Struct datafusion_expr::logical_plan::display::GraphvizVisitor

pub struct GraphvizVisitor<'a, 'b> { /* private fields */ }

Formats plans for graphical display using the DOT language. This format can be visualized using software from graphviz

Implementations

impl<'a, 'b> GraphvizVisitor<'a, 'b>

pub fn new(f: &'a mut Formatter<'b>) -> Self

pub fn set_with_schema(&mut self, with_schema: bool)

Sets a flag which controls if the output schema is displayed

pub fn pre_visit_plan(&mut self, label: &str) -> Result

pub fn post_visit_plan(&mut self) -> Result

pub fn start_graph(&mut self) -> Result

pub fn end_graph(&mut self) -> Result

Trait Implementations

impl<'n, 'a, 'b> TreeNodeVisitor<'n> for GraphvizVisitor<'a, 'b>

type Node = LogicalPlan

The node type which is visitable.

fn f_down(&mut self, plan: &'n LogicalPlan) -> Result<TreeNodeRecursion>

Invoked while traversing down the tree, before any children are visited. Default implementation continues the recursion.

fn f_up(&mut self, _plan: &LogicalPlan) -> Result<TreeNodeRecursion>

Invoked while traversing up the tree after children are visited. Default implementation continues the recursion.