Struct RelNodeContext

pub struct RelNodeContext {
    pub group_id: GroupId,
    pub expr_id: ExprId,
    pub children_group_ids: Vec<GroupId>,
}

RelNode only contains the representation of the plan nodes. Sometimes, we need more context, i.e., group id and expr id, during the optimization phase. All these information are collected in this struct.

Fields

group_id: GroupId

expr_id: ExprId

children_group_ids: Vec<GroupId>

Trait Implementations

impl Clone for RelNodeContext

fn clone(&self) -> RelNodeContext

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RelNodeContext

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

Formats the value using the given formatter.

impl Default for RelNodeContext

fn default() -> RelNodeContext

Returns the “default value” for a type.

impl Hash for RelNodeContext

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for RelNodeContext

fn cmp(&self, other: &RelNodeContext) -> 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 PartialEq for RelNodeContext

fn eq(&self, other: &RelNodeContext) -> 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 RelNodeContext

fn partial_cmp(&self, other: &RelNodeContext) -> 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 Eq for RelNodeContext

impl StructuralPartialEq for RelNodeContext