Struct mz_arrow_util::builder::ArrowColumn

struct ArrowColumn {
    field_name: String,
    nullable: bool,
    data_type: DataType,
    extension_type_name: String,
    inner: ColBuilder,
}

Fields

field_name: String

nullable: bool

data_type: DataType

extension_type_name: String

inner: ColBuilder

Implementations

impl ArrowColumn

fn new( field_name: String, nullable: bool, data_type: DataType, extension_type_name: String, item_capacity: usize, data_capacity: usize, ) -> Result<Self, Error>

impl ArrowColumn

fn append_datum(&mut self, datum: Datum<'_>) -> Result<(), Error>

Trait Implementations

impl ArrayBuilder for ArrowColumn

Implement the ArrayBuilder trait for ArrowColumn so that we can use an ArrowColumn as an inner-builder type in an arrow::array::builder::GenericListBuilder and an arrow::array::builder::StructBuilder and re-use our methods for appending data to the column.

fn len(&self) -> usize

Returns the number of array slots in the builder

fn finish(&mut self) -> ArrayRef

Builds the array

fn finish_cloned(&self) -> ArrayRef

Builds the array without resetting the underlying builder.

fn as_any(&self) -> &(dyn Any + 'static)

Returns the builder as a non-mutable Any reference.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

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 is_empty(&self) -> bool

Returns whether number of array slots is zero

impl Debug for ArrowColumn

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

Formats the value using the given formatter.

impl From<&ArrowColumn> for Field

fn from(col: &ArrowColumn) -> Self

Converts to this type from the input type.