Trait arrow::builder::BufferBuilderTrait

pub trait BufferBuilderTrait<T: ArrowPrimitiveType> {
    fn new(capacity: usize) -> Self;
    fn len(&self) -> usize;
    fn capacity(&self) -> usize;
    fn advance(&mut self, i: usize) -> Result<()>;
    fn reserve(&mut self, n: usize) -> Result<()>;
    fn push(&mut self, v: T::Native) -> Result<()>;
    fn push_slice(&mut self, slice: &[T::Native]) -> Result<()>;
    fn finish(self) -> Buffer;
}

Required methods

fn new(capacity: usize) -> Self

fn len(&self) -> usize

fn capacity(&self) -> usize

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

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

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

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

fn finish(self) -> Buffer

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Implementors

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

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

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

Pushes 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(self) -> Buffer

Consumes this and returns an immutable Buffer.

fn len(&self) -> usize

fn capacity(&self) -> usize

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

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)

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

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

Reserves memory for n elements of type T.

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

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

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

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

fn finish(self) -> Buffer

Consumes this builder and returns an immutable Buffer.

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