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1 | package DBIx::Class::Storage::DBI::Sybase; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
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6 | use base qw/DBIx::Class::Storage::DBI/; |
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7 | |
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8 | use Carp::Clan qw/^DBIx::Class/; |
9 | |
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10 | sub _rebless { |
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11 | my $self = shift; |
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12 | |
13 | if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') { |
14 | my $dbtype = eval { |
15 | @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2] |
16 | } || ''; |
17 | |
18 | my $exception = $@; |
19 | $dbtype =~ s/\W/_/gi; |
20 | my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}"; |
21 | |
22 | if (!$exception && $dbtype && $self->load_optional_class($subclass)) { |
23 | bless $self, $subclass; |
24 | $self->_rebless; |
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25 | } elsif (not $self->dbh->{syb_dynamic_supported}) { |
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26 | bless $self, 'DBIx::Class::Storage:DBI::Sybase::NoBindVars'; |
27 | $self->_rebless; |
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28 | } |
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29 | } |
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30 | } |
31 | |
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32 | { |
33 | my $old_dbd_warned = 0; |
34 | |
35 | sub _populate_dbh { |
36 | my $self = shift; |
37 | $self->next::method(@_); |
38 | my $dbh = $self->_dbh; |
39 | |
40 | if ($dbh->can('syb_date_fmt')) { |
41 | $dbh->syb_date_fmt('ISO_strict'); |
42 | } elsif (not $old_dbd_warned) { |
43 | carp "Your DBD::Sybase is too old to support ". |
44 | "DBIx::Class::InflateColumn::DateTime, please upgrade!"; |
45 | $old_dbd_warned = 1; |
46 | } |
47 | |
48 | $dbh->do('set dateformat mdy'); |
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49 | |
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50 | 1; |
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51 | } |
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52 | } |
53 | |
54 | sub _dbh_last_insert_id { |
55 | my ($self, $dbh, $source, $col) = @_; |
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56 | |
57 | # sorry, there's no other way! |
58 | my $sth = $dbh->prepare_cached("select max($col) from ".$source->from); |
59 | return ($dbh->selectrow_array($sth))[0]; |
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60 | } |
61 | |
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62 | sub count { |
63 | my ($self, $source, $attrs) = @_; |
64 | |
65 | if (exists $attrs->{rows}) { |
66 | my $new_attrs = $self->_trim_attributes_for_count($source, $attrs); |
67 | |
68 | $new_attrs->{select} = '1'; |
69 | $new_attrs->{as} = ['dummy']; |
70 | |
71 | # speed things up at least *a little* |
72 | $new_attrs->{result_class} = 'DBIx::Class::ResultClass::HashRefInflator'; |
73 | |
74 | my $offset = $attrs->{offset} || 0; |
75 | my $total = $attrs->{rows} + $offset; |
76 | |
77 | $self->dbh->do("set rowcount $total"); |
78 | |
79 | my $tmp_rs = $source->resultset_class->new($source, $new_attrs); |
80 | |
81 | my $count = 0; |
82 | $count++ while $tmp_rs->cursor->next; |
83 | |
84 | $self->dbh->do("set rowcount 0"); |
85 | |
86 | return $count; |
87 | } |
88 | |
89 | return $self->next::method(@_); |
90 | } |
91 | |
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92 | sub datetime_parser_type { "DBIx::Class::Storage::DBI::Sybase::DateTime" } |
93 | |
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94 | 1; |
95 | |
96 | =head1 NAME |
97 | |
98 | DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase |
99 | |
100 | =head1 SYNOPSIS |
101 | |
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102 | This subclass supports L<DBD::Sybase> for real Sybase databases. If you are |
103 | using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to |
104 | L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>. |
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105 | |
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106 | =head1 DESCRIPTION |
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107 | |
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108 | If your version of Sybase does not support placeholders, then your storage |
109 | will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can |
110 | also enable that driver explicitly, see the documentation for more details. |
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111 | |
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112 | With this driver there is unfortunately no way to get the C<last_insert_id> |
113 | without doing a C<select max(col)>. |
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114 | |
115 | But your queries will be cached. |
116 | |
117 | =head1 DATES |
118 | |
119 | On connection C<syb_date_fmt> is set to C<ISO_strict>, e.g.: |
120 | C<2004-08-21T14:36:48.080Z> and C<dateformat> is set to C<mdy>, e.g.: |
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121 | C<08/13/1979 18:08:55.080>. |
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122 | |
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123 | This works for both C<DATETIME> and C<SMALLDATETIME> columns, although |
124 | C<SMALLDATETIME> columns only have minute precision. |
125 | |
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126 | You will need the L<DateTime::Format::Strptime> module if you are going to use |
127 | L<DBIx::Class::InflateColumn::DateTime>. |
128 | |
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129 | =head1 AUTHORS |
130 | |
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131 | See L<DBIx::Class/CONTRIBUTORS>. |
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132 | |
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133 | =head1 LICENSE |
134 | |
135 | You may distribute this code under the same terms as Perl itself. |
136 | |
137 | =cut |
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138 | # vim:sts=2 sw=2: |