Struct QueryPlan 

pub struct QueryPlan {
    pub root_id: String,
    pub nodes: HashMap<String, PlanNode>,
    pub query: String,
    pub total_cost: f64,
    pub total_execution_time_ms: Option<u64>,
}

Query execution plan

Fields

root_id: String

Root node ID

nodes: HashMap<String, PlanNode>

All nodes in the plan

query: String

Query text

total_cost: f64

Total estimated cost

total_execution_time_ms: Option<u64>

Total execution time (if available)

Implementations

impl QueryPlan

pub fn new(root_id: String, query: String) -> Self

Create a new query plan

pub fn add_node(&mut self, node: PlanNode)

Add a node to the plan

pub fn root_node(&self) -> Option<&PlanNode>

Get root node

pub fn get_node(&self, id: &str) -> Option<&PlanNode>

Get node by ID

pub fn leaf_nodes(&self) -> Vec<&PlanNode>

Get all leaf nodes (nodes with no children)

pub fn execution_levels(&self) -> HashMap<String, usize>

Calculate execution levels (depth from root)

pub fn parallel_execution_groups(&self) -> Vec<Vec<String>>

Get nodes that can be executed in parallel at each level

pub fn set_total_execution_time(&mut self, time_ms: u64)

Set total execution time

Trait Implementations

impl Clone for QueryPlan

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 QueryPlan

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QueryPlan

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for QueryPlan

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.