Struct StructArrayBuilder 

pub(crate) struct StructArrayBuilder {
    fields: Vec<FieldRef>,
    arrays: Vec<ArrayRef>,
    nulls: Option<NullBuffer>,
}

Builds struct arrays from component fields

TODO: move to arrow crate

Fields

fields: Vec<FieldRef>

arrays: Vec<ArrayRef>

nulls: Option<NullBuffer>

Implementations

impl StructArrayBuilder

pub fn new() -> Self

pub fn with_field( self, field_name: &str, array: ArrayRef, nullable: bool, ) -> Self

Add an array to this struct array as a field with the specified name.

pub fn with_field_ref(self, field: FieldRef, array: ArrayRef) -> Self

Add an array to this struct array using a caller-supplied [FieldRef].

Use this when the field carries metadata (e.g. an extension type) that would be lost if the field were synthesized from the array’s data type alone.

pub fn with_nulls(self, nulls: NullBuffer) -> Self

Set the null buffer for this struct array.

pub fn build(self) -> StructArray

Trait Implementations

impl Clone for StructArrayBuilder

fn clone(&self) -> StructArrayBuilder

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StructArrayBuilder

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

Formats the value using the given formatter.

impl Default for StructArrayBuilder

fn default() -> StructArrayBuilder

Returns the “default value” for a type.