Struct Pattern 

pub struct Pattern {
    pub node: Option<MatchNode>,
    pub dependencies: Vec<Pattern>,
}

Pattern Structure

Used to match the specific structure of the planning tree. The matching criteria for the current node, as well as the patterns for the child nodes.

Fields

node: Option<MatchNode>

The matching criteria for the current node

dependencies: Vec<Pattern>

List of child node patterns

Implementations

impl Pattern

pub fn new() -> Self

Create an empty pattern (that matches any node).

pub fn with_node(node: MatchNode) -> Self

Create a pattern using the specified nodes.

pub fn new_with_name(name: &'static str) -> Self

Create a pattern using the node names.

pub fn multi(node_names: Vec<&'static str>) -> Self

Create a pattern using multiple possible node names.

pub fn with_dependency(self, dependency: Pattern) -> Self

Add child node mode

pub fn with_dependency_name(self, name: &'static str) -> Self

Use the node name to add a child node pattern.

pub fn add_dependency(&mut self, dependency: Pattern)

Add dependency pattern (variable reference version)

pub fn matches(&self, plan_node: &PlanNodeEnum) -> bool

Check whether the mode matches the given scheduled node.

pub fn with_project_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_filter_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_scan_vertices_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_get_vertices_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_limit_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_sort_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_aggregate_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_dedup_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_get_neighbors_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_traverse_matcher() -> Self

Create a pattern for matching nodes.

pub fn with_join_matcher() -> Self

Create a pattern that matches the Join nodes (matching any type of connection).

Trait Implementations

impl Clone for Pattern

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 Pattern

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

Formats the value using the given formatter.

impl Default for Pattern

fn default() -> Self

Returns the “default value” for a type.