init

examples/watch.rs

@@ -0,0 +1,61 @@
+use owl::prelude::*;
+
+#[model]
+#[derive(Debug)]
+pub struct Contact {
+    pub id: Id,
+    pub age: u16,
+}
+
+pub fn age_one_year(p: &mut Model<Contact>, db: &Database) {
+    p.write(db, |p| p.age += 1);
+}
+
+pub fn main() {
+    env_logger::init();
+
+    // Init
+    let db = Database::in_memory();
+
+    let mut c1 = db.save(Contact {
+        id: Id::String("c1".to_string()),
+        age: 15,
+    });
+    let mut c2 = db.save(Contact {
+        id: Id::String("c2".to_string()),
+        age: 17,
+    });
+    let mut c3 = db.save(Contact {
+        id: Id::String("c3".to_string()),
+        age: 16,
+    });
+
+    let age_18_watcher = db.watch::<Contact, _, _>(
+        |c| c.age == 18,
+        |c| {
+            println!("{} turned 18", c.id);
+        },
+    );
+
+    std::thread::spawn(move || loop {
+        age_18_watcher.process();
+    });
+
+    age_one_year(&mut c1, &db);
+    age_one_year(&mut c2, &db);
+    age_one_year(&mut c3, &db);
+
+    age_one_year(&mut c1, &db);
+    age_one_year(&mut c2, &db);
+    age_one_year(&mut c3, &db);
+
+    age_one_year(&mut c1, &db);
+    age_one_year(&mut c2, &db);
+    age_one_year(&mut c3, &db);
+
+    age_one_year(&mut c1, &db);
+    age_one_year(&mut c2, &db);
+    age_one_year(&mut c3, &db);
+
+    std::thread::sleep(std::time::Duration::from_secs(10));
+}