Struct BulkSqlContext 

pub struct BulkSqlContext<'connection> { /* private fields */ }

App SQL inside one bulk write (§4): it changes device-local tables alone, and may read any table app SQL reads. Returning an error rolls back every statement. This borrowed context cannot change the transaction, access coven’s tables or write a synced one.

Implementations

impl<'connection> BulkSqlContext<'connection>

pub fn execute<P>(&self, sql: &str, params: P) -> Result<usize, Error>

where P: Params,

Execute one app statement with parameters.

pub fn execute_batch(&self, sql: &str) -> Result<(), Error>

Execute app statements within this write’s transaction.

pub fn query_row<T, P, F>( &self, sql: &str, params: P, map: F, ) -> Result<T, Error>

where P: Params, F: FnOnce(&Row<'_>) -> Result<T, Error>,

Map one app row, including changes already made by this write.

pub fn query<T, P, F>( &self, sql: &str, params: P, map: F, ) -> Result<Vec<T>, Error>

where P: Params, F: FnMut(&Row<'_>) -> Result<T, Error>,

Map all app rows produced by a query within this write.

Trait Implementations

impl SqlRead for BulkSqlContext<'_>

fn query_row<T, P, F>(&self, sql: &str, params: P, map: F) -> Result<T, Error>

where P: Params, F: FnOnce(&Row<'_>) -> Result<T, Error>,

Map the first result row.

fn query<T, P, F>(&self, sql: &str, params: P, map: F) -> Result<Vec<T>, Error>

where P: Params, F: FnMut(&Row<'_>) -> Result<T, Error>,

Map all result rows.