scylla_cql::types::serialize::batch

Struct BatchValuesFromIterator

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pub struct BatchValuesFromIterator<'sr, IT> { /* private fields */ }
Expand description

Implements BatchValues from an Iterator over references to things that implement SerializeRow

This is to avoid requiring allocating a new Vec containing all the SerializeRows directly: with this, one can write: session.batch(&batch, BatchValuesFromIter::from(lines_to_insert.iter().map(|l| &l.value_list))) where lines_to_insert may also contain e.g. data to pick the statement…

The underlying iterator will always be cloned at least once, once to compute the length if it can’t be known in advance, and be re-cloned at every retry. It is consequently expected that the provided iterator is cheap to clone (e.g. slice.iter().map(...)).

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impl<'sr, IT, SR> BatchValuesFromIterator<'sr, IT>
where IT: Iterator<Item = &'sr SR> + Clone, SR: SerializeRow + 'sr,

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pub fn new(into_iter: impl IntoIterator<IntoIter = IT>) -> Self

Creates a new `BatchValuesFromIter`` object.

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impl<'sr, IT, SR> BatchValues for BatchValuesFromIterator<'sr, IT>
where IT: Iterator<Item = &'sr SR> + Clone, SR: SerializeRow + 'sr,

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type BatchValuesIter<'r> = BatchValuesIteratorFromIterator<IT> where Self: 'r

An Iterator-like object over the values from the parent BatchValues object.
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fn batch_values_iter(&self) -> Self::BatchValuesIter<'_>

Returns an iterator over the data contained in this object.
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impl<'sr, IT, SR> From<IT> for BatchValuesFromIterator<'sr, IT>
where IT: Iterator<Item = &'sr SR> + Clone, SR: SerializeRow + 'sr,

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fn from(it: IT) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl<'sr, IT> Freeze for BatchValuesFromIterator<'sr, IT>
where IT: Freeze,

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impl<'sr, IT> RefUnwindSafe for BatchValuesFromIterator<'sr, IT>
where IT: RefUnwindSafe,

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impl<'sr, IT> Send for BatchValuesFromIterator<'sr, IT>
where IT: Send,

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impl<'sr, IT> Sync for BatchValuesFromIterator<'sr, IT>
where IT: Sync,

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impl<'sr, IT> Unpin for BatchValuesFromIterator<'sr, IT>
where IT: Unpin,

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impl<'sr, IT> UnwindSafe for BatchValuesFromIterator<'sr, IT>
where IT: UnwindSafe,

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, U> Into<U> 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V