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// file : odb/pgsql/error.cxx
// 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_error (connection& c, PGresult* r,
size_t pos, multiple_exceptions* mex)
{
if (!r)
{
if (PQstatus (c.handle ()) == CONNECTION_BAD)
{
c.mark_failed ();
throw connection_lost ();
}
else
throw bad_alloc ();
}
// Note that we expect the caller to handle PGRES_PIPELINE_ABORTED since
// it's not really an error but rather an indication that no attempt was
// made to execute this statement.
//
string ss;
switch (PQresultStatus (r))
{
case PGRES_BAD_RESPONSE:
{
throw database_exception ("bad server response");
}
case PGRES_FATAL_ERROR:
{
const char* s (PQresultErrorField (r, PG_DIAG_SQLSTATE));
ss = (s != 0 ? s : "?????");
// Deadlock detected.
//
if (ss == "40001" || ss == "40P01")
throw deadlock ();
else if (PQstatus (c.handle ()) == CONNECTION_BAD)
{
c.mark_failed ();
throw connection_lost ();
}
break;
}
default:
assert (false);
break;
}
string msg;
{
// Can be NULL in case of PGRES_BAD_RESPONSE.
//
const char* m (PQresultErrorMessage (r));
msg = (m != 0 ? m : "bad server response");
// Get rid of the trailing newline if there is one.
//
string::size_type n (msg.size ());
if (n != 0 && msg[n - 1] == '\n')
msg.resize (n - 1);
}
if (mex == 0)
throw database_exception (ss, msg);
else
// In PosgreSQL all errors are fatal.
//
mex->insert (pos, database_exception (ss, msg), true);
}
}
}
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