Trait QuerySession 

pub trait QuerySession:
    Send
    + Sync
    + Clone {
    // Required methods
    fn as_session(&self) -> &SessionContext;
    fn capabilities(&self) -> &[SessionCapability];
    fn sql<'life0, 'life1, 'async_trait>(
        &'life0 self,
        sql: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<DataFrame>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}

Abstraction over a query-capable DataFusion session.

Required Methods

fn as_session(&self) -> &SessionContext

Access the underlying SessionContext for registration or low-level control.

fn capabilities(&self) -> &[SessionCapability]

fn sql<'life0, 'life1, 'async_trait>( &'life0 self, sql: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<DataFrame>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Execute SQL and return a DataFrame for streaming.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl QuerySession for SessionContext

fn as_session(&self) -> &SessionContext

fn capabilities(&self) -> &[SessionCapability]

fn sql<'life0, 'life1, 'async_trait>( &'life0 self, sql: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<DataFrame>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Implementors

impl QuerySession for QuerySessionContext