Struct arrow2::array::growable::GrowableUnion

pub struct GrowableUnion<'a> { /* private fields */ }

Concrete Growable for the UnionArray.

Implementations

impl<'a> GrowableUnion<'a>

pub fn new(arrays: Vec<&'a UnionArray>, capacity: usize) -> Self

Creates a new GrowableUnion bound to arrays with a pre-allocated capacity.

Panics

Panics iff

• arrays is empty.
• any of the arrays has a different

Trait Implementations

impl<'a> From<GrowableUnion<'a>> for UnionArray

fn from(val: GrowableUnion<'a>) -> Self

Converts to this type from the input type.

impl<'a> Growable<'a> for GrowableUnion<'a>

fn extend(&mut self, index: usize, start: usize, len: usize)

Extends this Growable with elements from the bounded Array at index index from a slice starting at start and length len.

fn extend_validity(&mut self, _additional: usize)

Extends this Growable with null elements, disregarding the bound arrays

fn len(&self) -> usize

The current length of the Growable.

fn as_arc(&mut self) -> Arc<dyn Array>

Converts this Growable to an Arc<dyn Array>, thereby finishing the mutation. Self will be empty after such operation.

fn as_box(&mut self) -> Box<dyn Array>

Converts this Growable to an Box<dyn Array>, thereby finishing the mutation. Self will be empty after such operation