init

examples/references.rs

@@ -0,0 +1,61 @@
+use owl::{db::model::person::Person, prelude::*};
+
+#[model]
+#[derive(Debug)]
+pub struct Car {
+    pub id: Id,
+    pub price: u32,
+    pub driver: IdRef<Person>,
+}
+
+pub fn main() {
+    env_logger::init();
+
+    // Init
+    let db = Database::in_memory();
+
+    let per = Person::new_id("perso", "P1", "");
+    let per2: Person = Person::new_id("perso2", "P2", "");
+
+    // Save
+    let car = Car {
+        id: Id::new_ulid(),
+        price: 1000,
+        driver: per.reference(),
+    };
+    db.save(per);
+    let per2 = db.save(per2);
+    let mut car = db.save(car);
+
+    println!(
+        "P1 has {} cars",
+        db.query(|car: &Car| {
+            car.driver
+                .dereference(&db)
+                .read()
+                .first_name
+                .current()
+                .unwrap()
+                .as_str()
+                == "P1"
+        })
+        .iter()
+        .count()
+    );
+
+    car.write(&db, |car| {
+        car.driver = per2.reference();
+    });
+
+    println!(
+        "P1 has {} cars",
+        db.query(|car: &Car| {
+            car.driver
+                .try_dereference(&db)
+                .map(|x| x.read().first_name.current().unwrap().as_str() == "P1")
+                .unwrap_or(false)
+        })
+        .iter()
+        .count()
+    );
+}