Struct PlanNode 

pub struct PlanNode {
    pub id: PlanNodeId,
    pub kind: PlanOperator,
    pub inputs: Vec<PlanInput>,
    pub outputs: Vec<PlanNodeId>,
    pub schema: Vec<PlanField>,
    pub predicates: Vec<PlanExpression>,
    pub projections: Vec<PlanExpression>,
    pub cost: Option<f64>,
    pub cardinality: Option<u64>,
    pub chosen_index: Option<String>,
    pub metadata: PlanNodeMetadata,
}

Planner node with annotations used to describe how operators compose.

Fields

id: PlanNodeId

kind: PlanOperator

inputs: Vec<PlanInput>

outputs: Vec<PlanNodeId>

schema: Vec<PlanField>

predicates: Vec<PlanExpression>

projections: Vec<PlanExpression>

cost: Option<f64>

cardinality: Option<u64>

chosen_index: Option<String>

metadata: PlanNodeMetadata

Implementations

impl PlanNode

pub fn new(id: PlanNodeId, kind: PlanOperator) -> PlanNode

pub fn add_field(&mut self, field: PlanField)

pub fn add_predicate(&mut self, expr: PlanExpression)

pub fn add_projection(&mut self, expr: PlanExpression)

Trait Implementations

impl Clone for PlanNode

fn clone(&self) -> PlanNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlanNode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PlanNode

fn deserialize<__D>( __deserializer: __D, ) -> Result<PlanNode, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PlanNode

fn eq(&self, other: &PlanNode) -> 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 Serialize for PlanNode

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PlanNode