Struct TransformResult 

pub struct TransformResult {
    pub erase_curr: bool,
    pub erase_all: bool,
    pub new_nodes: Vec<PlanNodeEnum>,
    pub new_dependencies: Vec<usize>,
    pub has_folded: bool,
}

Record the results after the application of the rule rewriting rules.

Fields

erase_curr: bool

Should the current node be deleted?

erase_all: bool

Should all related nodes be deleted?

new_nodes: Vec<PlanNodeEnum>

New list of replacement plan nodes

new_dependencies: Vec<usize>

New dependencies

has_folded: bool

Whether the rule folded constant expressions into literals.

Implementations

impl TransformResult

pub fn new() -> Self

Create a new conversion result.

pub fn with_erase_curr(self, erase_curr: bool) -> Self

Set whether to delete the current node.

pub fn with_erase_all(self, erase_all: bool) -> Self

Set whether to delete all nodes.

pub fn add_new_node(&mut self, node: PlanNodeEnum)

Add a new planning node

pub fn add_new_dependency(&mut self, dep_id: usize)

Add a new dependency

pub fn with_erased(self) -> Self

Set the deleted marker

pub fn mark_folded(&mut self)

Mark that the rule folded constant expressions into literals.

pub fn has_new_nodes(&self) -> bool

Check whether there are any new nodes.

pub fn first_new_node(&self) -> Option<&PlanNodeEnum>

Retrieve the first new node (if it exists).

Trait Implementations

impl Clone for TransformResult

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransformResult

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

Formats the value using the given formatter.

impl Default for TransformResult

fn default() -> Self

Returns the “default value” for a type.