Trait LoadQuery

pub trait LoadQuery<'query, Conn, U, B = DefaultLoadingMode>: RunQueryDsl<Conn> {
    type RowIter<'conn>: Iterator<Item = QueryResult<U>>
       where Conn: 'conn;

    // Required method
    fn internal_load(self, conn: &mut Conn) -> QueryResult<Self::RowIter<'_>>;
}

The load method

This trait should not be relied on directly by most apps. Its behavior is provided by RunQueryDsl. However, you may need a where clause on this trait to call load from generic code.

Required Associated Types

type RowIter<'conn>: Iterator<Item = QueryResult<U>> where Conn: 'conn

Return type of LoadQuery::internal_load

Required Methods

fn internal_load(self, conn: &mut Conn) -> QueryResult<Self::RowIter<'_>>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Load this query

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<'query, Conn, T, U, DB, B> LoadQuery<'query, Conn, U, B> for T

where Conn: Connection<Backend = DB> + LoadConnection<B>, T: AsQuery + RunQueryDsl<Conn>, T::Query: QueryFragment<DB> + QueryId + 'query, T::SqlType: CompatibleType<U, DB>, DB: Backend + QueryMetadata<T::SqlType> + 'static, U: FromSqlRow<<T::SqlType as CompatibleType<U, DB>>::SqlType, DB> + 'static, <T::SqlType as CompatibleType<U, DB>>::SqlType: 'static,

type RowIter<'conn> = LoadIter<U, <Conn as LoadConnection<B>>::Cursor<'conn, 'query>, <<T as AsQuery>::SqlType as CompatibleType<U, DB>>::SqlType, DB> where Conn: 'conn