Commit | Line | Data |
a02675cd |
1 | package DBIx::Class::Schema; |
2 | |
3 | use strict; |
4 | use warnings; |
aa562407 |
5 | |
4981dc70 |
6 | use DBIx::Class::Exception; |
701da8c4 |
7 | use Carp::Clan qw/^DBIx::Class/; |
a917fb06 |
8 | use Scalar::Util qw/weaken/; |
c9d2e0a2 |
9 | use File::Spec; |
ddc0a6c8 |
10 | use Sub::Name (); |
7cb86b38 |
11 | require Module::Find; |
a02675cd |
12 | |
41a6f8c0 |
13 | use base qw/DBIx::Class/; |
a02675cd |
14 | |
0dc79249 |
15 | __PACKAGE__->mk_classdata('class_mappings' => {}); |
16 | __PACKAGE__->mk_classdata('source_registrations' => {}); |
1e10a11d |
17 | __PACKAGE__->mk_classdata('storage_type' => '::DBI'); |
d7156e50 |
18 | __PACKAGE__->mk_classdata('storage'); |
82cc0386 |
19 | __PACKAGE__->mk_classdata('exception_action'); |
4b946902 |
20 | __PACKAGE__->mk_classdata('stacktrace' => $ENV{DBIC_TRACE} || 0); |
e6c747fd |
21 | __PACKAGE__->mk_classdata('default_resultset_attributes' => {}); |
a02675cd |
22 | |
c2da098a |
23 | =head1 NAME |
24 | |
25 | DBIx::Class::Schema - composable schemas |
26 | |
27 | =head1 SYNOPSIS |
28 | |
24d67825 |
29 | package Library::Schema; |
c2da098a |
30 | use base qw/DBIx::Class::Schema/; |
bab77431 |
31 | |
24d67825 |
32 | # load Library::Schema::CD, Library::Schema::Book, Library::Schema::DVD |
33 | __PACKAGE__->load_classes(qw/CD Book DVD/); |
c2da098a |
34 | |
24d67825 |
35 | package Library::Schema::CD; |
03312470 |
36 | use base qw/DBIx::Class/; |
77254782 |
37 | __PACKAGE__->load_components(qw/PK::Auto Core/); # for example |
24d67825 |
38 | __PACKAGE__->table('cd'); |
c2da098a |
39 | |
5d9076f2 |
40 | # Elsewhere in your code: |
24d67825 |
41 | my $schema1 = Library::Schema->connect( |
a3d93194 |
42 | $dsn, |
43 | $user, |
44 | $password, |
24d67825 |
45 | { AutoCommit => 0 }, |
a3d93194 |
46 | ); |
bab77431 |
47 | |
24d67825 |
48 | my $schema2 = Library::Schema->connect($coderef_returning_dbh); |
c2da098a |
49 | |
24d67825 |
50 | # fetch objects using Library::Schema::DVD |
51 | my $resultset = $schema1->resultset('DVD')->search( ... ); |
52 | my @dvd_objects = $schema2->resultset('DVD')->search( ... ); |
c2da098a |
53 | |
54 | =head1 DESCRIPTION |
55 | |
a3d93194 |
56 | Creates database classes based on a schema. This is the recommended way to |
57 | use L<DBIx::Class> and allows you to use more than one concurrent connection |
58 | with your classes. |
429bd4f1 |
59 | |
03312470 |
60 | NB: If you're used to L<Class::DBI> it's worth reading the L</SYNOPSIS> |
2053ab2a |
61 | carefully, as DBIx::Class does things a little differently. Note in |
03312470 |
62 | particular which module inherits off which. |
63 | |
c2da098a |
64 | =head1 METHODS |
65 | |
87c4e602 |
66 | =head2 register_class |
67 | |
27f01d1f |
68 | =over 4 |
69 | |
ebc77b53 |
70 | =item Arguments: $moniker, $component_class |
27f01d1f |
71 | |
72 | =back |
076652e8 |
73 | |
71f9df37 |
74 | Registers a class which isa DBIx::Class::ResultSourceProxy. Equivalent to |
2053ab2a |
75 | calling: |
66d9ef6b |
76 | |
181a28f4 |
77 | $schema->register_source($moniker, $component_class->result_source_instance); |
076652e8 |
78 | |
c2da098a |
79 | =cut |
80 | |
a02675cd |
81 | sub register_class { |
0dc79249 |
82 | my ($self, $moniker, $to_register) = @_; |
83 | $self->register_source($moniker => $to_register->result_source_instance); |
74b92d9a |
84 | } |
85 | |
87c4e602 |
86 | =head2 register_source |
87 | |
27f01d1f |
88 | =over 4 |
89 | |
ebc77b53 |
90 | =item Arguments: $moniker, $result_source |
27f01d1f |
91 | |
92 | =back |
076652e8 |
93 | |
82b01c38 |
94 | Registers the L<DBIx::Class::ResultSource> in the schema with the given |
95 | moniker. |
076652e8 |
96 | |
97 | =cut |
98 | |
0dc79249 |
99 | sub register_source { |
2a4d9487 |
100 | my $self = shift; |
101 | |
102 | $self->_register_source(@_); |
103 | } |
104 | |
105 | =head2 register_extra_source |
106 | |
107 | =over 4 |
108 | |
109 | =item Arguments: $moniker, $result_source |
110 | |
111 | =back |
112 | |
113 | As L</register_source> but should be used if the result class already |
114 | has a source and you want to register an extra one. |
115 | |
116 | =cut |
117 | |
118 | sub register_extra_source { |
119 | my $self = shift; |
120 | |
121 | $self->_register_source(@_, { extra => 1 }); |
122 | } |
123 | |
124 | sub _register_source { |
125 | my ($self, $moniker, $source, $params) = @_; |
93405cf0 |
126 | |
127 | %$source = %{ $source->new( { %$source, source_name => $moniker }) }; |
128 | |
96c95414 |
129 | my %reg = %{$self->source_registrations}; |
130 | $reg{$moniker} = $source; |
131 | $self->source_registrations(\%reg); |
93405cf0 |
132 | |
0dc79249 |
133 | $source->schema($self); |
a917fb06 |
134 | weaken($source->{schema}) if ref($self); |
6eec9003 |
135 | return if ($params->{extra}); |
136 | |
0dc79249 |
137 | if ($source->result_class) { |
96c95414 |
138 | my %map = %{$self->class_mappings}; |
2a4d9487 |
139 | if (exists $map{$source->result_class}) { |
140 | warn $source->result_class . ' already has a source, use register_extra_source for additional sources'; |
141 | } |
96c95414 |
142 | $map{$source->result_class} = $moniker; |
143 | $self->class_mappings(\%map); |
0dc79249 |
144 | } |
75d07914 |
145 | } |
a02675cd |
146 | |
93405cf0 |
147 | sub _unregister_source { |
148 | my ($self, $moniker) = @_; |
149 | my %reg = %{$self->source_registrations}; |
150 | |
151 | my $source = delete $reg{$moniker}; |
152 | $self->source_registrations(\%reg); |
153 | if ($source->result_class) { |
154 | my %map = %{$self->class_mappings}; |
155 | delete $map{$source->result_class}; |
156 | $self->class_mappings(\%map); |
157 | } |
158 | } |
159 | |
bfb2bd4f |
160 | =head2 class |
161 | |
27f01d1f |
162 | =over 4 |
82b01c38 |
163 | |
ebc77b53 |
164 | =item Arguments: $moniker |
27f01d1f |
165 | |
d601dc88 |
166 | =item Return Value: $classname |
27f01d1f |
167 | |
168 | =back |
82b01c38 |
169 | |
2053ab2a |
170 | Retrieves the result class name for the given moniker. For example: |
82b01c38 |
171 | |
172 | my $class = $schema->class('CD'); |
bfb2bd4f |
173 | |
174 | =cut |
175 | |
176 | sub class { |
0dc79249 |
177 | my ($self, $moniker) = @_; |
178 | return $self->source($moniker)->result_class; |
bfb2bd4f |
179 | } |
180 | |
ea20d0fd |
181 | =head2 source |
182 | |
27f01d1f |
183 | =over 4 |
184 | |
ebc77b53 |
185 | =item Arguments: $moniker |
27f01d1f |
186 | |
d601dc88 |
187 | =item Return Value: $result_source |
82b01c38 |
188 | |
27f01d1f |
189 | =back |
82b01c38 |
190 | |
24d67825 |
191 | my $source = $schema->source('Book'); |
ea20d0fd |
192 | |
82b01c38 |
193 | Returns the L<DBIx::Class::ResultSource> object for the registered moniker. |
ea20d0fd |
194 | |
195 | =cut |
196 | |
197 | sub source { |
0dc79249 |
198 | my ($self, $moniker) = @_; |
199 | my $sreg = $self->source_registrations; |
200 | return $sreg->{$moniker} if exists $sreg->{$moniker}; |
201 | |
202 | # if we got here, they probably passed a full class name |
203 | my $mapped = $self->class_mappings->{$moniker}; |
701da8c4 |
204 | $self->throw_exception("Can't find source for ${moniker}") |
0dc79249 |
205 | unless $mapped && exists $sreg->{$mapped}; |
206 | return $sreg->{$mapped}; |
ea20d0fd |
207 | } |
208 | |
0dc79249 |
209 | =head2 sources |
210 | |
27f01d1f |
211 | =over 4 |
212 | |
d601dc88 |
213 | =item Return Value: @source_monikers |
27f01d1f |
214 | |
215 | =back |
82b01c38 |
216 | |
217 | Returns the source monikers of all source registrations on this schema. |
2053ab2a |
218 | For example: |
82b01c38 |
219 | |
220 | my @source_monikers = $schema->sources; |
0dc79249 |
221 | |
222 | =cut |
223 | |
224 | sub sources { return keys %{shift->source_registrations}; } |
225 | |
9b1ba0f2 |
226 | =head2 storage |
227 | |
228 | my $storage = $schema->storage; |
229 | |
230 | Returns the L<DBIx::Class::Storage> object for this Schema. |
231 | |
ea20d0fd |
232 | =head2 resultset |
233 | |
27f01d1f |
234 | =over 4 |
235 | |
ebc77b53 |
236 | =item Arguments: $moniker |
27f01d1f |
237 | |
d601dc88 |
238 | =item Return Value: $result_set |
82b01c38 |
239 | |
27f01d1f |
240 | =back |
82b01c38 |
241 | |
24d67825 |
242 | my $rs = $schema->resultset('DVD'); |
ea20d0fd |
243 | |
82b01c38 |
244 | Returns the L<DBIx::Class::ResultSet> object for the registered moniker. |
ea20d0fd |
245 | |
246 | =cut |
247 | |
248 | sub resultset { |
0dc79249 |
249 | my ($self, $moniker) = @_; |
250 | return $self->source($moniker)->resultset; |
ea20d0fd |
251 | } |
252 | |
87c4e602 |
253 | =head2 load_classes |
254 | |
27f01d1f |
255 | =over 4 |
256 | |
257 | =item Arguments: @classes?, { $namespace => [ @classes ] }+ |
258 | |
259 | =back |
076652e8 |
260 | |
82b01c38 |
261 | With no arguments, this method uses L<Module::Find> to find all classes under |
262 | the schema's namespace. Otherwise, this method loads the classes you specify |
263 | (using L<use>), and registers them (using L</"register_class">). |
076652e8 |
264 | |
2053ab2a |
265 | It is possible to comment out classes with a leading C<#>, but note that perl |
266 | will think it's a mistake (trying to use a comment in a qw list), so you'll |
267 | need to add C<no warnings 'qw';> before your load_classes call. |
5ce32fc1 |
268 | |
2053ab2a |
269 | Example: |
82b01c38 |
270 | |
271 | My::Schema->load_classes(); # loads My::Schema::CD, My::Schema::Artist, |
75d07914 |
272 | # etc. (anything under the My::Schema namespace) |
82b01c38 |
273 | |
274 | # loads My::Schema::CD, My::Schema::Artist, Other::Namespace::Producer but |
275 | # not Other::Namespace::LinerNotes nor My::Schema::Track |
276 | My::Schema->load_classes(qw/ CD Artist #Track /, { |
277 | Other::Namespace => [qw/ Producer #LinerNotes /], |
278 | }); |
279 | |
076652e8 |
280 | =cut |
281 | |
a02675cd |
282 | sub load_classes { |
5ce32fc1 |
283 | my ($class, @params) = @_; |
bab77431 |
284 | |
5ce32fc1 |
285 | my %comps_for; |
bab77431 |
286 | |
5ce32fc1 |
287 | if (@params) { |
288 | foreach my $param (@params) { |
289 | if (ref $param eq 'ARRAY') { |
290 | # filter out commented entries |
291 | my @modules = grep { $_ !~ /^#/ } @$param; |
bab77431 |
292 | |
5ce32fc1 |
293 | push (@{$comps_for{$class}}, @modules); |
294 | } |
295 | elsif (ref $param eq 'HASH') { |
296 | # more than one namespace possible |
297 | for my $comp ( keys %$param ) { |
298 | # filter out commented entries |
299 | my @modules = grep { $_ !~ /^#/ } @{$param->{$comp}}; |
300 | |
301 | push (@{$comps_for{$comp}}, @modules); |
302 | } |
303 | } |
304 | else { |
305 | # filter out commented entries |
306 | push (@{$comps_for{$class}}, $param) if $param !~ /^#/; |
307 | } |
308 | } |
309 | } else { |
bc0c9800 |
310 | my @comp = map { substr $_, length "${class}::" } |
311 | Module::Find::findallmod($class); |
5ce32fc1 |
312 | $comps_for{$class} = \@comp; |
41a6f8c0 |
313 | } |
5ce32fc1 |
314 | |
e6efde04 |
315 | my @to_register; |
316 | { |
317 | no warnings qw/redefine/; |
318 | local *Class::C3::reinitialize = sub { }; |
319 | foreach my $prefix (keys %comps_for) { |
320 | foreach my $comp (@{$comps_for{$prefix}||[]}) { |
321 | my $comp_class = "${prefix}::${comp}"; |
83542a7d |
322 | { # try to untaint module name. mods where this fails |
323 | # are left alone so we don't have to change the old behavior |
324 | no locale; # localized \w doesn't untaint expression |
325 | if ( $comp_class =~ m/^( (?:\w+::)* \w+ )$/x ) { |
326 | $comp_class = $1; |
327 | } |
328 | } |
c037c03a |
329 | $class->ensure_class_loaded($comp_class); |
bab77431 |
330 | |
93405cf0 |
331 | $comp = $comp_class->source_name || $comp; |
332 | # $DB::single = 1; |
333 | push(@to_register, [ $comp, $comp_class ]); |
bfb2bd4f |
334 | } |
5ce32fc1 |
335 | } |
a02675cd |
336 | } |
e6efde04 |
337 | Class::C3->reinitialize; |
338 | |
339 | foreach my $to (@to_register) { |
340 | $class->register_class(@$to); |
341 | # if $class->can('result_source_instance'); |
342 | } |
a02675cd |
343 | } |
344 | |
2374c5ff |
345 | =head2 load_namespaces |
346 | |
347 | =over 4 |
348 | |
85bd0538 |
349 | =item Arguments: %options? |
2374c5ff |
350 | |
351 | =back |
352 | |
353 | This is an alternative to L</load_classes> above which assumes an alternative |
c87014e8 |
354 | layout for automatic class loading. It assumes that all result |
355 | classes are underneath a sub-namespace of the schema called C<Result>, any |
7a58f051 |
356 | corresponding ResultSet classes are underneath a sub-namespace of the schema |
46a05fd4 |
357 | called C<ResultSet>. |
2374c5ff |
358 | |
46a05fd4 |
359 | Both of the sub-namespaces are configurable if you don't like the defaults, |
c87014e8 |
360 | via the options C<result_namespace> and C<resultset_namespace>. |
85bd0538 |
361 | |
25fb14bd |
362 | If (and only if) you specify the option C<default_resultset_class>, any found |
c87014e8 |
363 | Result classes for which we do not find a corresponding |
25fb14bd |
364 | ResultSet class will have their C<resultset_class> set to |
365 | C<default_resultset_class>. |
0f4ec1d2 |
366 | |
46a05fd4 |
367 | C<load_namespaces> takes care of calling C<resultset_class> for you where |
368 | neccessary if you didn't do it for yourself. |
f017c022 |
369 | |
0f4ec1d2 |
370 | All of the namespace and classname options to this method are relative to |
371 | the schema classname by default. To specify a fully-qualified name, prefix |
372 | it with a literal C<+>. |
2374c5ff |
373 | |
f017c022 |
374 | Examples: |
2374c5ff |
375 | |
c87014e8 |
376 | # load My::Schema::Result::CD, My::Schema::Result::Artist, |
2374c5ff |
377 | # My::Schema::ResultSet::CD, etc... |
0f4ec1d2 |
378 | My::Schema->load_namespaces; |
379 | |
c87014e8 |
380 | # Override everything to use ugly names. |
381 | # In this example, if there is a My::Schema::Res::Foo, but no matching |
382 | # My::Schema::RSets::Foo, then Foo will have its |
383 | # resultset_class set to My::Schema::RSetBase |
0f4ec1d2 |
384 | My::Schema->load_namespaces( |
c87014e8 |
385 | result_namespace => 'Res', |
0f4ec1d2 |
386 | resultset_namespace => 'RSets', |
25fb14bd |
387 | default_resultset_class => 'RSetBase', |
0f4ec1d2 |
388 | ); |
2374c5ff |
389 | |
0f4ec1d2 |
390 | # Put things in other namespaces |
85bd0538 |
391 | My::Schema->load_namespaces( |
c87014e8 |
392 | result_namespace => '+Some::Place::Results', |
0f4ec1d2 |
393 | resultset_namespace => '+Another::Place::RSets', |
85bd0538 |
394 | ); |
0f4ec1d2 |
395 | |
f017c022 |
396 | If you'd like to use multiple namespaces of each type, simply use an arrayref |
c87014e8 |
397 | of namespaces for that option. In the case that the same result |
46a05fd4 |
398 | (or resultset) class exists in multiple namespaces, the latter entries in |
399 | your list of namespaces will override earlier ones. |
f017c022 |
400 | |
401 | My::Schema->load_namespaces( |
c87014e8 |
402 | # My::Schema::Results_C::Foo takes precedence over My::Schema::Results_B::Foo : |
403 | result_namespace => [ 'Results_A', 'Results_B', 'Results_C' ], |
f017c022 |
404 | resultset_namespace => [ '+Some::Place::RSets', 'RSets' ], |
405 | ); |
85bd0538 |
406 | |
2374c5ff |
407 | =cut |
408 | |
f017c022 |
409 | # Pre-pends our classname to the given relative classname or |
410 | # class namespace, unless there is a '+' prefix, which will |
7a58f051 |
411 | # be stripped. |
f017c022 |
412 | sub _expand_relative_name { |
7a58f051 |
413 | my ($class, $name) = @_; |
414 | return if !$name; |
415 | $name = $class . '::' . $name if ! ($name =~ s/^\+//); |
416 | return $name; |
f017c022 |
417 | } |
418 | |
419 | # returns a hash of $shortname => $fullname for every package |
420 | # found in the given namespaces ($shortname is with the $fullname's |
421 | # namespace stripped off) |
422 | sub _map_namespaces { |
423 | my ($class, @namespaces) = @_; |
424 | |
425 | my @results_hash; |
426 | foreach my $namespace (@namespaces) { |
427 | push( |
428 | @results_hash, |
429 | map { (substr($_, length "${namespace}::"), $_) } |
430 | Module::Find::findallmod($namespace) |
431 | ); |
432 | } |
433 | |
434 | @results_hash; |
435 | } |
436 | |
2374c5ff |
437 | sub load_namespaces { |
85bd0538 |
438 | my ($class, %args) = @_; |
2374c5ff |
439 | |
c87014e8 |
440 | my $result_namespace = delete $args{result_namespace} || 'Result'; |
25fb14bd |
441 | my $resultset_namespace = delete $args{resultset_namespace} || 'ResultSet'; |
25fb14bd |
442 | my $default_resultset_class = delete $args{default_resultset_class}; |
0f4ec1d2 |
443 | |
25fb14bd |
444 | $class->throw_exception('load_namespaces: unknown option(s): ' |
445 | . join(q{,}, map { qq{'$_'} } keys %args)) |
446 | if scalar keys %args; |
447 | |
7a58f051 |
448 | $default_resultset_class |
449 | = $class->_expand_relative_name($default_resultset_class); |
f017c022 |
450 | |
c87014e8 |
451 | for my $arg ($result_namespace, $resultset_namespace) { |
f017c022 |
452 | $arg = [ $arg ] if !ref($arg) && $arg; |
2374c5ff |
453 | |
f017c022 |
454 | $class->throw_exception('load_namespaces: namespace arguments must be ' |
455 | . 'a simple string or an arrayref') |
456 | if ref($arg) ne 'ARRAY'; |
2374c5ff |
457 | |
7a58f051 |
458 | $_ = $class->_expand_relative_name($_) for (@$arg); |
f017c022 |
459 | } |
2374c5ff |
460 | |
c87014e8 |
461 | my %results = $class->_map_namespaces(@$result_namespace); |
f017c022 |
462 | my %resultsets = $class->_map_namespaces(@$resultset_namespace); |
0f4ec1d2 |
463 | |
2374c5ff |
464 | my @to_register; |
465 | { |
25fb14bd |
466 | no warnings 'redefine'; |
2374c5ff |
467 | local *Class::C3::reinitialize = sub { }; |
25fb14bd |
468 | use warnings 'redefine'; |
0f4ec1d2 |
469 | |
c87014e8 |
470 | foreach my $result (keys %results) { |
471 | my $result_class = $results{$result}; |
472 | $class->ensure_class_loaded($result_class); |
473 | $result_class->source_name($result) unless $result_class->source_name; |
0f4ec1d2 |
474 | |
c87014e8 |
475 | my $rs_class = delete $resultsets{$result}; |
476 | my $rs_set = $result_class->resultset_class; |
25fb14bd |
477 | if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') { |
f017c022 |
478 | if($rs_class && $rs_class ne $rs_set) { |
c87014e8 |
479 | warn "We found ResultSet class '$rs_class' for '$result', but it seems " |
480 | . "that you had already set '$result' to use '$rs_set' instead"; |
2374c5ff |
481 | } |
482 | } |
25fb14bd |
483 | elsif($rs_class ||= $default_resultset_class) { |
484 | $class->ensure_class_loaded($rs_class); |
c87014e8 |
485 | $result_class->resultset_class($rs_class); |
0f4ec1d2 |
486 | } |
2374c5ff |
487 | |
c87014e8 |
488 | push(@to_register, [ $result_class->source_name, $result_class ]); |
2374c5ff |
489 | } |
490 | } |
491 | |
0f4ec1d2 |
492 | foreach (sort keys %resultsets) { |
493 | warn "load_namespaces found ResultSet class $_ with no " |
c87014e8 |
494 | . 'corresponding Result class'; |
2374c5ff |
495 | } |
0f4ec1d2 |
496 | |
fdcd8145 |
497 | Class::C3->reinitialize; |
498 | $class->register_class(@$_) for (@to_register); |
499 | |
0f4ec1d2 |
500 | return; |
2374c5ff |
501 | } |
502 | |
c216324a |
503 | =head2 compose_connection (DEPRECATED) |
87c4e602 |
504 | |
27f01d1f |
505 | =over 4 |
506 | |
ebc77b53 |
507 | =item Arguments: $target_namespace, @db_info |
429bd4f1 |
508 | |
d601dc88 |
509 | =item Return Value: $new_schema |
27f01d1f |
510 | |
511 | =back |
076652e8 |
512 | |
c216324a |
513 | DEPRECATED. You probably wanted compose_namespace. |
514 | |
515 | Actually, you probably just wanted to call connect. |
516 | |
1c133e22 |
517 | =begin hidden |
518 | |
519 | (hidden due to deprecation) |
c216324a |
520 | |
2053ab2a |
521 | Calls L<DBIx::Class::Schema/"compose_namespace"> to the target namespace, |
522 | calls L<DBIx::Class::Schema/connection> with @db_info on the new schema, |
523 | then injects the L<DBix::Class::ResultSetProxy> component and a |
524 | resultset_instance classdata entry on all the new classes, in order to support |
82b01c38 |
525 | $target_namespaces::$class->search(...) method calls. |
526 | |
527 | This is primarily useful when you have a specific need for class method access |
528 | to a connection. In normal usage it is preferred to call |
529 | L<DBIx::Class::Schema/connect> and use the resulting schema object to operate |
530 | on L<DBIx::Class::ResultSet> objects with L<DBIx::Class::Schema/resultset> for |
531 | more information. |
54540863 |
532 | |
1c133e22 |
533 | =end hidden |
534 | |
076652e8 |
535 | =cut |
536 | |
c216324a |
537 | { |
538 | my $warn; |
539 | |
540 | sub compose_connection { |
541 | my ($self, $target, @info) = @_; |
542 | |
3943fd63 |
543 | warn "compose_connection deprecated as of 0.08000" |
544 | unless ($INC{"DBIx/Class/CDBICompat.pm"} || $warn++); |
c216324a |
545 | |
546 | my $base = 'DBIx::Class::ResultSetProxy'; |
547 | eval "require ${base};"; |
548 | $self->throw_exception |
549 | ("No arguments to load_classes and couldn't load ${base} ($@)") |
550 | if $@; |
551 | |
552 | if ($self eq $target) { |
553 | # Pathological case, largely caused by the docs on early C::M::DBIC::Plain |
554 | foreach my $moniker ($self->sources) { |
555 | my $source = $self->source($moniker); |
556 | my $class = $source->result_class; |
557 | $self->inject_base($class, $base); |
558 | $class->mk_classdata(resultset_instance => $source->resultset); |
559 | $class->mk_classdata(class_resolver => $self); |
560 | } |
561 | $self->connection(@info); |
562 | return $self; |
563 | } |
564 | |
565 | my $schema = $self->compose_namespace($target, $base); |
566 | { |
567 | no strict 'refs'; |
ddc0a6c8 |
568 | my $name = join '::', $target, 'schema'; |
569 | *$name = Sub::Name::subname $name, sub { $schema }; |
c216324a |
570 | } |
571 | |
572 | $schema->connection(@info); |
573 | foreach my $moniker ($schema->sources) { |
574 | my $source = $schema->source($moniker); |
be381829 |
575 | my $class = $source->result_class; |
c216324a |
576 | #warn "$moniker $class $source ".$source->storage; |
577 | $class->mk_classdata(result_source_instance => $source); |
be381829 |
578 | $class->mk_classdata(resultset_instance => $source->resultset); |
c216324a |
579 | $class->mk_classdata(class_resolver => $schema); |
be381829 |
580 | } |
c216324a |
581 | return $schema; |
bfb2bd4f |
582 | } |
e678398e |
583 | } |
584 | |
77254782 |
585 | =head2 compose_namespace |
586 | |
27f01d1f |
587 | =over 4 |
588 | |
589 | =item Arguments: $target_namespace, $additional_base_class? |
82b01c38 |
590 | |
d601dc88 |
591 | =item Return Value: $new_schema |
27f01d1f |
592 | |
593 | =back |
13765dad |
594 | |
82b01c38 |
595 | For each L<DBIx::Class::ResultSource> in the schema, this method creates a |
596 | class in the target namespace (e.g. $target_namespace::CD, |
597 | $target_namespace::Artist) that inherits from the corresponding classes |
598 | attached to the current schema. |
77254782 |
599 | |
82b01c38 |
600 | It also attaches a corresponding L<DBIx::Class::ResultSource> object to the |
601 | new $schema object. If C<$additional_base_class> is given, the new composed |
602 | classes will inherit from first the corresponding classe from the current |
603 | schema then the base class. |
604 | |
2053ab2a |
605 | For example, for a schema with My::Schema::CD and My::Schema::Artist classes, |
82b01c38 |
606 | |
607 | $schema->compose_namespace('My::DB', 'Base::Class'); |
608 | print join (', ', @My::DB::CD::ISA) . "\n"; |
609 | print join (', ', @My::DB::Artist::ISA) ."\n"; |
610 | |
2053ab2a |
611 | will produce the output |
82b01c38 |
612 | |
613 | My::Schema::CD, Base::Class |
614 | My::Schema::Artist, Base::Class |
77254782 |
615 | |
616 | =cut |
617 | |
e678398e |
618 | sub compose_namespace { |
66d9ef6b |
619 | my ($self, $target, $base) = @_; |
6eec9003 |
620 | |
621 | $self = $self->clone; |
622 | foreach my $moniker ($self->sources) { |
623 | my $source = $self->source($moniker); |
624 | my $source_class = ref $source; |
625 | my $source_copy = $source_class->new({ |
626 | %$source, |
627 | _relationships => Storable::dclone( $source->_relationships ), |
628 | }); |
629 | |
630 | my $target_class = "${target}::${moniker}"; |
631 | $self->inject_base( |
632 | $target_class => $source_copy->result_class, ($base ? $base : ()) |
633 | ); |
634 | $source_copy->result_class($target_class); |
635 | $self->register_source($moniker, $source_copy); |
11b78bd6 |
636 | } |
6eec9003 |
637 | return $self; |
b7951443 |
638 | } |
639 | |
640 | sub setup_connection_class { |
641 | my ($class, $target, @info) = @_; |
63e9583a |
642 | $class->inject_base($target => 'DBIx::Class::DB'); |
643 | #$target->load_components('DB'); |
b7951443 |
644 | $target->connection(@info); |
645 | } |
646 | |
6b43ba5f |
647 | =head2 storage_type |
648 | |
649 | =over 4 |
650 | |
161fb223 |
651 | =item Arguments: $storage_type|{$storage_type, \%args} |
6b43ba5f |
652 | |
161fb223 |
653 | =item Return Value: $storage_type|{$storage_type, \%args} |
6b43ba5f |
654 | |
655 | =back |
656 | |
657 | Set the storage class that will be instantiated when L</connect> is called. |
658 | If the classname starts with C<::>, the prefix C<DBIx::Class::Storage> is |
659 | assumed by L</connect>. Defaults to C<::DBI>, |
660 | which is L<DBIx::Class::Storage::DBI>. |
661 | |
662 | You want to use this to hardcoded subclasses of L<DBIx::Class::Storage::DBI> |
663 | in cases where the appropriate subclass is not autodetected, such as when |
664 | dealing with MSSQL via L<DBD::Sybase>, in which case you'd set it to |
665 | C<::DBI::Sybase::MSSQL>. |
666 | |
106d5f3b |
667 | If your storage type requires instantiation arguments, those are defined as a |
668 | second argument in the form of a hashref and the entire value needs to be |
161fb223 |
669 | wrapped into an arrayref or a hashref. We support both types of refs here in |
670 | order to play nice with your Config::[class] or your choice. |
671 | |
672 | See L<DBIx::Class::Storage::DBI::Replicated> for an example of this. |
106d5f3b |
673 | |
87c4e602 |
674 | =head2 connection |
675 | |
27f01d1f |
676 | =over 4 |
677 | |
ebc77b53 |
678 | =item Arguments: @args |
66d9ef6b |
679 | |
d601dc88 |
680 | =item Return Value: $new_schema |
27f01d1f |
681 | |
682 | =back |
82b01c38 |
683 | |
684 | Instantiates a new Storage object of type |
685 | L<DBIx::Class::Schema/"storage_type"> and passes the arguments to |
85f78622 |
686 | $storage->connect_info. Sets the connection in-place on the schema. |
687 | |
688 | See L<DBIx::Class::Storage::DBI/"connect_info"> for DBI-specific syntax, |
689 | or L<DBIx::Class::Storage> in general. |
66d9ef6b |
690 | |
691 | =cut |
692 | |
693 | sub connection { |
694 | my ($self, @info) = @_; |
e59d3e5b |
695 | return $self if !@info && $self->storage; |
106d5f3b |
696 | |
697 | my ($storage_class, $args) = ref $self->storage_type ? |
161fb223 |
698 | ($self->_normalize_storage_type($self->storage_type),{}) : ($self->storage_type, {}); |
106d5f3b |
699 | |
1e10a11d |
700 | $storage_class = 'DBIx::Class::Storage'.$storage_class |
701 | if $storage_class =~ m/^::/; |
8ef144ff |
702 | eval "require ${storage_class};"; |
bc0c9800 |
703 | $self->throw_exception( |
704 | "No arguments to load_classes and couldn't load ${storage_class} ($@)" |
705 | ) if $@; |
106d5f3b |
706 | my $storage = $storage_class->new($self=>$args); |
66d9ef6b |
707 | $storage->connect_info(\@info); |
708 | $self->storage($storage); |
709 | return $self; |
710 | } |
711 | |
161fb223 |
712 | sub _normalize_storage_type { |
64cdad22 |
713 | my ($self, $storage_type) = @_; |
714 | if(ref $storage_type eq 'ARRAY') { |
715 | return @$storage_type; |
716 | } elsif(ref $storage_type eq 'HASH') { |
717 | return %$storage_type; |
718 | } else { |
719 | $self->throw_exception('Unsupported REFTYPE given: '. ref $storage_type); |
720 | } |
161fb223 |
721 | } |
722 | |
87c4e602 |
723 | =head2 connect |
724 | |
27f01d1f |
725 | =over 4 |
726 | |
ebc77b53 |
727 | =item Arguments: @info |
66d9ef6b |
728 | |
d601dc88 |
729 | =item Return Value: $new_schema |
27f01d1f |
730 | |
731 | =back |
82b01c38 |
732 | |
733 | This is a convenience method. It is equivalent to calling |
734 | $schema->clone->connection(@info). See L</connection> and L</clone> for more |
735 | information. |
66d9ef6b |
736 | |
737 | =cut |
738 | |
08b515f1 |
739 | sub connect { shift->clone->connection(@_) } |
740 | |
4012acd8 |
741 | =head2 txn_do |
08b515f1 |
742 | |
4012acd8 |
743 | =over 4 |
08b515f1 |
744 | |
4012acd8 |
745 | =item Arguments: C<$coderef>, @coderef_args? |
08b515f1 |
746 | |
4012acd8 |
747 | =item Return Value: The return value of $coderef |
08b515f1 |
748 | |
4012acd8 |
749 | =back |
08b515f1 |
750 | |
4012acd8 |
751 | Executes C<$coderef> with (optional) arguments C<@coderef_args> atomically, |
752 | returning its result (if any). Equivalent to calling $schema->storage->txn_do. |
753 | See L<DBIx::Class::Storage/"txn_do"> for more information. |
08b515f1 |
754 | |
4012acd8 |
755 | This interface is preferred over using the individual methods L</txn_begin>, |
756 | L</txn_commit>, and L</txn_rollback> below. |
08b515f1 |
757 | |
4012acd8 |
758 | =cut |
08b515f1 |
759 | |
4012acd8 |
760 | sub txn_do { |
761 | my $self = shift; |
08b515f1 |
762 | |
4012acd8 |
763 | $self->storage or $self->throw_exception |
764 | ('txn_do called on $schema without storage'); |
08b515f1 |
765 | |
4012acd8 |
766 | $self->storage->txn_do(@_); |
767 | } |
66d9ef6b |
768 | |
89028f42 |
769 | =head2 txn_scope_guard (EXPERIMENTAL) |
75c8a7ab |
770 | |
89028f42 |
771 | Runs C<txn_scope_guard> on the schema's storage. See |
772 | L<DBIx::Class::Storage/txn_scope_guard>. |
75c8a7ab |
773 | |
b85be4c1 |
774 | =cut |
775 | |
1bc193ac |
776 | sub txn_scope_guard { |
777 | my $self = shift; |
778 | |
779 | $self->storage or $self->throw_exception |
780 | ('txn_scope_guard called on $schema without storage'); |
781 | |
782 | $self->storage->txn_scope_guard(@_); |
783 | } |
784 | |
4012acd8 |
785 | =head2 txn_begin |
a62cf8d4 |
786 | |
4012acd8 |
787 | Begins a transaction (does nothing if AutoCommit is off). Equivalent to |
788 | calling $schema->storage->txn_begin. See |
789 | L<DBIx::Class::Storage::DBI/"txn_begin"> for more information. |
27f01d1f |
790 | |
4012acd8 |
791 | =cut |
82b01c38 |
792 | |
4012acd8 |
793 | sub txn_begin { |
794 | my $self = shift; |
27f01d1f |
795 | |
4012acd8 |
796 | $self->storage or $self->throw_exception |
797 | ('txn_begin called on $schema without storage'); |
a62cf8d4 |
798 | |
4012acd8 |
799 | $self->storage->txn_begin; |
800 | } |
a62cf8d4 |
801 | |
4012acd8 |
802 | =head2 txn_commit |
a62cf8d4 |
803 | |
4012acd8 |
804 | Commits the current transaction. Equivalent to calling |
805 | $schema->storage->txn_commit. See L<DBIx::Class::Storage::DBI/"txn_commit"> |
806 | for more information. |
a62cf8d4 |
807 | |
4012acd8 |
808 | =cut |
a62cf8d4 |
809 | |
4012acd8 |
810 | sub txn_commit { |
811 | my $self = shift; |
a62cf8d4 |
812 | |
4012acd8 |
813 | $self->storage or $self->throw_exception |
814 | ('txn_commit called on $schema without storage'); |
a62cf8d4 |
815 | |
4012acd8 |
816 | $self->storage->txn_commit; |
817 | } |
70634260 |
818 | |
4012acd8 |
819 | =head2 txn_rollback |
a62cf8d4 |
820 | |
4012acd8 |
821 | Rolls back the current transaction. Equivalent to calling |
822 | $schema->storage->txn_rollback. See |
823 | L<DBIx::Class::Storage::DBI/"txn_rollback"> for more information. |
a62cf8d4 |
824 | |
825 | =cut |
826 | |
4012acd8 |
827 | sub txn_rollback { |
828 | my $self = shift; |
a62cf8d4 |
829 | |
19630353 |
830 | $self->storage or $self->throw_exception |
4012acd8 |
831 | ('txn_rollback called on $schema without storage'); |
a62cf8d4 |
832 | |
4012acd8 |
833 | $self->storage->txn_rollback; |
a62cf8d4 |
834 | } |
835 | |
adb3554a |
836 | =head2 svp_begin |
837 | |
838 | Creates a new savepoint (does nothing outside a transaction). |
839 | Equivalent to calling $schema->storage->svp_begin. See |
840 | L<DBIx::Class::Storage::DBI/"svp_begin"> for more information. |
841 | |
842 | =cut |
843 | |
844 | sub svp_begin { |
845 | my ($self, $name) = @_; |
846 | |
847 | $self->storage or $self->throw_exception |
848 | ('svp_begin called on $schema without storage'); |
849 | |
850 | $self->storage->svp_begin($name); |
851 | } |
852 | |
853 | =head2 svp_release |
854 | |
855 | Releases a savepoint (does nothing outside a transaction). |
856 | Equivalent to calling $schema->storage->svp_release. See |
857 | L<DBIx::Class::Storage::DBI/"svp_release"> for more information. |
858 | |
859 | =cut |
860 | |
861 | sub svp_release { |
862 | my ($self, $name) = @_; |
863 | |
864 | $self->storage or $self->throw_exception |
865 | ('svp_release called on $schema without storage'); |
866 | |
867 | $self->storage->svp_release($name); |
868 | } |
869 | |
870 | =head2 svp_rollback |
871 | |
872 | Rollback to a savepoint (does nothing outside a transaction). |
873 | Equivalent to calling $schema->storage->svp_rollback. See |
874 | L<DBIx::Class::Storage::DBI/"svp_rollback"> for more information. |
875 | |
876 | =cut |
877 | |
878 | sub svp_rollback { |
879 | my ($self, $name) = @_; |
880 | |
881 | $self->storage or $self->throw_exception |
882 | ('svp_rollback called on $schema without storage'); |
883 | |
884 | $self->storage->svp_rollback($name); |
885 | } |
886 | |
66d9ef6b |
887 | =head2 clone |
888 | |
27f01d1f |
889 | =over 4 |
890 | |
d601dc88 |
891 | =item Return Value: $new_schema |
27f01d1f |
892 | |
893 | =back |
82b01c38 |
894 | |
66d9ef6b |
895 | Clones the schema and its associated result_source objects and returns the |
896 | copy. |
897 | |
898 | =cut |
899 | |
900 | sub clone { |
901 | my ($self) = @_; |
04786a4c |
902 | my $clone = { (ref $self ? %$self : ()) }; |
903 | bless $clone, (ref $self || $self); |
904 | |
73529292 |
905 | $clone->class_mappings({ %{$clone->class_mappings} }); |
906 | $clone->source_registrations({ %{$clone->source_registrations} }); |
66d9ef6b |
907 | foreach my $moniker ($self->sources) { |
908 | my $source = $self->source($moniker); |
909 | my $new = $source->new($source); |
95120bb5 |
910 | # we use extra here as we want to leave the class_mappings as they are |
911 | # but overwrite the source_registrations entry with the new source |
912 | $clone->register_extra_source($moniker => $new); |
66d9ef6b |
913 | } |
82cc0386 |
914 | $clone->storage->set_schema($clone) if $clone->storage; |
66d9ef6b |
915 | return $clone; |
916 | } |
917 | |
87c4e602 |
918 | =head2 populate |
919 | |
27f01d1f |
920 | =over 4 |
921 | |
16c5f7d3 |
922 | =item Arguments: $source_name, \@data; |
27f01d1f |
923 | |
924 | =back |
a37a4697 |
925 | |
16c5f7d3 |
926 | Pass this method a resultsource name, and an arrayref of |
927 | arrayrefs. The arrayrefs should contain a list of column names, |
928 | followed by one or many sets of matching data for the given columns. |
929 | |
744076d8 |
930 | In void context, C<insert_bulk> in L<DBIx::Class::Storage::DBI> is used |
931 | to insert the data, as this is a fast method. However, insert_bulk currently |
932 | assumes that your datasets all contain the same type of values, using scalar |
933 | references in a column in one row, and not in another will probably not work. |
934 | |
935 | Otherwise, each set of data is inserted into the database using |
16c5f7d3 |
936 | L<DBIx::Class::ResultSet/create>, and a arrayref of the resulting row |
937 | objects is returned. |
82b01c38 |
938 | |
939 | i.e., |
a37a4697 |
940 | |
24d67825 |
941 | $schema->populate('Artist', [ |
942 | [ qw/artistid name/ ], |
943 | [ 1, 'Popular Band' ], |
944 | [ 2, 'Indie Band' ], |
a62cf8d4 |
945 | ... |
946 | ]); |
5a93e138 |
947 | |
948 | Since wantarray context is basically the same as looping over $rs->create(...) |
949 | you won't see any performance benefits and in this case the method is more for |
950 | convenience. Void context sends the column information directly to storage |
951 | using <DBI>s bulk insert method. So the performance will be much better for |
952 | storages that support this method. |
953 | |
954 | Because of this difference in the way void context inserts rows into your |
955 | database you need to note how this will effect any loaded components that |
956 | override or augment insert. For example if you are using a component such |
957 | as L<DBIx::Class::UUIDColumns> to populate your primary keys you MUST use |
958 | wantarray context if you want the PKs automatically created. |
a37a4697 |
959 | |
960 | =cut |
961 | |
962 | sub populate { |
963 | my ($self, $name, $data) = @_; |
964 | my $rs = $self->resultset($name); |
965 | my @names = @{shift(@$data)}; |
54e0bd06 |
966 | if(defined wantarray) { |
967 | my @created; |
968 | foreach my $item (@$data) { |
969 | my %create; |
970 | @create{@names} = @$item; |
971 | push(@created, $rs->create(\%create)); |
972 | } |
973 | return @created; |
a37a4697 |
974 | } |
8b93a938 |
975 | my @results_to_create; |
976 | foreach my $datum (@$data) { |
977 | my %result_to_create; |
978 | foreach my $index (0..$#names) { |
979 | $result_to_create{$names[$index]} = $$datum[$index]; |
980 | } |
981 | push @results_to_create, \%result_to_create; |
982 | } |
983 | $rs->populate(\@results_to_create); |
a37a4697 |
984 | } |
985 | |
82cc0386 |
986 | =head2 exception_action |
987 | |
988 | =over 4 |
989 | |
990 | =item Arguments: $code_reference |
991 | |
992 | =back |
993 | |
db5dc233 |
994 | If C<exception_action> is set for this class/object, L</throw_exception> |
995 | will prefer to call this code reference with the exception as an argument, |
613397e7 |
996 | rather than its normal C<croak> or C<confess> action. |
db5dc233 |
997 | |
998 | Your subroutine should probably just wrap the error in the exception |
999 | object/class of your choosing and rethrow. If, against all sage advice, |
1000 | you'd like your C<exception_action> to suppress a particular exception |
1001 | completely, simply have it return true. |
82cc0386 |
1002 | |
1003 | Example: |
1004 | |
1005 | package My::Schema; |
1006 | use base qw/DBIx::Class::Schema/; |
1007 | use My::ExceptionClass; |
1008 | __PACKAGE__->exception_action(sub { My::ExceptionClass->throw(@_) }); |
1009 | __PACKAGE__->load_classes; |
1010 | |
db5dc233 |
1011 | # or: |
82cc0386 |
1012 | my $schema_obj = My::Schema->connect( .... ); |
1013 | $schema_obj->exception_action(sub { My::ExceptionClass->throw(@_) }); |
1014 | |
db5dc233 |
1015 | # suppress all exceptions, like a moron: |
1016 | $schema_obj->exception_action(sub { 1 }); |
1017 | |
613397e7 |
1018 | =head2 stacktrace |
1019 | |
84c5863b |
1020 | =over 4 |
613397e7 |
1021 | |
1022 | =item Arguments: boolean |
1023 | |
1024 | =back |
1025 | |
4981dc70 |
1026 | Whether L</throw_exception> should include stack trace information. |
4b946902 |
1027 | Defaults to false normally, but defaults to true if C<$ENV{DBIC_TRACE}> |
1028 | is true. |
613397e7 |
1029 | |
5160b401 |
1030 | =head2 throw_exception |
701da8c4 |
1031 | |
75d07914 |
1032 | =over 4 |
82b01c38 |
1033 | |
ebc77b53 |
1034 | =item Arguments: $message |
82b01c38 |
1035 | |
1036 | =back |
1037 | |
1038 | Throws an exception. Defaults to using L<Carp::Clan> to report errors from |
db5dc233 |
1039 | user's perspective. See L</exception_action> for details on overriding |
4b946902 |
1040 | this method's behavior. If L</stacktrace> is turned on, C<throw_exception>'s |
1041 | default behavior will provide a detailed stack trace. |
701da8c4 |
1042 | |
1043 | =cut |
1044 | |
1045 | sub throw_exception { |
82cc0386 |
1046 | my $self = shift; |
4981dc70 |
1047 | |
1048 | DBIx::Class::Exception->throw($_[0], $self->stacktrace) |
1049 | if !$self->exception_action || !$self->exception_action->(@_); |
701da8c4 |
1050 | } |
1051 | |
dfccde48 |
1052 | =head2 deploy |
1c339d71 |
1053 | |
82b01c38 |
1054 | =over 4 |
1055 | |
6e73ac25 |
1056 | =item Arguments: $sqlt_args, $dir |
82b01c38 |
1057 | |
1058 | =back |
1059 | |
1060 | Attempts to deploy the schema to the current storage using L<SQL::Translator>. |
ec6704d4 |
1061 | |
51bace1c |
1062 | See L<SQL::Translator/METHODS> for a list of values for C<$sqlt_args>. The most |
1063 | common value for this would be C<< { add_drop_table => 1, } >> to have the SQL |
1064 | produced include a DROP TABLE statement for each table created. |
1065 | |
499adf63 |
1066 | Additionally, the DBIx::Class parser accepts a C<sources> parameter as a hash |
1067 | ref or an array ref, containing a list of source to deploy. If present, then |
0e2c6809 |
1068 | only the sources listed will get deployed. Furthermore, you can use the |
1069 | C<add_fk_index> parser parameter to prevent the parser from creating an index for each |
1070 | FK. |
499adf63 |
1071 | |
1c339d71 |
1072 | =cut |
1073 | |
1074 | sub deploy { |
6e73ac25 |
1075 | my ($self, $sqltargs, $dir) = @_; |
1c339d71 |
1076 | $self->throw_exception("Can't deploy without storage") unless $self->storage; |
6e73ac25 |
1077 | $self->storage->deploy($self, undef, $sqltargs, $dir); |
1c339d71 |
1078 | } |
1079 | |
0e0ce6c1 |
1080 | =head2 deployment_statements |
1081 | |
1082 | =over 4 |
1083 | |
1084 | =item Arguments: $rdbms_type |
1085 | |
1086 | =back |
1087 | |
1088 | Returns the SQL statements used by L</deploy> and L<DBIx::Class::Schema/deploy>. |
1089 | C<$rdbms_type> provides the DBI database driver name for which the SQL |
1090 | statements are produced. If not supplied, the type of the current schema storage |
1091 | will be used. |
1092 | |
1093 | =cut |
1094 | |
1095 | sub deployment_statements { |
1096 | my ($self, $rdbms_type) = @_; |
1097 | |
1098 | $self->throw_exception("Can't generate deployment statements without a storage") |
1099 | if not $self->storage; |
1100 | |
1101 | $self->storage->deployment_statements($self, $rdbms_type); |
1102 | } |
1103 | |
c0f61310 |
1104 | =head2 create_ddl_dir (EXPERIMENTAL) |
1105 | |
1106 | =over 4 |
1107 | |
c9d2e0a2 |
1108 | =item Arguments: \@databases, $version, $directory, $preversion, $sqlt_args |
c0f61310 |
1109 | |
1110 | =back |
1111 | |
1112 | Creates an SQL file based on the Schema, for each of the specified |
c9d2e0a2 |
1113 | database types, in the given directory. Given a previous version number, |
1114 | this will also create a file containing the ALTER TABLE statements to |
1115 | transform the previous schema into the current one. Note that these |
1116 | statements may contain DROP TABLE or DROP COLUMN statements that can |
1117 | potentially destroy data. |
1118 | |
1119 | The file names are created using the C<ddl_filename> method below, please |
1120 | override this method in your schema if you would like a different file |
1121 | name format. For the ALTER file, the same format is used, replacing |
1122 | $version in the name with "$preversion-$version". |
1123 | |
0e2c6809 |
1124 | See L<DBIx::Class::Schema/deploy> for details of $sqlt_args. |
1125 | |
c9d2e0a2 |
1126 | If no arguments are passed, then the following default values are used: |
1127 | |
1128 | =over 4 |
1129 | |
1130 | =item databases - ['MySQL', 'SQLite', 'PostgreSQL'] |
1131 | |
1132 | =item version - $schema->VERSION |
1133 | |
1134 | =item directory - './' |
1135 | |
1136 | =item preversion - <none> |
1137 | |
1138 | =back |
c0f61310 |
1139 | |
1140 | Note that this feature is currently EXPERIMENTAL and may not work correctly |
1141 | across all databases, or fully handle complex relationships. |
1142 | |
c9d2e0a2 |
1143 | WARNING: Please check all SQL files created, before applying them. |
1144 | |
c0f61310 |
1145 | =cut |
1146 | |
6e73ac25 |
1147 | sub create_ddl_dir { |
e673f011 |
1148 | my $self = shift; |
1149 | |
1150 | $self->throw_exception("Can't create_ddl_dir without storage") unless $self->storage; |
1151 | $self->storage->create_ddl_dir($self, @_); |
1152 | } |
1153 | |
e63a82f7 |
1154 | =head2 ddl_filename |
9b83fccd |
1155 | |
c9d2e0a2 |
1156 | =over 4 |
1157 | |
99a74c4a |
1158 | =item Arguments: $database-type, $version, $directory, $preversion |
c9d2e0a2 |
1159 | |
1160 | =back |
1161 | |
99a74c4a |
1162 | my $filename = $table->ddl_filename($type, $version, $dir, $preversion) |
c9d2e0a2 |
1163 | |
1164 | This method is called by C<create_ddl_dir> to compose a file name out of |
1165 | the supplied directory, database type and version number. The default file |
1166 | name format is: C<$dir$schema-$version-$type.sql>. |
9b83fccd |
1167 | |
c9d2e0a2 |
1168 | You may override this method in your schema if you wish to use a different |
1169 | format. |
9b83fccd |
1170 | |
1171 | =cut |
1172 | |
6e73ac25 |
1173 | sub ddl_filename { |
99a74c4a |
1174 | my ($self, $type, $version, $dir, $preversion) = @_; |
e673f011 |
1175 | |
99a74c4a |
1176 | my $filename = ref($self); |
1177 | $filename =~ s/::/-/g; |
1178 | $filename = File::Spec->catfile($dir, "$filename-$version-$type.sql"); |
1179 | $filename =~ s/$version/$preversion-$version/ if($preversion); |
1180 | |
1181 | return $filename; |
e673f011 |
1182 | } |
1183 | |
d2f3e87b |
1184 | =head2 sqlt_deploy_hook($sqlt_schema) |
1185 | |
1186 | An optional sub which you can declare in your own Schema class that will get |
1187 | passed the L<SQL::Translator::Schema> object when you deploy the schema via |
1188 | L</create_ddl_dir> or L</deploy>. |
1189 | |
1190 | For an example of what you can do with this, see |
1191 | L<DBIx::Class::Manual::Cookbook/Adding Indexes And Functions To Your SQL>. |
1192 | |
4146e3da |
1193 | =head2 thaw |
1194 | |
1195 | Provided as the recommened way of thawing schema objects. You can call |
1196 | C<Storable::thaw> directly if you wish, but the thawed objects will not have a |
1197 | reference to any schema, so are rather useless |
1198 | |
1199 | =cut |
1200 | |
1201 | sub thaw { |
1202 | my ($self, $obj) = @_; |
1203 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1204 | return Storable::thaw($obj); |
1205 | } |
1206 | |
1207 | =head2 freeze |
1208 | |
1209 | This doesn't actualy do anything more than call L<Storable/freeze>, it is just |
1210 | provided here for symetry. |
1211 | |
d2f3e87b |
1212 | =cut |
1213 | |
4146e3da |
1214 | sub freeze { |
1215 | return Storable::freeze($_[1]); |
1216 | } |
1217 | |
1218 | =head2 dclone |
1219 | |
1220 | Recommeneded way of dcloning objects. This is needed to properly maintain |
1221 | references to the schema object (which itself is B<not> cloned.) |
1222 | |
1223 | =cut |
1224 | |
1225 | sub dclone { |
1226 | my ($self, $obj) = @_; |
1227 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1228 | return Storable::dclone($obj); |
1229 | } |
1230 | |
93e4d41a |
1231 | =head2 schema_version |
1232 | |
1233 | Returns the current schema class' $VERSION |
1234 | |
1235 | =cut |
1236 | |
1237 | sub schema_version { |
1238 | my ($self) = @_; |
1239 | my $class = ref($self)||$self; |
1240 | |
1241 | # does -not- use $schema->VERSION |
1242 | # since that varies in results depending on if version.pm is installed, and if |
1243 | # so the perl or XS versions. If you want this to change, bug the version.pm |
1244 | # author to make vpp and vxs behave the same. |
1245 | |
1246 | my $version; |
1247 | { |
1248 | no strict 'refs'; |
1249 | $version = ${"${class}::VERSION"}; |
1250 | } |
1251 | return $version; |
1252 | } |
1253 | |
a02675cd |
1254 | 1; |
c2da098a |
1255 | |
c2da098a |
1256 | =head1 AUTHORS |
1257 | |
daec44b8 |
1258 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
c2da098a |
1259 | |
1260 | =head1 LICENSE |
1261 | |
1262 | You may distribute this code under the same terms as Perl itself. |
1263 | |
1264 | =cut |