Commit | Line | Data |
c1cac633 |
1 | package DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server; |
2 | use strict; |
3 | use warnings; |
4 | |
eb0323df |
5 | use base qw/DBIx::Class::Storage::DBI::MSSQL/; |
c1cac633 |
6 | |
7 | sub _prep_for_execute { |
259c0e40 |
8 | my $self = shift; |
9 | my ($op, $extra_bind, $ident, $args) = @_; |
10 | |
11 | my ($sql, $bind) = $self->next::method (@_); |
12 | $sql .= ';SELECT SCOPE_IDENTITY()' if $op eq 'insert'; |
13 | |
14 | use Scalar::Util 'blessed'; |
15 | use List::Util 'first'; |
16 | if ( blessed $ident ) { |
17 | my %auto_inc_columns; |
18 | foreach my $column ($ident->columns) { |
19 | if ($ident->column_info($column)->{is_auto_increment}) { |
20 | $auto_inc_columns{$column} = 1; |
21 | } |
22 | } |
c1cac633 |
23 | |
259c0e40 |
24 | my $table = $ident->from; |
25 | my $auto_inc_col = 0; |
26 | BINDS: |
27 | foreach my $bound (@{$bind}) { |
28 | my $col = $bound->[0]; |
29 | if ($auto_inc_columns{$col}) { |
30 | $auto_inc_col = 1; |
31 | last BINDS; |
32 | } |
33 | } |
34 | if ($auto_inc_col) { |
35 | $sql = "SET IDENTITY_INSERT $table ON; $sql; SET IDENTITY_INSERT $table OFF;" |
36 | } |
37 | } |
c1cac633 |
38 | |
259c0e40 |
39 | return ($sql, $bind); |
c1cac633 |
40 | } |
41 | |
2eebd801 |
42 | sub _execute { |
43 | my $self = shift; |
44 | my ($op) = @_; |
c1cac633 |
45 | |
2eebd801 |
46 | my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_); |
77af494b |
47 | if ($op eq 'insert') { |
48 | $self->{_scope_identity} = $sth->fetchrow_array; |
49 | $sth->finish; |
50 | } |
c1cac633 |
51 | |
2eebd801 |
52 | return wantarray ? ($rv, $sth, @bind) : $rv; |
c1cac633 |
53 | } |
54 | |
55 | sub last_insert_id { shift->{_scope_identity} } |
56 | |
c1cac633 |
57 | 1; |
58 | |
59 | __END__ |
60 | |
61 | =head1 NAME |
62 | |
a89c6fc0 |
63 | DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server - Support specific |
64 | to Microsoft SQL Server over ODBC |
c1cac633 |
65 | |
66 | =head1 DESCRIPTION |
67 | |
68 | This class implements support specific to Microsoft SQL Server over ODBC, |
69 | including auto-increment primary keys and SQL::Abstract::Limit dialect. It |
70 | is loaded automatically by by DBIx::Class::Storage::DBI::ODBC when it |
71 | detects a MSSQL back-end. |
72 | |
73 | =head1 IMPLEMENTATION NOTES |
74 | |
75 | Microsoft SQL Server supports three methods of retrieving the IDENTITY |
76 | value for inserted row: IDENT_CURRENT, @@IDENTITY, and SCOPE_IDENTITY(). |
77 | SCOPE_IDENTITY is used here because it is the safest. However, it must |
78 | be called is the same execute statement, not just the same connection. |
79 | |
80 | So, this implementation appends a SELECT SCOPE_IDENTITY() statement |
81 | onto each INSERT to accommodate that requirement. |
82 | |
c1cac633 |
83 | =head1 AUTHORS |
84 | |
85 | Marc Mims C<< <marc@questright.com> >> |
86 | |
87 | =head1 LICENSE |
88 | |
89 | You may distribute this code under the same terms as Perl itself. |
90 | |
91 | =cut |
259c0e40 |
92 | # vim: sw=2 sts=2 |