Struct DuckDbConnectionManager 

pub struct DuckDbConnectionManager { /* private fields */ }

An r2d2::ManageConnection that creates connections from a shared Database.

Implementations

impl DuckDbConnectionManager

pub fn new(database: Database) -> DuckDbConnectionManager

Creates a manager over an already-open Database.

pub fn file<P: AsRef<Path>>(path: P) -> Result<DuckDbConnectionManager>

Creates a manager backed by a file-based database.

Errors

Returns an error if the database cannot be opened.

pub fn file_with_flags<P: AsRef<Path>>( path: P, config: Config, ) -> Result<DuckDbConnectionManager>

Creates a manager backed by a file-based database with additional config.

Errors

Returns an error if the database cannot be opened.

pub fn memory() -> Result<DuckDbConnectionManager>

Creates a manager backed by a shared in-memory database.

All connections checked out of a pool built from this manager observe the same in-memory data.

Errors

Returns an error if the database cannot be opened.

pub fn memory_with_flags(config: Config) -> Result<DuckDbConnectionManager>

Creates a manager backed by a shared in-memory database with additional config.

Errors

Returns an error if the database cannot be opened.

pub fn database(&self) -> &Database

Returns the shared Database backing this manager.

Trait Implementations

impl Clone for DuckDbConnectionManager

fn clone(&self) -> DuckDbConnectionManager

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DuckDbConnectionManager

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

Formats the value using the given formatter.

impl ManageConnection for DuckDbConnectionManager

type Connection = Connection

The connection type this manager deals with.

type Error = Error

The error type returned by Connections.

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

Attempts to create a new connection.

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

Determines if the connection is still connected to the database.

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

Quickly determines if the connection is no longer usable.