81 lines
1.5 KiB
Rust
81 lines
1.5 KiB
Rust
use owl::prelude::*;
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#[model]
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#[derive(Debug)]
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pub struct Item {
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pub id: Id,
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pub cost: f64,
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pub strength: f64,
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}
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pub fn main() {
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// Init
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let db = Database::in_memory();
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// Save
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let item = Item {
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id: Id::new_ulid(),
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cost: 1.80,
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strength: 0.4,
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};
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let first_id = item.id.clone();
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dbg!(&item);
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let item = db.save(item);
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// Get
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let i: Model<Item> = db.get(item.read().id.clone()).unwrap();
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dbg!(&i.read());
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db.save(Item {
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id: Id::new_ulid(),
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cost: 0.3,
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strength: 2.4,
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});
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db.save(Item {
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id: Id::new_ulid(),
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cost: 3.4,
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strength: 0.4,
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});
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db.save(Item {
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id: Id::new_ulid(),
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cost: 20.0,
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strength: 200.5,
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});
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db.save(Item {
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id: Id::new_ulid(),
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cost: 4.2,
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strength: 4.2,
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});
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// Query
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let res = db.query(|x: &Item| x.cost > 1.5);
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dbg!(&res
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.into_iter()
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.map(|x| format!("{:?}", x.read()))
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.collect::<Vec<_>>());
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// Update
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db.update(&mut db.query(|x: &Item| x.cost > 1.5), |x: &mut Item| {
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x.cost += 1.0;
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});
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let item: Model<Item> = db.get(first_id.to_string().as_str()).unwrap();
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dbg!(&item.read());
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assert_eq!(item.read().cost, 2.80);
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// Aggregates
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let count = db.query(|x: &Item| x.cost > 1.5).len();
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let sum: f64 = db
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.query(|x: &Item| x.cost > 1.5)
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.iter()
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.map(|x| x.read().cost)
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.sum();
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dbg!(count);
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dbg!(sum);
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}
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