Trait django_query::filtering::Filter

pub trait Filter<R> {
    fn filter_one(&self, data: &R) -> bool;

    fn filter_vec(&self, data: &mut Vec<R>) { ... }
    fn filter_ref_vec(&self, data: &mut Vec<&R>) { ... }
}

An object representing a test for objects to see whether they are included in a given result set.

Each stanza of a query results in one Filter being constructed. There is no dynamic dispatch below this point in general, a unique codepath is generated for every combination of field and operator, which ends up resulting in a filter for each one of these.

Required methods

fn filter_one(&self, data: &R) -> bool

Produce a true/false response indicating an in/out result for the object.

Provided methods

fn filter_vec(&self, data: &mut Vec<R>)

Helper method to filter an entire vector by this filter. Note that there is no virtual function call overhead here.

fn filter_ref_vec(&self, data: &mut Vec<&R>)

Helper method to filter an entire vector by this filter. Note that there is no virtual function call overhead here.

Implementors