Struct Out

pub struct Out<'a, T>(pub &'a mut T);

Use this to warp a mutable reference to an OutputParameter. This will cause the argument to be considered an output parameter only. Without this wrapper it would be considered an input parameter. You can use InOut if you want to indicate that the argument is an input and an output parameter.

Example

use odbc_api::{Environment, Out, InOut, Nullable, ConnectionOptions};

let env = Environment::new()?;

let mut conn = env.connect(
    "YourDatabase", "SA", "My@Test@Password1",
    ConnectionOptions::default(),
)?;

let mut ret = Nullable::<i32>::null();
let mut param = Nullable::new(7);

conn.execute(
    "{? = call TestParam(?)}",
    (Out(&mut ret), InOut(&mut param)))?;

Tuple Fields

0: &'a mut T

Trait Implementations

impl<'a, T> ParameterTupleElement for Out<'a, T>

where T: OutputParameter,

Mutable references wrapped in Out are bound as output parameters.

unsafe fn bind_to( &mut self, parameter_number: u16, stmt: &mut impl Statement, ) -> Result<(), Error>

Bind the parameter in question to a specific parameter_number.