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// file : odb/pgsql/errors.cxx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <string>
#include <cassert>
#include <odb/pgsql/error.hxx>
#include <odb/pgsql/exceptions.hxx>
#include <odb/pgsql/connection.hxx>
using namespace std;
namespace odb
{
namespace pgsql
{
void
translate_connection_error (connection& c)
{
PGconn* h (c.handle ());
assert (CONNECTION_BAD == PQstatus (h));
if (const char* m = PQerrorMessage (h))
throw database_exception (m);
else
throw database_exception ("unknown error");
}
void
translate_result_error_ (connection& c,
ExecStatusType status = PGRES_EMPTY_QUERY,
const char* sqlstate = 0,
const char* error_message = 0)
{
PGconn* h (c.handle ());
switch (status)
{
case PGRES_BAD_RESPONSE:
{
if (error_message != 0)
throw database_exception (error_message);
else
throw database_exception ("bad server response");
}
case PGRES_FATAL_ERROR:
{
assert (sqlstate);
assert (error_message);
// Deadlock detected.
//
if (std::string ("40P01") == sqlstate)
throw deadlock ();
else if (CONNECTION_BAD == PQstatus (h))
throw connection_lost ();
else
throw database_exception (sqlstate, error_message);
}
default:
{
if (CONNECTION_BAD == PQstatus (h))
throw connection_lost ();
else
throw bad_alloc ();
}
};
}
bool
is_good_result (PGresult* r, ExecStatusType* s)
{
if (r != 0)
{
ExecStatusType status (PQresultStatus (r));
if (s != 0)
*s = status;
return
*s != PGRES_BAD_RESPONSE &&
*s != PGRES_NONFATAL_ERROR &&
*s != PGRES_FATAL_ERROR;
}
return false;
}
void
translate_result_error (connection& c,
PGresult* r,
ExecStatusType s,
bool clear_result)
{
if (!r)
translate_result_error_ (c);
else
{
const char* ss (PQresultErrorField (r, PG_DIAG_SQLSTATE));
const char* m (PQresultErrorMessage (r));
if (clear_result)
PQclear (r);
translate_result_error_ (c, s, ss, m);
}
}
}
}
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