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1 | package DBIx::Class::Storage::DBI; |
2 | |
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3 | use strict; |
4 | use warnings; |
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5 | use DBI; |
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6 | use SQL::Abstract::Limit; |
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7 | use DBIx::Class::Storage::DBI::Cursor; |
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8 | |
9 | use base qw/DBIx::Class/; |
10 | |
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11 | __PACKAGE__->load_components(qw/Exception AccessorGroup/); |
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12 | |
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13 | __PACKAGE__->mk_group_accessors('simple' => |
14 | qw/connect_info _dbh sql_maker debug cursor/); |
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15 | |
16 | sub new { |
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17 | my $new = bless({}, ref $_[0] || $_[0]); |
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18 | $new->cursor("DBIx::Class::Storage::DBI::Cursor"); |
19 | $new->debug(1) if $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}; |
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20 | return $new; |
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21 | } |
22 | |
23 | sub get_simple { |
24 | my ($self, $get) = @_; |
25 | return $self->{$get}; |
26 | } |
27 | |
28 | sub set_simple { |
29 | my ($self, $set, $val) = @_; |
30 | return $self->{$set} = $val; |
31 | } |
32 | |
33 | =head1 NAME |
34 | |
35 | DBIx::Class::Storage::DBI - DBI storage handler |
36 | |
37 | =head1 SYNOPSIS |
38 | |
39 | =head1 DESCRIPTION |
40 | |
41 | This class represents the connection to the database |
42 | |
43 | =head1 METHODS |
44 | |
45 | =over 4 |
46 | |
47 | =cut |
48 | |
49 | sub dbh { |
50 | my ($self) = @_; |
51 | my $dbh; |
52 | unless (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping) { |
53 | $self->_populate_dbh; |
54 | } |
55 | return $self->_dbh; |
56 | } |
57 | |
58 | sub _populate_dbh { |
59 | my ($self) = @_; |
60 | my @info = @{$self->connect_info || []}; |
61 | $self->_dbh($self->_connect(@info)); |
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62 | $self->sql_maker(new SQL::Abstract::Limit( limit_dialect => $self->_dbh )); |
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63 | } |
64 | |
65 | sub _connect { |
66 | my ($self, @info) = @_; |
67 | return DBI->connect(@info); |
68 | } |
69 | |
70 | =item commit |
71 | |
72 | $class->commit; |
73 | |
74 | Issues a commit again the current dbh |
75 | |
76 | =cut |
77 | |
78 | sub commit { $_[0]->dbh->commit; } |
79 | |
80 | =item rollback |
81 | |
82 | $class->rollback; |
83 | |
84 | Issues a rollback again the current dbh |
85 | |
86 | =cut |
87 | |
88 | sub rollback { $_[0]->dbh->rollback; } |
89 | |
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90 | sub _execute { |
91 | my ($self, $op, $extra_bind, $ident, @args) = @_; |
92 | my ($sql, @bind) = $self->sql_maker->$op($ident, @args); |
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93 | unshift(@bind, @$extra_bind) if $extra_bind; |
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94 | warn "$sql: @bind" if $self->debug; |
95 | my $sth = $self->sth($sql); |
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96 | @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args |
97 | my $rv = $sth->execute(@bind); |
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98 | return (wantarray ? ($rv, $sth, @bind) : $rv); |
99 | } |
100 | |
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101 | sub insert { |
102 | my ($self, $ident, $to_insert) = @_; |
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103 | $self->throw( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", keys %$to_insert)." into ${ident}" ) |
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104 | unless ($self->_execute('insert' => [], $ident, $to_insert) > 0); |
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105 | return $to_insert; |
106 | } |
107 | |
108 | sub update { |
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109 | return shift->_execute('update' => [], @_); |
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110 | } |
111 | |
112 | sub delete { |
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113 | return shift->_execute('delete' => [], @_); |
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114 | } |
115 | |
116 | sub select { |
117 | my ($self, $ident, $select, $condition, $attrs) = @_; |
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118 | my $order = $attrs->{order_by}; |
119 | if (ref $condition eq 'SCALAR') { |
120 | $order = $1 if $$condition =~ s/ORDER BY (.*)$//i; |
121 | } |
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122 | my ($rv, $sth, @bind) = $self->_execute('select', $attrs->{bind}, $ident, $select, $condition, $order, $attrs->{rows}, $attrs->{offset}); |
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123 | return $self->cursor->new($sth, \@bind, $attrs); |
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124 | } |
125 | |
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126 | sub select_single { |
127 | my ($self, $ident, $select, $condition, $attrs) = @_; |
128 | my $order = $attrs->{order_by}; |
129 | if (ref $condition eq 'SCALAR') { |
130 | $order = $1 if $$condition =~ s/ORDER BY (.*)$//i; |
131 | } |
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132 | my ($rv, $sth, @bind) = $self->_execute('select', $attrs->{bind}, $ident, $select, $condition, $order, 1, $attrs->{offset}); |
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133 | return $sth->fetchrow_array; |
134 | } |
135 | |
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136 | sub sth { |
137 | shift->dbh->prepare(@_); |
138 | } |
139 | |
140 | 1; |
141 | |
142 | =back |
143 | |
144 | =head1 AUTHORS |
145 | |
daec44b8 |
146 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
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147 | |
148 | =head1 LICENSE |
149 | |
150 | You may distribute this code under the same terms as Perl itself. |
151 | |
152 | =cut |
153 | |