Trait convergence::engine::Engine

pub trait Engine: Send + Sync + 'static {
    type PortalType: Portal;

    // Required methods
    fn prepare<'life0, 'life1, 'async_trait>(
        &'life0 mut self,
        stmt: &'life1 Statement
    ) -> Pin<Box<dyn Future<Output = Result<Vec<FieldDescription>, ErrorResponse>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn create_portal<'life0, 'life1, 'async_trait>(
        &'life0 mut self,
        stmt: &'life1 Statement
    ) -> Pin<Box<dyn Future<Output = Result<Self::PortalType, ErrorResponse>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}

The engine trait is the core of the convergence crate, and is responsible for dispatching most SQL operations.

Each connection is allocated an Engine instance, which it uses to prepare statements, create portals, etc.

Required Associated Types

type PortalType: Portal

The Portal implementation used by Engine::create_portal.

Required Methods

fn prepare<'life0, 'life1, 'async_trait>( &'life0 mut self, stmt: &'life1 Statement ) -> Pin<Box<dyn Future<Output = Result<Vec<FieldDescription>, ErrorResponse>> + Send + 'async_trait>>

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

Prepares a statement, returning a vector of field descriptions for the final statement result.

fn create_portal<'life0, 'life1, 'async_trait>( &'life0 mut self, stmt: &'life1 Statement ) -> Pin<Box<dyn Future<Output = Result<Self::PortalType, ErrorResponse>> + Send + 'async_trait>>

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

Creates a new portal for the given statement.

Implementors