Struct Postgres 

pub struct Postgres { /* private fields */ }

Implementations

impl Postgres

pub fn connect(url: &str, tls: Option<&dyn Tls>) -> Result<Postgres, String>

tls is None in ironwork’s own build, which then connects without TLS.

pub fn source(&self) -> &str

The server and database, as a recording’s header names them.

Trait Implementations

impl Database for Postgres

fn execute(&mut self, call: &Call<'_>) -> Result<Outcome, Abandoned>

Two rows are enough to tell a SELECT INTO’s one row from its too many.

fn prepare(&mut self, call: &Call<'_>) -> Result<Outcome, Abandoned>

PostgreSQL parses the statement string as Db2’s PREPARE does, so its errors come at PREPARE, and describes its result columns.

fn insert_rows( &mut self, call: &Call<'_>, rows: &[Vec<Value>], atomic: bool, ) -> Result<Outcome, Abandoned>

ATOMIC inserts every row under the call’s one savepoint, so a failure undoes them all; NOT ATOMIC gives each row its own, as Db2 keeps the rows that went in (numeric::assumptions::NOT_ATOMIC_SUMMARY).

fn open(&mut self, call: &Call<'_>) -> Result<Outcome, Abandoned>

fn fetch(&mut self, call: &Call<'_>) -> Result<Outcome, Abandoned>

One row, or no row at the end.

fn fetch_rows( &mut self, call: &Call<'_>, rows: u32, ) -> Result<Outcome, Abandoned>

Up to rows rows for a rowset FETCH, fewer at the end.

fn close(&mut self, call: &Call<'_>) -> Result<Outcome, Abandoned>

fn commit(&mut self, _: &Call<'_>) -> Result<Outcome, Abandoned>

fn rollback(&mut self, _: &Call<'_>) -> Result<Outcome, Abandoned>

fn close_all(&mut self) -> Result<(), Abandoned>

Closes every cursor, held ones too, as the end of a CICS task does, so the next task on the same connection finds none open. A backend without cursors of its own has nothing to close.

fn call(&mut self, call: &Call<'_>) -> Result<Outcome, Abandoned>

CALL of a stored procedure, which a backend that runs none refuses; the answer’s parameters give the arguments as the procedure returns them (numeric::assumptions::CALL_FROM_A_RECORDING).