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 | |
829517d4 |
32 | # load all Result classes in Library/Schema/Result/ |
33 | __PACKAGE__->load_namespaces(); |
c2da098a |
34 | |
829517d4 |
35 | package Library::Schema::Result::CD; |
03312470 |
36 | use base qw/DBIx::Class/; |
829517d4 |
37 | __PACKAGE__->load_components(qw/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 | |
829517d4 |
50 | # fetch objects using Library::Schema::Result::DVD |
24d67825 |
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 | |
829517d4 |
64 | =head1 SETUP METHODS |
c2da098a |
65 | |
829517d4 |
66 | =head2 load_namespaces |
87c4e602 |
67 | |
27f01d1f |
68 | =over 4 |
69 | |
829517d4 |
70 | =item Arguments: %options? |
27f01d1f |
71 | |
72 | =back |
076652e8 |
73 | |
829517d4 |
74 | __PACKAGE__->load_namespaces(); |
66d9ef6b |
75 | |
829517d4 |
76 | __PACKAGE__->load_namespaces( |
77 | result_namespace => 'Res', |
78 | resultset_namespace => 'RSet', |
79 | default_resultset_class => '+MyDB::Othernamespace::RSet', |
80 | ); |
076652e8 |
81 | |
829517d4 |
82 | With no arguments, this method uses L<Module::Find> to load all your |
83 | Result classes from a sub-namespace F<Result> under your Schema class' |
84 | namespace. Eg. With a Schema of I<MyDB::Schema> all files in |
85 | I<MyDB::Schema::Result> are assumed to be Result classes. |
c2da098a |
86 | |
829517d4 |
87 | It also finds all ResultSet classes in the namespace F<ResultSet> and |
88 | loads them into the appropriate Result classes using for you. The |
89 | matching is done by assuming the package name of the ResultSet class |
90 | is the same as that of the Result class. |
74b92d9a |
91 | |
672687db |
92 | You will be warned if ResultSet classes are discovered for which there |
829517d4 |
93 | are no matching Result classes like this: |
87c4e602 |
94 | |
829517d4 |
95 | load_namespaces found ResultSet class $classname with no corresponding Result class |
27f01d1f |
96 | |
829517d4 |
97 | If a Result class is found to already have a ResultSet class set using |
98 | L</resultset_class> to some other class, you will be warned like this: |
27f01d1f |
99 | |
829517d4 |
100 | We found ResultSet class '$rs_class' for '$result', but it seems |
101 | that you had already set '$result' to use '$rs_set' instead |
076652e8 |
102 | |
829517d4 |
103 | Both of the sub-namespaces are configurable if you don't like the defaults, |
104 | via the options C<result_namespace> and C<resultset_namespace>. |
076652e8 |
105 | |
829517d4 |
106 | If (and only if) you specify the option C<default_resultset_class>, any found |
107 | Result classes for which we do not find a corresponding |
108 | ResultSet class will have their C<resultset_class> set to |
109 | C<default_resultset_class>. |
076652e8 |
110 | |
829517d4 |
111 | All of the namespace and classname options to this method are relative to |
112 | the schema classname by default. To specify a fully-qualified name, prefix |
113 | it with a literal C<+>. |
2a4d9487 |
114 | |
829517d4 |
115 | Examples: |
2a4d9487 |
116 | |
829517d4 |
117 | # load My::Schema::Result::CD, My::Schema::Result::Artist, |
118 | # My::Schema::ResultSet::CD, etc... |
119 | My::Schema->load_namespaces; |
2a4d9487 |
120 | |
829517d4 |
121 | # Override everything to use ugly names. |
122 | # In this example, if there is a My::Schema::Res::Foo, but no matching |
123 | # My::Schema::RSets::Foo, then Foo will have its |
124 | # resultset_class set to My::Schema::RSetBase |
125 | My::Schema->load_namespaces( |
126 | result_namespace => 'Res', |
127 | resultset_namespace => 'RSets', |
128 | default_resultset_class => 'RSetBase', |
129 | ); |
2a4d9487 |
130 | |
829517d4 |
131 | # Put things in other namespaces |
132 | My::Schema->load_namespaces( |
133 | result_namespace => '+Some::Place::Results', |
134 | resultset_namespace => '+Another::Place::RSets', |
135 | ); |
2a4d9487 |
136 | |
829517d4 |
137 | If you'd like to use multiple namespaces of each type, simply use an arrayref |
138 | of namespaces for that option. In the case that the same result |
139 | (or resultset) class exists in multiple namespaces, the latter entries in |
140 | your list of namespaces will override earlier ones. |
2a4d9487 |
141 | |
829517d4 |
142 | My::Schema->load_namespaces( |
143 | # My::Schema::Results_C::Foo takes precedence over My::Schema::Results_B::Foo : |
144 | result_namespace => [ 'Results_A', 'Results_B', 'Results_C' ], |
145 | resultset_namespace => [ '+Some::Place::RSets', 'RSets' ], |
146 | ); |
2a4d9487 |
147 | |
148 | =cut |
149 | |
829517d4 |
150 | # Pre-pends our classname to the given relative classname or |
151 | # class namespace, unless there is a '+' prefix, which will |
152 | # be stripped. |
153 | sub _expand_relative_name { |
154 | my ($class, $name) = @_; |
155 | return if !$name; |
156 | $name = $class . '::' . $name if ! ($name =~ s/^\+//); |
157 | return $name; |
2a4d9487 |
158 | } |
159 | |
f3405058 |
160 | # Finds all modules in the supplied namespace, or if omitted in the |
161 | # namespace of $class. Untaints all findings as they can be assumed |
162 | # to be safe |
163 | sub _findallmod { |
164 | my $proto = shift; |
165 | my $ns = shift || ref $proto || $proto; |
166 | |
167 | my @mods = Module::Find::findallmod($ns); |
168 | |
169 | # try to untaint module names. mods where this fails |
170 | # are left alone so we don't have to change the old behavior |
171 | no locale; # localized \w doesn't untaint expression |
172 | return map { $_ =~ m/^( (?:\w+::)* \w+ )$/x ? $1 : $_ } @mods; |
173 | } |
174 | |
829517d4 |
175 | # returns a hash of $shortname => $fullname for every package |
176 | # found in the given namespaces ($shortname is with the $fullname's |
177 | # namespace stripped off) |
178 | sub _map_namespaces { |
179 | my ($class, @namespaces) = @_; |
6eec9003 |
180 | |
829517d4 |
181 | my @results_hash; |
182 | foreach my $namespace (@namespaces) { |
183 | push( |
184 | @results_hash, |
185 | map { (substr($_, length "${namespace}::"), $_) } |
f3405058 |
186 | $class->_findallmod($namespace) |
829517d4 |
187 | ); |
0dc79249 |
188 | } |
27f01d1f |
189 | |
829517d4 |
190 | @results_hash; |
ea20d0fd |
191 | } |
192 | |
829517d4 |
193 | sub load_namespaces { |
194 | my ($class, %args) = @_; |
0dc79249 |
195 | |
829517d4 |
196 | my $result_namespace = delete $args{result_namespace} || 'Result'; |
197 | my $resultset_namespace = delete $args{resultset_namespace} || 'ResultSet'; |
198 | my $default_resultset_class = delete $args{default_resultset_class}; |
0dc79249 |
199 | |
829517d4 |
200 | $class->throw_exception('load_namespaces: unknown option(s): ' |
201 | . join(q{,}, map { qq{'$_'} } keys %args)) |
202 | if scalar keys %args; |
0dc79249 |
203 | |
829517d4 |
204 | $default_resultset_class |
205 | = $class->_expand_relative_name($default_resultset_class); |
9b1ba0f2 |
206 | |
829517d4 |
207 | for my $arg ($result_namespace, $resultset_namespace) { |
208 | $arg = [ $arg ] if !ref($arg) && $arg; |
9b1ba0f2 |
209 | |
829517d4 |
210 | $class->throw_exception('load_namespaces: namespace arguments must be ' |
211 | . 'a simple string or an arrayref') |
212 | if ref($arg) ne 'ARRAY'; |
9b1ba0f2 |
213 | |
829517d4 |
214 | $_ = $class->_expand_relative_name($_) for (@$arg); |
215 | } |
ea20d0fd |
216 | |
829517d4 |
217 | my %results = $class->_map_namespaces(@$result_namespace); |
218 | my %resultsets = $class->_map_namespaces(@$resultset_namespace); |
27f01d1f |
219 | |
829517d4 |
220 | my @to_register; |
221 | { |
222 | no warnings 'redefine'; |
223 | local *Class::C3::reinitialize = sub { }; |
224 | use warnings 'redefine'; |
27f01d1f |
225 | |
3d27f771 |
226 | # ensure classes are loaded and fetch properly sorted classes |
227 | $class->ensure_class_loaded($_) foreach(values %results); |
228 | my @subclass_last = sort { $results{$a}->isa($results{$b}) } keys(%results); |
229 | |
230 | foreach my $result (@subclass_last) { |
829517d4 |
231 | my $result_class = $results{$result}; |
82b01c38 |
232 | |
829517d4 |
233 | my $rs_class = delete $resultsets{$result}; |
234 | my $rs_set = $result_class->resultset_class; |
3d27f771 |
235 | |
829517d4 |
236 | if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') { |
3d27f771 |
237 | if($rs_class && $rs_class ne $rs_set) { |
829517d4 |
238 | warn "We found ResultSet class '$rs_class' for '$result', but it seems " |
239 | . "that you had already set '$result' to use '$rs_set' instead"; |
240 | } |
241 | } |
242 | elsif($rs_class ||= $default_resultset_class) { |
243 | $class->ensure_class_loaded($rs_class); |
244 | $result_class->resultset_class($rs_class); |
245 | } |
82b01c38 |
246 | |
0e6c5d58 |
247 | my $source_name = $result_class->source_name || $result; |
248 | |
249 | push(@to_register, [ $source_name, $result_class ]); |
829517d4 |
250 | } |
251 | } |
ea20d0fd |
252 | |
829517d4 |
253 | foreach (sort keys %resultsets) { |
254 | warn "load_namespaces found ResultSet class $_ with no " |
255 | . 'corresponding Result class'; |
256 | } |
ea20d0fd |
257 | |
829517d4 |
258 | Class::C3->reinitialize; |
259 | $class->register_class(@$_) for (@to_register); |
ea20d0fd |
260 | |
829517d4 |
261 | return; |
ea20d0fd |
262 | } |
263 | |
87c4e602 |
264 | =head2 load_classes |
265 | |
27f01d1f |
266 | =over 4 |
267 | |
268 | =item Arguments: @classes?, { $namespace => [ @classes ] }+ |
269 | |
270 | =back |
076652e8 |
271 | |
829517d4 |
272 | Alternative method to L</load_namespaces> which you should look at |
273 | using if you can. |
274 | |
82b01c38 |
275 | With no arguments, this method uses L<Module::Find> to find all classes under |
276 | the schema's namespace. Otherwise, this method loads the classes you specify |
277 | (using L<use>), and registers them (using L</"register_class">). |
076652e8 |
278 | |
2053ab2a |
279 | It is possible to comment out classes with a leading C<#>, but note that perl |
280 | will think it's a mistake (trying to use a comment in a qw list), so you'll |
281 | need to add C<no warnings 'qw';> before your load_classes call. |
5ce32fc1 |
282 | |
829517d4 |
283 | If any classes found do not appear to be Result class files, you will |
284 | get the following warning: |
285 | |
286 | Failed to load $comp_class. Can't find source_name method. Is |
287 | $comp_class really a full DBIC result class? Fix it, move it elsewhere, |
288 | or make your load_classes call more specific. |
289 | |
2053ab2a |
290 | Example: |
82b01c38 |
291 | |
292 | My::Schema->load_classes(); # loads My::Schema::CD, My::Schema::Artist, |
75d07914 |
293 | # etc. (anything under the My::Schema namespace) |
82b01c38 |
294 | |
295 | # loads My::Schema::CD, My::Schema::Artist, Other::Namespace::Producer but |
296 | # not Other::Namespace::LinerNotes nor My::Schema::Track |
297 | My::Schema->load_classes(qw/ CD Artist #Track /, { |
298 | Other::Namespace => [qw/ Producer #LinerNotes /], |
299 | }); |
300 | |
076652e8 |
301 | =cut |
302 | |
a02675cd |
303 | sub load_classes { |
5ce32fc1 |
304 | my ($class, @params) = @_; |
bab77431 |
305 | |
5ce32fc1 |
306 | my %comps_for; |
bab77431 |
307 | |
5ce32fc1 |
308 | if (@params) { |
309 | foreach my $param (@params) { |
310 | if (ref $param eq 'ARRAY') { |
311 | # filter out commented entries |
312 | my @modules = grep { $_ !~ /^#/ } @$param; |
bab77431 |
313 | |
5ce32fc1 |
314 | push (@{$comps_for{$class}}, @modules); |
315 | } |
316 | elsif (ref $param eq 'HASH') { |
317 | # more than one namespace possible |
318 | for my $comp ( keys %$param ) { |
319 | # filter out commented entries |
320 | my @modules = grep { $_ !~ /^#/ } @{$param->{$comp}}; |
321 | |
322 | push (@{$comps_for{$comp}}, @modules); |
323 | } |
324 | } |
325 | else { |
326 | # filter out commented entries |
327 | push (@{$comps_for{$class}}, $param) if $param !~ /^#/; |
328 | } |
329 | } |
330 | } else { |
bc0c9800 |
331 | my @comp = map { substr $_, length "${class}::" } |
f3405058 |
332 | $class->_findallmod; |
5ce32fc1 |
333 | $comps_for{$class} = \@comp; |
41a6f8c0 |
334 | } |
5ce32fc1 |
335 | |
e6efde04 |
336 | my @to_register; |
337 | { |
338 | no warnings qw/redefine/; |
339 | local *Class::C3::reinitialize = sub { }; |
340 | foreach my $prefix (keys %comps_for) { |
341 | foreach my $comp (@{$comps_for{$prefix}||[]}) { |
342 | my $comp_class = "${prefix}::${comp}"; |
c037c03a |
343 | $class->ensure_class_loaded($comp_class); |
bab77431 |
344 | |
89271e56 |
345 | my $snsub = $comp_class->can('source_name'); |
346 | if(! $snsub ) { |
347 | warn "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."; |
348 | next; |
349 | } |
350 | $comp = $snsub->($comp_class) || $comp; |
351 | |
93405cf0 |
352 | push(@to_register, [ $comp, $comp_class ]); |
bfb2bd4f |
353 | } |
5ce32fc1 |
354 | } |
a02675cd |
355 | } |
e6efde04 |
356 | Class::C3->reinitialize; |
357 | |
358 | foreach my $to (@to_register) { |
359 | $class->register_class(@$to); |
360 | # if $class->can('result_source_instance'); |
361 | } |
a02675cd |
362 | } |
363 | |
829517d4 |
364 | =head2 storage_type |
2374c5ff |
365 | |
366 | =over 4 |
367 | |
829517d4 |
368 | =item Arguments: $storage_type|{$storage_type, \%args} |
369 | |
370 | =item Return value: $storage_type|{$storage_type, \%args} |
371 | |
372 | =item Default value: DBIx::Class::Storage::DBI |
2374c5ff |
373 | |
374 | =back |
375 | |
829517d4 |
376 | Set the storage class that will be instantiated when L</connect> is called. |
377 | If the classname starts with C<::>, the prefix C<DBIx::Class::Storage> is |
378 | assumed by L</connect>. |
2374c5ff |
379 | |
829517d4 |
380 | You want to use this to set subclasses of L<DBIx::Class::Storage::DBI> |
381 | in cases where the appropriate subclass is not autodetected, such as |
382 | when dealing with MSSQL via L<DBD::Sybase>, in which case you'd set it |
383 | to C<::DBI::Sybase::MSSQL>. |
85bd0538 |
384 | |
829517d4 |
385 | If your storage type requires instantiation arguments, those are |
386 | defined as a second argument in the form of a hashref and the entire |
387 | value needs to be wrapped into an arrayref or a hashref. We support |
388 | both types of refs here in order to play nice with your |
389 | Config::[class] or your choice. See |
390 | L<DBIx::Class::Storage::DBI::Replicated> for an example of this. |
0f4ec1d2 |
391 | |
829517d4 |
392 | =head2 exception_action |
f017c022 |
393 | |
829517d4 |
394 | =over 4 |
0f4ec1d2 |
395 | |
829517d4 |
396 | =item Arguments: $code_reference |
f017c022 |
397 | |
829517d4 |
398 | =item Return value: $code_reference |
85bd0538 |
399 | |
829517d4 |
400 | =item Default value: None |
2374c5ff |
401 | |
829517d4 |
402 | =back |
f017c022 |
403 | |
829517d4 |
404 | If C<exception_action> is set for this class/object, L</throw_exception> |
405 | will prefer to call this code reference with the exception as an argument, |
406 | rather than L<DBIx::Class::Exception/throw>. |
f017c022 |
407 | |
829517d4 |
408 | Your subroutine should probably just wrap the error in the exception |
409 | object/class of your choosing and rethrow. If, against all sage advice, |
410 | you'd like your C<exception_action> to suppress a particular exception |
411 | completely, simply have it return true. |
f017c022 |
412 | |
829517d4 |
413 | Example: |
f017c022 |
414 | |
829517d4 |
415 | package My::Schema; |
416 | use base qw/DBIx::Class::Schema/; |
417 | use My::ExceptionClass; |
418 | __PACKAGE__->exception_action(sub { My::ExceptionClass->throw(@_) }); |
419 | __PACKAGE__->load_classes; |
2374c5ff |
420 | |
829517d4 |
421 | # or: |
422 | my $schema_obj = My::Schema->connect( .... ); |
423 | $schema_obj->exception_action(sub { My::ExceptionClass->throw(@_) }); |
0f4ec1d2 |
424 | |
829517d4 |
425 | # suppress all exceptions, like a moron: |
426 | $schema_obj->exception_action(sub { 1 }); |
25fb14bd |
427 | |
829517d4 |
428 | =head2 stacktrace |
f017c022 |
429 | |
829517d4 |
430 | =over 4 |
2374c5ff |
431 | |
829517d4 |
432 | =item Arguments: boolean |
2374c5ff |
433 | |
829517d4 |
434 | =back |
2374c5ff |
435 | |
829517d4 |
436 | Whether L</throw_exception> should include stack trace information. |
437 | Defaults to false normally, but defaults to true if C<$ENV{DBIC_TRACE}> |
438 | is true. |
0f4ec1d2 |
439 | |
829517d4 |
440 | =head2 sqlt_deploy_hook |
0f4ec1d2 |
441 | |
829517d4 |
442 | =over |
0f4ec1d2 |
443 | |
829517d4 |
444 | =item Arguments: $sqlt_schema |
2374c5ff |
445 | |
829517d4 |
446 | =back |
2374c5ff |
447 | |
829517d4 |
448 | An optional sub which you can declare in your own Schema class that will get |
449 | passed the L<SQL::Translator::Schema> object when you deploy the schema via |
450 | L</create_ddl_dir> or L</deploy>. |
0f4ec1d2 |
451 | |
829517d4 |
452 | For an example of what you can do with this, see |
453 | L<DBIx::Class::Manual::Cookbook/Adding Indexes And Functions To Your SQL>. |
fdcd8145 |
454 | |
2d7d8459 |
455 | Note that sqlt_deploy_hook is called by L</deployment_statements>, which in turn |
456 | is called before L</deploy>. Therefore the hook can be used only to manipulate |
457 | the L<SQL::Translator::Schema> object before it is turned into SQL fed to the |
458 | database. If you want to execute post-deploy statements which can not be generated |
459 | by L<SQL::Translator>, the currently suggested method is to overload L</deploy> |
460 | and use L<dbh_do|DBIx::Class::Storage::DBI/dbh_do>. |
461 | |
829517d4 |
462 | =head1 METHODS |
2374c5ff |
463 | |
829517d4 |
464 | =head2 connect |
87c4e602 |
465 | |
27f01d1f |
466 | =over 4 |
467 | |
829517d4 |
468 | =item Arguments: @connectinfo |
429bd4f1 |
469 | |
d601dc88 |
470 | =item Return Value: $new_schema |
27f01d1f |
471 | |
472 | =back |
076652e8 |
473 | |
829517d4 |
474 | Creates and returns a new Schema object. The connection info set on it |
475 | is used to create a new instance of the storage backend and set it on |
476 | the Schema object. |
1c133e22 |
477 | |
829517d4 |
478 | See L<DBIx::Class::Storage::DBI/"connect_info"> for DBI-specific |
5d52945a |
479 | syntax on the C<@connectinfo> argument, or L<DBIx::Class::Storage> in |
829517d4 |
480 | general. |
1c133e22 |
481 | |
5d52945a |
482 | Note that C<connect_info> expects an arrayref of arguments, but |
483 | C<connect> does not. C<connect> wraps it's arguments in an arrayref |
484 | before passing them to C<connect_info>. |
485 | |
4c7d99ca |
486 | =head3 Overloading |
487 | |
488 | C<connect> is a convenience method. It is equivalent to calling |
489 | $schema->clone->connection(@connectinfo). To write your own overloaded |
490 | version, overload L</connection> instead. |
491 | |
076652e8 |
492 | =cut |
493 | |
829517d4 |
494 | sub connect { shift->clone->connection(@_) } |
e678398e |
495 | |
829517d4 |
496 | =head2 resultset |
77254782 |
497 | |
27f01d1f |
498 | =over 4 |
499 | |
829517d4 |
500 | =item Arguments: $source_name |
82b01c38 |
501 | |
829517d4 |
502 | =item Return Value: $resultset |
27f01d1f |
503 | |
504 | =back |
13765dad |
505 | |
829517d4 |
506 | my $rs = $schema->resultset('DVD'); |
82b01c38 |
507 | |
829517d4 |
508 | Returns the L<DBIx::Class::ResultSet> object for the registered source |
509 | name. |
77254782 |
510 | |
511 | =cut |
512 | |
829517d4 |
513 | sub resultset { |
514 | my ($self, $moniker) = @_; |
515 | return $self->source($moniker)->resultset; |
b7951443 |
516 | } |
517 | |
829517d4 |
518 | =head2 sources |
6b43ba5f |
519 | |
520 | =over 4 |
521 | |
829517d4 |
522 | =item Return Value: @source_names |
6b43ba5f |
523 | |
524 | =back |
525 | |
829517d4 |
526 | my @source_names = $schema->sources; |
6b43ba5f |
527 | |
829517d4 |
528 | Lists names of all the sources registered on this Schema object. |
6b43ba5f |
529 | |
829517d4 |
530 | =cut |
161fb223 |
531 | |
829517d4 |
532 | sub sources { return keys %{shift->source_registrations}; } |
106d5f3b |
533 | |
829517d4 |
534 | =head2 source |
87c4e602 |
535 | |
27f01d1f |
536 | =over 4 |
537 | |
829517d4 |
538 | =item Arguments: $source_name |
66d9ef6b |
539 | |
829517d4 |
540 | =item Return Value: $result_source |
27f01d1f |
541 | |
542 | =back |
82b01c38 |
543 | |
829517d4 |
544 | my $source = $schema->source('Book'); |
85f78622 |
545 | |
829517d4 |
546 | Returns the L<DBIx::Class::ResultSource> object for the registered |
547 | source name. |
66d9ef6b |
548 | |
549 | =cut |
550 | |
829517d4 |
551 | sub source { |
552 | my ($self, $moniker) = @_; |
553 | my $sreg = $self->source_registrations; |
554 | return $sreg->{$moniker} if exists $sreg->{$moniker}; |
555 | |
556 | # if we got here, they probably passed a full class name |
557 | my $mapped = $self->class_mappings->{$moniker}; |
558 | $self->throw_exception("Can't find source for ${moniker}") |
559 | unless $mapped && exists $sreg->{$mapped}; |
560 | return $sreg->{$mapped}; |
161fb223 |
561 | } |
562 | |
829517d4 |
563 | =head2 class |
87c4e602 |
564 | |
27f01d1f |
565 | =over 4 |
566 | |
829517d4 |
567 | =item Arguments: $source_name |
66d9ef6b |
568 | |
829517d4 |
569 | =item Return Value: $classname |
27f01d1f |
570 | |
571 | =back |
82b01c38 |
572 | |
829517d4 |
573 | my $class = $schema->class('CD'); |
574 | |
575 | Retrieves the Result class name for the given source name. |
66d9ef6b |
576 | |
577 | =cut |
578 | |
829517d4 |
579 | sub class { |
580 | my ($self, $moniker) = @_; |
581 | return $self->source($moniker)->result_class; |
582 | } |
08b515f1 |
583 | |
4012acd8 |
584 | =head2 txn_do |
08b515f1 |
585 | |
4012acd8 |
586 | =over 4 |
08b515f1 |
587 | |
4012acd8 |
588 | =item Arguments: C<$coderef>, @coderef_args? |
08b515f1 |
589 | |
4012acd8 |
590 | =item Return Value: The return value of $coderef |
08b515f1 |
591 | |
4012acd8 |
592 | =back |
08b515f1 |
593 | |
4012acd8 |
594 | Executes C<$coderef> with (optional) arguments C<@coderef_args> atomically, |
595 | returning its result (if any). Equivalent to calling $schema->storage->txn_do. |
596 | See L<DBIx::Class::Storage/"txn_do"> for more information. |
08b515f1 |
597 | |
4012acd8 |
598 | This interface is preferred over using the individual methods L</txn_begin>, |
599 | L</txn_commit>, and L</txn_rollback> below. |
08b515f1 |
600 | |
281719d2 |
601 | WARNING: If you are connected with C<AutoCommit => 0> the transaction is |
602 | considered nested, and you will still need to call L</txn_commit> to write your |
603 | changes when appropriate. You will also want to connect with C<auto_savepoint => |
604 | 1> to get partial rollback to work, if the storage driver for your database |
605 | supports it. |
606 | |
607 | Connecting with C<AutoCommit => 1> is recommended. |
608 | |
4012acd8 |
609 | =cut |
08b515f1 |
610 | |
4012acd8 |
611 | sub txn_do { |
612 | my $self = shift; |
08b515f1 |
613 | |
4012acd8 |
614 | $self->storage or $self->throw_exception |
615 | ('txn_do called on $schema without storage'); |
08b515f1 |
616 | |
4012acd8 |
617 | $self->storage->txn_do(@_); |
618 | } |
66d9ef6b |
619 | |
6936e902 |
620 | =head2 txn_scope_guard |
75c8a7ab |
621 | |
89028f42 |
622 | Runs C<txn_scope_guard> on the schema's storage. See |
623 | L<DBIx::Class::Storage/txn_scope_guard>. |
75c8a7ab |
624 | |
b85be4c1 |
625 | =cut |
626 | |
1bc193ac |
627 | sub txn_scope_guard { |
628 | my $self = shift; |
629 | |
630 | $self->storage or $self->throw_exception |
631 | ('txn_scope_guard called on $schema without storage'); |
632 | |
633 | $self->storage->txn_scope_guard(@_); |
634 | } |
635 | |
4012acd8 |
636 | =head2 txn_begin |
a62cf8d4 |
637 | |
4012acd8 |
638 | Begins a transaction (does nothing if AutoCommit is off). Equivalent to |
639 | calling $schema->storage->txn_begin. See |
640 | L<DBIx::Class::Storage::DBI/"txn_begin"> for more information. |
27f01d1f |
641 | |
4012acd8 |
642 | =cut |
82b01c38 |
643 | |
4012acd8 |
644 | sub txn_begin { |
645 | my $self = shift; |
27f01d1f |
646 | |
4012acd8 |
647 | $self->storage or $self->throw_exception |
648 | ('txn_begin called on $schema without storage'); |
a62cf8d4 |
649 | |
4012acd8 |
650 | $self->storage->txn_begin; |
651 | } |
a62cf8d4 |
652 | |
4012acd8 |
653 | =head2 txn_commit |
a62cf8d4 |
654 | |
4012acd8 |
655 | Commits the current transaction. Equivalent to calling |
656 | $schema->storage->txn_commit. See L<DBIx::Class::Storage::DBI/"txn_commit"> |
657 | for more information. |
a62cf8d4 |
658 | |
4012acd8 |
659 | =cut |
a62cf8d4 |
660 | |
4012acd8 |
661 | sub txn_commit { |
662 | my $self = shift; |
a62cf8d4 |
663 | |
4012acd8 |
664 | $self->storage or $self->throw_exception |
665 | ('txn_commit called on $schema without storage'); |
a62cf8d4 |
666 | |
4012acd8 |
667 | $self->storage->txn_commit; |
668 | } |
70634260 |
669 | |
4012acd8 |
670 | =head2 txn_rollback |
a62cf8d4 |
671 | |
4012acd8 |
672 | Rolls back the current transaction. Equivalent to calling |
673 | $schema->storage->txn_rollback. See |
674 | L<DBIx::Class::Storage::DBI/"txn_rollback"> for more information. |
a62cf8d4 |
675 | |
676 | =cut |
677 | |
4012acd8 |
678 | sub txn_rollback { |
679 | my $self = shift; |
a62cf8d4 |
680 | |
19630353 |
681 | $self->storage or $self->throw_exception |
4012acd8 |
682 | ('txn_rollback called on $schema without storage'); |
a62cf8d4 |
683 | |
4012acd8 |
684 | $self->storage->txn_rollback; |
a62cf8d4 |
685 | } |
686 | |
829517d4 |
687 | =head2 storage |
66d9ef6b |
688 | |
829517d4 |
689 | my $storage = $schema->storage; |
04786a4c |
690 | |
829517d4 |
691 | Returns the L<DBIx::Class::Storage> object for this Schema. Grab this |
692 | if you want to turn on SQL statement debugging at runtime, or set the |
693 | quote character. For the default storage, the documentation can be |
694 | found in L<DBIx::Class::Storage::DBI>. |
66d9ef6b |
695 | |
87c4e602 |
696 | =head2 populate |
697 | |
27f01d1f |
698 | =over 4 |
699 | |
16c5f7d3 |
700 | =item Arguments: $source_name, \@data; |
27f01d1f |
701 | |
829517d4 |
702 | =item Return value: \@$objects | nothing |
703 | |
27f01d1f |
704 | =back |
a37a4697 |
705 | |
16c5f7d3 |
706 | Pass this method a resultsource name, and an arrayref of |
707 | arrayrefs. The arrayrefs should contain a list of column names, |
708 | followed by one or many sets of matching data for the given columns. |
709 | |
744076d8 |
710 | In void context, C<insert_bulk> in L<DBIx::Class::Storage::DBI> is used |
711 | to insert the data, as this is a fast method. However, insert_bulk currently |
712 | assumes that your datasets all contain the same type of values, using scalar |
713 | references in a column in one row, and not in another will probably not work. |
714 | |
715 | Otherwise, each set of data is inserted into the database using |
16c5f7d3 |
716 | L<DBIx::Class::ResultSet/create>, and a arrayref of the resulting row |
717 | objects is returned. |
82b01c38 |
718 | |
719 | i.e., |
a37a4697 |
720 | |
24d67825 |
721 | $schema->populate('Artist', [ |
722 | [ qw/artistid name/ ], |
723 | [ 1, 'Popular Band' ], |
724 | [ 2, 'Indie Band' ], |
a62cf8d4 |
725 | ... |
726 | ]); |
5a93e138 |
727 | |
728 | Since wantarray context is basically the same as looping over $rs->create(...) |
729 | you won't see any performance benefits and in this case the method is more for |
730 | convenience. Void context sends the column information directly to storage |
731 | using <DBI>s bulk insert method. So the performance will be much better for |
732 | storages that support this method. |
733 | |
734 | Because of this difference in the way void context inserts rows into your |
735 | database you need to note how this will effect any loaded components that |
736 | override or augment insert. For example if you are using a component such |
737 | as L<DBIx::Class::UUIDColumns> to populate your primary keys you MUST use |
738 | wantarray context if you want the PKs automatically created. |
a37a4697 |
739 | |
740 | =cut |
741 | |
742 | sub populate { |
743 | my ($self, $name, $data) = @_; |
c4e67d31 |
744 | if(my $rs = $self->resultset($name)) { |
745 | if(defined wantarray) { |
746 | return $rs->populate($data); |
747 | } else { |
748 | $rs->populate($data); |
54e0bd06 |
749 | } |
c4e67d31 |
750 | } else { |
751 | $self->throw_exception("$name is not a resultset"); |
8b93a938 |
752 | } |
a37a4697 |
753 | } |
754 | |
829517d4 |
755 | =head2 connection |
756 | |
757 | =over 4 |
758 | |
759 | =item Arguments: @args |
760 | |
761 | =item Return Value: $new_schema |
762 | |
763 | =back |
764 | |
765 | Similar to L</connect> except sets the storage object and connection |
766 | data in-place on the Schema class. You should probably be calling |
767 | L</connect> to get a proper Schema object instead. |
768 | |
4c7d99ca |
769 | =head3 Overloading |
770 | |
771 | Overload C<connection> to change the behaviour of C<connect>. |
829517d4 |
772 | |
773 | =cut |
774 | |
775 | sub connection { |
776 | my ($self, @info) = @_; |
777 | return $self if !@info && $self->storage; |
778 | |
779 | my ($storage_class, $args) = ref $self->storage_type ? |
780 | ($self->_normalize_storage_type($self->storage_type),{}) : ($self->storage_type, {}); |
781 | |
782 | $storage_class = 'DBIx::Class::Storage'.$storage_class |
783 | if $storage_class =~ m/^::/; |
784 | eval "require ${storage_class};"; |
785 | $self->throw_exception( |
786 | "No arguments to load_classes and couldn't load ${storage_class} ($@)" |
787 | ) if $@; |
788 | my $storage = $storage_class->new($self=>$args); |
789 | $storage->connect_info(\@info); |
790 | $self->storage($storage); |
791 | return $self; |
792 | } |
793 | |
794 | sub _normalize_storage_type { |
795 | my ($self, $storage_type) = @_; |
796 | if(ref $storage_type eq 'ARRAY') { |
797 | return @$storage_type; |
798 | } elsif(ref $storage_type eq 'HASH') { |
799 | return %$storage_type; |
800 | } else { |
801 | $self->throw_exception('Unsupported REFTYPE given: '. ref $storage_type); |
802 | } |
803 | } |
804 | |
805 | =head2 compose_namespace |
82cc0386 |
806 | |
807 | =over 4 |
808 | |
829517d4 |
809 | =item Arguments: $target_namespace, $additional_base_class? |
810 | |
811 | =item Retur Value: $new_schema |
812 | |
813 | =back |
814 | |
815 | For each L<DBIx::Class::ResultSource> in the schema, this method creates a |
816 | class in the target namespace (e.g. $target_namespace::CD, |
817 | $target_namespace::Artist) that inherits from the corresponding classes |
818 | attached to the current schema. |
819 | |
820 | It also attaches a corresponding L<DBIx::Class::ResultSource> object to the |
821 | new $schema object. If C<$additional_base_class> is given, the new composed |
822 | classes will inherit from first the corresponding classe from the current |
823 | schema then the base class. |
824 | |
825 | For example, for a schema with My::Schema::CD and My::Schema::Artist classes, |
826 | |
827 | $schema->compose_namespace('My::DB', 'Base::Class'); |
828 | print join (', ', @My::DB::CD::ISA) . "\n"; |
829 | print join (', ', @My::DB::Artist::ISA) ."\n"; |
830 | |
831 | will produce the output |
832 | |
833 | My::Schema::CD, Base::Class |
834 | My::Schema::Artist, Base::Class |
835 | |
836 | =cut |
837 | |
838 | # this might be oversimplified |
839 | # sub compose_namespace { |
840 | # my ($self, $target, $base) = @_; |
841 | |
842 | # my $schema = $self->clone; |
843 | # foreach my $moniker ($schema->sources) { |
844 | # my $source = $schema->source($moniker); |
845 | # my $target_class = "${target}::${moniker}"; |
846 | # $self->inject_base( |
847 | # $target_class => $source->result_class, ($base ? $base : ()) |
848 | # ); |
849 | # $source->result_class($target_class); |
850 | # $target_class->result_source_instance($source) |
851 | # if $target_class->can('result_source_instance'); |
852 | # $schema->register_source($moniker, $source); |
853 | # } |
854 | # return $schema; |
855 | # } |
856 | |
857 | sub compose_namespace { |
858 | my ($self, $target, $base) = @_; |
859 | my $schema = $self->clone; |
860 | { |
861 | no warnings qw/redefine/; |
862 | # local *Class::C3::reinitialize = sub { }; |
863 | foreach my $moniker ($schema->sources) { |
864 | my $source = $schema->source($moniker); |
865 | my $target_class = "${target}::${moniker}"; |
866 | $self->inject_base( |
867 | $target_class => $source->result_class, ($base ? $base : ()) |
868 | ); |
869 | $source->result_class($target_class); |
870 | $target_class->result_source_instance($source) |
871 | if $target_class->can('result_source_instance'); |
872 | $schema->register_source($moniker, $source); |
873 | } |
874 | } |
875 | # Class::C3->reinitialize(); |
876 | { |
877 | no strict 'refs'; |
878 | no warnings 'redefine'; |
879 | foreach my $meth (qw/class source resultset/) { |
880 | *{"${target}::${meth}"} = |
881 | sub { shift->schema->$meth(@_) }; |
882 | } |
883 | } |
884 | return $schema; |
885 | } |
886 | |
887 | sub setup_connection_class { |
888 | my ($class, $target, @info) = @_; |
889 | $class->inject_base($target => 'DBIx::Class::DB'); |
890 | #$target->load_components('DB'); |
891 | $target->connection(@info); |
892 | } |
893 | |
894 | =head2 svp_begin |
895 | |
896 | Creates a new savepoint (does nothing outside a transaction). |
897 | Equivalent to calling $schema->storage->svp_begin. See |
898 | L<DBIx::Class::Storage::DBI/"svp_begin"> for more information. |
899 | |
900 | =cut |
901 | |
902 | sub svp_begin { |
903 | my ($self, $name) = @_; |
904 | |
905 | $self->storage or $self->throw_exception |
906 | ('svp_begin called on $schema without storage'); |
907 | |
908 | $self->storage->svp_begin($name); |
909 | } |
910 | |
911 | =head2 svp_release |
912 | |
913 | Releases a savepoint (does nothing outside a transaction). |
914 | Equivalent to calling $schema->storage->svp_release. See |
915 | L<DBIx::Class::Storage::DBI/"svp_release"> for more information. |
916 | |
917 | =cut |
918 | |
919 | sub svp_release { |
920 | my ($self, $name) = @_; |
921 | |
922 | $self->storage or $self->throw_exception |
923 | ('svp_release called on $schema without storage'); |
82cc0386 |
924 | |
829517d4 |
925 | $self->storage->svp_release($name); |
926 | } |
82cc0386 |
927 | |
829517d4 |
928 | =head2 svp_rollback |
db5dc233 |
929 | |
829517d4 |
930 | Rollback to a savepoint (does nothing outside a transaction). |
931 | Equivalent to calling $schema->storage->svp_rollback. See |
932 | L<DBIx::Class::Storage::DBI/"svp_rollback"> for more information. |
82cc0386 |
933 | |
829517d4 |
934 | =cut |
82cc0386 |
935 | |
829517d4 |
936 | sub svp_rollback { |
937 | my ($self, $name) = @_; |
82cc0386 |
938 | |
829517d4 |
939 | $self->storage or $self->throw_exception |
940 | ('svp_rollback called on $schema without storage'); |
82cc0386 |
941 | |
829517d4 |
942 | $self->storage->svp_rollback($name); |
943 | } |
db5dc233 |
944 | |
829517d4 |
945 | =head2 clone |
613397e7 |
946 | |
84c5863b |
947 | =over 4 |
613397e7 |
948 | |
829517d4 |
949 | =item Return Value: $new_schema |
613397e7 |
950 | |
951 | =back |
952 | |
829517d4 |
953 | Clones the schema and its associated result_source objects and returns the |
954 | copy. |
955 | |
956 | =cut |
957 | |
958 | sub clone { |
959 | my ($self) = @_; |
960 | my $clone = { (ref $self ? %$self : ()) }; |
961 | bless $clone, (ref $self || $self); |
962 | |
963 | $clone->class_mappings({ %{$clone->class_mappings} }); |
964 | $clone->source_registrations({ %{$clone->source_registrations} }); |
965 | foreach my $moniker ($self->sources) { |
966 | my $source = $self->source($moniker); |
967 | my $new = $source->new($source); |
968 | # we use extra here as we want to leave the class_mappings as they are |
969 | # but overwrite the source_registrations entry with the new source |
970 | $clone->register_extra_source($moniker => $new); |
971 | } |
972 | $clone->storage->set_schema($clone) if $clone->storage; |
973 | return $clone; |
974 | } |
613397e7 |
975 | |
5160b401 |
976 | =head2 throw_exception |
701da8c4 |
977 | |
75d07914 |
978 | =over 4 |
82b01c38 |
979 | |
ebc77b53 |
980 | =item Arguments: $message |
82b01c38 |
981 | |
982 | =back |
983 | |
984 | Throws an exception. Defaults to using L<Carp::Clan> to report errors from |
db5dc233 |
985 | user's perspective. See L</exception_action> for details on overriding |
4b946902 |
986 | this method's behavior. If L</stacktrace> is turned on, C<throw_exception>'s |
987 | default behavior will provide a detailed stack trace. |
701da8c4 |
988 | |
989 | =cut |
990 | |
991 | sub throw_exception { |
82cc0386 |
992 | my $self = shift; |
4981dc70 |
993 | |
994 | DBIx::Class::Exception->throw($_[0], $self->stacktrace) |
995 | if !$self->exception_action || !$self->exception_action->(@_); |
701da8c4 |
996 | } |
997 | |
dfccde48 |
998 | =head2 deploy |
1c339d71 |
999 | |
82b01c38 |
1000 | =over 4 |
1001 | |
6e73ac25 |
1002 | =item Arguments: $sqlt_args, $dir |
82b01c38 |
1003 | |
1004 | =back |
1005 | |
1006 | Attempts to deploy the schema to the current storage using L<SQL::Translator>. |
ec6704d4 |
1007 | |
51bace1c |
1008 | See L<SQL::Translator/METHODS> for a list of values for C<$sqlt_args>. The most |
1009 | common value for this would be C<< { add_drop_table => 1, } >> to have the SQL |
3e82fc27 |
1010 | produced include a DROP TABLE statement for each table created. For quoting |
1011 | purposes use C<producer_options> value with C<quote_table_names> and |
1012 | C<quote_field_names>. |
51bace1c |
1013 | |
499adf63 |
1014 | Additionally, the DBIx::Class parser accepts a C<sources> parameter as a hash |
1015 | ref or an array ref, containing a list of source to deploy. If present, then |
0e2c6809 |
1016 | only the sources listed will get deployed. Furthermore, you can use the |
1017 | C<add_fk_index> parser parameter to prevent the parser from creating an index for each |
1018 | FK. |
499adf63 |
1019 | |
1c339d71 |
1020 | =cut |
1021 | |
1022 | sub deploy { |
6e73ac25 |
1023 | my ($self, $sqltargs, $dir) = @_; |
1c339d71 |
1024 | $self->throw_exception("Can't deploy without storage") unless $self->storage; |
6e73ac25 |
1025 | $self->storage->deploy($self, undef, $sqltargs, $dir); |
1c339d71 |
1026 | } |
1027 | |
0e0ce6c1 |
1028 | =head2 deployment_statements |
1029 | |
1030 | =over 4 |
1031 | |
7ad93f5a |
1032 | =item Arguments: $rdbms_type, $sqlt_args, $dir |
0e0ce6c1 |
1033 | |
829517d4 |
1034 | =item Return value: $listofstatements |
1035 | |
0e0ce6c1 |
1036 | =back |
1037 | |
829517d4 |
1038 | A convenient shortcut to storage->deployment_statements(). Returns the |
1039 | SQL statements used by L</deploy> and |
1040 | L<DBIx::Class::Schema::Storage/deploy>. C<$rdbms_type> provides the |
1041 | (optional) SQLT (not DBI) database driver name for which the SQL |
1042 | statements are produced. If not supplied, the type is determined by |
1043 | interrogating the current connection. The other two arguments are |
1044 | identical to those of L</deploy>. |
0e0ce6c1 |
1045 | |
1046 | =cut |
1047 | |
1048 | sub deployment_statements { |
7ad93f5a |
1049 | my $self = shift; |
0e0ce6c1 |
1050 | |
1051 | $self->throw_exception("Can't generate deployment statements without a storage") |
1052 | if not $self->storage; |
1053 | |
7ad93f5a |
1054 | $self->storage->deployment_statements($self, @_); |
0e0ce6c1 |
1055 | } |
1056 | |
c0f61310 |
1057 | =head2 create_ddl_dir (EXPERIMENTAL) |
1058 | |
1059 | =over 4 |
1060 | |
c9d2e0a2 |
1061 | =item Arguments: \@databases, $version, $directory, $preversion, $sqlt_args |
c0f61310 |
1062 | |
1063 | =back |
1064 | |
1065 | Creates an SQL file based on the Schema, for each of the specified |
c9d2e0a2 |
1066 | database types, in the given directory. Given a previous version number, |
1067 | this will also create a file containing the ALTER TABLE statements to |
1068 | transform the previous schema into the current one. Note that these |
1069 | statements may contain DROP TABLE or DROP COLUMN statements that can |
1070 | potentially destroy data. |
1071 | |
1072 | The file names are created using the C<ddl_filename> method below, please |
1073 | override this method in your schema if you would like a different file |
1074 | name format. For the ALTER file, the same format is used, replacing |
1075 | $version in the name with "$preversion-$version". |
1076 | |
0e2c6809 |
1077 | See L<DBIx::Class::Schema/deploy> for details of $sqlt_args. |
1078 | |
c9d2e0a2 |
1079 | If no arguments are passed, then the following default values are used: |
1080 | |
1081 | =over 4 |
1082 | |
1083 | =item databases - ['MySQL', 'SQLite', 'PostgreSQL'] |
1084 | |
b1f9d92e |
1085 | =item version - $schema->schema_version |
c9d2e0a2 |
1086 | |
1087 | =item directory - './' |
1088 | |
1089 | =item preversion - <none> |
1090 | |
1091 | =back |
c0f61310 |
1092 | |
1093 | Note that this feature is currently EXPERIMENTAL and may not work correctly |
1094 | across all databases, or fully handle complex relationships. |
1095 | |
c9d2e0a2 |
1096 | WARNING: Please check all SQL files created, before applying them. |
1097 | |
c0f61310 |
1098 | =cut |
1099 | |
6e73ac25 |
1100 | sub create_ddl_dir { |
e673f011 |
1101 | my $self = shift; |
1102 | |
1103 | $self->throw_exception("Can't create_ddl_dir without storage") unless $self->storage; |
1104 | $self->storage->create_ddl_dir($self, @_); |
1105 | } |
1106 | |
e63a82f7 |
1107 | =head2 ddl_filename |
9b83fccd |
1108 | |
c9d2e0a2 |
1109 | =over 4 |
1110 | |
99a74c4a |
1111 | =item Arguments: $database-type, $version, $directory, $preversion |
c9d2e0a2 |
1112 | |
829517d4 |
1113 | =item Return value: $normalised_filename |
1114 | |
c9d2e0a2 |
1115 | =back |
1116 | |
99a74c4a |
1117 | my $filename = $table->ddl_filename($type, $version, $dir, $preversion) |
c9d2e0a2 |
1118 | |
1119 | This method is called by C<create_ddl_dir> to compose a file name out of |
1120 | the supplied directory, database type and version number. The default file |
1121 | name format is: C<$dir$schema-$version-$type.sql>. |
9b83fccd |
1122 | |
c9d2e0a2 |
1123 | You may override this method in your schema if you wish to use a different |
1124 | format. |
9b83fccd |
1125 | |
1126 | =cut |
1127 | |
6e73ac25 |
1128 | sub ddl_filename { |
99a74c4a |
1129 | my ($self, $type, $version, $dir, $preversion) = @_; |
e673f011 |
1130 | |
99a74c4a |
1131 | my $filename = ref($self); |
1132 | $filename =~ s/::/-/g; |
1133 | $filename = File::Spec->catfile($dir, "$filename-$version-$type.sql"); |
1134 | $filename =~ s/$version/$preversion-$version/ if($preversion); |
1135 | |
1136 | return $filename; |
e673f011 |
1137 | } |
1138 | |
4146e3da |
1139 | =head2 thaw |
1140 | |
829517d4 |
1141 | Provided as the recommended way of thawing schema objects. You can call |
4146e3da |
1142 | C<Storable::thaw> directly if you wish, but the thawed objects will not have a |
1143 | reference to any schema, so are rather useless |
1144 | |
1145 | =cut |
1146 | |
1147 | sub thaw { |
1148 | my ($self, $obj) = @_; |
1149 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1150 | return Storable::thaw($obj); |
1151 | } |
1152 | |
1153 | =head2 freeze |
1154 | |
1155 | This doesn't actualy do anything more than call L<Storable/freeze>, it is just |
1156 | provided here for symetry. |
1157 | |
d2f3e87b |
1158 | =cut |
1159 | |
4146e3da |
1160 | sub freeze { |
1161 | return Storable::freeze($_[1]); |
1162 | } |
1163 | |
1164 | =head2 dclone |
1165 | |
1166 | Recommeneded way of dcloning objects. This is needed to properly maintain |
1167 | references to the schema object (which itself is B<not> cloned.) |
1168 | |
1169 | =cut |
1170 | |
1171 | sub dclone { |
1172 | my ($self, $obj) = @_; |
1173 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1174 | return Storable::dclone($obj); |
1175 | } |
1176 | |
93e4d41a |
1177 | =head2 schema_version |
1178 | |
829517d4 |
1179 | Returns the current schema class' $VERSION in a normalised way. |
93e4d41a |
1180 | |
1181 | =cut |
1182 | |
1183 | sub schema_version { |
1184 | my ($self) = @_; |
1185 | my $class = ref($self)||$self; |
1186 | |
1187 | # does -not- use $schema->VERSION |
1188 | # since that varies in results depending on if version.pm is installed, and if |
1189 | # so the perl or XS versions. If you want this to change, bug the version.pm |
1190 | # author to make vpp and vxs behave the same. |
1191 | |
1192 | my $version; |
1193 | { |
1194 | no strict 'refs'; |
1195 | $version = ${"${class}::VERSION"}; |
1196 | } |
1197 | return $version; |
1198 | } |
1199 | |
829517d4 |
1200 | |
1201 | =head2 register_class |
1202 | |
1203 | =over 4 |
1204 | |
1205 | =item Arguments: $moniker, $component_class |
1206 | |
1207 | =back |
1208 | |
1209 | 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. |
1210 | |
1211 | You will only need this method if you have your Result classes in |
1212 | files which are not named after the packages (or all in the same |
1213 | file). You may also need it to register classes at runtime. |
1214 | |
1215 | Registers a class which isa DBIx::Class::ResultSourceProxy. Equivalent to |
1216 | calling: |
1217 | |
1218 | $schema->register_source($moniker, $component_class->result_source_instance); |
1219 | |
1220 | =cut |
1221 | |
1222 | sub register_class { |
1223 | my ($self, $moniker, $to_register) = @_; |
1e36ef62 |
1224 | $self->register_source($moniker => $to_register->result_source_instance); |
829517d4 |
1225 | } |
1226 | |
1227 | =head2 register_source |
1228 | |
1229 | =over 4 |
1230 | |
1231 | =item Arguments: $moniker, $result_source |
1232 | |
1233 | =back |
1234 | |
1235 | This method is called by L</register_class>. |
1236 | |
1237 | Registers the L<DBIx::Class::ResultSource> in the schema with the given |
1238 | moniker. |
1239 | |
1240 | =cut |
1241 | |
1242 | sub register_source { |
1243 | my $self = shift; |
1244 | |
1245 | $self->_register_source(@_); |
1246 | } |
1247 | |
1248 | =head2 register_extra_source |
1249 | |
1250 | =over 4 |
1251 | |
1252 | =item Arguments: $moniker, $result_source |
1253 | |
1254 | =back |
1255 | |
1256 | As L</register_source> but should be used if the result class already |
1257 | has a source and you want to register an extra one. |
1258 | |
1259 | =cut |
1260 | |
1261 | sub register_extra_source { |
1262 | my $self = shift; |
1263 | |
1264 | $self->_register_source(@_, { extra => 1 }); |
1265 | } |
1266 | |
1267 | sub _register_source { |
1268 | my ($self, $moniker, $source, $params) = @_; |
1269 | |
6d4f9d94 |
1270 | my $orig_source = $source; |
2461ae19 |
1271 | |
0e6c5d58 |
1272 | $source = $source->new({ %$source, source_name => $moniker }); |
2461ae19 |
1273 | $source->schema($self); |
1274 | weaken($source->{schema}) if ref($self); |
1275 | |
1276 | my $rs_class = $source->result_class; |
829517d4 |
1277 | |
1278 | my %reg = %{$self->source_registrations}; |
1279 | $reg{$moniker} = $source; |
1280 | $self->source_registrations(\%reg); |
1281 | |
829517d4 |
1282 | return if ($params->{extra}); |
5dfe40b8 |
1283 | return unless defined($rs_class) && $rs_class->can('result_source_instance'); |
829517d4 |
1284 | |
2461ae19 |
1285 | my %map = %{$self->class_mappings}; |
f18d2d04 |
1286 | if ( |
1287 | exists $map{$rs_class} |
1288 | and |
1289 | $map{$rs_class} ne $moniker |
1290 | and |
1291 | $rs_class->result_source_instance ne $orig_source |
1292 | ) { |
2461ae19 |
1293 | carp "$rs_class already has a source, use register_extra_source for additional sources"; |
829517d4 |
1294 | } |
2461ae19 |
1295 | $map{$rs_class} = $moniker; |
1296 | $self->class_mappings(\%map); |
829517d4 |
1297 | } |
1298 | |
1299 | sub _unregister_source { |
1300 | my ($self, $moniker) = @_; |
1301 | my %reg = %{$self->source_registrations}; |
1302 | |
1303 | my $source = delete $reg{$moniker}; |
1304 | $self->source_registrations(\%reg); |
1305 | if ($source->result_class) { |
1306 | my %map = %{$self->class_mappings}; |
1307 | delete $map{$source->result_class}; |
1308 | $self->class_mappings(\%map); |
1309 | } |
1310 | } |
1311 | |
1312 | |
1313 | =head2 compose_connection (DEPRECATED) |
1314 | |
1315 | =over 4 |
1316 | |
1317 | =item Arguments: $target_namespace, @db_info |
1318 | |
1319 | =item Return Value: $new_schema |
1320 | |
1321 | =back |
1322 | |
1323 | DEPRECATED. You probably wanted compose_namespace. |
1324 | |
1325 | Actually, you probably just wanted to call connect. |
1326 | |
1327 | =begin hidden |
1328 | |
1329 | (hidden due to deprecation) |
1330 | |
1331 | Calls L<DBIx::Class::Schema/"compose_namespace"> to the target namespace, |
1332 | calls L<DBIx::Class::Schema/connection> with @db_info on the new schema, |
1333 | then injects the L<DBix::Class::ResultSetProxy> component and a |
1334 | resultset_instance classdata entry on all the new classes, in order to support |
1335 | $target_namespaces::$class->search(...) method calls. |
1336 | |
1337 | This is primarily useful when you have a specific need for class method access |
1338 | to a connection. In normal usage it is preferred to call |
1339 | L<DBIx::Class::Schema/connect> and use the resulting schema object to operate |
1340 | on L<DBIx::Class::ResultSet> objects with L<DBIx::Class::Schema/resultset> for |
1341 | more information. |
1342 | |
1343 | =end hidden |
1344 | |
1345 | =cut |
1346 | |
1347 | { |
1348 | my $warn; |
1349 | |
1350 | sub compose_connection { |
1351 | my ($self, $target, @info) = @_; |
1352 | |
1353 | warn "compose_connection deprecated as of 0.08000" |
1354 | unless ($INC{"DBIx/Class/CDBICompat.pm"} || $warn++); |
1355 | |
1356 | my $base = 'DBIx::Class::ResultSetProxy'; |
1357 | eval "require ${base};"; |
1358 | $self->throw_exception |
1359 | ("No arguments to load_classes and couldn't load ${base} ($@)") |
1360 | if $@; |
1361 | |
1362 | if ($self eq $target) { |
1363 | # Pathological case, largely caused by the docs on early C::M::DBIC::Plain |
1364 | foreach my $moniker ($self->sources) { |
1365 | my $source = $self->source($moniker); |
1366 | my $class = $source->result_class; |
1367 | $self->inject_base($class, $base); |
1368 | $class->mk_classdata(resultset_instance => $source->resultset); |
1369 | $class->mk_classdata(class_resolver => $self); |
1370 | } |
1371 | $self->connection(@info); |
1372 | return $self; |
1373 | } |
1374 | |
1375 | my $schema = $self->compose_namespace($target, $base); |
1376 | { |
1377 | no strict 'refs'; |
1378 | my $name = join '::', $target, 'schema'; |
1379 | *$name = Sub::Name::subname $name, sub { $schema }; |
1380 | } |
1381 | |
1382 | $schema->connection(@info); |
1383 | foreach my $moniker ($schema->sources) { |
1384 | my $source = $schema->source($moniker); |
1385 | my $class = $source->result_class; |
1386 | #warn "$moniker $class $source ".$source->storage; |
1387 | $class->mk_classdata(result_source_instance => $source); |
1388 | $class->mk_classdata(resultset_instance => $source->resultset); |
1389 | $class->mk_classdata(class_resolver => $schema); |
1390 | } |
1391 | return $schema; |
1392 | } |
1393 | } |
1394 | |
a02675cd |
1395 | 1; |
c2da098a |
1396 | |
c2da098a |
1397 | =head1 AUTHORS |
1398 | |
daec44b8 |
1399 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
c2da098a |
1400 | |
1401 | =head1 LICENSE |
1402 | |
1403 | You may distribute this code under the same terms as Perl itself. |
1404 | |
1405 | =cut |