Trait datafusion_common::tree_node::ConcreteTreeNode

pub trait ConcreteTreeNode: Sized {
    // Required methods
    fn children(&self) -> &[Self];
    fn take_children(self) -> (Self, Vec<Self>);
    fn with_new_children(self, children: Vec<Self>) -> Result<Self>;
}

Instead of implementing TreeNode, it’s recommended to implement a ConcreteTreeNode for trees that contain nodes with payloads. This approach ensures safe execution of algorithms involving payloads, by enforcing rules for detaching and reattaching child nodes.

Required Methods

fn children(&self) -> &[Self]

Provides read-only access to child nodes.

fn take_children(self) -> (Self, Vec<Self>)

Detaches the node from its children, returning the node itself and its detached children.

fn with_new_children(self, children: Vec<Self>) -> Result<Self>

Reattaches updated child nodes to the node, returning the updated node.

Object Safety

This trait is not object safe.

Implementors