parquet::arrow::async_reader::metadata

Struct MetadataFetchFn

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struct MetadataFetchFn<F>(F);

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§0: F

Trait Implementations§

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impl<F, Fut> MetadataFetch for MetadataFetchFn<F>
where F: FnMut(Range<usize>) -> Fut + Send, Fut: Future<Output = Result<Bytes>> + Send,

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fn fetch(&mut self, range: Range<usize>) -> BoxFuture<'_, Result<Bytes>>

Return a future that fetches the specified range of bytes asynchronously Read more

Auto Trait Implementations§

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impl<F> Freeze for MetadataFetchFn<F>
where F: Freeze,

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impl<F> RefUnwindSafe for MetadataFetchFn<F>
where F: RefUnwindSafe,

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impl<F> Send for MetadataFetchFn<F>
where F: Send,

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impl<F> Sync for MetadataFetchFn<F>
where F: Sync,

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impl<F> Unpin for MetadataFetchFn<F>
where F: Unpin,

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impl<F> UnwindSafe for MetadataFetchFn<F>
where F: UnwindSafe,

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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> 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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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<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T