Struct arrow::array::BufferBuilder

pub struct BufferBuilder<T: ArrowPrimitiveType> { /* fields omitted */ }

Buffer builder with zero-copy build method

Trait Implementations

impl<T: ArrowPrimitiveType> BufferBuilderTrait<T> for BufferBuilder<T>

default fn new(capacity: usize) -> Self

Creates a builder with a fixed initial capacity

fn len(&self) -> usize

Returns the number of array elements (slots) in the builder

fn capacity(&self) -> usize

Returns the current capacity of the builder (number of elements)

default fn advance(&mut self, i: usize) -> Result<()>

default fn reserve(&mut self, n: usize) -> Result<()>

Reserves memory for n elements of type T.

default fn append(&mut self, v: T::Native) -> Result<()>

Appends a value into the builder, growing the internal buffer as needed.

default fn append_slice(&mut self, slice: &[T::Native]) -> Result<()>

Appends a slice of type T, growing the internal buffer as needed.

default fn finish(&mut self) -> Buffer

Reset this builder and returns an immutable Buffer.

impl BufferBuilderTrait<BooleanType> for BufferBuilder<BooleanType>

fn new(capacity: usize) -> Self

Creates a builder with a fixed initial capacity.

fn advance(&mut self, i: usize) -> Result<()>

fn append(&mut self, v: bool) -> Result<()>

Appends a value into the builder, growing the internal buffer as needed.

fn append_slice(&mut self, slice: &[bool]) -> Result<()>

Appends a slice of type T, growing the internal buffer as needed.

fn reserve(&mut self, n: usize) -> Result<()>

Reserves memory for n elements of type T.

fn finish(&mut self) -> Buffer

Reset this builder and returns an immutable Buffer.

fn len(&self) -> usize

fn capacity(&self) -> usize