Struct Query

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pub struct Query<Record> { /* private fields */ }

Expand description

A type-checked local collection query.

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impl<Record: IrohRecord> Query<Record>

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pub fn filter(self, filter: impl Into<Predicate<Record>>) -> Self

Adds an equality predicate. V1 accepts one predicate per query.

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pub fn order_by<Value>( self, field: TypedField<Record, Value>, direction: OrderDirection, ) -> Self
where Value: RecordKey + Ord + Send + Sync + 'static,

Sets the primary typed ordering clause, replacing any earlier ordering.

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pub fn then_by<Value>( self, field: TypedField<Record, Value>, direction: OrderDirection, ) -> Self
where Value: RecordKey + Ord + Send + Sync + 'static,

Adds a typed tie-breaking clause after all existing ordering clauses.

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pub const fn limit(self, limit: usize) -> Self

Bounds the number of records returned.

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pub fn after(self, cursor: Cursor) -> Self

Continues after a cursor produced by the exact same query shape.

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pub async fn fetch(self) -> Result<Vec<Record>, DbError>

Executes against one local redb read snapshot.

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pub async fn fetch_page(self) -> Result<Page<Record>, DbError>

Executes a stable page against one local redb read snapshot.

Auto Trait Implementations§

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impl<Record> !UnwindSafe for Query<Record>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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