Struct ConnectionProperty 

#[non_exhaustive]
pub struct ConnectionProperty {
    pub key: String,
    pub value: String,
    /* private fields */
}

A connection-level property to customize query behavior. Under JDBC, these correspond directly to connection properties passed to the DriverManager. Under ODBC, these correspond to properties in the connection string.

Currently supported connection properties:

• dataset_project_id: represents the default project for datasets that are used in the query. Setting the system variable @@dataset_project_id achieves the same behavior. For more information about system variables, see: https://cloud.google.com/bigquery/docs/reference/system-variables

• time_zone: represents the default timezone used to run the query.

• session_id: associates the query with a given session.

• query_label: associates the query with a given job label. If set, all subsequent queries in a script or session will have this label. For the format in which a you can specify a query label, see labels in the JobConfiguration resource type: https://cloud.google.com/bigquery/docs/reference/rest/v2/Job#jobconfiguration

• service_account: indicates the service account to use to run a continuous query. If set, the query job uses the service account to access Google Cloud resources. Service account access is bounded by the IAM permissions that you have granted to the service account.

Additional properties are allowed, but ignored. Specifying multiple connection properties with the same key returns an error.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

key: String

The key of the property to set.

value: String

The value of the property to set.

Implementations

impl ConnectionProperty

pub fn new() -> Self

Creates a new default instance.

pub fn set_key<T: Into<String>>(self, v: T) -> Self

Sets the value of key.

Example

let x = ConnectionProperty::new().set_key("example");

pub fn set_value<T: Into<String>>(self, v: T) -> Self

Sets the value of value.

Example

let x = ConnectionProperty::new().set_value("example");

Trait Implementations

impl Clone for ConnectionProperty

fn clone(&self) -> ConnectionProperty

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConnectionProperty

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

Formats the value using the given formatter.

impl Default for ConnectionProperty

fn default() -> ConnectionProperty

Returns the “default value” for a type.

impl Message for ConnectionProperty

fn typename() -> &'static str

The typename of this message.

impl PartialEq for ConnectionProperty

fn eq(&self, other: &ConnectionProperty) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ConnectionProperty