/* Convert a libpq result to Datum */
Datum
plproxy_recv_type(ProxyType *type, char *val, int len, bool bin)
{
Datum res;
StringInfoData buf;
Assert(type->for_send == 0);
if (bin)
{
if (!type->has_recv)
elog(ERROR, "PL/Proxy: type %u recv not supported", type->type_oid);
/* avoid unnecessary copy */
setFixedStringInfo(&buf, val, len);
res = ReceiveFunctionCall(&type->io.in.recv_func,
&buf, type->io_param, -1);
}
else
{
res = InputFunctionCall(&type->io.in.input_func,
val, type->io_param, -1);
}
return res;
}
static Datum
get_row(FunctionCallInfo fcinfo, PlxResult *plx_result, int nrow)
{
StringInfoData buf;
PlxFn *plx_fn = plx_result->plx_fn;
PGresult *pg_result = plx_result->pg_result;
Datum ret;
if (PQgetisnull(pg_result, nrow, 0))
{
fcinfo->isnull = true;
return (Datum)NULL;
}
setFixedStringInfo(&buf,
PQgetvalue(pg_result, nrow, 0),
PQgetlength(pg_result, nrow, 0));
PG_TRY();
{
if (plx_fn->is_binary)
ret = ReceiveFunctionCall(&plx_fn->ret_type->receive_fn,
&buf,
plx_fn->ret_type->receive_io_params,
plx_fn->ret_type_mod);
else
ret = InputFunctionCall(&plx_fn->ret_type->input_fn,
buf.data,
plx_fn->ret_type->receive_io_params,
plx_fn->ret_type_mod);
}
PG_CATCH();
{
plx_result_cache_delete(fcinfo);
PQclear(pg_result);
pfree(plx_result);
PG_RE_THROW();
}
PG_END_TRY();
return ret;
}
