diesel/query_dsl/
limit_dsl.rs

1use crate::query_source::Table;
2
3/// The `limit` method
4///
5/// This trait should not be relied on directly by most apps. Its behavior is
6/// provided by [`QueryDsl`]. However, you may need a where clause on this trait
7/// to call `limit` from generic code.
8///
9/// [`QueryDsl`]: crate::QueryDsl
10pub trait LimitDsl<DummyArgForAutoType = i64> {
11    /// The type returned by `.limit`
12    type Output;
13
14    /// See the trait documentation
15    fn limit(self, limit: i64) -> Self::Output;
16}
17
18impl<T> LimitDsl for T
19where
20    T: Table,
21    T::Query: LimitDsl,
22{
23    type Output = <T::Query as LimitDsl>::Output;
24
25    fn limit(self, limit: i64) -> Self::Output {
26        self.as_query().limit(limit)
27    }
28}