Struct pg_async::PgResult

pub struct PgResult {
    pub res: *mut PGresult,
    pub rows: u32,
    pub columns: u32,
}

Fields

res: *mut PGresult

rows: u32

columns: u32

Implementations

impl PgResult

pub fn is_empty(&self) -> bool

True if there are no rows in the result.

pub fn len(&self) -> u32

Number of rows.

pub fn ftype(&self, column: u32) -> Oid

PostgreSQL internal OID number of the column type.

pub fn fname<'a>(&'a self, column: u32) -> Result<&'a str, Utf8Error>

Returns the column name associated with the given column number. Column numbers start at 0.

pub fn row(&self, row: u32) -> PgRow<'_>

pub fn iter<'a>(&'a self) -> PgResultIt<'a>

Iterator over result rows.

pub fn to_json(&self) -> Result<Json, PgFutureErr>

Converts a PostgreSQL query result into a JSON array of rows, [{$name: $value, …}, …].

pub fn deserialize<T: DeserializeOwned>(&self) -> Result<Vec<T>, PgFutureErr>

Auto-unpack results.

#[derive(Deserialize)] struct Bar {id: i64}
impl Bar {
  fn load() -> Box<Future<Item=Vec<Bar>, Error=PgFutureErr>> {
    Box::new (PGA.execute ("SELECT id FROM bars") .and_then (|pr| pr[0].deserialize()))
  }
}

Trait Implementations

impl Debug for PgResult

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

Formats the value using the given formatter.

impl Drop for PgResult

fn drop(&mut self)

Executes the destructor for this type.

impl Send for PgResult

impl Sync for PgResult