Commit | Line | Data |
8b445e33 |
1 | package DBIx::Class::Storage::DBI; |
2 | |
20a2c954 |
3 | use strict; |
4 | use warnings; |
8b445e33 |
5 | use DBI; |
aeaf3ce2 |
6 | use SQL::Abstract::Limit; |
28927b50 |
7 | use DBIx::Class::Storage::DBI::Cursor; |
8b445e33 |
8 | |
bd7efd39 |
9 | BEGIN { |
10 | |
11 | package DBIC::SQL::Abstract; # Temporary. Merge upstream. |
12 | |
13 | use base qw/SQL::Abstract::Limit/; |
14 | |
54540863 |
15 | sub select { |
16 | my ($self, $table, $fields, $where, $order, @rest) = @_; |
17 | @rest = (-1) unless defined $rest[0]; |
18 | $self->SUPER::select($table, $self->_recurse_fields($fields), |
19 | $where, $order, @rest); |
20 | } |
21 | |
22 | sub _emulate_limit { |
23 | my $self = shift; |
24 | if ($_[3] == -1) { |
25 | return $_[1].$self->_order_by($_[2]); |
26 | } else { |
27 | return $self->SUPER::_emulate_limit(@_); |
28 | } |
29 | } |
30 | |
31 | sub _recurse_fields { |
32 | my ($self, $fields) = @_; |
33 | my $ref = ref $fields; |
34 | return $self->_quote($fields) unless $ref; |
35 | return $$fields if $ref eq 'SCALAR'; |
36 | |
37 | if ($ref eq 'ARRAY') { |
38 | return join(', ', map { $self->_recurse_fields($_) } @$fields); |
39 | } elsif ($ref eq 'HASH') { |
40 | foreach my $func (keys %$fields) { |
41 | return $self->_sqlcase($func) |
42 | .'( '.$self->_recurse_fields($fields->{$func}).' )'; |
43 | } |
44 | } |
45 | } |
46 | |
47 | sub _order_by { |
48 | my $self = shift; |
49 | my $ret = ''; |
50 | if (ref $_[0] eq 'HASH') { |
51 | if (defined $_[0]->{group_by}) { |
52 | $ret = $self->_sqlcase(' group by ') |
53 | .$self->_recurse_fields($_[0]->{group_by}); |
54 | } |
55 | if (defined $_[0]->{order_by}) { |
56 | $ret .= $self->SUPER::_order_by($_[0]->{order_by}); |
57 | } |
58 | } else { |
59 | $ret = $self->SUPER::_order_by(@_); |
60 | } |
61 | return $ret; |
62 | } |
63 | |
2a816814 |
64 | sub _table { |
bd7efd39 |
65 | my ($self, $from) = @_; |
66 | if (ref $from eq 'ARRAY') { |
67 | return $self->_recurse_from(@$from); |
68 | } elsif (ref $from eq 'HASH') { |
69 | return $self->_make_as($from); |
70 | } else { |
71 | return $from; |
72 | } |
73 | } |
74 | |
75 | sub _recurse_from { |
76 | my ($self, $from, @join) = @_; |
77 | my @sqlf; |
78 | push(@sqlf, $self->_make_as($from)); |
79 | foreach my $j (@join) { |
80 | my ($to, $on) = @$j; |
73856587 |
81 | |
54540863 |
82 | # check whether a join type exists |
83 | my $join_clause = ''; |
84 | if (ref($to) eq 'HASH' and exists($to->{-join_type})) { |
85 | $join_clause = ' '.uc($to->{-join_type}).' JOIN '; |
86 | } else { |
87 | $join_clause = ' JOIN '; |
88 | } |
73856587 |
89 | push(@sqlf, $join_clause); |
90 | |
bd7efd39 |
91 | if (ref $to eq 'ARRAY') { |
92 | push(@sqlf, '(', $self->_recurse_from(@$to), ')'); |
93 | } else { |
96cdbbab |
94 | push(@sqlf, $self->_make_as($to)); |
bd7efd39 |
95 | } |
96 | push(@sqlf, ' ON ', $self->_join_condition($on)); |
97 | } |
98 | return join('', @sqlf); |
99 | } |
100 | |
101 | sub _make_as { |
102 | my ($self, $from) = @_; |
54540863 |
103 | return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ : $self->_quote($_)) } |
2a816814 |
104 | reverse each %{$self->_skip_options($from)}); |
73856587 |
105 | } |
106 | |
107 | sub _skip_options { |
54540863 |
108 | my ($self, $hash) = @_; |
109 | my $clean_hash = {}; |
110 | $clean_hash->{$_} = $hash->{$_} |
111 | for grep {!/^-/} keys %$hash; |
112 | return $clean_hash; |
bd7efd39 |
113 | } |
114 | |
115 | sub _join_condition { |
116 | my ($self, $cond) = @_; |
117 | die "no chance" unless ref $cond eq 'HASH'; |
118 | my %j; |
2a816814 |
119 | for (keys %$cond) { my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x; }; |
bd7efd39 |
120 | return $self->_recurse_where(\%j); |
121 | } |
122 | |
2a816814 |
123 | sub _quote { |
124 | my ($self, $label) = @_; |
125 | return '' unless defined $label; |
126 | return $self->SUPER::_quote($label); |
127 | } |
128 | |
bd7efd39 |
129 | } # End of BEGIN block |
130 | |
8b445e33 |
131 | use base qw/DBIx::Class/; |
132 | |
438adc0e |
133 | __PACKAGE__->load_components(qw/Exception AccessorGroup/); |
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134 | |
223b8fe3 |
135 | __PACKAGE__->mk_group_accessors('simple' => |
48c69e7c |
136 | qw/connect_info _dbh _sql_maker debug cursor/); |
8b445e33 |
137 | |
8091aa91 |
138 | our $TRANSACTION = 0; |
139 | |
8b445e33 |
140 | sub new { |
223b8fe3 |
141 | my $new = bless({}, ref $_[0] || $_[0]); |
28927b50 |
142 | $new->cursor("DBIx::Class::Storage::DBI::Cursor"); |
143 | $new->debug(1) if $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}; |
223b8fe3 |
144 | return $new; |
8b445e33 |
145 | } |
146 | |
8b445e33 |
147 | =head1 NAME |
148 | |
149 | DBIx::Class::Storage::DBI - DBI storage handler |
150 | |
151 | =head1 SYNOPSIS |
152 | |
153 | =head1 DESCRIPTION |
154 | |
155 | This class represents the connection to the database |
156 | |
157 | =head1 METHODS |
158 | |
8b445e33 |
159 | =cut |
160 | |
161 | sub dbh { |
162 | my ($self) = @_; |
163 | my $dbh; |
164 | unless (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping) { |
165 | $self->_populate_dbh; |
166 | } |
167 | return $self->_dbh; |
168 | } |
169 | |
48c69e7c |
170 | sub sql_maker { |
171 | my ($self) = @_; |
fdc1c3d0 |
172 | unless ($self->_sql_maker) { |
bd7efd39 |
173 | $self->_sql_maker(new DBIC::SQL::Abstract( limit_dialect => $self->dbh )); |
48c69e7c |
174 | } |
175 | return $self->_sql_maker; |
176 | } |
177 | |
8b445e33 |
178 | sub _populate_dbh { |
179 | my ($self) = @_; |
180 | my @info = @{$self->connect_info || []}; |
181 | $self->_dbh($self->_connect(@info)); |
182 | } |
183 | |
184 | sub _connect { |
185 | my ($self, @info) = @_; |
186 | return DBI->connect(@info); |
187 | } |
188 | |
8091aa91 |
189 | =head2 txn_begin |
8b445e33 |
190 | |
8091aa91 |
191 | Calls begin_work on the current dbh. |
8b445e33 |
192 | |
193 | =cut |
194 | |
8091aa91 |
195 | sub txn_begin { |
196 | $_[0]->dbh->begin_work if $TRANSACTION++ == 0 and $_[0]->dbh->{AutoCommit}; |
197 | } |
8b445e33 |
198 | |
8091aa91 |
199 | =head2 txn_commit |
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200 | |
8091aa91 |
201 | Issues a commit against the current dbh. |
8b445e33 |
202 | |
8091aa91 |
203 | =cut |
204 | |
205 | sub txn_commit { |
206 | if ($TRANSACTION == 0) { |
207 | $_[0]->dbh->commit; |
208 | } |
209 | else { |
210 | $_[0]->dbh->commit if --$TRANSACTION == 0; |
211 | } |
212 | } |
213 | |
214 | =head2 txn_rollback |
215 | |
216 | Issues a rollback against the current dbh. |
8b445e33 |
217 | |
218 | =cut |
219 | |
8091aa91 |
220 | sub txn_rollback { |
221 | if ($TRANSACTION == 0) { |
222 | $_[0]->dbh->rollback; |
223 | } |
224 | else { |
225 | --$TRANSACTION == 0 ? $_[0]->dbh->rollback : die $@; |
226 | } |
227 | } |
8b445e33 |
228 | |
223b8fe3 |
229 | sub _execute { |
230 | my ($self, $op, $extra_bind, $ident, @args) = @_; |
231 | my ($sql, @bind) = $self->sql_maker->$op($ident, @args); |
944f30bf |
232 | unshift(@bind, @$extra_bind) if $extra_bind; |
223b8fe3 |
233 | warn "$sql: @bind" if $self->debug; |
2f5911b2 |
234 | my $sth = $self->sth($sql,$op); |
438adc0e |
235 | @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args |
236 | my $rv = $sth->execute(@bind); |
223b8fe3 |
237 | return (wantarray ? ($rv, $sth, @bind) : $rv); |
238 | } |
239 | |
8b445e33 |
240 | sub insert { |
241 | my ($self, $ident, $to_insert) = @_; |
20a2c954 |
242 | $self->throw( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", keys %$to_insert)." into ${ident}" ) |
a4b2f17b |
243 | unless ($self->_execute('insert' => [], $ident, $to_insert)); |
8b445e33 |
244 | return $to_insert; |
245 | } |
246 | |
247 | sub update { |
223b8fe3 |
248 | return shift->_execute('update' => [], @_); |
8b445e33 |
249 | } |
250 | |
251 | sub delete { |
223b8fe3 |
252 | return shift->_execute('delete' => [], @_); |
8b445e33 |
253 | } |
254 | |
de705b51 |
255 | sub _select { |
8b445e33 |
256 | my ($self, $ident, $select, $condition, $attrs) = @_; |
223b8fe3 |
257 | my $order = $attrs->{order_by}; |
258 | if (ref $condition eq 'SCALAR') { |
259 | $order = $1 if $$condition =~ s/ORDER BY (.*)$//i; |
260 | } |
54540863 |
261 | if (exists $attrs->{group_by}) { |
262 | $order = { group_by => $attrs->{group_by}, |
263 | ($order ? (order_by => $order) : ()) }; |
264 | } |
5c91499f |
265 | my @args = ('select', $attrs->{bind}, $ident, $select, $condition, $order); |
9229f20a |
266 | if ($attrs->{software_limit} || |
267 | $self->sql_maker->_default_limit_syntax eq "GenericSubQ") { |
268 | $attrs->{software_limit} = 1; |
5c91499f |
269 | } else { |
270 | push @args, $attrs->{rows}, $attrs->{offset}; |
271 | } |
de705b51 |
272 | return $self->_execute(@args); |
273 | } |
274 | |
275 | sub select { |
276 | my $self = shift; |
277 | my ($ident, $select, $condition, $attrs) = @_; |
278 | my ($rv, $sth, @bind) = $self->_select(@_); |
223b8fe3 |
279 | return $self->cursor->new($sth, \@bind, $attrs); |
8b445e33 |
280 | } |
281 | |
1a14aa3f |
282 | sub select_single { |
de705b51 |
283 | my $self = shift; |
284 | my ($rv, $sth, @bind) = $self->_select(@_); |
1a14aa3f |
285 | return $sth->fetchrow_array; |
286 | } |
287 | |
8b445e33 |
288 | sub sth { |
2f5911b2 |
289 | my ($self, $sql, $op) = @_; |
290 | my $meth = (defined $op && $op ne 'select' ? 'prepare_cached' : 'prepare'); |
291 | return $self->dbh->$meth($sql); |
8b445e33 |
292 | } |
293 | |
294 | 1; |
295 | |
8b445e33 |
296 | =head1 AUTHORS |
297 | |
daec44b8 |
298 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
8b445e33 |
299 | |
9f19b1d6 |
300 | Andy Grundman <andy@hybridized.org> |
301 | |
8b445e33 |
302 | =head1 LICENSE |
303 | |
304 | You may distribute this code under the same terms as Perl itself. |
305 | |
306 | =cut |
307 | |