Struct ChildIndexOperation 

pub struct ChildIndexOperation;

Trait Implementations

impl Clone for ChildIndexOperation

fn clone(&self) -> ChildIndexOperation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<P: IndexDomain, C: IndexDomain> ElementKernel<Bare<IndexValue<ExpandedIndex<P, C>>>> for ChildIndexOperation

type Emission = Preserving

type OutShape = Bare<IndexValue<C>>

fn pipeline<'a>( _graphrecord: &'a GraphRecord, _prepared: Self::Prepared<'a>, ) -> QueryResult<ElementPipeline<'a, Bare<IndexValue<ExpandedIndex<P, C>>>, Self>>

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

impl<I: IndexDomain, P: IndexDomain, C: IndexDomain> ElementKernel<Indexed<I, IndexValue<ExpandedIndex<P, C>>>> for ChildIndexOperation

type Emission = Preserving

type OutShape = Indexed<I, IndexValue<C>>

fn pipeline<'a>( _graphrecord: &'a GraphRecord, _prepared: Self::Prepared<'a>, ) -> QueryResult<ElementPipeline<'a, Indexed<I, IndexValue<ExpandedIndex<P, C>>>, Self>>

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

impl Explain for ChildIndexOperation

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

impl Labeled for ChildIndexOperation

const LABEL: &'static str = "ChildIndex"

impl Operation for ChildIndexOperation

where Self: Prepare + OperationInputs + Explain,

type Scope = Element

impl OperationInputs for ChildIndexOperation

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

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

impl OptimizerHints for ChildIndexOperation

fn commutes_with_filter(&self) -> bool

fn allows_limit_pushdown(&self) -> bool

fn is_volatile(&self) -> bool

fn empty_rule(&self) -> EmptyRule

impl PlanIdentity for ChildIndexOperation

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

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

impl PlanInputs for ChildIndexOperation

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

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

impl Prepare for ChildIndexOperation

type Prepared<'a> = ()

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