Struct arrow::array::PrimitiveBuilder

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

Array builder for fixed-width primitive types

Implementations

impl<T: ArrowPrimitiveType> PrimitiveBuilder<T>

pub fn new(capacity: usize) -> Self

Creates a new primitive array builder

pub fn capacity(&self) -> usize

Returns the capacity of this builder measured in slots of type T

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

Appends a value of type T into the builder

pub fn append_null(&mut self) -> Result<()>

Appends a null slot into the builder

pub fn append_option(&mut self, v: Option<T::Native>) -> Result<()>

Appends an Option<T> into the builder

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

Appends a slice of type T into the builder

pub fn append_values(
    &mut self,
    values: &[T::Native],
    is_valid: &[bool]
) -> Result<()>

Appends values from a slice of type T and a validity boolean slice

pub fn finish(&mut self) -> PrimitiveArray<T>

Builds the PrimitiveArray and reset this builder.

pub fn finish_dict(&mut self, values: ArrayRef) -> DictionaryArray<T>

Builds the DictionaryArray and reset this builder.

Trait Implementations

impl<T: ArrowPrimitiveType> ArrayBuilder for PrimitiveBuilder<T>

fn as_any(&self) -> &dyn Any

Returns the builder as a non-mutable Any reference.

fn as_any_mut(&mut self) -> &mut dyn Any

Returns the builder as a mutable Any reference.

fn into_box_any(self: Box<Self>) -> Box<dyn Any>

Returns the boxed builder as a box of Any.

fn len(&self) -> usize

Returns the number of array slots in the builder

fn is_empty(&self) -> bool

Returns whether the number of array slots is zero

fn finish(&mut self) -> ArrayRef

Builds the array and reset this builder.

impl<T: Debug + ArrowPrimitiveType> Debug for PrimitiveBuilder<T> where
    T::Native: Debug, 

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

Formats the value using the given formatter.