Trait diesel::query_dsl::methods::LockingDsl

pub trait LockingDsl<Lock> {
    type Output;

    // Required method
    fn with_lock(self, lock: Lock) -> Self::Output;
}

Methods related to locking select statements

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

Required Associated Types

type Output

The type returned by set_lock. See dsl::ForUpdate and friends for convenient access to this type.

Required Methods

fn with_lock(self, lock: Lock) -> Self::Output

See the trait level documentation

Implementors

impl<S, Lock> LockingDsl<Lock> for Alias<S>where Self: QuerySource + AsQuery<Query = SelectStatement<FromClause<Self>>>, <Self as QuerySource>::DefaultSelection: Expression<SqlType = <Self as AsQuery>::SqlType> + ValidGrouping<()>, <Self as AsQuery>::SqlType: TypedExpressionType,

type Output = <SelectStatement<FromClause<Alias<S>>, DefaultSelectClause<FromClause<Alias<S>>>, NoDistinctClause, NoWhereClause, NoOrderClause, LimitOffsetClause<NoLimitClause, NoOffsetClause>, NoGroupByClause, NoHavingClause, NoLockingClause> as LockingDsl<Lock>>::Output

impl<T, Lock> LockingDsl<Lock> for Twhere T: Table + AsQuery<Query = SelectStatement<FromClause<T>>>, T::DefaultSelection: Expression<SqlType = T::SqlType> + ValidGrouping<()>, T::SqlType: TypedExpressionType,

type Output = <SelectStatement<FromClause<T>, DefaultSelectClause<FromClause<T>>, NoDistinctClause, NoWhereClause, NoOrderClause, LimitOffsetClause<NoLimitClause, NoOffsetClause>, NoGroupByClause, NoHavingClause, NoLockingClause> as LockingDsl<Lock>>::Output