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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 | use mro 'c3'; |
7 | |
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8 | use List::Util(); |
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9 | |
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10 | sub insert_bulk { |
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11 | my $self = shift; |
12 | my ($source, $cols, $data) = @_; |
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13 | |
14 | my $identity_insert = 0; |
15 | |
16 | COLUMNS: |
17 | foreach my $col (@{$cols}) { |
18 | if ($source->column_info($col)->{is_auto_increment}) { |
19 | $identity_insert = 1; |
20 | last COLUMNS; |
21 | } |
22 | } |
23 | |
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24 | if ($identity_insert) { |
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25 | my $table = $source->from; |
26 | $self->dbh->do("SET IDENTITY_INSERT $table ON"); |
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27 | } |
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28 | |
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29 | $self->next::method(@_); |
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30 | |
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31 | if ($identity_insert) { |
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32 | my $table = $source->from; |
33 | $self->dbh->do("SET IDENTITY_INSERT $table OFF"); |
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34 | } |
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35 | } |
36 | |
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37 | sub _prep_for_execute { |
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38 | my $self = shift; |
39 | my ($op, $extra_bind, $ident, $args) = @_; |
40 | |
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41 | # cast MONEY values properly |
42 | if ($op eq 'insert' || $op eq 'update') { |
43 | my $fields = $args->[0]; |
44 | my $col_info = $self->_resolve_column_info($ident, [keys %$fields]); |
45 | |
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46 | for my $col (keys %$fields) { |
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47 | if ($col_info->{$col}{data_type} =~ /^money\z/i) { |
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48 | my $val = $fields->{$col}; |
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49 | $fields->{$col} = \['CAST(? AS MONEY)', [ $col => $val ]]; |
50 | } |
51 | } |
52 | } |
53 | |
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54 | my ($sql, $bind) = $self->next::method (@_); |
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55 | |
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56 | if ($op eq 'insert') { |
57 | $sql .= ';SELECT SCOPE_IDENTITY()'; |
58 | |
59 | my $col_info = $self->_resolve_column_info($ident, [map $_->[0], @{$bind}]); |
60 | if (List::Util::first { $_->{is_auto_increment} } (values %$col_info) ) { |
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61 | |
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62 | my $table = $ident->from; |
63 | my $identity_insert_on = "SET IDENTITY_INSERT $table ON"; |
64 | my $identity_insert_off = "SET IDENTITY_INSERT $table OFF"; |
65 | $sql = "$identity_insert_on; $sql; $identity_insert_off"; |
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66 | } |
67 | } |
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68 | |
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69 | return ($sql, $bind); |
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70 | } |
71 | |
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72 | sub _execute { |
73 | my $self = shift; |
74 | my ($op) = @_; |
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75 | |
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76 | my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_); |
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77 | if ($op eq 'insert') { |
78 | $self->{_scope_identity} = $sth->fetchrow_array; |
79 | $sth->finish; |
80 | } |
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81 | |
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82 | return wantarray ? ($rv, $sth, @bind) : $rv; |
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83 | } |
84 | |
85 | sub last_insert_id { shift->{_scope_identity} } |
86 | |
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87 | 1; |
88 | |
89 | __END__ |
90 | |
91 | =head1 NAME |
92 | |
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93 | DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server - Support specific |
94 | to Microsoft SQL Server over ODBC |
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95 | |
96 | =head1 DESCRIPTION |
97 | |
98 | This class implements support specific to Microsoft SQL Server over ODBC, |
99 | including auto-increment primary keys and SQL::Abstract::Limit dialect. It |
100 | is loaded automatically by by DBIx::Class::Storage::DBI::ODBC when it |
101 | detects a MSSQL back-end. |
102 | |
103 | =head1 IMPLEMENTATION NOTES |
104 | |
105 | Microsoft SQL Server supports three methods of retrieving the IDENTITY |
106 | value for inserted row: IDENT_CURRENT, @@IDENTITY, and SCOPE_IDENTITY(). |
107 | SCOPE_IDENTITY is used here because it is the safest. However, it must |
108 | be called is the same execute statement, not just the same connection. |
109 | |
110 | So, this implementation appends a SELECT SCOPE_IDENTITY() statement |
111 | onto each INSERT to accommodate that requirement. |
112 | |
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113 | =head1 AUTHORS |
114 | |
115 | Marc Mims C<< <marc@questright.com> >> |
116 | |
117 | =head1 LICENSE |
118 | |
119 | You may distribute this code under the same terms as Perl itself. |
120 | |
121 | =cut |
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122 | # vim: sw=2 sts=2 |