Trait RangeScan 

pub trait RangeScan: Send {
    // Required method
    fn next_batch(
        &mut self,
        max_items: usize,
    ) -> impl Future<Output = Result<RangeScanBatch, String>> + Send;
}

Owned pull-based range cursor for query RPCs.

Implementations own any state needed to produce batches, allowing query handlers to pull rows lazily without borrowing the engine.

Required Methods

fn next_batch( &mut self, max_items: usize, ) -> impl Future<Output = Result<RangeScanBatch, String>> + Send

Pull up to max_items rows. Returning an empty rows batch marks EOF. EOF may carry non-empty extra with final query metadata. extra is emitted with the response frame built from the same batch.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors