Struct QueryOptimizer 

pub struct QueryOptimizer { /* private fields */ }

Query optimizer for validation constraints.

Implementations

impl QueryOptimizer

pub fn new() -> Self

Creates a new query optimizer.

pub async fn optimize_and_execute( &mut self, checks: &[Check], ctx: &TermContext, ) -> Result<HashMap<String, Vec<ConstraintResult>>, TermError>

Optimizes and executes a set of checks.

This method:

1. Analyzes all constraints to identify optimization opportunities
2. Groups constraints by table and compatible operations
3. Combines queries to minimize table scans
4. Executes optimized queries and maps results back to constraints

Arguments

• checks - The validation checks to optimize and execute
• ctx - The Term context containing the DataFusion session

Returns

A map of constraint names to their results.

pub async fn explain_plan( &mut self, checks: &[Check], ctx: &TermContext, ) -> Result<String, TermError>

Explains the query optimization plan for debugging.

This provides detailed information about:

• Which constraints were grouped together
• What optimizations were applied
• The resulting query plans

Trait Implementations

impl Debug for QueryOptimizer

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

Formats the value using the given formatter.

impl Default for QueryOptimizer

fn default() -> Self

Returns the “default value” for a type.