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Paginator

turso_orm::query

Struct Paginator 

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pub struct Paginator<'db, C, M> { /* private fields */ }
Expand description

Page-by-page access to a query.

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impl<C: ConnectionTrait, M: FromQueryResult> Paginator<'_, C, M>

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pub async fn fetch_page(&self, page: u64) -> Result<Vec<M>>

Fetches the rows of page page, counted from zero.

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Returns DbErr::Driver when the query fails or a row cannot be decoded.

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pub async fn num_items(&self) -> Result<u64>

The total number of rows.

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Returns DbErr::RecordNotFound when the count query returns no row; DbErr::Driver when the query fails.

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pub async fn num_pages(&self) -> Result<u64>

The total number of pages.

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Returns the errors of num_items.

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pub async fn num_items_and_pages(&self) -> Result<(u64, u64)>

Both totals from a single count query.

§Errors

Returns the errors of num_items.

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pub async fn for_each_page(&self, f: impl FnMut(Vec<M>) -> bool) -> Result<()>

Fetches every page in turn, calling f with each one, until a page comes back short or f returns false.

§Errors

Returns the errors of fetch_page.

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impl<'db, C: Debug, M: Debug> Debug for Paginator<'db, C, M>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'db, C, M> Freeze for Paginator<'db, C, M>
where &'db C: Freeze, PhantomData<M>: Freeze,

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impl<'db, C, M> RefUnwindSafe for Paginator<'db, C, M>
where &'db C: RefUnwindSafe, PhantomData<M>: RefUnwindSafe,

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impl<'db, C, M> Send for Paginator<'db, C, M>
where &'db C: Send, PhantomData<M>: Send,

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impl<'db, C, M> Sync for Paginator<'db, C, M>
where &'db C: Sync, PhantomData<M>: Sync,

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impl<'db, C, M> Unpin for Paginator<'db, C, M>
where &'db C: Unpin, PhantomData<M>: Unpin,

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impl<'db, C, M> UnsafeUnpin for Paginator<'db, C, M>
where &'db C: UnsafeUnpin, PhantomData<M>: UnsafeUnpin,

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impl<'db, C, M> UnwindSafe for Paginator<'db, C, M>
where &'db C: UnwindSafe, PhantomData<M>: UnwindSafe,

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

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Gets the TypeId of self. Read more
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where T: ?Sized,

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fn borrow(&self) -> &T

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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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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where T: 'static,

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fn from(t: T) -> 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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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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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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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const ALIGN: usize

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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