Struct Session 

pub struct Session {
    pub(crate) catalog: RwLock<String>,
    pub(crate) mutable_inner: Arc<RwLock<MutableInner>>,
    pub(crate) conn_info: ConnInfo,
    pub(crate) configuration_variables: Arc<ConfigurationVariables>,
    pub(crate) process_id: u32,
}

Session for persistent connection such as MySQL, PostgreSQL etc.

Fields

catalog: RwLock<String>

mutable_inner: Arc<RwLock<MutableInner>>

conn_info: ConnInfo

configuration_variables: Arc<ConfigurationVariables>

process_id: u32

Implementations

impl Session

pub fn new( addr: Option<SocketAddr>, channel: Channel, configuration_variables: ConfigurationVariables, process_id: u32, ) -> Self

pub fn new_query_context(&self) -> QueryContextRef

pub fn get_cursor(&self, name: &str) -> Option<Arc<RecordBatchStreamCursor>>

Returns the cursor with the given name, if it exists.

Cursors are stored in the session’s mutable inner data and shared across all query contexts created from this session.

pub fn conn_info(&self) -> &ConnInfo

pub fn timezone(&self) -> Timezone

pub fn read_preference(&self) -> ReadPreference

pub fn set_timezone(&self, tz: Timezone)

pub fn set_read_preference(&self, read_preference: ReadPreference)

pub fn user_info(&self) -> UserInfoRef

pub fn set_user_info(&self, user_info: UserInfoRef)

pub fn set_catalog(&self, catalog: String)

pub fn catalog(&self) -> String

pub fn schema(&self) -> String

pub fn set_schema(&self, schema: String)

pub fn get_db_string(&self) -> String

pub fn process_id(&self) -> u32

pub fn warnings_count(&self) -> usize

pub fn warnings(&self) -> Vec<String>

pub fn add_warning(&self, warning: String)

Add a warning message. If the limit is reached, discard the oldest warning.

pub fn clear_warnings(&self)

Trait Implementations

impl Debug for Session

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

Formats the value using the given formatter.