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use r2d2;
use std::cell::RefCell;
use crate::cluster::{GetCompressor, GetConnection};
use crate::error;
use crate::frame::{Frame, IntoBytes};
use crate::transport::CDRSTransport;
use crate::types::CBytesShort;
use super::utils::{prepare_flags, send_frame};
pub type PreparedQuery = CBytesShort;
pub trait PrepareExecutor<
T: CDRSTransport + 'static,
M: r2d2::ManageConnection<Connection = RefCell<T>, Error = error::Error> + Sized,
>: GetConnection<T, M> + GetCompressor<'static>
{
fn prepare_tw<Q: ToString>(
&self,
query: Q,
with_tracing: bool,
with_warnings: bool,
) -> error::Result<PreparedQuery>
where
Self: Sized,
{
let flags = prepare_flags(with_tracing, with_warnings);
let query_frame = Frame::new_req_prepare(query.to_string(), flags).into_cbytes();
send_frame(self, query_frame)
.and_then(|response| response.get_body())
.and_then(|body| {
Ok(body
.into_prepared()
.expect("CDRS BUG: cannot convert frame into prepared")
.id)
})
}
fn prepare<Q: ToString>(&self, query: Q) -> error::Result<PreparedQuery>
where
Self: Sized,
{
self.prepare_tw(query, false, false)
}
}