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