parquet::arrow::arrow_writer::byte_array

Struct DictEncoder

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struct DictEncoder {
    interner: Interner<ByteArrayStorage>,
    indices: Vec<u64>,
    variable_length_bytes: i64,
}
Expand description

A dictionary encoder for byte array data

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§interner: Interner<ByteArrayStorage>§indices: Vec<u64>§variable_length_bytes: i64

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impl DictEncoder

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fn encode<T>(&mut self, values: T, indices: &[usize])
where T: ArrayAccessor + Copy, T::Item: AsRef<[u8]>,

Encode values to the in-progress page

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fn bit_width(&self) -> u8

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fn estimated_memory_size(&self) -> usize

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fn estimated_data_page_size(&self) -> usize

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fn estimated_dict_page_size(&self) -> usize

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fn flush_dict_page(self) -> DictionaryPage

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fn flush_data_page( &mut self, min_value: Option<ByteArray>, max_value: Option<ByteArray>, ) -> DataPageValues<ByteArray>

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impl Debug for DictEncoder

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

Formats the value using the given formatter. Read more
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impl Default for DictEncoder

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fn default() -> DictEncoder

Returns the “default value” for a type. Read more

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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