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use std::ops::DerefMut; use futures_core::{future::BoxFuture, stream::BoxStream}; use futures_util::StreamExt; use crate::{ connection::{Connect, Connection}, describe::Describe, executor::Executor, pool::Pool, Database, }; use super::PoolConnection; impl<C> Executor for Pool<C> where C: Connection + Connect<Connection = C>, { type Database = <C as Executor>::Database; fn send<'e, 'q: 'e>(&'e mut self, commands: &'q str) -> BoxFuture<'e, crate::Result<()>> { Box::pin(async move { <&Pool<C> as Executor>::send(&mut &*self, commands).await }) } fn execute<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxFuture<'e, crate::Result<u64>> { Box::pin(async move { <&Pool<C> as Executor>::execute(&mut &*self, query, args).await }) } fn fetch<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxStream<'e, crate::Result<<<C as Executor>::Database as Database>::Row>> { Box::pin(async_stream::try_stream! { let mut self_ = &*self; let mut s = <&Pool<C> as Executor>::fetch(&mut self_, query, args); while let Some(row) = s.next().await.transpose()? { yield row; } }) } fn fetch_optional<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxFuture<'e, crate::Result<Option<<<C as Executor>::Database as Database>::Row>>> { Box::pin( async move { <&Pool<C> as Executor>::fetch_optional(&mut &*self, query, args).await }, ) } fn describe<'e, 'q: 'e>( &'e mut self, query: &'q str, ) -> BoxFuture<'e, crate::Result<Describe<Self::Database>>> { Box::pin(async move { <&Pool<C> as Executor>::describe(&mut &*self, query).await }) } } impl<C> Executor for &'_ Pool<C> where C: Connection + Connect<Connection = C>, { type Database = <C as Executor>::Database; fn send<'e, 'q: 'e>(&'e mut self, commands: &'q str) -> BoxFuture<'e, crate::Result<()>> { Box::pin(async move { self.acquire().await?.send(commands).await }) } fn execute<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxFuture<'e, crate::Result<u64>> { Box::pin(async move { self.acquire().await?.execute(query, args).await }) } fn fetch<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxStream<'e, crate::Result<<<C as Executor>::Database as Database>::Row>> { Box::pin(async_stream::try_stream! { let mut live = self.acquire().await?; let mut s = live.fetch(query, args); while let Some(row) = s.next().await.transpose()? { yield row; } }) } fn fetch_optional<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxFuture<'e, crate::Result<Option<<<C as Executor>::Database as Database>::Row>>> { Box::pin(async move { self.acquire().await?.fetch_optional(query, args).await }) } fn describe<'e, 'q: 'e>( &'e mut self, query: &'q str, ) -> BoxFuture<'e, crate::Result<Describe<Self::Database>>> { Box::pin(async move { self.acquire().await?.describe(query).await }) } } impl<C> Executor for PoolConnection<C> where C: Connection + Connect<Connection = C>, { type Database = <C as Executor>::Database; fn send<'e, 'q: 'e>(&'e mut self, commands: &'q str) -> BoxFuture<'e, crate::Result<()>> { self.deref_mut().send(commands) } fn execute<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxFuture<'e, crate::Result<u64>> { self.deref_mut().execute(query, args) } fn fetch<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxStream<'e, crate::Result<<<C as Executor>::Database as Database>::Row>> { self.deref_mut().fetch(query, args) } fn fetch_optional<'e, 'q: 'e>( &'e mut self, query: &'q str, args: <<C as Executor>::Database as Database>::Arguments, ) -> BoxFuture<'e, crate::Result<Option<<<C as Executor>::Database as Database>::Row>>> { self.deref_mut().fetch_optional(query, args) } fn describe<'e, 'q: 'e>( &'e mut self, query: &'q str, ) -> BoxFuture<'e, crate::Result<Describe<Self::Database>>> { self.deref_mut().describe(query) } }