Struct GroupByOperation 

pub struct GroupByOperation<K> { /* private fields */ }

Trait Implementations

impl<K: Clone> Clone for GroupByOperation<K>

fn clone(&self) -> GroupByOperation<K>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K> Explain for GroupByOperation<K>

where K: Explain,

fn describe<'__explain>( &'__explain self, formatter: &mut ExplainFormatter<'__explain, '_>, ) -> Result

impl<K> Labeled for GroupByOperation<K>

where K: Explain,

const LABEL: &'static str = "GroupBy"

impl<I, V, K, C> LaneKernel<Indexed<I, V>, C> for GroupByOperation<K>

where I: IndexDomain, V: ValueDomain, K: ArgumentSource<Keyed<I>>, K::ValueDomain: GroupingValue, C: PartitionArity<Indexed<I, V>>,

type Output = GroupOperand<I, <<K as SourceDomain>::ValueDomain as GroupingValue>::Key, OperandHandle<Indexed<I, V>, C>>

fn execute<'a>( _graphrecord: &'a GraphRecord, values: KeyedStream<'a, I, V, C>, prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

fn estimate(&self, input: Estimate, stats: &Stats<'_>) -> Estimate

impl<K> Operation for GroupByOperation<K>

where Self: Prepare + OperationInputs + Explain,

type Scope = Lane

impl<K> OperationInputs for GroupByOperation<K>

where K: PlanIdentity + PlanInputs + 'static,

type Inputs<'__inputs, __Primary: '__inputs> = (&'__inputs __Primary, &'__inputs K)

fn inputs<'__inputs, __Primary: '__inputs>( &'__inputs self, primary: &'__inputs __Primary, ) -> Self::Inputs<'__inputs, __Primary>

impl<K> OptimizerHints for GroupByOperation<K>

fn commutes_with_filter(&self) -> bool

fn allows_limit_pushdown(&self) -> bool

fn is_volatile(&self) -> bool

fn empty_rule(&self) -> EmptyRule

impl<K> PlanIdentity for GroupByOperation<K>

where K: PlanIdentity,

fn identity_eq(&self, other: &Self) -> bool

fn identity_hash<__Hasher: Hasher>(&self, state: &mut __Hasher)

impl<K> PlanInputs for GroupByOperation<K>

where K: PlanInputs,

fn inputs(&self) -> Vec<&dyn PlanNode>

fn optimize(&self, session: &Session<'_>) -> Transformed<Self>

impl<K: Prepare> Prepare for GroupByOperation<K>

type Prepared<'a> = <K as Prepare>::Prepared<'a> where Self: 'a

fn prepare<'a>( &'a self, graphrecord: &'a GraphRecord, cache: &'a EvaluationCache<'a>, ) -> QueryResult<Self::Prepared<'a>>