Struct CustomElement 

struct CustomElement<'a> {
    branch_idx: usize,
    value: ScalarValue,
    ordering: Vec<ScalarValue>,
    sort_options: &'a [SortOptions],
}

This is a wrapper struct to be able to correctly merge ARRAY_AGG data from multiple partitions using BinaryHeap. When used inside BinaryHeap, this struct returns smallest CustomElement, where smallest is determined by ordering values (Vec<ScalarValue>) according to sort_options.

Fields

branch_idx: usize

Stores the partition this entry came from

value: ScalarValue

Values to merge

ordering: Vec<ScalarValue>

sort_options: &'a [SortOptions]

Options defining the ordering semantics

Implementations

impl<'a> CustomElement<'a>

fn new( branch_idx: usize, value: ScalarValue, ordering: Vec<ScalarValue>, sort_options: &'a [SortOptions], ) -> Self

fn ordering( &self, current: &[ScalarValue], target: &[ScalarValue], ) -> Result<Ordering>

Trait Implementations

impl<'a> Debug for CustomElement<'a>

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

Formats the value using the given formatter.

impl Ord for CustomElement<'_>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a> PartialEq for CustomElement<'a>

fn eq(&self, other: &CustomElement<'a>) -> 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 PartialOrd for CustomElement<'_>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> Eq for CustomElement<'a>

impl<'a> StructuralPartialEq for CustomElement<'a>