Struct tidb_query_executors::BatchIndexScanExecutor

[+] Show declaration

pub struct BatchIndexScanExecutor<S: Storage>(ScanExecutor<S, IndexScanExecutorImpl>);

Implementations

impl BatchIndexScanExecutor<Box<dyn Storage<Statistics = ()>>>[−]

pub fn check_supported(descriptor: &IndexScan) -> Result<()>[−]

Checks whether this executor can be used.

impl<S: Storage> BatchIndexScanExecutor<S>[−]

pub fn new(
    storage: S,
    config: Arc<EvalConfig>,
    columns_info: Vec<ColumnInfo>,
    key_ranges: Vec<KeyRange>,
    primary_column_ids_len: usize,
    is_backward: bool,
    unique: bool,
    is_scanned_range_aware: bool
) -> Result<Self>

Trait Implementations

impl<S: Storage> BatchExecutor for BatchIndexScanExecutor<S>[+]

[+] Show hidden undocumented items

type StorageStats = S::Statistics

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,