Trait datafusion::scalar::ScalarType

pub trait ScalarType<T: ArrowNativeType> {
    fn scalar(r: Option<T>) -> ScalarValue;
}

Trait used to map a NativeTime to a ScalarType.

Required methods

fn scalar(r: Option<T>) -> ScalarValue

returns a scalar from an optional T

Implementations on Foreign Types

impl ScalarType<f32> for Float32Type

fn scalar(r: Option<f32>) -> ScalarValue

impl ScalarType<i64> for TimestampSecondType

fn scalar(r: Option<i64>) -> ScalarValue

impl ScalarType<i64> for TimestampMillisecondType

fn scalar(r: Option<i64>) -> ScalarValue

impl ScalarType<i64> for TimestampMicrosecondType

fn scalar(r: Option<i64>) -> ScalarValue

impl ScalarType<i64> for TimestampNanosecondType

fn scalar(r: Option<i64>) -> ScalarValue

Implementors