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Updated for v 0.12.0
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[package] | |
name = "edge" | |
version = "0.1.0" | |
authors = ["J. Cliff Dyer <[email protected]>"] | |
[dependencies] | |
indradb = "0.12.0" | |
indradb-lib = "0.12.0" | |
serde_json = "*" | |
uuid = "*" |
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extern crate uuid; | |
extern crate indradb; | |
extern crate common; | |
extern crate serde_json; | |
use serde_json::de::from_str; | |
use uuid::Uuid; | |
use common::{datastore}; | |
use indradb::{EdgeKey, VertexQuery, Type}; | |
// Traits! | |
use indradb::{Datastore, Transaction}; | |
fn create_vertex<T: Transaction>(trans: &T, node_type: &Type, name: &str) -> indradb::Result<Uuid> { | |
let uuid = trans.create_vertex(node_type)?; | |
trans.set_vertex_metadata( | |
&VertexQuery::Vertices { ids: vec![uuid] }, | |
"name", | |
&from_str(&format!(r#""{}""#, name)).unwrap(), | |
)?; | |
Ok(uuid) | |
} | |
fn main() { | |
let station = Type::new("station".to_owned()).unwrap(); | |
let watcher = Type::new("watcher".to_owned()).unwrap(); | |
let feeds = Type::new("feeds".to_owned()).unwrap(); | |
let observes = Type::new("observes".to_owned()).unwrap(); | |
let indra = datastore(); | |
let (vertices, _edges) = { | |
let trans = indra.transaction().expect("txn"); | |
let v1 = create_vertex(&trans, &station, "Intake station").expect("v1"); | |
let v2 = create_vertex(&trans, &station, "Processing station").expect("v2"); | |
let v3 = create_vertex(&trans, &station, "Output station").expect("v3"); | |
let w1 = create_vertex(&trans, &watcher, "Watcher").expect("w1"); | |
let e1 = trans.create_edge(&EdgeKey::new(v1, feeds.clone(), v2)); | |
let e2 = trans.create_edge(&EdgeKey::new(v2, feeds.clone(), v3)); | |
let e3 = trans.create_edge(&EdgeKey::new(w1, feeds.clone(), v2)); | |
let e4 = trans.create_edge(&EdgeKey::new(w1, observes.clone(), v1)); | |
let e5 = trans.create_edge(&EdgeKey::new(w1, observes.clone(), v3)); | |
let e6 = trans.create_edge(&EdgeKey::new(w1, observes.clone(), v1)); | |
(vec![v1, v2, v3, w1], vec![e1, e2, e3, e4, e5, e6]) | |
}; | |
{ | |
let trans = indra.transaction().expect("txn"); | |
let watched_stations = VertexQuery::Vertices { ids: vec![vertices[3]] } | |
.outbound_edges(Some(observes.clone()), None, None, 64) | |
.inbound_vertices(64); | |
println!("Watched stations:"); | |
let names = trans.get_vertex_metadata(&watched_stations, "name").expect("get names"); | |
for metadata in names { | |
println!(" {}", metadata.value.as_str().expect("json string")); | |
} | |
} | |
} |
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