Enum ScalarResult 

pub enum ScalarResult {
    Int64(i64),
    Float64(f64),
    UInt64(u64),
    OptionalInt64(Option<i64>),
    OptionalFloat64(Option<f64>),
    Null,
}

Scalar result type supporting multiple numeric types.

Used by DynAccumulator for dynamic-dispatch aggregation where the result type is determined at runtime. This enables composite aggregation (multiple aggregates per window) with mixed types.

Example

use laminar_core::operator::window::ScalarResult;

let r = ScalarResult::Float64(3.14);
assert_eq!(r.to_i64_lossy(), 3);
assert_eq!(r.to_f64_lossy(), 3.14);

Variants

Int64(i64)

64-bit signed integer

Float64(f64)

64-bit floating point

UInt64(u64)

64-bit unsigned integer

OptionalInt64(Option<i64>)

Optional 64-bit signed integer

OptionalFloat64(Option<f64>)

Optional 64-bit floating point

Null

Null / no value

Implementations

impl ScalarResult

pub fn to_i64_lossy(&self) -> i64

Converts to i64, truncating floats and saturating unsigned values.

pub fn to_f64_lossy(&self) -> f64

Converts to f64, with potential precision loss for large integers.

pub fn is_null(&self) -> bool

Returns true if this is a null or None value.

pub fn data_type(&self) -> DataType

Returns the Arrow DataType for this result.

Trait Implementations

impl Clone for ScalarResult

fn clone(&self) -> ScalarResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarResult

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

Formats the value using the given formatter.

impl PartialEq for ScalarResult

fn eq(&self, other: &ScalarResult) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ScalarResult