package DBIx::Class::Storage::DBI::ODBC;
use strict;
use warnings;
use base qw/DBIx::Class::Storage::DBI/;
use mro 'c3';

use DBIx::Class::_Util 'modver_gt_or_eq';
use namespace::clean;

sub _rebless { shift->_determine_connector_driver('ODBC') }

# Whether or not we are connecting via the freetds ODBC driver
sub _using_freetds {
  my $self = shift;

  my $dsn = $self->_dbi_connect_info->[0];

  return 1 if (
    ( (! ref $dsn) and $dsn =~ /driver=FreeTDS/i)
      or
    ( ($self->_dbh_get_info('SQL_DRIVER_NAME')||'') =~ /tdsodbc/i )
  );

  return 0;
}

# Either returns the FreeTDS version via which we are connecting, 0 if can't
# be determined, or undef otherwise
sub _using_freetds_version {
  my $self = shift;
  return undef unless $self->_using_freetds;
  return $self->_dbh_get_info('SQL_DRIVER_VER') || 0;
}

sub _disable_odbc_array_ops {
  my $self = shift;
  my $dbh  = $self->_get_dbh;

  $DBD::ODBC::__DBIC_DISABLE_ARRAY_OPS_VIA__ ||= [ do {
    if( modver_gt_or_eq('DBD::ODBC', '1.35_01') ) {
      odbc_array_operations => 0;
    }
    elsif( modver_gt_or_eq('DBD::ODBC', '1.33_01') ) {
      odbc_disable_array_operations => 1;
    }
  }];

  if (my ($k, $v) = @$DBD::ODBC::__DBIC_DISABLE_ARRAY_OPS_VIA__) {
    $dbh->{$k} = $v;
  }
}

=head1 NAME

DBIx::Class::Storage::DBI::ODBC - Base class for ODBC drivers

=head1 DESCRIPTION

This class simply provides a mechanism for discovering and loading a sub-class
for a specific ODBC backend.  It should be transparent to the user.

=head1 FURTHER QUESTIONS?

Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.

=head1 COPYRIGHT AND LICENSE

This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
redistribute it and/or modify it under the same terms as the
L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.

=cut

1;

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