Method get_query_plan

graphlite/src/cache/cache_manager.rs:274–306

Get cached query plan

(
        &self,
        query_hash: u64,
        optimization_level: &str,
        hints: Vec<String>,
    )

    /// Get cached query plan
    pub fn get_query_plan(
        &self,
        query_hash: u64,
        optimization_level: &str,
        hints: Vec<String>,
    ) -> Option<PlanCacheEntry> {
        if !self.config.enabled {
            return None;
        }

        let schema_version = *self.schema_version.read().unwrap();
        let key = create_plan_cache_key(
            query_hash,
            schema_version,
            optimization_level,
            hints.clone(),
        );

        if let Some(plan_entry) = self.plan_cache.get(&key) {
            self.record_event(CacheEvent::PlanCacheHit {
                key,
                saved_time_ms: plan_entry.compilation_time.as_millis() as u64,
                timestamp: Instant::now(),
            });
            Some(plan_entry)
        } else {
            self.record_event(CacheEvent::PlanCacheMiss {
                key,
                timestamp: Instant::now(),
            });
            None
        }
    }

    /// Cache compiled query plan
    pub fn cache_query_plan(