Struct ReadPlanTree 

pub struct ReadPlanTree {
    pub node: ReadPlan,
    pub forest: Vec<ReadPlanTree>,
}

A tree of read plans (rose tree)

Each node represents a table/view to read from, with children representing embedded (joined) relations.

Fields

node: ReadPlan

This node’s read plan

forest: Vec<ReadPlanTree>

Child read plans (embedded relations)

Implementations

impl ReadPlanTree

pub fn leaf(node: ReadPlan) -> Self

Create a new tree with no children

pub fn with_children(node: ReadPlan, forest: Vec<ReadPlanTree>) -> Self

Create a tree with children

pub fn node_mut(&mut self) -> &mut ReadPlan

Get a mutable reference to the root node

pub fn children(&self) -> &[ReadPlanTree]

Get a reference to the children

pub fn children_mut(&mut self) -> &mut Vec<ReadPlanTree>

Get mutable references to the children

pub fn iter(&self) -> ReadPlanTreeIter<'_>

Depth-first iteration over all nodes

pub fn node_count(&self) -> usize

Get the total number of nodes in the tree

pub fn max_depth(&self) -> usize

Get the maximum depth of the tree

Trait Implementations

impl Clone for ReadPlanTree

fn clone(&self) -> ReadPlanTree

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadPlanTree

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

Formats the value using the given formatter.