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

type N = LogicalPlan

The node type which is visitable.

fn pre_visit(&mut self, plan: &LogicalPlan) -> Result<VisitRecursion>

Invoked before any children of node are visited.

fn post_visit(&mut self, _plan: &LogicalPlan) -> Result<VisitRecursion>

Invoked after all children of node are visited. Default implementation does nothing.