composable_indexes_core/
index.rs

1use crate::collection::{Insert, Key, Remove, Update};
2use std::collections::HashMap;
3
4pub trait Index<'t, In> {
5    type Query<Out>
6    where
7        Self: 't,
8        Out: 't;
9
10    fn insert(&mut self, op: &Insert<In>);
11    fn remove(&mut self, op: &Remove<In>);
12
13    fn update(&mut self, op: &Update<In>) {
14        self.remove(&Remove {
15            key: op.key,
16            existing: op.existing,
17        });
18        self.insert(&Insert {
19            key: op.key,
20            new: op.new,
21        });
22    }
23
24    fn query<Out>(&'t self, env: QueryEnv<'t, Out>) -> Self::Query<Out>;
25}
26
27pub struct QueryEnv<'t, T> {
28    pub data: &'t HashMap<Key, T>,
29}
30
31impl<'t, T> Clone for QueryEnv<'t, T> {
32    fn clone(&self) -> Self {
33        QueryEnv { data: self.data }
34    }
35}

composable_indexes_core/index.rs

composable_indexes_core/
index.rs