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c1cac633 |
1 | package DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server; |
2 | use strict; |
3 | use warnings; |
4 | |
5 | use base qw/DBIx::Class::Storage::DBI/; |
6 | |
7 | sub _prep_for_execute { |
8 | my $self = shift; |
9 | my ($op, $extra_bind, $ident, $args) = @_; |
10 | |
11 | my ($sql, $bind) = $self->SUPER::_prep_for_execute(@_); |
12 | $sql .= ';SELECT SCOPE_IDENTITY()' if $op eq 'insert'; |
13 | |
14 | return ($sql, $bind); |
15 | } |
16 | |
17 | sub insert { |
18 | my ($self, $source, $to_insert) = @_; |
19 | |
20 | my $bind_attributes = $self->source_bind_attributes($source); |
21 | my (undef, $sth) = $self->_execute( 'insert' => [], $source, $bind_attributes, $to_insert); |
22 | $self->{_scope_identity} = $sth->fetchrow_array; |
23 | |
24 | return $to_insert; |
25 | } |
26 | |
27 | sub last_insert_id { shift->{_scope_identity} } |
28 | |
29 | sub sqlt_type { 'SQLServer' } |
30 | |
31 | sub _sql_maker_opts { |
32 | my ( $self, $opts ) = @_; |
33 | |
34 | if ( $opts ) { |
35 | $self->{_sql_maker_opts} = { %$opts }; |
36 | } |
37 | |
38 | return { limit_dialect => 'Top', %{$self->{_sql_maker_opts}||{}} }; |
39 | } |
40 | |
41 | 1; |
42 | |
43 | __END__ |
44 | |
45 | =head1 NAME |
46 | |
47 | DBIx::Class::Storage::ODBC::Microsoft_SQL_Server - Support specific to |
48 | Microsoft SQL Server over ODBC |
49 | |
50 | =head1 DESCRIPTION |
51 | |
52 | This class implements support specific to Microsoft SQL Server over ODBC, |
53 | including auto-increment primary keys and SQL::Abstract::Limit dialect. It |
54 | is loaded automatically by by DBIx::Class::Storage::DBI::ODBC when it |
55 | detects a MSSQL back-end. |
56 | |
57 | =head1 IMPLEMENTATION NOTES |
58 | |
59 | Microsoft SQL Server supports three methods of retrieving the IDENTITY |
60 | value for inserted row: IDENT_CURRENT, @@IDENTITY, and SCOPE_IDENTITY(). |
61 | SCOPE_IDENTITY is used here because it is the safest. However, it must |
62 | be called is the same execute statement, not just the same connection. |
63 | |
64 | So, this implementation appends a SELECT SCOPE_IDENTITY() statement |
65 | onto each INSERT to accommodate that requirement. |
66 | |
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67 | =head1 METHODS |
68 | |
69 | =head2 insert |
70 | |
71 | =head2 last_insert_id |
72 | |
73 | =head2 sqlt_type |
c1cac633 |
74 | |
75 | =head1 AUTHORS |
76 | |
77 | Marc Mims C<< <marc@questright.com> >> |
78 | |
79 | =head1 LICENSE |
80 | |
81 | You may distribute this code under the same terms as Perl itself. |
82 | |
83 | =cut |