Struct QueryEngine 

pub struct QueryEngine { /* private fields */ }

Query engine that combines all components.

Implementations

impl QueryEngine

pub fn new() -> Self

Create a new query engine with default configuration.

pub fn with_config( optimizer_config: OptimizerConfig, cache_config: CacheConfig, ) -> Self

Create a new query engine with custom configuration.

pub fn optimizer(&self) -> &Optimizer

Get the optimizer.

pub fn executor(&mut self) -> &mut Executor

Get the executor.

pub fn cache(&self) -> &QueryCache

Get the cache.

pub async fn execute_sql(&mut self, sql: &str) -> Result<Vec<RecordBatch>>

Execute a SQL query.

pub fn explain_sql(&self, sql: &str) -> Result<ExplainPlan>

Explain a SQL query.

pub fn register_data_source( &mut self, name: String, source: Arc<dyn DataSource>, )

Register a data source.

pub fn clear_cache(&self)

Clear the query cache.

pub fn cache_statistics(&self) -> CacheStatistics

Get cache statistics.

Trait Implementations

impl Default for QueryEngine

fn default() -> Self

Returns the “default value” for a type.