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use r2d2;
use std::cell::RefCell;
use cluster::{GetCompressor, GetConnection};
use error;
use frame::parser::from_connection;
use frame::{Flag, Frame, IntoBytes};
use query::{QueryParams, QueryParamsBuilder, QueryValues};
use transport::CDRSTransport;
use types::CBytesShort;
pub type PreparedQuery = CBytesShort;
pub trait ExecExecutor<
T: CDRSTransport + 'static,
M: r2d2::ManageConnection<Connection = RefCell<T>, Error = error::Error> + Sized,
>: GetConnection<T, M> + GetCompressor<'static>
{
fn exec_with_params_tw(
&self,
prepared: &PreparedQuery,
query_parameters: QueryParams,
with_tracing: bool,
with_warnings: bool,
) -> error::Result<Frame> {
let mut flags = vec![];
if with_tracing {
flags.push(Flag::Tracing);
}
if with_warnings {
flags.push(Flag::Warning);
}
let options_frame = Frame::new_req_execute(prepared, query_parameters, flags).into_cbytes();
let ref compression = self.get_compressor();
self
.get_connection()
.ok_or(error::Error::from("Unable to get transport"))
.and_then(|transport_cell| {
let write_res = transport_cell
.borrow_mut()
.write(options_frame.as_slice())
.map_err(error::Error::from);
write_res.map(|_| transport_cell)
})
.and_then(|transport_cell| from_connection(&transport_cell, compression))
}
fn exec_with_params(
&self,
prepared: &PreparedQuery,
query_parameters: QueryParams,
) -> error::Result<Frame> {
self.exec_with_params_tw(prepared, query_parameters, false, false)
}
fn exec_with_values_tw<V: Into<QueryValues>>(
&self,
prepared: &PreparedQuery,
values: V,
with_tracing: bool,
with_warnings: bool,
) -> error::Result<Frame> {
let query_params_builder = QueryParamsBuilder::new();
let query_params = query_params_builder.values(values.into()).finalize();
self.exec_with_params_tw(prepared, query_params, with_tracing, with_warnings)
}
fn exec_with_values<V: Into<QueryValues>>(
&self,
prepared: &PreparedQuery,
values: V,
) -> error::Result<Frame> {
self.exec_with_values_tw(prepared, values, false, false)
}
fn exec_tw(
&self,
prepared: &PreparedQuery,
with_tracing: bool,
with_warnings: bool,
) -> error::Result<Frame> {
let query_params = QueryParamsBuilder::new().finalize();
self.exec_with_params_tw(prepared, query_params, with_tracing, with_warnings)
}
fn exec(&mut self, prepared: &PreparedQuery) -> error::Result<Frame> {
self.exec_tw(prepared, false, false)
}
}