Commit | Line | Data |
a02675cd |
1 | package DBIx::Class::Schema; |
2 | |
3 | use strict; |
4 | use warnings; |
aa562407 |
5 | |
4981dc70 |
6 | use DBIx::Class::Exception; |
c3e9f718 |
7 | use Carp::Clan qw/^DBIx::Class|^Try::Tiny/; |
9780718f |
8 | use Try::Tiny; |
6298a324 |
9 | use Scalar::Util 'weaken'; |
c9d2e0a2 |
10 | use File::Spec; |
6298a324 |
11 | use Sub::Name 'subname'; |
329d7385 |
12 | use Module::Find(); |
6298a324 |
13 | use Storable(); |
50261284 |
14 | use B qw/svref_2object/; |
fd323bf1 |
15 | use namespace::clean; |
a02675cd |
16 | |
41a6f8c0 |
17 | use base qw/DBIx::Class/; |
a02675cd |
18 | |
0dc79249 |
19 | __PACKAGE__->mk_classdata('class_mappings' => {}); |
20 | __PACKAGE__->mk_classdata('source_registrations' => {}); |
1e10a11d |
21 | __PACKAGE__->mk_classdata('storage_type' => '::DBI'); |
d7156e50 |
22 | __PACKAGE__->mk_classdata('storage'); |
82cc0386 |
23 | __PACKAGE__->mk_classdata('exception_action'); |
4b946902 |
24 | __PACKAGE__->mk_classdata('stacktrace' => $ENV{DBIC_TRACE} || 0); |
e6c747fd |
25 | __PACKAGE__->mk_classdata('default_resultset_attributes' => {}); |
a02675cd |
26 | |
c2da098a |
27 | =head1 NAME |
28 | |
29 | DBIx::Class::Schema - composable schemas |
30 | |
31 | =head1 SYNOPSIS |
32 | |
24d67825 |
33 | package Library::Schema; |
c2da098a |
34 | use base qw/DBIx::Class::Schema/; |
bab77431 |
35 | |
829517d4 |
36 | # load all Result classes in Library/Schema/Result/ |
37 | __PACKAGE__->load_namespaces(); |
c2da098a |
38 | |
829517d4 |
39 | package Library::Schema::Result::CD; |
d88ecca6 |
40 | use base qw/DBIx::Class::Core/; |
41 | |
42 | __PACKAGE__->load_components(qw/InflateColumn::DateTime/); # for example |
24d67825 |
43 | __PACKAGE__->table('cd'); |
c2da098a |
44 | |
5d9076f2 |
45 | # Elsewhere in your code: |
24d67825 |
46 | my $schema1 = Library::Schema->connect( |
a3d93194 |
47 | $dsn, |
48 | $user, |
49 | $password, |
ef131d82 |
50 | { AutoCommit => 1 }, |
a3d93194 |
51 | ); |
bab77431 |
52 | |
24d67825 |
53 | my $schema2 = Library::Schema->connect($coderef_returning_dbh); |
c2da098a |
54 | |
829517d4 |
55 | # fetch objects using Library::Schema::Result::DVD |
24d67825 |
56 | my $resultset = $schema1->resultset('DVD')->search( ... ); |
57 | my @dvd_objects = $schema2->resultset('DVD')->search( ... ); |
c2da098a |
58 | |
59 | =head1 DESCRIPTION |
60 | |
a3d93194 |
61 | Creates database classes based on a schema. This is the recommended way to |
62 | use L<DBIx::Class> and allows you to use more than one concurrent connection |
63 | with your classes. |
429bd4f1 |
64 | |
03312470 |
65 | NB: If you're used to L<Class::DBI> it's worth reading the L</SYNOPSIS> |
2053ab2a |
66 | carefully, as DBIx::Class does things a little differently. Note in |
03312470 |
67 | particular which module inherits off which. |
68 | |
829517d4 |
69 | =head1 SETUP METHODS |
c2da098a |
70 | |
829517d4 |
71 | =head2 load_namespaces |
87c4e602 |
72 | |
27f01d1f |
73 | =over 4 |
74 | |
829517d4 |
75 | =item Arguments: %options? |
27f01d1f |
76 | |
77 | =back |
076652e8 |
78 | |
829517d4 |
79 | __PACKAGE__->load_namespaces(); |
66d9ef6b |
80 | |
829517d4 |
81 | __PACKAGE__->load_namespaces( |
82 | result_namespace => 'Res', |
83 | resultset_namespace => 'RSet', |
84 | default_resultset_class => '+MyDB::Othernamespace::RSet', |
85 | ); |
076652e8 |
86 | |
829517d4 |
87 | With no arguments, this method uses L<Module::Find> to load all your |
88 | Result classes from a sub-namespace F<Result> under your Schema class' |
48580715 |
89 | namespace, i.e. with a Schema of I<MyDB::Schema> all files in |
829517d4 |
90 | I<MyDB::Schema::Result> are assumed to be Result classes. |
c2da098a |
91 | |
829517d4 |
92 | It also finds all ResultSet classes in the namespace F<ResultSet> and |
93 | loads them into the appropriate Result classes using for you. The |
94 | matching is done by assuming the package name of the ResultSet class |
95 | is the same as that of the Result class. |
74b92d9a |
96 | |
672687db |
97 | You will be warned if ResultSet classes are discovered for which there |
829517d4 |
98 | are no matching Result classes like this: |
87c4e602 |
99 | |
829517d4 |
100 | load_namespaces found ResultSet class $classname with no corresponding Result class |
27f01d1f |
101 | |
829517d4 |
102 | If a Result class is found to already have a ResultSet class set using |
103 | L</resultset_class> to some other class, you will be warned like this: |
27f01d1f |
104 | |
fd323bf1 |
105 | We found ResultSet class '$rs_class' for '$result', but it seems |
829517d4 |
106 | that you had already set '$result' to use '$rs_set' instead |
076652e8 |
107 | |
829517d4 |
108 | Both of the sub-namespaces are configurable if you don't like the defaults, |
109 | via the options C<result_namespace> and C<resultset_namespace>. |
076652e8 |
110 | |
829517d4 |
111 | If (and only if) you specify the option C<default_resultset_class>, any found |
112 | Result classes for which we do not find a corresponding |
113 | ResultSet class will have their C<resultset_class> set to |
114 | C<default_resultset_class>. |
076652e8 |
115 | |
829517d4 |
116 | All of the namespace and classname options to this method are relative to |
117 | the schema classname by default. To specify a fully-qualified name, prefix |
118 | it with a literal C<+>. |
2a4d9487 |
119 | |
829517d4 |
120 | Examples: |
2a4d9487 |
121 | |
829517d4 |
122 | # load My::Schema::Result::CD, My::Schema::Result::Artist, |
123 | # My::Schema::ResultSet::CD, etc... |
124 | My::Schema->load_namespaces; |
2a4d9487 |
125 | |
829517d4 |
126 | # Override everything to use ugly names. |
127 | # In this example, if there is a My::Schema::Res::Foo, but no matching |
128 | # My::Schema::RSets::Foo, then Foo will have its |
129 | # resultset_class set to My::Schema::RSetBase |
130 | My::Schema->load_namespaces( |
131 | result_namespace => 'Res', |
132 | resultset_namespace => 'RSets', |
133 | default_resultset_class => 'RSetBase', |
134 | ); |
2a4d9487 |
135 | |
829517d4 |
136 | # Put things in other namespaces |
137 | My::Schema->load_namespaces( |
138 | result_namespace => '+Some::Place::Results', |
139 | resultset_namespace => '+Another::Place::RSets', |
140 | ); |
2a4d9487 |
141 | |
829517d4 |
142 | If you'd like to use multiple namespaces of each type, simply use an arrayref |
143 | of namespaces for that option. In the case that the same result |
144 | (or resultset) class exists in multiple namespaces, the latter entries in |
145 | your list of namespaces will override earlier ones. |
2a4d9487 |
146 | |
829517d4 |
147 | My::Schema->load_namespaces( |
148 | # My::Schema::Results_C::Foo takes precedence over My::Schema::Results_B::Foo : |
149 | result_namespace => [ 'Results_A', 'Results_B', 'Results_C' ], |
150 | resultset_namespace => [ '+Some::Place::RSets', 'RSets' ], |
151 | ); |
2a4d9487 |
152 | |
153 | =cut |
154 | |
829517d4 |
155 | # Pre-pends our classname to the given relative classname or |
156 | # class namespace, unless there is a '+' prefix, which will |
157 | # be stripped. |
158 | sub _expand_relative_name { |
159 | my ($class, $name) = @_; |
160 | return if !$name; |
161 | $name = $class . '::' . $name if ! ($name =~ s/^\+//); |
162 | return $name; |
2a4d9487 |
163 | } |
164 | |
f3405058 |
165 | # Finds all modules in the supplied namespace, or if omitted in the |
166 | # namespace of $class. Untaints all findings as they can be assumed |
167 | # to be safe |
168 | sub _findallmod { |
169 | my $proto = shift; |
170 | my $ns = shift || ref $proto || $proto; |
171 | |
172 | my @mods = Module::Find::findallmod($ns); |
173 | |
174 | # try to untaint module names. mods where this fails |
175 | # are left alone so we don't have to change the old behavior |
176 | no locale; # localized \w doesn't untaint expression |
177 | return map { $_ =~ m/^( (?:\w+::)* \w+ )$/x ? $1 : $_ } @mods; |
178 | } |
179 | |
829517d4 |
180 | # returns a hash of $shortname => $fullname for every package |
b488020e |
181 | # found in the given namespaces ($shortname is with the $fullname's |
182 | # namespace stripped off) |
829517d4 |
183 | sub _map_namespaces { |
184 | my ($class, @namespaces) = @_; |
6eec9003 |
185 | |
829517d4 |
186 | my @results_hash; |
187 | foreach my $namespace (@namespaces) { |
188 | push( |
189 | @results_hash, |
190 | map { (substr($_, length "${namespace}::"), $_) } |
f3405058 |
191 | $class->_findallmod($namespace) |
829517d4 |
192 | ); |
0dc79249 |
193 | } |
27f01d1f |
194 | |
829517d4 |
195 | @results_hash; |
ea20d0fd |
196 | } |
197 | |
b488020e |
198 | # returns the result_source_instance for the passed class/object, |
199 | # or dies with an informative message (used by load_namespaces) |
200 | sub _ns_get_rsrc_instance { |
201 | my $class = shift; |
202 | my $rs = ref ($_[0]) || $_[0]; |
203 | |
204 | if ($rs->can ('result_source_instance') ) { |
0647e0cc |
205 | return $rs->result_source_instance; |
b488020e |
206 | } |
207 | else { |
208 | $class->throw_exception ( |
209 | "Attempt to load_namespaces() class $rs failed - are you sure this is a real Result Class?" |
210 | ); |
211 | } |
212 | } |
213 | |
829517d4 |
214 | sub load_namespaces { |
215 | my ($class, %args) = @_; |
0dc79249 |
216 | |
829517d4 |
217 | my $result_namespace = delete $args{result_namespace} || 'Result'; |
218 | my $resultset_namespace = delete $args{resultset_namespace} || 'ResultSet'; |
219 | my $default_resultset_class = delete $args{default_resultset_class}; |
0dc79249 |
220 | |
829517d4 |
221 | $class->throw_exception('load_namespaces: unknown option(s): ' |
222 | . join(q{,}, map { qq{'$_'} } keys %args)) |
223 | if scalar keys %args; |
0dc79249 |
224 | |
829517d4 |
225 | $default_resultset_class |
226 | = $class->_expand_relative_name($default_resultset_class); |
9b1ba0f2 |
227 | |
829517d4 |
228 | for my $arg ($result_namespace, $resultset_namespace) { |
229 | $arg = [ $arg ] if !ref($arg) && $arg; |
9b1ba0f2 |
230 | |
829517d4 |
231 | $class->throw_exception('load_namespaces: namespace arguments must be ' |
232 | . 'a simple string or an arrayref') |
233 | if ref($arg) ne 'ARRAY'; |
9b1ba0f2 |
234 | |
829517d4 |
235 | $_ = $class->_expand_relative_name($_) for (@$arg); |
236 | } |
ea20d0fd |
237 | |
829517d4 |
238 | my %results = $class->_map_namespaces(@$result_namespace); |
239 | my %resultsets = $class->_map_namespaces(@$resultset_namespace); |
27f01d1f |
240 | |
829517d4 |
241 | my @to_register; |
242 | { |
87bf71d5 |
243 | no warnings qw/redefine/; |
244 | local *Class::C3::reinitialize = sub { } if DBIx::Class::_ENV_::OLD_MRO; |
245 | use warnings qw/redefine/; |
27f01d1f |
246 | |
3988ce40 |
247 | # ensure classes are loaded and attached in inheritance order |
f5ef5fa1 |
248 | for my $res (values %results) { |
249 | $class->ensure_class_loaded($res); |
250 | } |
3988ce40 |
251 | my %inh_idx; |
252 | my @subclass_last = sort { |
253 | |
254 | ($inh_idx{$a} ||= |
255 | scalar @{mro::get_linear_isa( $results{$a} )} |
256 | ) |
257 | |
258 | <=> |
259 | |
260 | ($inh_idx{$b} ||= |
261 | scalar @{mro::get_linear_isa( $results{$b} )} |
262 | ) |
263 | |
264 | } keys(%results); |
265 | |
3d27f771 |
266 | foreach my $result (@subclass_last) { |
829517d4 |
267 | my $result_class = $results{$result}; |
82b01c38 |
268 | |
829517d4 |
269 | my $rs_class = delete $resultsets{$result}; |
b488020e |
270 | my $rs_set = $class->_ns_get_rsrc_instance ($result_class)->resultset_class; |
3988ce40 |
271 | |
829517d4 |
272 | if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') { |
3d27f771 |
273 | if($rs_class && $rs_class ne $rs_set) { |
341d5ede |
274 | carp "We found ResultSet class '$rs_class' for '$result', but it seems " |
829517d4 |
275 | . "that you had already set '$result' to use '$rs_set' instead"; |
276 | } |
277 | } |
278 | elsif($rs_class ||= $default_resultset_class) { |
279 | $class->ensure_class_loaded($rs_class); |
1d3108a4 |
280 | if(!$rs_class->isa("DBIx::Class::ResultSet")) { |
281 | carp "load_namespaces found ResultSet class $rs_class that does not subclass DBIx::Class::ResultSet"; |
282 | } |
283 | |
b488020e |
284 | $class->_ns_get_rsrc_instance ($result_class)->resultset_class($rs_class); |
829517d4 |
285 | } |
82b01c38 |
286 | |
b488020e |
287 | my $source_name = $class->_ns_get_rsrc_instance ($result_class)->source_name || $result; |
0e6c5d58 |
288 | |
289 | push(@to_register, [ $source_name, $result_class ]); |
829517d4 |
290 | } |
291 | } |
ea20d0fd |
292 | |
829517d4 |
293 | foreach (sort keys %resultsets) { |
341d5ede |
294 | carp "load_namespaces found ResultSet class $_ with no " |
829517d4 |
295 | . 'corresponding Result class'; |
296 | } |
ea20d0fd |
297 | |
87bf71d5 |
298 | Class::C3->reinitialize if DBIx::Class::_ENV_::OLD_MRO; |
299 | |
829517d4 |
300 | $class->register_class(@$_) for (@to_register); |
ea20d0fd |
301 | |
829517d4 |
302 | return; |
ea20d0fd |
303 | } |
304 | |
87c4e602 |
305 | =head2 load_classes |
306 | |
27f01d1f |
307 | =over 4 |
308 | |
309 | =item Arguments: @classes?, { $namespace => [ @classes ] }+ |
310 | |
311 | =back |
076652e8 |
312 | |
1ab61457 |
313 | L</load_classes> is an alternative method to L</load_namespaces>, both of |
314 | which serve similar purposes, each with different advantages and disadvantages. |
315 | In the general case you should use L</load_namespaces>, unless you need to |
316 | be able to specify that only specific classes are loaded at runtime. |
829517d4 |
317 | |
82b01c38 |
318 | With no arguments, this method uses L<Module::Find> to find all classes under |
319 | the schema's namespace. Otherwise, this method loads the classes you specify |
320 | (using L<use>), and registers them (using L</"register_class">). |
076652e8 |
321 | |
2053ab2a |
322 | It is possible to comment out classes with a leading C<#>, but note that perl |
323 | will think it's a mistake (trying to use a comment in a qw list), so you'll |
324 | need to add C<no warnings 'qw';> before your load_classes call. |
5ce32fc1 |
325 | |
829517d4 |
326 | If any classes found do not appear to be Result class files, you will |
327 | get the following warning: |
328 | |
fd323bf1 |
329 | Failed to load $comp_class. Can't find source_name method. Is |
829517d4 |
330 | $comp_class really a full DBIC result class? Fix it, move it elsewhere, |
331 | or make your load_classes call more specific. |
332 | |
2053ab2a |
333 | Example: |
82b01c38 |
334 | |
335 | My::Schema->load_classes(); # loads My::Schema::CD, My::Schema::Artist, |
75d07914 |
336 | # etc. (anything under the My::Schema namespace) |
82b01c38 |
337 | |
338 | # loads My::Schema::CD, My::Schema::Artist, Other::Namespace::Producer but |
339 | # not Other::Namespace::LinerNotes nor My::Schema::Track |
340 | My::Schema->load_classes(qw/ CD Artist #Track /, { |
341 | Other::Namespace => [qw/ Producer #LinerNotes /], |
342 | }); |
343 | |
076652e8 |
344 | =cut |
345 | |
a02675cd |
346 | sub load_classes { |
5ce32fc1 |
347 | my ($class, @params) = @_; |
bab77431 |
348 | |
5ce32fc1 |
349 | my %comps_for; |
bab77431 |
350 | |
5ce32fc1 |
351 | if (@params) { |
352 | foreach my $param (@params) { |
353 | if (ref $param eq 'ARRAY') { |
354 | # filter out commented entries |
355 | my @modules = grep { $_ !~ /^#/ } @$param; |
bab77431 |
356 | |
5ce32fc1 |
357 | push (@{$comps_for{$class}}, @modules); |
358 | } |
359 | elsif (ref $param eq 'HASH') { |
360 | # more than one namespace possible |
361 | for my $comp ( keys %$param ) { |
362 | # filter out commented entries |
363 | my @modules = grep { $_ !~ /^#/ } @{$param->{$comp}}; |
364 | |
365 | push (@{$comps_for{$comp}}, @modules); |
366 | } |
367 | } |
368 | else { |
369 | # filter out commented entries |
370 | push (@{$comps_for{$class}}, $param) if $param !~ /^#/; |
371 | } |
372 | } |
373 | } else { |
bc0c9800 |
374 | my @comp = map { substr $_, length "${class}::" } |
f3405058 |
375 | $class->_findallmod; |
5ce32fc1 |
376 | $comps_for{$class} = \@comp; |
41a6f8c0 |
377 | } |
5ce32fc1 |
378 | |
e6efde04 |
379 | my @to_register; |
380 | { |
381 | no warnings qw/redefine/; |
87bf71d5 |
382 | local *Class::C3::reinitialize = sub { } if DBIx::Class::_ENV_::OLD_MRO; |
383 | use warnings qw/redefine/; |
384 | |
e6efde04 |
385 | foreach my $prefix (keys %comps_for) { |
386 | foreach my $comp (@{$comps_for{$prefix}||[]}) { |
387 | my $comp_class = "${prefix}::${comp}"; |
c037c03a |
388 | $class->ensure_class_loaded($comp_class); |
bab77431 |
389 | |
89271e56 |
390 | my $snsub = $comp_class->can('source_name'); |
391 | if(! $snsub ) { |
341d5ede |
392 | carp "Failed to load $comp_class. Can't find source_name method. Is $comp_class really a full DBIC result class? Fix it, move it elsewhere, or make your load_classes call more specific."; |
89271e56 |
393 | next; |
394 | } |
395 | $comp = $snsub->($comp_class) || $comp; |
396 | |
93405cf0 |
397 | push(@to_register, [ $comp, $comp_class ]); |
bfb2bd4f |
398 | } |
5ce32fc1 |
399 | } |
a02675cd |
400 | } |
87bf71d5 |
401 | Class::C3->reinitialize if DBIx::Class::_ENV_::OLD_MRO; |
e6efde04 |
402 | |
403 | foreach my $to (@to_register) { |
404 | $class->register_class(@$to); |
405 | # if $class->can('result_source_instance'); |
406 | } |
a02675cd |
407 | } |
408 | |
829517d4 |
409 | =head2 storage_type |
2374c5ff |
410 | |
411 | =over 4 |
412 | |
829517d4 |
413 | =item Arguments: $storage_type|{$storage_type, \%args} |
414 | |
415 | =item Return value: $storage_type|{$storage_type, \%args} |
416 | |
417 | =item Default value: DBIx::Class::Storage::DBI |
2374c5ff |
418 | |
419 | =back |
420 | |
829517d4 |
421 | Set the storage class that will be instantiated when L</connect> is called. |
422 | If the classname starts with C<::>, the prefix C<DBIx::Class::Storage> is |
95787afe |
423 | assumed by L</connect>. |
2374c5ff |
424 | |
829517d4 |
425 | You want to use this to set subclasses of L<DBIx::Class::Storage::DBI> |
95787afe |
426 | in cases where the appropriate subclass is not autodetected. |
85bd0538 |
427 | |
829517d4 |
428 | If your storage type requires instantiation arguments, those are |
429 | defined as a second argument in the form of a hashref and the entire |
430 | value needs to be wrapped into an arrayref or a hashref. We support |
431 | both types of refs here in order to play nice with your |
432 | Config::[class] or your choice. See |
433 | L<DBIx::Class::Storage::DBI::Replicated> for an example of this. |
0f4ec1d2 |
434 | |
829517d4 |
435 | =head2 exception_action |
f017c022 |
436 | |
829517d4 |
437 | =over 4 |
0f4ec1d2 |
438 | |
829517d4 |
439 | =item Arguments: $code_reference |
f017c022 |
440 | |
829517d4 |
441 | =item Return value: $code_reference |
85bd0538 |
442 | |
829517d4 |
443 | =item Default value: None |
2374c5ff |
444 | |
829517d4 |
445 | =back |
f017c022 |
446 | |
c3e9f718 |
447 | When L</throw_exception> is invoked and L</exception_action> is set to a code |
448 | reference, this reference will be called instead of |
449 | L<DBIx::Class::Exception/throw>, with the exception message passed as the only |
450 | argument. |
f017c022 |
451 | |
c3e9f718 |
452 | Your custom throw code B<must> rethrow the exception, as L</throw_exception> is |
453 | an integral part of DBIC's internal execution control flow. |
f017c022 |
454 | |
829517d4 |
455 | Example: |
f017c022 |
456 | |
829517d4 |
457 | package My::Schema; |
458 | use base qw/DBIx::Class::Schema/; |
459 | use My::ExceptionClass; |
460 | __PACKAGE__->exception_action(sub { My::ExceptionClass->throw(@_) }); |
461 | __PACKAGE__->load_classes; |
2374c5ff |
462 | |
829517d4 |
463 | # or: |
464 | my $schema_obj = My::Schema->connect( .... ); |
465 | $schema_obj->exception_action(sub { My::ExceptionClass->throw(@_) }); |
0f4ec1d2 |
466 | |
829517d4 |
467 | =head2 stacktrace |
f017c022 |
468 | |
829517d4 |
469 | =over 4 |
2374c5ff |
470 | |
829517d4 |
471 | =item Arguments: boolean |
2374c5ff |
472 | |
829517d4 |
473 | =back |
2374c5ff |
474 | |
829517d4 |
475 | Whether L</throw_exception> should include stack trace information. |
476 | Defaults to false normally, but defaults to true if C<$ENV{DBIC_TRACE}> |
477 | is true. |
0f4ec1d2 |
478 | |
829517d4 |
479 | =head2 sqlt_deploy_hook |
0f4ec1d2 |
480 | |
829517d4 |
481 | =over |
0f4ec1d2 |
482 | |
829517d4 |
483 | =item Arguments: $sqlt_schema |
2374c5ff |
484 | |
829517d4 |
485 | =back |
2374c5ff |
486 | |
fd323bf1 |
487 | An optional sub which you can declare in your own Schema class that will get |
829517d4 |
488 | passed the L<SQL::Translator::Schema> object when you deploy the schema via |
489 | L</create_ddl_dir> or L</deploy>. |
0f4ec1d2 |
490 | |
fd323bf1 |
491 | For an example of what you can do with this, see |
829517d4 |
492 | L<DBIx::Class::Manual::Cookbook/Adding Indexes And Functions To Your SQL>. |
fdcd8145 |
493 | |
2d7d8459 |
494 | Note that sqlt_deploy_hook is called by L</deployment_statements>, which in turn |
495 | is called before L</deploy>. Therefore the hook can be used only to manipulate |
496 | the L<SQL::Translator::Schema> object before it is turned into SQL fed to the |
497 | database. If you want to execute post-deploy statements which can not be generated |
498 | by L<SQL::Translator>, the currently suggested method is to overload L</deploy> |
499 | and use L<dbh_do|DBIx::Class::Storage::DBI/dbh_do>. |
500 | |
829517d4 |
501 | =head1 METHODS |
2374c5ff |
502 | |
829517d4 |
503 | =head2 connect |
87c4e602 |
504 | |
27f01d1f |
505 | =over 4 |
506 | |
829517d4 |
507 | =item Arguments: @connectinfo |
429bd4f1 |
508 | |
d601dc88 |
509 | =item Return Value: $new_schema |
27f01d1f |
510 | |
511 | =back |
076652e8 |
512 | |
829517d4 |
513 | Creates and returns a new Schema object. The connection info set on it |
514 | is used to create a new instance of the storage backend and set it on |
515 | the Schema object. |
1c133e22 |
516 | |
829517d4 |
517 | See L<DBIx::Class::Storage::DBI/"connect_info"> for DBI-specific |
5d52945a |
518 | syntax on the C<@connectinfo> argument, or L<DBIx::Class::Storage> in |
829517d4 |
519 | general. |
1c133e22 |
520 | |
5d52945a |
521 | Note that C<connect_info> expects an arrayref of arguments, but |
faaba25f |
522 | C<connect> does not. C<connect> wraps its arguments in an arrayref |
5d52945a |
523 | before passing them to C<connect_info>. |
524 | |
4c7d99ca |
525 | =head3 Overloading |
526 | |
527 | C<connect> is a convenience method. It is equivalent to calling |
528 | $schema->clone->connection(@connectinfo). To write your own overloaded |
529 | version, overload L</connection> instead. |
530 | |
076652e8 |
531 | =cut |
532 | |
829517d4 |
533 | sub connect { shift->clone->connection(@_) } |
e678398e |
534 | |
829517d4 |
535 | =head2 resultset |
77254782 |
536 | |
27f01d1f |
537 | =over 4 |
538 | |
829517d4 |
539 | =item Arguments: $source_name |
82b01c38 |
540 | |
829517d4 |
541 | =item Return Value: $resultset |
27f01d1f |
542 | |
543 | =back |
13765dad |
544 | |
829517d4 |
545 | my $rs = $schema->resultset('DVD'); |
82b01c38 |
546 | |
829517d4 |
547 | Returns the L<DBIx::Class::ResultSet> object for the registered source |
548 | name. |
77254782 |
549 | |
550 | =cut |
551 | |
829517d4 |
552 | sub resultset { |
553 | my ($self, $moniker) = @_; |
73d47f9f |
554 | $self->throw_exception('resultset() expects a source name') |
555 | unless defined $moniker; |
829517d4 |
556 | return $self->source($moniker)->resultset; |
b7951443 |
557 | } |
558 | |
829517d4 |
559 | =head2 sources |
6b43ba5f |
560 | |
561 | =over 4 |
562 | |
829517d4 |
563 | =item Return Value: @source_names |
6b43ba5f |
564 | |
565 | =back |
566 | |
829517d4 |
567 | my @source_names = $schema->sources; |
6b43ba5f |
568 | |
829517d4 |
569 | Lists names of all the sources registered on this Schema object. |
6b43ba5f |
570 | |
829517d4 |
571 | =cut |
161fb223 |
572 | |
829517d4 |
573 | sub sources { return keys %{shift->source_registrations}; } |
106d5f3b |
574 | |
829517d4 |
575 | =head2 source |
87c4e602 |
576 | |
27f01d1f |
577 | =over 4 |
578 | |
829517d4 |
579 | =item Arguments: $source_name |
66d9ef6b |
580 | |
829517d4 |
581 | =item Return Value: $result_source |
27f01d1f |
582 | |
583 | =back |
82b01c38 |
584 | |
829517d4 |
585 | my $source = $schema->source('Book'); |
85f78622 |
586 | |
829517d4 |
587 | Returns the L<DBIx::Class::ResultSource> object for the registered |
588 | source name. |
66d9ef6b |
589 | |
590 | =cut |
591 | |
829517d4 |
592 | sub source { |
f5f2af8f |
593 | my $self = shift; |
594 | |
595 | $self->throw_exception("source() expects a source name") |
596 | unless @_; |
597 | |
598 | my $moniker = shift; |
599 | |
829517d4 |
600 | my $sreg = $self->source_registrations; |
601 | return $sreg->{$moniker} if exists $sreg->{$moniker}; |
602 | |
603 | # if we got here, they probably passed a full class name |
604 | my $mapped = $self->class_mappings->{$moniker}; |
605 | $self->throw_exception("Can't find source for ${moniker}") |
606 | unless $mapped && exists $sreg->{$mapped}; |
607 | return $sreg->{$mapped}; |
161fb223 |
608 | } |
609 | |
829517d4 |
610 | =head2 class |
87c4e602 |
611 | |
27f01d1f |
612 | =over 4 |
613 | |
829517d4 |
614 | =item Arguments: $source_name |
66d9ef6b |
615 | |
829517d4 |
616 | =item Return Value: $classname |
27f01d1f |
617 | |
618 | =back |
82b01c38 |
619 | |
829517d4 |
620 | my $class = $schema->class('CD'); |
621 | |
622 | Retrieves the Result class name for the given source name. |
66d9ef6b |
623 | |
624 | =cut |
625 | |
829517d4 |
626 | sub class { |
627 | my ($self, $moniker) = @_; |
628 | return $self->source($moniker)->result_class; |
629 | } |
08b515f1 |
630 | |
4012acd8 |
631 | =head2 txn_do |
08b515f1 |
632 | |
4012acd8 |
633 | =over 4 |
08b515f1 |
634 | |
4012acd8 |
635 | =item Arguments: C<$coderef>, @coderef_args? |
08b515f1 |
636 | |
4012acd8 |
637 | =item Return Value: The return value of $coderef |
08b515f1 |
638 | |
4012acd8 |
639 | =back |
08b515f1 |
640 | |
4012acd8 |
641 | Executes C<$coderef> with (optional) arguments C<@coderef_args> atomically, |
642 | returning its result (if any). Equivalent to calling $schema->storage->txn_do. |
643 | See L<DBIx::Class::Storage/"txn_do"> for more information. |
08b515f1 |
644 | |
4012acd8 |
645 | This interface is preferred over using the individual methods L</txn_begin>, |
646 | L</txn_commit>, and L</txn_rollback> below. |
08b515f1 |
647 | |
f9f06ae0 |
648 | WARNING: If you are connected with C<< AutoCommit => 0 >> the transaction is |
281719d2 |
649 | considered nested, and you will still need to call L</txn_commit> to write your |
f9f06ae0 |
650 | changes when appropriate. You will also want to connect with C<< auto_savepoint => |
651 | 1 >> to get partial rollback to work, if the storage driver for your database |
281719d2 |
652 | supports it. |
653 | |
f9f06ae0 |
654 | Connecting with C<< AutoCommit => 1 >> is recommended. |
281719d2 |
655 | |
4012acd8 |
656 | =cut |
08b515f1 |
657 | |
4012acd8 |
658 | sub txn_do { |
659 | my $self = shift; |
08b515f1 |
660 | |
4012acd8 |
661 | $self->storage or $self->throw_exception |
662 | ('txn_do called on $schema without storage'); |
08b515f1 |
663 | |
4012acd8 |
664 | $self->storage->txn_do(@_); |
665 | } |
66d9ef6b |
666 | |
6936e902 |
667 | =head2 txn_scope_guard |
75c8a7ab |
668 | |
fd323bf1 |
669 | Runs C<txn_scope_guard> on the schema's storage. See |
89028f42 |
670 | L<DBIx::Class::Storage/txn_scope_guard>. |
75c8a7ab |
671 | |
b85be4c1 |
672 | =cut |
673 | |
1bc193ac |
674 | sub txn_scope_guard { |
675 | my $self = shift; |
676 | |
677 | $self->storage or $self->throw_exception |
678 | ('txn_scope_guard called on $schema without storage'); |
679 | |
680 | $self->storage->txn_scope_guard(@_); |
681 | } |
682 | |
4012acd8 |
683 | =head2 txn_begin |
a62cf8d4 |
684 | |
4012acd8 |
685 | Begins a transaction (does nothing if AutoCommit is off). Equivalent to |
686 | calling $schema->storage->txn_begin. See |
8bfce9d5 |
687 | L<DBIx::Class::Storage/"txn_begin"> for more information. |
27f01d1f |
688 | |
4012acd8 |
689 | =cut |
82b01c38 |
690 | |
4012acd8 |
691 | sub txn_begin { |
692 | my $self = shift; |
27f01d1f |
693 | |
4012acd8 |
694 | $self->storage or $self->throw_exception |
695 | ('txn_begin called on $schema without storage'); |
a62cf8d4 |
696 | |
4012acd8 |
697 | $self->storage->txn_begin; |
698 | } |
a62cf8d4 |
699 | |
4012acd8 |
700 | =head2 txn_commit |
a62cf8d4 |
701 | |
4012acd8 |
702 | Commits the current transaction. Equivalent to calling |
8bfce9d5 |
703 | $schema->storage->txn_commit. See L<DBIx::Class::Storage/"txn_commit"> |
4012acd8 |
704 | for more information. |
a62cf8d4 |
705 | |
4012acd8 |
706 | =cut |
a62cf8d4 |
707 | |
4012acd8 |
708 | sub txn_commit { |
709 | my $self = shift; |
a62cf8d4 |
710 | |
4012acd8 |
711 | $self->storage or $self->throw_exception |
712 | ('txn_commit called on $schema without storage'); |
a62cf8d4 |
713 | |
4012acd8 |
714 | $self->storage->txn_commit; |
715 | } |
70634260 |
716 | |
4012acd8 |
717 | =head2 txn_rollback |
a62cf8d4 |
718 | |
4012acd8 |
719 | Rolls back the current transaction. Equivalent to calling |
720 | $schema->storage->txn_rollback. See |
8bfce9d5 |
721 | L<DBIx::Class::Storage/"txn_rollback"> for more information. |
a62cf8d4 |
722 | |
723 | =cut |
724 | |
4012acd8 |
725 | sub txn_rollback { |
726 | my $self = shift; |
a62cf8d4 |
727 | |
19630353 |
728 | $self->storage or $self->throw_exception |
4012acd8 |
729 | ('txn_rollback called on $schema without storage'); |
a62cf8d4 |
730 | |
4012acd8 |
731 | $self->storage->txn_rollback; |
a62cf8d4 |
732 | } |
733 | |
829517d4 |
734 | =head2 storage |
66d9ef6b |
735 | |
829517d4 |
736 | my $storage = $schema->storage; |
04786a4c |
737 | |
829517d4 |
738 | Returns the L<DBIx::Class::Storage> object for this Schema. Grab this |
739 | if you want to turn on SQL statement debugging at runtime, or set the |
740 | quote character. For the default storage, the documentation can be |
741 | found in L<DBIx::Class::Storage::DBI>. |
66d9ef6b |
742 | |
87c4e602 |
743 | =head2 populate |
744 | |
27f01d1f |
745 | =over 4 |
746 | |
16c5f7d3 |
747 | =item Arguments: $source_name, \@data; |
27f01d1f |
748 | |
829517d4 |
749 | =item Return value: \@$objects | nothing |
750 | |
27f01d1f |
751 | =back |
a37a4697 |
752 | |
16c5f7d3 |
753 | Pass this method a resultsource name, and an arrayref of |
754 | arrayrefs. The arrayrefs should contain a list of column names, |
fd323bf1 |
755 | followed by one or many sets of matching data for the given columns. |
16c5f7d3 |
756 | |
744076d8 |
757 | In void context, C<insert_bulk> in L<DBIx::Class::Storage::DBI> is used |
758 | to insert the data, as this is a fast method. However, insert_bulk currently |
759 | assumes that your datasets all contain the same type of values, using scalar |
760 | references in a column in one row, and not in another will probably not work. |
761 | |
762 | Otherwise, each set of data is inserted into the database using |
16c5f7d3 |
763 | L<DBIx::Class::ResultSet/create>, and a arrayref of the resulting row |
764 | objects is returned. |
82b01c38 |
765 | |
48580715 |
766 | e.g. |
a37a4697 |
767 | |
24d67825 |
768 | $schema->populate('Artist', [ |
769 | [ qw/artistid name/ ], |
770 | [ 1, 'Popular Band' ], |
771 | [ 2, 'Indie Band' ], |
a62cf8d4 |
772 | ... |
773 | ]); |
d4daee7b |
774 | |
fd323bf1 |
775 | Since wantarray context is basically the same as looping over $rs->create(...) |
5a93e138 |
776 | you won't see any performance benefits and in this case the method is more for |
777 | convenience. Void context sends the column information directly to storage |
fd323bf1 |
778 | using <DBI>s bulk insert method. So the performance will be much better for |
5a93e138 |
779 | storages that support this method. |
780 | |
fd323bf1 |
781 | Because of this difference in the way void context inserts rows into your |
5a93e138 |
782 | database you need to note how this will effect any loaded components that |
fd323bf1 |
783 | override or augment insert. For example if you are using a component such |
784 | as L<DBIx::Class::UUIDColumns> to populate your primary keys you MUST use |
5a93e138 |
785 | wantarray context if you want the PKs automatically created. |
a37a4697 |
786 | |
787 | =cut |
788 | |
789 | sub populate { |
790 | my ($self, $name, $data) = @_; |
c4e67d31 |
791 | if(my $rs = $self->resultset($name)) { |
792 | if(defined wantarray) { |
793 | return $rs->populate($data); |
794 | } else { |
795 | $rs->populate($data); |
54e0bd06 |
796 | } |
c4e67d31 |
797 | } else { |
fd323bf1 |
798 | $self->throw_exception("$name is not a resultset"); |
8b93a938 |
799 | } |
a37a4697 |
800 | } |
801 | |
829517d4 |
802 | =head2 connection |
803 | |
804 | =over 4 |
805 | |
806 | =item Arguments: @args |
807 | |
808 | =item Return Value: $new_schema |
809 | |
810 | =back |
811 | |
812 | Similar to L</connect> except sets the storage object and connection |
813 | data in-place on the Schema class. You should probably be calling |
814 | L</connect> to get a proper Schema object instead. |
815 | |
4c7d99ca |
816 | =head3 Overloading |
817 | |
818 | Overload C<connection> to change the behaviour of C<connect>. |
829517d4 |
819 | |
820 | =cut |
821 | |
822 | sub connection { |
823 | my ($self, @info) = @_; |
824 | return $self if !@info && $self->storage; |
d4daee7b |
825 | |
fd323bf1 |
826 | my ($storage_class, $args) = ref $self->storage_type ? |
829517d4 |
827 | ($self->_normalize_storage_type($self->storage_type),{}) : ($self->storage_type, {}); |
d4daee7b |
828 | |
829517d4 |
829 | $storage_class = 'DBIx::Class::Storage'.$storage_class |
830 | if $storage_class =~ m/^::/; |
9780718f |
831 | try { |
832 | $self->ensure_class_loaded ($storage_class); |
833 | } |
834 | catch { |
835 | $self->throw_exception( |
836 | "No arguments to load_classes and couldn't load ${storage_class} ($_)" |
837 | ); |
838 | }; |
829517d4 |
839 | my $storage = $storage_class->new($self=>$args); |
840 | $storage->connect_info(\@info); |
841 | $self->storage($storage); |
842 | return $self; |
843 | } |
844 | |
845 | sub _normalize_storage_type { |
846 | my ($self, $storage_type) = @_; |
847 | if(ref $storage_type eq 'ARRAY') { |
848 | return @$storage_type; |
849 | } elsif(ref $storage_type eq 'HASH') { |
850 | return %$storage_type; |
851 | } else { |
852 | $self->throw_exception('Unsupported REFTYPE given: '. ref $storage_type); |
853 | } |
854 | } |
855 | |
856 | =head2 compose_namespace |
82cc0386 |
857 | |
858 | =over 4 |
859 | |
829517d4 |
860 | =item Arguments: $target_namespace, $additional_base_class? |
861 | |
862 | =item Retur Value: $new_schema |
863 | |
864 | =back |
865 | |
866 | For each L<DBIx::Class::ResultSource> in the schema, this method creates a |
867 | class in the target namespace (e.g. $target_namespace::CD, |
868 | $target_namespace::Artist) that inherits from the corresponding classes |
869 | attached to the current schema. |
870 | |
871 | It also attaches a corresponding L<DBIx::Class::ResultSource> object to the |
872 | new $schema object. If C<$additional_base_class> is given, the new composed |
48580715 |
873 | classes will inherit from first the corresponding class from the current |
829517d4 |
874 | schema then the base class. |
875 | |
876 | For example, for a schema with My::Schema::CD and My::Schema::Artist classes, |
877 | |
878 | $schema->compose_namespace('My::DB', 'Base::Class'); |
879 | print join (', ', @My::DB::CD::ISA) . "\n"; |
880 | print join (', ', @My::DB::Artist::ISA) ."\n"; |
881 | |
882 | will produce the output |
883 | |
884 | My::Schema::CD, Base::Class |
885 | My::Schema::Artist, Base::Class |
886 | |
887 | =cut |
888 | |
889 | # this might be oversimplified |
890 | # sub compose_namespace { |
891 | # my ($self, $target, $base) = @_; |
892 | |
893 | # my $schema = $self->clone; |
894 | # foreach my $moniker ($schema->sources) { |
895 | # my $source = $schema->source($moniker); |
896 | # my $target_class = "${target}::${moniker}"; |
897 | # $self->inject_base( |
898 | # $target_class => $source->result_class, ($base ? $base : ()) |
899 | # ); |
900 | # $source->result_class($target_class); |
901 | # $target_class->result_source_instance($source) |
902 | # if $target_class->can('result_source_instance'); |
903 | # $schema->register_source($moniker, $source); |
904 | # } |
905 | # return $schema; |
906 | # } |
907 | |
908 | sub compose_namespace { |
909 | my ($self, $target, $base) = @_; |
910 | my $schema = $self->clone; |
911 | { |
912 | no warnings qw/redefine/; |
87bf71d5 |
913 | local *Class::C3::reinitialize = sub { } if DBIx::Class::_ENV_::OLD_MRO; |
914 | use warnings qw/redefine/; |
915 | |
a8c2c746 |
916 | no strict qw/refs/; |
829517d4 |
917 | foreach my $moniker ($schema->sources) { |
918 | my $source = $schema->source($moniker); |
919 | my $target_class = "${target}::${moniker}"; |
920 | $self->inject_base( |
921 | $target_class => $source->result_class, ($base ? $base : ()) |
922 | ); |
923 | $source->result_class($target_class); |
a8c2c746 |
924 | if ($target_class->can('result_source_instance')) { |
925 | |
926 | # since the newly created classes are registered only with |
927 | # the instance of $schema, it should be safe to weaken |
928 | # the ref (it will GC when $schema is destroyed) |
929 | $target_class->result_source_instance($source); |
930 | weaken ${"${target_class}::__cag_result_source_instance"}; |
931 | } |
829517d4 |
932 | $schema->register_source($moniker, $source); |
933 | } |
934 | } |
87bf71d5 |
935 | Class::C3->reinitialize() if DBIx::Class::_ENV_::OLD_MRO; |
829517d4 |
936 | { |
937 | no strict 'refs'; |
938 | no warnings 'redefine'; |
939 | foreach my $meth (qw/class source resultset/) { |
6298a324 |
940 | *{"${target}::${meth}"} = subname "${target}::${meth}" => |
829517d4 |
941 | sub { shift->schema->$meth(@_) }; |
942 | } |
943 | } |
944 | return $schema; |
945 | } |
946 | |
947 | sub setup_connection_class { |
948 | my ($class, $target, @info) = @_; |
949 | $class->inject_base($target => 'DBIx::Class::DB'); |
950 | #$target->load_components('DB'); |
951 | $target->connection(@info); |
952 | } |
953 | |
954 | =head2 svp_begin |
955 | |
fd323bf1 |
956 | Creates a new savepoint (does nothing outside a transaction). |
829517d4 |
957 | Equivalent to calling $schema->storage->svp_begin. See |
8bfce9d5 |
958 | L<DBIx::Class::Storage/"svp_begin"> for more information. |
829517d4 |
959 | |
960 | =cut |
961 | |
962 | sub svp_begin { |
963 | my ($self, $name) = @_; |
964 | |
965 | $self->storage or $self->throw_exception |
966 | ('svp_begin called on $schema without storage'); |
967 | |
968 | $self->storage->svp_begin($name); |
969 | } |
970 | |
971 | =head2 svp_release |
972 | |
fd323bf1 |
973 | Releases a savepoint (does nothing outside a transaction). |
829517d4 |
974 | Equivalent to calling $schema->storage->svp_release. See |
8bfce9d5 |
975 | L<DBIx::Class::Storage/"svp_release"> for more information. |
829517d4 |
976 | |
977 | =cut |
978 | |
979 | sub svp_release { |
980 | my ($self, $name) = @_; |
981 | |
982 | $self->storage or $self->throw_exception |
983 | ('svp_release called on $schema without storage'); |
82cc0386 |
984 | |
829517d4 |
985 | $self->storage->svp_release($name); |
986 | } |
82cc0386 |
987 | |
829517d4 |
988 | =head2 svp_rollback |
db5dc233 |
989 | |
fd323bf1 |
990 | Rollback to a savepoint (does nothing outside a transaction). |
829517d4 |
991 | Equivalent to calling $schema->storage->svp_rollback. See |
8bfce9d5 |
992 | L<DBIx::Class::Storage/"svp_rollback"> for more information. |
82cc0386 |
993 | |
829517d4 |
994 | =cut |
82cc0386 |
995 | |
829517d4 |
996 | sub svp_rollback { |
997 | my ($self, $name) = @_; |
82cc0386 |
998 | |
829517d4 |
999 | $self->storage or $self->throw_exception |
1000 | ('svp_rollback called on $schema without storage'); |
82cc0386 |
1001 | |
829517d4 |
1002 | $self->storage->svp_rollback($name); |
1003 | } |
db5dc233 |
1004 | |
829517d4 |
1005 | =head2 clone |
613397e7 |
1006 | |
84c5863b |
1007 | =over 4 |
613397e7 |
1008 | |
829517d4 |
1009 | =item Return Value: $new_schema |
613397e7 |
1010 | |
1011 | =back |
1012 | |
829517d4 |
1013 | Clones the schema and its associated result_source objects and returns the |
1014 | copy. |
1015 | |
1016 | =cut |
1017 | |
1018 | sub clone { |
1019 | my ($self) = @_; |
1020 | my $clone = { (ref $self ? %$self : ()) }; |
1021 | bless $clone, (ref $self || $self); |
1022 | |
1023 | $clone->class_mappings({ %{$clone->class_mappings} }); |
1024 | $clone->source_registrations({ %{$clone->source_registrations} }); |
1025 | foreach my $moniker ($self->sources) { |
1026 | my $source = $self->source($moniker); |
1027 | my $new = $source->new($source); |
1028 | # we use extra here as we want to leave the class_mappings as they are |
1029 | # but overwrite the source_registrations entry with the new source |
1030 | $clone->register_extra_source($moniker => $new); |
1031 | } |
1032 | $clone->storage->set_schema($clone) if $clone->storage; |
1033 | return $clone; |
1034 | } |
613397e7 |
1035 | |
5160b401 |
1036 | =head2 throw_exception |
701da8c4 |
1037 | |
75d07914 |
1038 | =over 4 |
82b01c38 |
1039 | |
ebc77b53 |
1040 | =item Arguments: $message |
82b01c38 |
1041 | |
1042 | =back |
1043 | |
1044 | Throws an exception. Defaults to using L<Carp::Clan> to report errors from |
db5dc233 |
1045 | user's perspective. See L</exception_action> for details on overriding |
4b946902 |
1046 | this method's behavior. If L</stacktrace> is turned on, C<throw_exception>'s |
1047 | default behavior will provide a detailed stack trace. |
701da8c4 |
1048 | |
1049 | =cut |
1050 | |
c3e9f718 |
1051 | my $false_exception_action_warned; |
701da8c4 |
1052 | sub throw_exception { |
82cc0386 |
1053 | my $self = shift; |
4981dc70 |
1054 | |
c3e9f718 |
1055 | if (my $act = $self->exception_action) { |
1056 | if ($act->(@_)) { |
1057 | DBIx::Class::Exception->throw( |
1058 | "Invocation of the exception_action handler installed on $self did *not*" |
1059 | .' result in an exception. DBIx::Class is unable to function without a reliable' |
1060 | .' exception mechanism, ensure that exception_action does not hide exceptions' |
1061 | ." (original error: $_[0])" |
1062 | ); |
1063 | } |
1064 | elsif(! $false_exception_action_warned++) { |
1065 | carp ( |
1066 | "The exception_action handler installed on $self returned false instead" |
1067 | .' of throwing an exception. This behavior has been deprecated, adjust your' |
1068 | .' handler to always rethrow the supplied error.' |
1069 | ); |
1070 | } |
1071 | } |
1072 | |
1073 | DBIx::Class::Exception->throw($_[0], $self->stacktrace); |
701da8c4 |
1074 | } |
1075 | |
dfccde48 |
1076 | =head2 deploy |
1c339d71 |
1077 | |
82b01c38 |
1078 | =over 4 |
1079 | |
10976519 |
1080 | =item Arguments: \%sqlt_args, $dir |
82b01c38 |
1081 | |
1082 | =back |
1083 | |
1084 | Attempts to deploy the schema to the current storage using L<SQL::Translator>. |
ec6704d4 |
1085 | |
10976519 |
1086 | See L<SQL::Translator/METHODS> for a list of values for C<\%sqlt_args>. |
1087 | The most common value for this would be C<< { add_drop_table => 1 } >> |
1088 | to have the SQL produced include a C<DROP TABLE> statement for each table |
1089 | created. For quoting purposes supply C<quote_table_names> and |
3e82fc27 |
1090 | C<quote_field_names>. |
51bace1c |
1091 | |
fd323bf1 |
1092 | Additionally, the DBIx::Class parser accepts a C<sources> parameter as a hash |
1093 | ref or an array ref, containing a list of source to deploy. If present, then |
0e2c6809 |
1094 | only the sources listed will get deployed. Furthermore, you can use the |
1095 | C<add_fk_index> parser parameter to prevent the parser from creating an index for each |
1096 | FK. |
499adf63 |
1097 | |
1c339d71 |
1098 | =cut |
1099 | |
1100 | sub deploy { |
6e73ac25 |
1101 | my ($self, $sqltargs, $dir) = @_; |
1c339d71 |
1102 | $self->throw_exception("Can't deploy without storage") unless $self->storage; |
6e73ac25 |
1103 | $self->storage->deploy($self, undef, $sqltargs, $dir); |
1c339d71 |
1104 | } |
1105 | |
0e0ce6c1 |
1106 | =head2 deployment_statements |
1107 | |
1108 | =over 4 |
1109 | |
10976519 |
1110 | =item Arguments: See L<DBIx::Class::Storage::DBI/deployment_statements> |
0e0ce6c1 |
1111 | |
829517d4 |
1112 | =item Return value: $listofstatements |
1113 | |
0e0ce6c1 |
1114 | =back |
1115 | |
10976519 |
1116 | A convenient shortcut to |
1117 | C<< $self->storage->deployment_statements($self, @args) >>. |
1118 | Returns the SQL statements used by L</deploy> and |
1119 | L<DBIx::Class::Schema::Storage/deploy>. |
0e0ce6c1 |
1120 | |
1121 | =cut |
1122 | |
1123 | sub deployment_statements { |
7ad93f5a |
1124 | my $self = shift; |
0e0ce6c1 |
1125 | |
1126 | $self->throw_exception("Can't generate deployment statements without a storage") |
1127 | if not $self->storage; |
1128 | |
7ad93f5a |
1129 | $self->storage->deployment_statements($self, @_); |
0e0ce6c1 |
1130 | } |
1131 | |
6dfbe2f8 |
1132 | =head2 create_ddl_dir |
c0f61310 |
1133 | |
1134 | =over 4 |
1135 | |
10976519 |
1136 | =item Arguments: See L<DBIx::Class::Storage::DBI/create_ddl_dir> |
c0f61310 |
1137 | |
1138 | =back |
1139 | |
fd323bf1 |
1140 | A convenient shortcut to |
10976519 |
1141 | C<< $self->storage->create_ddl_dir($self, @args) >>. |
c9d2e0a2 |
1142 | |
10976519 |
1143 | Creates an SQL file based on the Schema, for each of the specified |
1144 | database types, in the given directory. |
c9d2e0a2 |
1145 | |
c0f61310 |
1146 | =cut |
1147 | |
6e73ac25 |
1148 | sub create_ddl_dir { |
e673f011 |
1149 | my $self = shift; |
1150 | |
1151 | $self->throw_exception("Can't create_ddl_dir without storage") unless $self->storage; |
1152 | $self->storage->create_ddl_dir($self, @_); |
1153 | } |
1154 | |
e63a82f7 |
1155 | =head2 ddl_filename |
9b83fccd |
1156 | |
c9d2e0a2 |
1157 | =over 4 |
1158 | |
99a74c4a |
1159 | =item Arguments: $database-type, $version, $directory, $preversion |
c9d2e0a2 |
1160 | |
829517d4 |
1161 | =item Return value: $normalised_filename |
1162 | |
c9d2e0a2 |
1163 | =back |
1164 | |
99a74c4a |
1165 | my $filename = $table->ddl_filename($type, $version, $dir, $preversion) |
c9d2e0a2 |
1166 | |
1167 | This method is called by C<create_ddl_dir> to compose a file name out of |
1168 | the supplied directory, database type and version number. The default file |
1169 | name format is: C<$dir$schema-$version-$type.sql>. |
9b83fccd |
1170 | |
c9d2e0a2 |
1171 | You may override this method in your schema if you wish to use a different |
1172 | format. |
9b83fccd |
1173 | |
1acfef8e |
1174 | WARNING |
1175 | |
1176 | Prior to DBIx::Class version 0.08100 this method had a different signature: |
1177 | |
1178 | my $filename = $table->ddl_filename($type, $dir, $version, $preversion) |
1179 | |
1180 | In recent versions variables $dir and $version were reversed in order to |
fd323bf1 |
1181 | bring the signature in line with other Schema/Storage methods. If you |
1acfef8e |
1182 | really need to maintain backward compatibility, you can do the following |
1183 | in any overriding methods: |
1184 | |
1185 | ($dir, $version) = ($version, $dir) if ($DBIx::Class::VERSION < 0.08100); |
1186 | |
9b83fccd |
1187 | =cut |
1188 | |
6e73ac25 |
1189 | sub ddl_filename { |
99a74c4a |
1190 | my ($self, $type, $version, $dir, $preversion) = @_; |
e673f011 |
1191 | |
99a74c4a |
1192 | my $filename = ref($self); |
1193 | $filename =~ s/::/-/g; |
1194 | $filename = File::Spec->catfile($dir, "$filename-$version-$type.sql"); |
1195 | $filename =~ s/$version/$preversion-$version/ if($preversion); |
d4daee7b |
1196 | |
99a74c4a |
1197 | return $filename; |
e673f011 |
1198 | } |
1199 | |
4146e3da |
1200 | =head2 thaw |
1201 | |
fd323bf1 |
1202 | Provided as the recommended way of thawing schema objects. You can call |
4146e3da |
1203 | C<Storable::thaw> directly if you wish, but the thawed objects will not have a |
48580715 |
1204 | reference to any schema, so are rather useless. |
4146e3da |
1205 | |
1206 | =cut |
1207 | |
1208 | sub thaw { |
1209 | my ($self, $obj) = @_; |
1210 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1211 | return Storable::thaw($obj); |
1212 | } |
1213 | |
1214 | =head2 freeze |
1215 | |
26148d36 |
1216 | This doesn't actually do anything more than call L<Storable/nfreeze>, it is just |
48580715 |
1217 | provided here for symmetry. |
4146e3da |
1218 | |
d2f3e87b |
1219 | =cut |
1220 | |
4146e3da |
1221 | sub freeze { |
26148d36 |
1222 | return Storable::nfreeze($_[1]); |
4146e3da |
1223 | } |
1224 | |
1225 | =head2 dclone |
1226 | |
1477a478 |
1227 | =over 4 |
1228 | |
1229 | =item Arguments: $object |
1230 | |
1231 | =item Return Value: dcloned $object |
1232 | |
1233 | =back |
1234 | |
9e9ecfda |
1235 | Recommended way of dcloning L<DBIx::Class::Row> and L<DBIx::Class::ResultSet> |
1236 | objects so their references to the schema object |
1237 | (which itself is B<not> cloned) are properly maintained. |
4146e3da |
1238 | |
1239 | =cut |
1240 | |
1241 | sub dclone { |
1242 | my ($self, $obj) = @_; |
1243 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1244 | return Storable::dclone($obj); |
1245 | } |
1246 | |
93e4d41a |
1247 | =head2 schema_version |
1248 | |
829517d4 |
1249 | Returns the current schema class' $VERSION in a normalised way. |
93e4d41a |
1250 | |
1251 | =cut |
1252 | |
1253 | sub schema_version { |
1254 | my ($self) = @_; |
1255 | my $class = ref($self)||$self; |
1256 | |
1257 | # does -not- use $schema->VERSION |
1258 | # since that varies in results depending on if version.pm is installed, and if |
1259 | # so the perl or XS versions. If you want this to change, bug the version.pm |
1260 | # author to make vpp and vxs behave the same. |
1261 | |
1262 | my $version; |
1263 | { |
1264 | no strict 'refs'; |
1265 | $version = ${"${class}::VERSION"}; |
1266 | } |
1267 | return $version; |
1268 | } |
1269 | |
829517d4 |
1270 | |
1271 | =head2 register_class |
1272 | |
1273 | =over 4 |
1274 | |
1275 | =item Arguments: $moniker, $component_class |
1276 | |
1277 | =back |
1278 | |
fd323bf1 |
1279 | This method is called by L</load_namespaces> and L</load_classes> to install the found classes into your Schema. You should be using those instead of this one. |
829517d4 |
1280 | |
1281 | You will only need this method if you have your Result classes in |
1282 | files which are not named after the packages (or all in the same |
1283 | file). You may also need it to register classes at runtime. |
1284 | |
1285 | Registers a class which isa DBIx::Class::ResultSourceProxy. Equivalent to |
1286 | calling: |
1287 | |
1288 | $schema->register_source($moniker, $component_class->result_source_instance); |
1289 | |
1290 | =cut |
1291 | |
1292 | sub register_class { |
1293 | my ($self, $moniker, $to_register) = @_; |
1e36ef62 |
1294 | $self->register_source($moniker => $to_register->result_source_instance); |
829517d4 |
1295 | } |
1296 | |
1297 | =head2 register_source |
1298 | |
1299 | =over 4 |
1300 | |
1301 | =item Arguments: $moniker, $result_source |
1302 | |
1303 | =back |
1304 | |
1305 | This method is called by L</register_class>. |
1306 | |
1307 | Registers the L<DBIx::Class::ResultSource> in the schema with the given |
1308 | moniker. |
1309 | |
1310 | =cut |
1311 | |
1312 | sub register_source { |
1313 | my $self = shift; |
1314 | |
1315 | $self->_register_source(@_); |
1316 | } |
1317 | |
98cabed3 |
1318 | =head2 unregister_source |
1319 | |
1320 | =over 4 |
1321 | |
1322 | =item Arguments: $moniker |
1323 | |
1324 | =back |
1325 | |
1326 | Removes the L<DBIx::Class::ResultSource> from the schema for the given moniker. |
1327 | |
1328 | =cut |
1329 | |
1330 | sub unregister_source { |
1331 | my $self = shift; |
1332 | |
1333 | $self->_unregister_source(@_); |
1334 | } |
1335 | |
829517d4 |
1336 | =head2 register_extra_source |
1337 | |
1338 | =over 4 |
1339 | |
1340 | =item Arguments: $moniker, $result_source |
1341 | |
1342 | =back |
1343 | |
fd323bf1 |
1344 | As L</register_source> but should be used if the result class already |
829517d4 |
1345 | has a source and you want to register an extra one. |
1346 | |
1347 | =cut |
1348 | |
1349 | sub register_extra_source { |
1350 | my $self = shift; |
1351 | |
1352 | $self->_register_source(@_, { extra => 1 }); |
1353 | } |
1354 | |
1355 | sub _register_source { |
1356 | my ($self, $moniker, $source, $params) = @_; |
1357 | |
6d4f9d94 |
1358 | my $orig_source = $source; |
2461ae19 |
1359 | |
0e6c5d58 |
1360 | $source = $source->new({ %$source, source_name => $moniker }); |
2461ae19 |
1361 | $source->schema($self); |
6298a324 |
1362 | weaken $source->{schema} if ref($self); |
2461ae19 |
1363 | |
1364 | my $rs_class = $source->result_class; |
829517d4 |
1365 | |
1366 | my %reg = %{$self->source_registrations}; |
1367 | $reg{$moniker} = $source; |
1368 | $self->source_registrations(\%reg); |
1369 | |
829517d4 |
1370 | return if ($params->{extra}); |
5dfe40b8 |
1371 | return unless defined($rs_class) && $rs_class->can('result_source_instance'); |
829517d4 |
1372 | |
2461ae19 |
1373 | my %map = %{$self->class_mappings}; |
f18d2d04 |
1374 | if ( |
1375 | exists $map{$rs_class} |
1376 | and |
1377 | $map{$rs_class} ne $moniker |
1378 | and |
1379 | $rs_class->result_source_instance ne $orig_source |
1380 | ) { |
2461ae19 |
1381 | carp "$rs_class already has a source, use register_extra_source for additional sources"; |
829517d4 |
1382 | } |
2461ae19 |
1383 | $map{$rs_class} = $moniker; |
1384 | $self->class_mappings(\%map); |
829517d4 |
1385 | } |
1386 | |
50261284 |
1387 | { |
1388 | my $global_phase_destroy; |
1389 | |
66917da3 |
1390 | # SpeedyCGI runs END blocks every cycle but keeps object instances |
1391 | # hence we have to disable the globaldestroy hatch, and rely on the |
1392 | # eval trap below (which appears to work, but is risky done so late) |
1393 | END { $global_phase_destroy = 1 unless $CGI::SpeedyCGI::i_am_speedy } |
50261284 |
1394 | |
1395 | sub DESTROY { |
1396 | return if $global_phase_destroy; |
1397 | |
1398 | my $self = shift; |
1399 | my $srcs = $self->source_registrations; |
1400 | |
1401 | for my $moniker (keys %$srcs) { |
1402 | # find first source that is not about to be GCed (someone other than $self |
1403 | # holds a reference to it) and reattach to it, weakening our own link |
66917da3 |
1404 | # |
1405 | # during global destruction (if we have not yet bailed out) this will throw |
1406 | # which will serve as a signal to not try doing anything else |
50261284 |
1407 | if (ref $srcs->{$moniker} and svref_2object($srcs->{$moniker})->REFCNT > 1) { |
66917da3 |
1408 | local $@; |
1409 | eval { |
1410 | $srcs->{$moniker}->schema($self); |
1411 | 1; |
1412 | } or do { |
1413 | $global_phase_destroy = 1; |
1414 | last; |
1415 | }; |
1416 | |
50261284 |
1417 | weaken $srcs->{$moniker}; |
1418 | last; |
1419 | } |
1420 | } |
1421 | } |
1422 | } |
1423 | |
829517d4 |
1424 | sub _unregister_source { |
1425 | my ($self, $moniker) = @_; |
fd323bf1 |
1426 | my %reg = %{$self->source_registrations}; |
829517d4 |
1427 | |
1428 | my $source = delete $reg{$moniker}; |
1429 | $self->source_registrations(\%reg); |
1430 | if ($source->result_class) { |
1431 | my %map = %{$self->class_mappings}; |
1432 | delete $map{$source->result_class}; |
1433 | $self->class_mappings(\%map); |
1434 | } |
1435 | } |
1436 | |
1437 | |
1438 | =head2 compose_connection (DEPRECATED) |
1439 | |
1440 | =over 4 |
1441 | |
1442 | =item Arguments: $target_namespace, @db_info |
1443 | |
1444 | =item Return Value: $new_schema |
1445 | |
1446 | =back |
1447 | |
1448 | DEPRECATED. You probably wanted compose_namespace. |
1449 | |
1450 | Actually, you probably just wanted to call connect. |
1451 | |
1452 | =begin hidden |
1453 | |
1454 | (hidden due to deprecation) |
1455 | |
1456 | Calls L<DBIx::Class::Schema/"compose_namespace"> to the target namespace, |
1457 | calls L<DBIx::Class::Schema/connection> with @db_info on the new schema, |
1458 | then injects the L<DBix::Class::ResultSetProxy> component and a |
1459 | resultset_instance classdata entry on all the new classes, in order to support |
1460 | $target_namespaces::$class->search(...) method calls. |
1461 | |
1462 | This is primarily useful when you have a specific need for class method access |
1463 | to a connection. In normal usage it is preferred to call |
1464 | L<DBIx::Class::Schema/connect> and use the resulting schema object to operate |
1465 | on L<DBIx::Class::ResultSet> objects with L<DBIx::Class::Schema/resultset> for |
1466 | more information. |
1467 | |
1468 | =end hidden |
1469 | |
1470 | =cut |
1471 | |
1472 | { |
1473 | my $warn; |
1474 | |
1475 | sub compose_connection { |
1476 | my ($self, $target, @info) = @_; |
1477 | |
341d5ede |
1478 | carp "compose_connection deprecated as of 0.08000" |
829517d4 |
1479 | unless ($INC{"DBIx/Class/CDBICompat.pm"} || $warn++); |
1480 | |
1481 | my $base = 'DBIx::Class::ResultSetProxy'; |
9780718f |
1482 | try { |
1483 | eval "require ${base};" |
1484 | } |
1485 | catch { |
1486 | $self->throw_exception |
1487 | ("No arguments to load_classes and couldn't load ${base} ($_)") |
1488 | }; |
d4daee7b |
1489 | |
829517d4 |
1490 | if ($self eq $target) { |
1491 | # Pathological case, largely caused by the docs on early C::M::DBIC::Plain |
1492 | foreach my $moniker ($self->sources) { |
1493 | my $source = $self->source($moniker); |
1494 | my $class = $source->result_class; |
1495 | $self->inject_base($class, $base); |
1496 | $class->mk_classdata(resultset_instance => $source->resultset); |
1497 | $class->mk_classdata(class_resolver => $self); |
1498 | } |
1499 | $self->connection(@info); |
1500 | return $self; |
1501 | } |
d4daee7b |
1502 | |
829517d4 |
1503 | my $schema = $self->compose_namespace($target, $base); |
1504 | { |
1505 | no strict 'refs'; |
1506 | my $name = join '::', $target, 'schema'; |
6298a324 |
1507 | *$name = subname $name, sub { $schema }; |
829517d4 |
1508 | } |
d4daee7b |
1509 | |
829517d4 |
1510 | $schema->connection(@info); |
1511 | foreach my $moniker ($schema->sources) { |
1512 | my $source = $schema->source($moniker); |
1513 | my $class = $source->result_class; |
1514 | #warn "$moniker $class $source ".$source->storage; |
1515 | $class->mk_classdata(result_source_instance => $source); |
1516 | $class->mk_classdata(resultset_instance => $source->resultset); |
1517 | $class->mk_classdata(class_resolver => $schema); |
1518 | } |
1519 | return $schema; |
1520 | } |
1521 | } |
1522 | |
a02675cd |
1523 | 1; |
c2da098a |
1524 | |
c2da098a |
1525 | =head1 AUTHORS |
1526 | |
daec44b8 |
1527 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
c2da098a |
1528 | |
1529 | =head1 LICENSE |
1530 | |
1531 | You may distribute this code under the same terms as Perl itself. |
1532 | |
1533 | =cut |