LookupStatementResult

diesel::connection::statement_cache::strategy

Enum LookupStatementResult 

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pub enum LookupStatementResult<'a, DB, Statement>
where
    DB: Backend,
{
    CacheEntry(Entry<'a, StatementCacheKey<DB>, Statement>),
    NoCache(StatementCacheKey<DB>),
}
Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Expand description

Indicates the cache key status

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CacheEntry(Entry<'a, StatementCacheKey<DB>, Statement>)

The cache entry, either already populated or vacant in the later case the caller needs to prepare the statement and insert it into the cache

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NoCache(StatementCacheKey<DB>)

This key should not be cached

Auto Trait Implementations§

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impl<'a, DB, Statement> Freeze for LookupStatementResult<'a, DB, Statement>

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impl<'a, DB, Statement> RefUnwindSafe for LookupStatementResult<'a, DB, Statement>
where <DB as TypeMetadata>::TypeMetadata: RefUnwindSafe, Statement: RefUnwindSafe,

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impl<'a, DB, Statement> Send for LookupStatementResult<'a, DB, Statement>
where Statement: Send, <DB as TypeMetadata>::TypeMetadata: Send,

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impl<'a, DB, Statement> Sync for LookupStatementResult<'a, DB, Statement>
where Statement: Sync, <DB as TypeMetadata>::TypeMetadata: Sync,

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impl<'a, DB, Statement> Unpin for LookupStatementResult<'a, DB, Statement>
where <DB as TypeMetadata>::TypeMetadata: Unpin,

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impl<'a, DB, Statement> !UnwindSafe for LookupStatementResult<'a, DB, Statement>

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impl<T> AggregateExpressionMethods for T

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fn aggregate_distinct(self) -> AggregateDistinct<Self>
where Self: DistinctDsl,

DISTINCT modifier for aggregate functions Read more
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fn aggregate_all(self) -> AggregateAll<Self>
where Self: AllDsl,

ALL modifier for aggregate functions Read more
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fn aggregate_filter<P>(self, f: P) -> AggregateFilter<Self, P>
where P: AsExpression<Bool>, Self: FilterDsl<P::Expression>,

Add an aggregate function filter Read more
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fn aggregate_order<O>(self, o: O) -> AggregateOrder<Self, O>
where Self: OrderAggregateDsl<O>,

Add an aggregate function order Read more
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Calls U::from(self).

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fn into_sql<T>(self) -> AsExprOf<Self, T>
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Convert self to an expression for Diesel’s query builder. Read more
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