-package DBIx::Class::Storage::DBI::MSSQL;\r
-\r
-use strict;\r
-use warnings;\r
-\r
-use base qw/DBIx::Class::Storage::DBI/;\r
-\r
-# __PACKAGE__->load_components(qw/PK::Auto/);\r
-\r
-sub last_insert_id {\r
- my( $id ) = $_[0]->_dbh->selectrow_array('SELECT @@IDENTITY' );\r
- return $id;\r
-}\r
-\r
-1;\r
-\r
-=head1 NAME \r
-\r
-DBIx::Class::Storage::DBI::MSSQL - Automatic primary key class for MSSQL\r
-\r
-=head1 SYNOPSIS\r
-\r
- # In your table classes\r
- __PACKAGE__->load_components(qw/PK::Auto Core/);\r
- __PACKAGE__->set_primary_key('id');\r
-\r
-=head1 DESCRIPTION\r
-\r
-This class implements autoincrements for MSSQL.\r
-\r
-=head1 AUTHORS\r
-\r
-Brian Cassidy <bricas@cpan.org>\r
-\r
-=head1 LICENSE\r
-\r
-You may distribute this code under the same terms as Perl itself.\r
-\r
-=cut\r
+package DBIx::Class::Storage::DBI::MSSQL;
+
+use strict;
+use warnings;
+
+use base qw/DBIx::Class::Storage::DBI::AmbiguousGlob DBIx::Class::Storage::DBI/;
+use mro 'c3';
+
+use List::Util();
+
+__PACKAGE__->mk_group_accessors(simple => qw/
+ _identity _identity_method
+/);
+
+__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::MSSQL');
+
+sub _set_identity_insert {
+ my ($self, $table) = @_;
+
+ my $sql = sprintf (
+ 'SET IDENTITY_INSERT %s ON',
+ $self->sql_maker->_quote ($table),
+ );
+
+ my $dbh = $self->_get_dbh;
+ eval { $dbh->do ($sql) };
+ if ($@) {
+ $self->throw_exception (sprintf "Error executing '%s': %s",
+ $sql,
+ $dbh->errstr,
+ );
+ }
+}
+
+sub _unset_identity_insert {
+ my ($self, $table) = @_;
+
+ my $sql = sprintf (
+ 'SET IDENTITY_INSERT %s OFF',
+ $self->sql_maker->_quote ($table),
+ );
+
+ my $dbh = $self->_get_dbh;
+ $dbh->do ($sql);
+}
+
+sub insert_bulk {
+ my $self = shift;
+ my ($source, $cols, $data) = @_;
+
+ my $is_identity_insert = (List::Util::first
+ { $source->column_info ($_)->{is_auto_increment} }
+ (@{$cols})
+ )
+ ? 1
+ : 0;
+
+ if ($is_identity_insert) {
+ $self->_set_identity_insert ($source->name);
+ }
+
+ $self->next::method(@_);
+
+ if ($is_identity_insert) {
+ $self->_unset_identity_insert ($source->name);
+ }
+}
+
+# support MSSQL GUID column types
+
+sub insert {
+ my $self = shift;
+ my ($source, $to_insert) = @_;
+
+ my $supplied_col_info = $self->_resolve_column_info($source, [keys %$to_insert] );
+
+ my %guid_cols;
+ my @pk_cols = $source->primary_columns;
+ my %pk_cols;
+ @pk_cols{@pk_cols} = ();
+
+ my @pk_guids = grep {
+ $source->column_info($_)->{data_type}
+ &&
+ $source->column_info($_)->{data_type} =~ /^uniqueidentifier/i
+ } @pk_cols;
+
+ my @auto_guids = grep {
+ $source->column_info($_)->{data_type}
+ &&
+ $source->column_info($_)->{data_type} =~ /^uniqueidentifier/i
+ &&
+ $source->column_info($_)->{auto_nextval}
+ } grep { not exists $pk_cols{$_} } $source->columns;
+
+ my @get_guids_for =
+ grep { not exists $to_insert->{$_} } (@pk_guids, @auto_guids);
+
+ my $updated_cols = {};
+
+ for my $guid_col (@get_guids_for) {
+ my ($new_guid) = $self->_get_dbh->selectrow_array('SELECT NEWID()');
+ $updated_cols->{$guid_col} = $to_insert->{$guid_col} = $new_guid;
+ }
+
+ my $is_identity_insert = (List::Util::first { $_->{is_auto_increment} } (values %$supplied_col_info) )
+ ? 1
+ : 0;
+
+ if ($is_identity_insert) {
+ $self->_set_identity_insert ($source->name);
+ }
+
+ $updated_cols = { %$updated_cols, %{ $self->next::method(@_) } };
+
+ if ($is_identity_insert) {
+ $self->_unset_identity_insert ($source->name);
+ }
+
+
+ return $updated_cols;
+}
+
+sub _prep_for_execute {
+ my $self = shift;
+ my ($op, $extra_bind, $ident, $args) = @_;
+
+# cast MONEY values properly
+ if ($op eq 'insert' || $op eq 'update') {
+ my $fields = $args->[0];
+
+ for my $col (keys %$fields) {
+ # $ident is a result source object with INSERT/UPDATE ops
+ if ($ident->column_info ($col)->{data_type}
+ &&
+ $ident->column_info ($col)->{data_type} =~ /^money\z/i) {
+ my $val = $fields->{$col};
+ $fields->{$col} = \['CAST(? AS MONEY)', [ $col => $val ]];
+ }
+ }
+ }
+
+ my ($sql, $bind) = $self->next::method (@_);
+
+ if ($op eq 'insert') {
+ $sql .= ';SELECT SCOPE_IDENTITY()';
+
+ }
+
+ return ($sql, $bind);
+}
+
+sub _execute {
+ my $self = shift;
+ my ($op) = @_;
+
+ my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_);
+
+ if ($op eq 'insert') {
+
+ # this should bring back the result of SELECT SCOPE_IDENTITY() we tacked
+ # on in _prep_for_execute above
+ my ($identity) = eval { $sth->fetchrow_array };
+
+ # SCOPE_IDENTITY failed, but we can do something else
+ if ( (! $identity) && $self->_identity_method) {
+ ($identity) = $self->_dbh->selectrow_array(
+ 'select ' . $self->_identity_method
+ );
+ }
+
+ $self->_identity($identity);
+ $sth->finish;
+ }
+
+ return wantarray ? ($rv, $sth, @bind) : $rv;
+}
+
+sub last_insert_id { shift->_identity }
+
+#
+# MSSQL is retarded wrt ordered subselects. One needs to add a TOP 100%
+# to *all* subqueries, do it here.
+#
+sub _select_args_to_query {
+ my $self = shift;
+
+ # _select_args does some shady action at a distance
+ # see DBI.pm for more info
+ my $sql_maker = $self->sql_maker;
+ my ($op, $bind, $ident, $bind_attrs, $select, $cond, $order, $rows, $offset);
+ {
+ local $sql_maker->{_dbic_rs_attrs};
+ ($op, $bind, $ident, $bind_attrs, $select, $cond, $order, $rows, $offset) = $self->_select_args(@_);
+ }
+
+ if (
+ ($rows || $offset)
+ ||
+ not scalar $sql_maker->_order_by_chunks ($order->{order_by})
+ ) {
+ # either limited RS or no ordering, just short circuit
+ return $self->next::method (@_);
+ }
+
+ my ($sql, $prep_bind, @rest) = $self->next::method (@_);
+ $sql =~ s/^ \s* SELECT \s/SELECT TOP 100 PERCENT /xi;
+
+ return wantarray
+ ? ($sql, $prep_bind, @rest)
+ : \[ "($sql)", @$prep_bind ]
+ ;
+}
+
+
+# savepoint syntax is the same as in Sybase ASE
+
+sub _svp_begin {
+ my ($self, $name) = @_;
+
+ $self->_get_dbh->do("SAVE TRANSACTION $name");
+}
+
+# A new SAVE TRANSACTION with the same name releases the previous one.
+sub _svp_release { 1 }
+
+sub _svp_rollback {
+ my ($self, $name) = @_;
+
+ $self->_get_dbh->do("ROLLBACK TRANSACTION $name");
+}
+
+sub build_datetime_parser {
+ my $self = shift;
+ my $type = "DateTime::Format::Strptime";
+ eval "use ${type}";
+ $self->throw_exception("Couldn't load ${type}: $@") if $@;
+ return $type->new( pattern => '%Y-%m-%d %H:%M:%S' ); # %F %T
+}
+
+sub sqlt_type { 'SQLServer' }
+
+sub _sql_maker_opts {
+ my ( $self, $opts ) = @_;
+
+ if ( $opts ) {
+ $self->{_sql_maker_opts} = { %$opts };
+ }
+
+ return { limit_dialect => 'RowNumberOver', %{$self->{_sql_maker_opts}||{}} };
+}
+
+1;
+
+=head1 NAME
+
+DBIx::Class::Storage::DBI::MSSQL - Base Class for Microsoft SQL Server support
+in DBIx::Class
+
+=head1 SYNOPSIS
+
+This is the base class for Microsoft SQL Server support, used by
+L<DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server> and
+L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>.
+
+=head1 IMPLEMENTATION NOTES
+
+=head2 IDENTITY information
+
+Microsoft SQL Server supports three methods of retrieving the IDENTITY
+value for inserted row: IDENT_CURRENT, @@IDENTITY, and SCOPE_IDENTITY().
+SCOPE_IDENTITY is used here because it is the safest. However, it must
+be called is the same execute statement, not just the same connection.
+
+So, this implementation appends a SELECT SCOPE_IDENTITY() statement
+onto each INSERT to accommodate that requirement.
+
+C<SELECT @@IDENTITY> can also be used by issuing:
+
+ $self->_identity_method('@@identity');
+
+it will only be used if SCOPE_IDENTITY() fails.
+
+This is more dangerous, as inserting into a table with an on insert trigger that
+inserts into another table with an identity will give erroneous results on
+recent versions of SQL Server.
+
+=head2 identity insert
+
+Be aware that we have tried to make things as simple as possible for our users.
+For MSSQL that means that when a user tries to create a row, while supplying an
+explicit value for an autoincrementing column, we will try to issue the
+appropriate database call to make this possible, namely C<SET IDENTITY_INSERT
+$table_name ON>. Unfortunately this operation in MSSQL requires the
+C<db_ddladmin> privilege, which is normally not included in the standard
+write-permissions.
+
+=head1 AUTHOR
+
+See L<DBIx::Class/CONTRIBUTORS>.
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
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