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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 | |
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17 | sub _execute { |
18 | my $self = shift; |
19 | my ($op) = @_; |
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20 | |
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21 | my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_); |
22 | $self->{_scope_identity} = $sth->fetchrow_array if $op eq 'insert'; |
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23 | |
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24 | return wantarray ? ($rv, $sth, @bind) : $rv; |
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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 | |
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41 | sub build_datetime_parser { |
42 | my $self = shift; |
43 | my $type = "DateTime::Format::Strptime"; |
44 | eval "use ${type}"; |
45 | $self->throw_exception("Couldn't load ${type}: $@") if $@; |
46 | return $type->new( pattern => '%F %T' ); |
47 | } |
48 | |
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49 | 1; |
50 | |
51 | __END__ |
52 | |
53 | =head1 NAME |
54 | |
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55 | DBIx::Class::Storage::DBI::ODBC::Microsoft_SQL_Server - Support specific |
56 | to Microsoft SQL Server over ODBC |
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57 | |
58 | =head1 DESCRIPTION |
59 | |
60 | This class implements support specific to Microsoft SQL Server over ODBC, |
61 | including auto-increment primary keys and SQL::Abstract::Limit dialect. It |
62 | is loaded automatically by by DBIx::Class::Storage::DBI::ODBC when it |
63 | detects a MSSQL back-end. |
64 | |
65 | =head1 IMPLEMENTATION NOTES |
66 | |
67 | Microsoft SQL Server supports three methods of retrieving the IDENTITY |
68 | value for inserted row: IDENT_CURRENT, @@IDENTITY, and SCOPE_IDENTITY(). |
69 | SCOPE_IDENTITY is used here because it is the safest. However, it must |
70 | be called is the same execute statement, not just the same connection. |
71 | |
72 | So, this implementation appends a SELECT SCOPE_IDENTITY() statement |
73 | onto each INSERT to accommodate that requirement. |
74 | |
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75 | =head1 METHODS |
76 | |
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77 | =head2 last_insert_id |
78 | |
79 | =head2 sqlt_type |
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80 | |
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81 | =head2 build_datetime_parser |
82 | |
83 | The resulting parser handles the MSSQL C<DATETIME> type, but is almost |
84 | certainly not sufficient for the other MSSQL 2008 date/time types. |
85 | |
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86 | =head1 AUTHORS |
87 | |
88 | Marc Mims C<< <marc@questright.com> >> |
89 | |
90 | =head1 LICENSE |
91 | |
92 | You may distribute this code under the same terms as Perl itself. |
93 | |
94 | =cut |