Struct PureAggRewriter 

pub struct PureAggRewriter {
    pub pure_aggs: Vec<Expr>,
    pub next_id: usize,
}

Fields

pure_aggs: Vec<Expr>

next_id: usize

Implementations

impl PureAggRewriter

pub fn new() -> Self

Trait Implementations

impl Default for PureAggRewriter

fn default() -> Self

Returns the “default value” for a type.

impl TreeNodeRewriter for PureAggRewriter

type Node = Expr

The node type which is rewritable.

fn f_down(&mut self, node: Expr) -> Result<Transformed<Self::Node>>

Invoked while traversing down the tree before any children are rewritten. Default implementation returns the node as is and continues recursion.

fn f_up( &mut self, node: Self::Node, ) -> Result<Transformed<Self::Node>, DataFusionError>

Invoked while traversing up the tree after all children have been rewritten. Default implementation returns the node as is and continues recursion.