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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 Class::C3; |
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7 | use base qw/DBIx::Class::Storage::DBI/; |
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8 | |
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9 | use Carp::Clan qw/^DBIx::Class/; |
10 | |
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11 | sub _rebless { |
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12 | my $self = shift; |
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13 | |
14 | if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') { |
15 | my $dbtype = eval { |
16 | @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2] |
17 | } || ''; |
18 | |
19 | my $exception = $@; |
20 | $dbtype =~ s/\W/_/gi; |
21 | my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}"; |
22 | |
23 | if (!$exception && $dbtype && $self->load_optional_class($subclass)) { |
24 | bless $self, $subclass; |
25 | $self->_rebless; |
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26 | } else { |
27 | # real Sybase |
28 | if (not $self->dbh->{syb_dynamic_supported}) { |
29 | bless $self, 'DBIx::Class::Storage:DBI::Sybase::NoBindVars'; |
30 | $self->_rebless; |
31 | } |
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32 | $self->connect_call_datetime_setup; |
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33 | } |
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34 | } |
b50a5275 |
35 | } |
36 | |
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37 | sub _populate_dbh { |
38 | my $self = shift; |
39 | $self->next::method(@_); |
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40 | $self->connect_call_datetime_setup; |
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41 | 1; |
42 | } |
43 | |
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44 | { |
45 | my $old_dbd_warned = 0; |
46 | |
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47 | =head2 connect_call_datetime_setup |
48 | |
49 | Used as: |
50 | |
51 | on_connect_call => 'datetime_setup' |
52 | |
53 | In L<DBIx::Class::Storage::DBI/connect_info> to set: |
54 | |
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55 | $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z |
56 | $dbh->do('set dateformat mdy'); # input fmt: 08/13/1979 18:08:55.080 |
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57 | |
58 | On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using |
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59 | L<DateTime::Format::Sybase>, which you will need to install. |
60 | |
61 | This works for both C<DATETIME> and C<SMALLDATETIME> columns, although |
62 | C<SMALLDATETIME> columns only have minute precision. |
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63 | |
64 | =cut |
65 | |
66 | sub connect_call_datetime_setup { |
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67 | my $self = shift; |
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68 | my $dbh = $self->_dbh; |
69 | |
70 | if ($dbh->can('syb_date_fmt')) { |
71 | $dbh->syb_date_fmt('ISO_strict'); |
72 | } elsif (not $old_dbd_warned) { |
73 | carp "Your DBD::Sybase is too old to support ". |
74 | "DBIx::Class::InflateColumn::DateTime, please upgrade!"; |
75 | $old_dbd_warned = 1; |
76 | } |
77 | |
78 | $dbh->do('set dateformat mdy'); |
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79 | |
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80 | 1; |
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81 | } |
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82 | } |
83 | |
84 | sub _dbh_last_insert_id { |
85 | my ($self, $dbh, $source, $col) = @_; |
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86 | |
87 | # sorry, there's no other way! |
88 | my $sth = $dbh->prepare_cached("select max($col) from ".$source->from); |
89 | return ($dbh->selectrow_array($sth))[0]; |
a964a928 |
90 | } |
91 | |
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92 | sub count { |
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93 | my $self = shift; |
94 | my ($source, $attrs) = @_; |
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95 | |
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96 | if (not exists $attrs->{rows}) { |
97 | return $self->next::method(@_); |
98 | } |
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99 | |
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100 | my $offset = $attrs->{offset} || 0; |
101 | my $total = $attrs->{rows} + $offset; |
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102 | |
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103 | my $new_attrs = $self->_copy_attributes_for_count($source, $attrs); |
104 | |
105 | my $first_pk = ($source->primary_columns)[0]; |
106 | |
107 | $new_attrs->{select} = $first_pk ? "me.$first_pk" : 1; |
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108 | |
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109 | my $tmp_rs = $source->resultset_class->new($source, $new_attrs); |
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110 | |
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111 | $self->dbh->{syb_rowcount} = $total; |
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112 | |
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113 | my $count = 0; |
114 | $count++ while $tmp_rs->cursor->next; |
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115 | |
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116 | $self->dbh->{syb_rowcount} = 0; |
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117 | |
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118 | return $count - $offset; |
b7505130 |
119 | } |
120 | |
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121 | sub datetime_parser_type { "DateTime::Format::Sybase" } |
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122 | |
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123 | 1; |
124 | |
125 | =head1 NAME |
126 | |
127 | DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase |
128 | |
129 | =head1 SYNOPSIS |
130 | |
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131 | This subclass supports L<DBD::Sybase> for real Sybase databases. If you are |
132 | using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to |
133 | L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>. |
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134 | |
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135 | =head1 DESCRIPTION |
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136 | |
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137 | If your version of Sybase does not support placeholders, then your storage |
138 | will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can |
139 | also enable that driver explicitly, see the documentation for more details. |
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140 | |
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141 | With this driver there is unfortunately no way to get the C<last_insert_id> |
142 | without doing a C<select max(col)>. |
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143 | |
144 | But your queries will be cached. |
145 | |
146 | =head1 DATES |
147 | |
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148 | See L</connect_call_datetime_setup> to setup date formats |
149 | for L<DBIx::Class::InflateColumn::DateTime>. |
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150 | |
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151 | =head1 AUTHORS |
152 | |
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153 | See L<DBIx::Class/CONTRIBUTORS>. |
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154 | |
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155 | =head1 LICENSE |
156 | |
157 | You may distribute this code under the same terms as Perl itself. |
158 | |
159 | =cut |
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160 | # vim:sts=2 sw=2: |