gremlin-client 0.8.10

use gremlin_client::derive::{FromGMap, FromGValue};
use gremlin_client::process::traversal::traversal;
use gremlin_client::GremlinClient;
use std::convert::TryFrom;
fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = GremlinClient::connect("localhost")?;

    #[derive(Debug, PartialEq, FromGValue, FromGMap)]
    struct Person {
        name: String,
    }

    let results = client
        .execute("g.V(param).valueMap()", &[("param", &1)])?
        .filter_map(Result::ok)
        .map(|f| Person::try_from(f))
        .collect::<Result<Vec<Person>, _>>()?;

    println!("Vertex count: {}", results.len());

    let vertex = &results[0];

    println!("Person {:?}", vertex);

    let g = traversal().with_remote(client);

    let results = g
        .v(1)
        .value_map(())
        .iter()?
        .filter_map(Result::ok)
        .map(Person::try_from)
        .collect::<Result<Vec<Person>, _>>()?;

    println!("Vertex count: {}", results.len());

    let vertex = &results[0];

    println!("Person {:?}", vertex);
    Ok(())
}