redisgraph-rs

redisgraph-rs 是RedisGraph，Redis的图数据库的惯用Rust客户端。

该crate解析RedisGraph的响应并将其转换为普通的Rust值。它提供了一个非常灵活的API，允许您仅使用一个函数： Graph::query，来检索单个值、单个记录或多个记录。

如果您想使用这个crate，请将以下内容添加到您的Cargo.toml中

[dependencies]
redis = "0.15.1"
redisgraph = "0.1.0"

警告：这个库还没有经过彻底测试，一些功能仍然缺失。请期待bug和破坏性变更。

资源

• RedisGraph文档：redisgraph.io
• API参考：docs.rs/redisgraph

示例

首先，使用以下命令在您的机器上运行RedisGraph

$ docker run --name redisgraph-test -d --rm -p 6379:6379 redislabs/redisgraph

然后，尝试以下代码

use redis::Client;
use redisgraph::{Graph, RedisGraphResult};

fn main() -> RedisGraphResult<()> {
    let client = Client::open("redis://127.0.0.1")?;
    let mut connection = client.get_connection()?;

    let mut graph = Graph::open(connection, "MotoGP".to_string())?;

    // Create six nodes (three riders, three teams) and three relationships between them.
    graph.mutate("CREATE (:Rider {name: 'Valentino Rossi', birth_year: 1979})-[:rides]->(:Team {name: 'Yamaha'}), \
        (:Rider {name:'Dani Pedrosa', birth_year: 1985, height: 1.58})-[:rides]->(:Team {name: 'Honda'}), \
        (:Rider {name:'Andrea Dovizioso', birth_year: 1986, height: 1.67})-[:rides]->(:Team {name: 'Ducati'})")?;

    // Get the names and birth years of all riders in team Yamaha.
    let results: Vec<(String, u32)> = graph.query("MATCH (r:Rider)-[:rides]->(t:Team) WHERE t.name = 'Yamaha' RETURN r.name, r.birth_year")?;
    // Since we know just one rider in our graph rides for team Yamaha,
    // we can also write this and only get the first record:
    let (name, birth_year): (String, u32) = graph.query("MATCH (r:Rider)-[:rides]->(t:Team) WHERE t.name = 'Yamaha' RETURN r.name, r.birth_year")?;
    // Let's now get all the data about the riders we have.
    // Be aware of that we only know the height of some riders, and therefore we use an `Option`:
    let results: Vec<(String, u32, Option<f32>)> = graph.query("MATCH (r:Rider) RETURN r.name, r.birth_year, r.height")?;

    // That was just a demo; we don't need this graph anymore. Let's delete it from the database:
    graph.delete()?;

    Ok(())
}