: 'John'})-[l2:Likes]->(m);",
)?;

// Fetch the graph.
let columns = connection.execute("MATCH (n)-[r]->(m) RETURN n, r, m;", None)?;
println!("Columns: {}", columns.join(", "));
for record in connection.fetchall()? {
for value in record.values {
match value {
Value::Node(node) => print!("{}", node),
Value::Relationship(edge) => print!("-{}-", edge),
value => print!("{}", value),
}
}
println!();
}
connection.commit()?;

Ok(())
}

fn main() {
if let Err(error) = execute_query() {
panic!("{}", error)
}
}

4. Open a terminal, position yourself in the project root directory /memgraph_rust and run:

cargo build

and after that:

cargo run

You should see an output similar to the following:

Columns: n, r, m
(:Person {'name': 'Alice'})-[:Likes {}]-(:Software {'name': 'Memgraph'})
(:Person {'name': 'John'})-[:Likes {}]-(:Software {'name': 'Memgraph'})

Where to next?

For real-world examples of how to use Memgraph, we suggest you take a look at the Tutorials page. You can also browse through the How-to guides section to get an overview of all the functionalities Memgraph offers.