use base qw/DBIx::Class::Storage::DBI::MSSQL/;
use mro 'c3';
-
-use Carp::Clan qw/^DBIx::Class/;
-use List::Util();
-use Scalar::Util ();
+use Scalar::Util 'reftype';
+use Try::Tiny;
+use namespace::clean;
__PACKAGE__->mk_group_accessors(simple => qw/
_using_dynamic_cursors
on_connect_call => 'use_dynamic_cursors'
-in your L<DBIx::Class::Storage::DBI/connect_info> as one way to enable multiple
+in your L<connect_info|DBIx::Class::Storage::DBI/connect_info> as one way to enable multiple
concurrent statements.
Will add C<< odbc_cursortype => 2 >> to your DBI connection attributes. See
L<DBD::ODBC/odbc_cursortype> for more information.
-Alternatively, you can add it yourself and dynamic cursor will be automatically
-enabled.
+Alternatively, you can add it yourself and dynamic cursor support will be
+automatically enabled.
+
+If you're using FreeTDS, C<tds_version> must be set to at least C<8.0>.
-This will not work with CODE ref connect_info's and will do nothing if you set
-C<odbc_cursortype> yourself.
+This will not work with CODE ref connect_info's.
B<WARNING:> this will break C<SCOPE_IDENTITY()>, and C<SELECT @@IDENTITY> will
be used instead, which on SQL Server 2005 and later will return erroneous
my $self = shift;
if (ref($self->_dbi_connect_info->[0]) eq 'CODE') {
- croak 'cannot set DBI attributes on a CODE ref connect_info';
+ $self->throw_exception ('Cannot set DBI attributes on a CODE ref connect_info');
}
my $dbi_attrs = $self->_dbi_connect_info->[-1];
- unless (ref($dbi_attrs) && Scalar::Util::reftype($dbi_attrs) eq 'HASH') {
+ unless (ref($dbi_attrs) && reftype $dbi_attrs eq 'HASH') {
$dbi_attrs = {};
push @{ $self->_dbi_connect_info }, $dbi_attrs;
}
if (not exists $dbi_attrs->{odbc_cursortype}) {
# turn on support for multiple concurrent statements, unless overridden
$dbi_attrs->{odbc_cursortype} = 2;
- my $connected = defined $self->_dbh;
- $self->disconnect;
- $self->ensure_connected if $connected;
+ $self->disconnect; # resetting dbi attrs, so have to reconnect
+ $self->ensure_connected;
$self->_set_dynamic_cursors;
}
}
sub _set_dynamic_cursors {
my $self = shift;
+ my $dbh = $self->_get_dbh;
+
+ try {
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
+ $dbh->do('SELECT @@IDENTITY');
+ } catch {
+ $self->throw_exception (<<'EOF');
+
+Your drivers do not seem to support dynamic cursors (odbc_cursortype => 2),
+if you're using FreeTDS, make sure to set tds_version to 8.0 or greater.
+EOF
+ };
+
$self->_using_dynamic_cursors(1);
$self->_identity_method('@@identity');
}
-sub _rebless {
- no warnings 'uninitialized';
+sub _init {
my $self = shift;
- if (ref($self->_dbi_connect_info->[0]) ne 'CODE' &&
- eval { $self->_dbi_connect_info->[-1]{odbc_cursortype} } == 2) {
+ no warnings qw/uninitialized/;
+
+ if (
+ ref($self->_dbi_connect_info->[0]) ne 'CODE'
+ &&
+ ref ($self->_dbi_connect_info->[-1]) eq 'HASH'
+ &&
+ $self->_dbi_connect_info->[-1]{odbc_cursortype} == 2
+ ) {
$self->_set_dynamic_cursors;
return;
}
my $self = shift;
my $sql_rowset_size = shift || 2;
- $self->_dbh->{odbc_SQL_ROWSET_SIZE} = $sql_rowset_size;
+ $self->_get_dbh->{odbc_SQL_ROWSET_SIZE} = $sql_rowset_size;
}
-=head2 connect_call_use_mars
+=head2 connect_call_use_MARS
Use as:
- on_connect_call => 'use_mars'
+ on_connect_call => 'use_MARS'
Use to enable a feature of SQL Server 2005 and later, "Multiple Active Result
Sets". See L<DBD::ODBC::FAQ/Does DBD::ODBC support Multiple Active Statements?>
=cut
-sub connect_call_use_mars {
+sub connect_call_use_MARS {
my $self = shift;
my $dsn = $self->_dbi_connect_info->[0];
if (ref($dsn) eq 'CODE') {
- croak 'cannot change the DBI DSN on a CODE ref connect_info';
+ $self->throw_exception('cannot change the DBI DSN on a CODE ref connect_info');
}
if ($dsn !~ /MARS_Connection=/) {
$self->_dbi_connect_info->[0] = "$dsn;MARS_Connection=Yes";
- my $connected = defined $self->_dbh;
+ my $was_connected = defined $self->_dbh;
$self->disconnect;
- $self->ensure_connected if $connected;
+ $self->ensure_connected if $was_connected;
}
}