Trait Client 

pub trait Client: Send + Sync {
    type Error: Error + Send + Sync + 'static;
    type Row: Row;

    // Required methods
    fn query(
        &self,
        sql: &str,
        params: &[&dyn ToSqlParam],
    ) -> impl Future<Output = Result<Vec<Self::Row>, Self::Error>> + Send;
    fn execute(
        &self,
        sql: &str,
        params: &[&dyn ToSqlParam],
    ) -> impl Future<Output = Result<u64, Self::Error>> + Send;
}

Trait for executing SQL queries against a database. Uses impl Future instead of async_trait to avoid proc macro compile overhead.

Required Associated Types

type Error: Error + Send + Sync + 'static

type Row: Row

Required Methods

fn query( &self, sql: &str, params: &[&dyn ToSqlParam], ) -> impl Future<Output = Result<Vec<Self::Row>, Self::Error>> + Send

Execute a query that returns rows.

fn execute( &self, sql: &str, params: &[&dyn ToSqlParam], ) -> impl Future<Output = Result<u64, Self::Error>> + Send

Execute a statement that returns the number of affected rows.

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.

Implementors

impl Client for PgClient

type Error = Error

type Row = PgRow