Module datafusion_common::tree_node

This module provides common traits for visiting or rewriting tree nodes easily.

Enums

• RewriteRecursion
  Controls how the TreeNode recursion should proceed for [rewrite].
• Transformed
• VisitRecursion
  Controls how the TreeNode recursion should proceed for [visit].

Traits

• DynTreeNode
  Helper trait for implementing TreeNode that have children stored as Arc’s
• TreeNode
  Trait for tree node. It can be [ExecutionPlan], [PhysicalExpr], [LogicalPlan], [Expr], etc.
• TreeNodeRewriter
  Trait for potentially recursively transform an TreeNode node tree. When passed to TreeNode::rewrite, TreeNodeRewriter::mutate is invoked recursively on all nodes of a tree.
• TreeNodeVisitor
  Implements the visitor pattern for recursively walking TreeNodes.