Struct oracle::Connector

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pub struct Connector { /* private fields */ }

Expand description

Builder data type to create Connection.

When a connection can be established only with username, password and connect string, use Connection::connect instead.

Implementations§

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impl Connector

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pub fn new<U, P, C>(username: U, password: P, connect_string: C) -> Connector
where U: Into<String>, P: Into<String>, C: Into<String>,

Create a connector

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pub fn privilege(&mut self, privilege: Privilege) -> &mut Connector

Set administrative privilege.

§Examples

// connect system/manager as sysdba
let conn = Connector::new("system", "manager", "")
    .privilege(Privilege::Sysdba)
    .connect()?;

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pub fn external_auth(&mut self, b: bool) -> &mut Connector

Uses external authentication such as OS authentication.

§Examples

let conn = Connector::new("", "", "")
    .external_auth(true)
    .connect()?;

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pub fn prelim_auth(&mut self, b: bool) -> &mut Connector

Sets prelim auth mode to connect to an idle instance.

See starting up a database.

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pub fn new_password(&mut self, password: P) -> &mut Connector
where P: Into<String>,

Sets new password during establishing a connection.

When a password is expired, you cannot connect to the user. A new password must be set by other user or set during establishing a connection.

§Examples

Connect to user scott with password tiger. If the password is expired, set a new password jaguar.

let conn = match Connection::connect("scott", "tiger", "") {
    Ok(conn) => conn,
    Err(Error::OciError(dberr)) if dberr.code() == 28001 => {
        // ORA-28001: the password has expired
        Connector::new("scott", "tiger", "")
            .new_password("jaguar")
            .connect()?
    }
    Err(err) => return Err(err),
};

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pub fn purity(&mut self, purity: Purity) -> &mut Connector

Sets session purity specifying whether an application can reuse a pooled session (Purity::Self_) or must use a new session (Purity::New) from DRCP pooled sessions.

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pub fn connection_class<S>(&mut self, connection_class: S) -> &mut Connector
where S: Into<String>,

Sets a connection class to restrict sharing DRCP pooled sessions.

See here for more detail.

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pub fn app_context<T1, T2, T3>( &mut self, namespace: T1, name: T2, value: T3 ) -> &mut Connector
where T1: Into<String>, T2: Into<String>, T3: Into<String>,

Appends an application context.

See Oracle manual

This is same with DBMS_SESSION.SET_CONTEXT but this can set application contexts before a connection is established.

§Examples

let conn = Connector::new(username, password, connect_string)
              .app_context("CLIENTCONTEXT", "foo", "bar")
              .app_context("CLIENTCONTEXT", "baz", "qux")
              .connect()?;
let val = conn.query_row_as::<String>("select sys_context('CLIENTCONTEXT', 'foo') from dual", &[])?;
assert_eq!(val, "bar");
let val = conn.query_row_as::<String>("select sys_context('CLIENTCONTEXT', 'baz') from dual", &[])?;
assert_eq!(val, "qux");

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pub fn events(&mut self, b: bool) -> &mut Connector

Reserved for when advanced queuing (AQ) or continuous query notification (CQN) is supported.

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pub fn edition<S>(&mut self, edition: S) -> &mut Connector
where S: Into<String>,

Specifies edition of Edition-Based Redefinition.

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pub fn driver_name<S>(&mut self, driver_name: S) -> &mut Connector
where S: Into<String>,

Sets the driver name displayed in V$SESSION_CONNECT_INFO.CLIENT_DRIVER.

The default value is “rust-oracle : version number”. Only the first 8 chracters “rust-ora” are displayed when the Oracle server version is lower than 12.0.1.2.

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