如何使用 Rust 查询 Redis 中的图数据

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

 fn main() -> RedisGraphResult<()> {
   let client = Client::open("redis://127.0.0.1:6379")?;
   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(())