Trait holochain_state::query::Query[−][src]

pub trait Query: Clone {
    type State;
    type Item: HasValidationStatus;
    type Output;
    fn init_fold(&self) -> StateQueryResult<Self::State>;

    fn as_map(&self) -> Arc<dyn Fn(&Row<'_>) -> StateQueryResult<Self::Item>>;

    fn fold(
        &self, 
        state: Self::State, 
        data: Self::Item
    ) -> StateQueryResult<Self::State>;

    fn render<S>(
        &self, 
        state: Self::State, 
        stores: S
    ) -> StateQueryResult<Self::Output>
    where
        S: Store;

    fn query(&self) -> String { ... }

    fn params(&self) -> Vec<Params<'_>>ⓘ
Notable traits for Vec<u8, A>
impl<A> Write for Vec<u8, A> where
    A: Allocator, 
 { ... }

    fn as_filter(&self) -> Box<dyn Fn(&QueryData<Self>) -> bool> { ... }

    fn run<S>(&self, stores: S) -> StateQueryResult<Self::Output>
    where
        S: Stores<Self>,
        S: Store,
    { ... }
}
Expand description

You should keep your query type cheap to clone. If there is any large data put it in an Arc.

Associated Types

Required methods

Provided methods

Implementors