Struct tidb_query_executors::interface::WithSummaryCollector

pub struct WithSummaryCollector<C, T> where
    C: ExecSummaryCollector,  {
    pub summary_collector: C,
    pub inner: T,
}

Combines an ExecSummaryCollector with another type. This inner type T typically Executor/BatchExecutor, such that WithSummaryCollector<C, T> would implement the same trait and collects the statistics into C.

Fields

summary_collector: C

inner: T

Trait Implementations

impl<C: ExecSummaryCollector + Send, T: BatchExecutor> BatchExecutor for WithSummaryCollector<C, T>

type StorageStats = T::StorageStats

fn schema(&self) -> &[FieldType]

Gets the schema of the output.

fn next_batch(&mut self, scan_rows: usize) -> BatchExecuteResult

Pulls next several rows of data (stored by column).

fn collect_exec_stats(&mut self, dest: &mut ExecuteStats)

Collects execution statistics (including but not limited to metrics and execution summaries) accumulated during execution and prepares for next collection.

fn collect_storage_stats(&mut self, dest: &mut Self::StorageStats)

Collects underlying storage statistics accumulated during execution and prepares for next collection.

fn take_scanned_range(&mut self) -> IntervalRange

fn can_be_cached(&self) -> bool

fn collect_summary(
    self,
    output_index: usize
) -> WithSummaryCollector<ExecSummaryCollectorEnabled, Self> where
    Self: Sized,