Struct LockView 

pub struct LockView<'a, T, L, F>
where
    T: 'static,
    L: LockValue<T> + 'a,
    F: Fn(&LockQuery<'a, T, L>) -> LockQuery<'a, T, L>,
{ /* private fields */ }

A reusable query pattern (like a SQL VIEW).

Views encapsulate query logic that can be reused across multiple queries.

Implementations

impl<'a, T, L, F> LockView<'a, T, L, F>

where T: 'static, L: LockValue<T> + 'a, F: Fn(&LockQuery<'a, T, L>) -> LockQuery<'a, T, L>,

pub fn new(builder: F) -> LockView<'a, T, L, F>

Create a new view with a query builder function.

Example

let expensive_view = LockView::new(|query| {
    query.where_(Product::price(), |&p| p > 500.0)
});

pub fn apply(&self, base: &LockQuery<'a, T, L>) -> LockQuery<'a, T, L>

where T: Clone, L: Clone,

Apply the view to a base query.