Struct QueryPlan 

pub struct QueryPlan {
    pub nodes: HashMap<String, QueryNode>,
    pub roots: Vec<String>,
    pub execution_phases: Vec<Vec<String>>,
    pub max_depth: usize,
    pub total_estimated_rows: usize,
    pub metadata: HashMap<String, Value>,
}

Query execution plan for optimized loading

Fields

nodes: HashMap<String, QueryNode>

All nodes in the plan, keyed by ID

roots: Vec<String>

Root node IDs (entry points)

execution_phases: Vec<Vec<String>>

Execution phases (nodes that can run in parallel)

max_depth: usize

Maximum depth of the plan

total_estimated_rows: usize

Total estimated rows

metadata: HashMap<String, Value>

Plan metadata

Implementations

impl QueryPlan

pub fn new() -> Self

Create an empty query plan

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

Add a node to the plan

pub fn build_execution_phases(&mut self) -> OrmResult<()>

Build execution phases (groups of nodes that can run in parallel)

pub fn validate(&self) -> OrmResult<()>

Validate the query plan for consistency

pub fn nodes_at_depth(&self, depth: usize) -> Vec<&QueryNode>

Get nodes at a specific depth

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

Get all leaf nodes

pub fn complexity_score(&self) -> f64

Calculate plan complexity score

pub fn add_metadata(&mut self, key: String, value: Value)

Add metadata to the plan

pub fn statistics(&self) -> PlanStatistics

Get plan statistics

Trait Implementations

impl Debug for QueryPlan

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

Formats the value using the given formatter.

impl Default for QueryPlan

fn default() -> Self

Returns the “default value” for a type.