Struct hdbconnect::ConnectionManager

pub struct ConnectionManager { /* private fields */ }

Available on crate feature r2d2_pool only.

Implementation of r2d2’s ManageConnection.

Example

use hdbconnect::{
    ConnectionConfiguration, ConnectParams, ConnectionManager, IntoConnectParamsBuilder
};

let pool = r2d2::Pool::builder()
    .max_size(15)
    .build(ConnectionManager::with_configuration(
        "hdbsql://abcd123:2222"
            .into_connect_params_builder()?
            .with_dbuser("MEIER")
            .with_password("schlau"),
        ConnectionConfiguration::default().with_auto_commit(false),
    )?).unwrap();

let conn = pool.get().unwrap();
conn.query("select 1 from dummy")?;

Implementations

impl ConnectionManager

pub fn new<P: IntoConnectParams>(p: P) -> HdbResult<Self>

Creates a new ConnectionManager.

Errors

HdbError::Usage if not enough or inconsistent information was provided

pub fn with_configuration<P: IntoConnectParams>( p: P, c: ConnectionConfiguration, ) -> HdbResult<Self>

Creates a new ConnectionManager with provided configuration.

Errors

HdbError::Usage if not enough or inconsistent information was provided

Trait Implementations

impl Debug for ConnectionManager

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

Formats the value using the given formatter.

impl ManageConnection for ConnectionManager

type Connection = Connection

The connection type this manager deals with.

type Error = HdbError

The error type returned by Connections.

fn connect(&self) -> Result<Self::Connection, Self::Error>

Attempts to create a new connection.

fn is_valid(&self, conn: &mut Self::Connection) -> Result<(), Self::Error>

Determines if the connection is still connected to the database.

fn has_broken(&self, conn: &mut Self::Connection) -> bool

Quickly determines if the connection is no longer usable.