Struct SelectOperation 

pub struct SelectOperation;

Trait Implementations

impl Clone for SelectOperation

fn clone(&self) -> SelectOperation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Explain for SelectOperation

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

impl Labeled for SelectOperation

const LABEL: &'static str = "Select"

impl<E: EntityDomain> LaneKernel<Bare<EntityReference<E>>, Definite> for SelectOperation

type Output = OperandHandle<Indexed<E, Unit>, Definite>

fn execute<'a>( _graphrecord: &'a GraphRecord, value: BareStream<'a, EntityReference<E>, Definite>, _prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

fn estimate(&self, _input: Estimate, _stats: &Stats<'_>) -> Estimate

impl<E: EntityDomain, O: OrderState> LaneKernel<Bare<EntityReference<E>>, Multiple<O>> for SelectOperation

type Output = OperandHandle<Indexed<E, Unit>, Multiple<Unordered>>

fn execute<'a>( _graphrecord: &'a GraphRecord, values: BareStream<'a, EntityReference<E>, Multiple<O>>, _prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

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

impl<E: EntityDomain> LaneKernel<Bare<EntityReference<E>>, Single> for SelectOperation

type Output = OperandHandle<Indexed<E, Unit>, Single>

fn execute<'a>( _graphrecord: &'a GraphRecord, value: BareStream<'a, EntityReference<E>, Single>, _prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

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

impl<E: EntityDomain, I: IndexDomain> LaneKernel<Indexed<I, EntityReference<E>>, Definite> for SelectOperation

type Output = OperandHandle<Indexed<E, Unit>, Definite>

fn execute<'a>( _graphrecord: &'a GraphRecord, value: KeyedStream<'a, I, EntityReference<E>, Definite>, _prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

fn estimate(&self, _input: Estimate, _stats: &Stats<'_>) -> Estimate

impl<E: EntityDomain, I: IndexDomain, O: OrderState> LaneKernel<Indexed<I, EntityReference<E>>, Multiple<O>> for SelectOperation

type Output = OperandHandle<Indexed<E, Unit>, Multiple<Unordered>>

fn execute<'a>( _graphrecord: &'a GraphRecord, values: KeyedStream<'a, I, EntityReference<E>, Multiple<O>>, _prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

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

impl<E: EntityDomain, I: IndexDomain> LaneKernel<Indexed<I, EntityReference<E>>, Single> for SelectOperation

type Output = OperandHandle<Indexed<E, Unit>, Single>

fn execute<'a>( _graphrecord: &'a GraphRecord, value: KeyedStream<'a, I, EntityReference<E>, Single>, _prepared: Self::Prepared<'a>, ) -> QueryResult<<Self::Output as EvaluateOperand>::ReturnValue<'a>>

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

impl Operation for SelectOperation

where Self: Prepare + OperationInputs + Explain,

type Scope = Lane

impl OperationInputs for SelectOperation

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

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

impl OptimizerHints for SelectOperation

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 SelectOperation

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

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

impl PlanInputs for SelectOperation

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

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

impl Prepare for SelectOperation

type Prepared<'a> = ()

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