Struct ScalarAndMetadata 

pub struct ScalarAndMetadata {
    pub value: ScalarValue,
    pub metadata: Option<FieldMetadata>,
}

A ScalarValue with optional FieldMetadata

Fields

value: ScalarValue

metadata: Option<FieldMetadata>

Implementations

impl ScalarAndMetadata

pub fn new(value: ScalarValue, metadata: Option<FieldMetadata>) -> Self

Create a new Literal from a scalar value with optional FieldMetadata

pub fn value(&self) -> &ScalarValue

Access the underlying ScalarValue storage

pub fn metadata(&self) -> Option<&FieldMetadata>

Access the FieldMetadata attached to this value, if any

pub fn into_inner(self) -> (ScalarValue, Option<FieldMetadata>)

Consume self and return components

pub fn cast_storage_to( &self, target_type: &DataType, ) -> Result<Self, DataFusionError>

Cast this values’s storage type

This operation assumes that if the underlying ScalarValue can be casted to a given type that any extension type represented by the metadata is also valid.

Trait Implementations

impl Clone for ScalarAndMetadata

fn clone(&self) -> ScalarAndMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarAndMetadata

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

Formats the value using the given formatter.

impl From<ScalarValue> for ScalarAndMetadata

create a new ScalarAndMetadata from a ScalarValue without any metadata

fn from(value: ScalarValue) -> Self

Converts to this type from the input type.