Trait holochain_state::query::Stores

pub trait Stores<Q: Query> {
    type O: StoresIter<Q::Item>;

    // Required method
    fn get_initial_data(&self, query: Q) -> StateQueryResult<Self::O>;
}

Represents the data sources which are needed to perform a Query. From these sources, we need:

• a collection of Data needed by the query (Q::Data)
• the ability to fetch an Entry during the Render phase of the query.

Required Associated Types

type O: StoresIter<Q::Item>

Required Methods

fn get_initial_data(&self, query: Q) -> StateQueryResult<Self::O>

Gets the raw initial data from the database, needed to begin the query.

Implementors

impl<'borrow, 'txn, Q> Stores<Q> for DbScratch<'borrow, 'txn>

where Q: Query<Item = Judged<SignedActionHashed>>,

type O = DbScratchIter<'borrow, Q>

impl<'stmt, Q: Query> Stores<Q> for Txn<'stmt, '_>

type O = QueryStmt<'stmt, Q>

impl<'stmt, Q: Query> Stores<Q> for Txns<'stmt, '_>

type O = QueryStmts<'stmt, Q>

impl<Q> Stores<Q> for Scratch

where Q: Query<Item = Judged<SignedActionHashed>>,

type O = FilteredScratch