Struct ExportBuilder

pub struct ExportBuilder<'a> { /* private fields */ }

A builder for an ETL EXPORT job.

Calling [build().await] will ouput a future that drives the EXPORT query execution and a Vec<ExaReader> which must be concurrently used to read data from Exasol.

Implementations

impl<'a> ExportBuilder<'a>

pub fn new(source: ExportSource<'a>) -> Self

pub async fn build<'c>( &'a self, con: &'c mut ExaConnection, ) -> Result<(BoxFuture<'c, Result<ExaQueryResult>>, Vec<ExaExport>)>

where 'c: 'a,

Builds the EXPORT job.

This implies submitting the EXPORT query. The output will be a future to await the result of the job and the workers that can be used for ETL IO.

Errors

Returns an error if the job could not be built and submitted.

pub fn num_readers(&mut self, num_readers: usize) -> &mut Self

Sets the number of reader jobs that will be started.

If set to 0, then as many as possible will be used (one per node). Providing a number bigger than the number of nodes is the same as providing 0.

pub fn compression(&mut self, enabled: bool) -> &mut Self

pub fn comment(&mut self, comment: &'a str) -> &mut Self

pub fn encoding(&mut self, encoding: &'a str) -> &mut Self

pub fn null(&mut self, null: &'a str) -> &mut Self

pub fn row_separator(&mut self, separator: RowSeparator) -> &mut Self

pub fn column_separator(&mut self, separator: &'a str) -> &mut Self

pub fn column_delimiter(&mut self, delimiter: &'a str) -> &mut Self

pub fn with_column_names(&mut self, flag: bool) -> &mut Self

Trait Implementations

impl<'a> Debug for ExportBuilder<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.