polars_parquet::parquet::encoding::hybrid_rle::gatherer

Struct TryFromUsizeTranslator

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pub struct TryFromUsizeTranslator<O: TryFrom<usize>>(/* private fields */);

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impl<O: Default + TryFrom<usize>> Default for TryFromUsizeTranslator<O>

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fn default() -> TryFromUsizeTranslator<O>

Returns the “default value” for a type. Read more
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impl<O: TryFrom<usize>> Translator<O> for TryFromUsizeTranslator<O>

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fn translate(&self, value: u32) -> ParquetResult<O>

Translate from a decoded value to the output format
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fn translate_slice( &self, target: &mut Vec<O>, source: &[u32], ) -> ParquetResult<()>

Translate from a slice of decoded values to the output format and write them to a target. Read more
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fn translate_chunk( &self, target: &mut Vec<O>, source: &<u32 as Unpackable>::Unpacked, ) -> ParquetResult<()>

Translate from a chunk of unpacked items to the output format and write them to a target. Read more
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fn translate_bitpacked_all( &self, target: &mut Vec<O>, decoder: Decoder<'_, u32>, ) -> ParquetResult<()>

Translate and collect all the items in a Decoder to a target. Read more
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fn translate_bitpacked_limited<'a>( &self, target: &mut Vec<O>, decoder: Decoder<'a, u32>, limit: usize, ) -> ParquetResult<BufferedBitpacked<'a>>

Translate and collect a limited number of items in a Decoder to a target. Read more
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fn translate_bitpacked<'a>( &self, target: &mut Vec<O>, decoder: Decoder<'a, u32>, limit: Option<usize>, ) -> ParquetResult<(usize, Option<HybridRleBuffered<'a>>)>

Translate and collect items in a Decoder to a target. Read more

Auto Trait Implementations§

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<O, T> HybridRleGatherer<O> for T
where O: Clone, T: Translator<O>,

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type Target = Vec<O>

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fn target_reserve( &self, target: &mut <T as HybridRleGatherer<O>>::Target, n: usize, )

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fn target_num_elements( &self, target: &<T as HybridRleGatherer<O>>::Target, ) -> usize

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fn hybridrle_to_target(&self, value: u32) -> Result<O, ParquetError>

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fn gather_one( &self, target: &mut <T as HybridRleGatherer<O>>::Target, value: O, ) -> Result<(), ParquetError>

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fn gather_repeated( &self, target: &mut <T as HybridRleGatherer<O>>::Target, value: O, n: usize, ) -> Result<(), ParquetError>

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fn gather_slice( &self, target: &mut <T as HybridRleGatherer<O>>::Target, source: &[u32], ) -> Result<(), ParquetError>

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fn gather_chunk( &self, target: &mut <T as HybridRleGatherer<O>>::Target, source: &<u32 as Unpackable>::Unpacked, ) -> Result<(), ParquetError>

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fn gather_bitpacked_all( &self, target: &mut <T as HybridRleGatherer<O>>::Target, decoder: Decoder<'_, u32>, ) -> Result<(), ParquetError>

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fn gather_bitpacked_limited<'a>( &self, target: &mut <T as HybridRleGatherer<O>>::Target, decoder: Decoder<'a, u32>, limit: usize, ) -> Result<BufferedBitpacked<'a>, ParquetError>

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fn gather_bitpacked<'a>( &self, target: &mut <T as HybridRleGatherer<O>>::Target, decoder: Decoder<'a, u32>, limit: Option<usize>, ) -> Result<(usize, Option<HybridRleBuffered<'a>>), ParquetError>

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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> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. 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.