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/; |
551e711a |
8 | use Scalar::Util (); |
c9d2e0a2 |
9 | use File::Spec; |
ddc0a6c8 |
10 | use Sub::Name (); |
329d7385 |
11 | use 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; |
d88ecca6 |
36 | use base qw/DBIx::Class::Core/; |
37 | |
38 | __PACKAGE__->load_components(qw/InflateColumn::DateTime/); # for example |
24d67825 |
39 | __PACKAGE__->table('cd'); |
c2da098a |
40 | |
5d9076f2 |
41 | # Elsewhere in your code: |
24d67825 |
42 | my $schema1 = Library::Schema->connect( |
a3d93194 |
43 | $dsn, |
44 | $user, |
45 | $password, |
ef131d82 |
46 | { AutoCommit => 1 }, |
a3d93194 |
47 | ); |
bab77431 |
48 | |
24d67825 |
49 | my $schema2 = Library::Schema->connect($coderef_returning_dbh); |
c2da098a |
50 | |
829517d4 |
51 | # fetch objects using Library::Schema::Result::DVD |
24d67825 |
52 | my $resultset = $schema1->resultset('DVD')->search( ... ); |
53 | my @dvd_objects = $schema2->resultset('DVD')->search( ... ); |
c2da098a |
54 | |
55 | =head1 DESCRIPTION |
56 | |
a3d93194 |
57 | Creates database classes based on a schema. This is the recommended way to |
58 | use L<DBIx::Class> and allows you to use more than one concurrent connection |
59 | with your classes. |
429bd4f1 |
60 | |
03312470 |
61 | NB: If you're used to L<Class::DBI> it's worth reading the L</SYNOPSIS> |
2053ab2a |
62 | carefully, as DBIx::Class does things a little differently. Note in |
03312470 |
63 | particular which module inherits off which. |
64 | |
829517d4 |
65 | =head1 SETUP METHODS |
c2da098a |
66 | |
829517d4 |
67 | =head2 load_namespaces |
87c4e602 |
68 | |
27f01d1f |
69 | =over 4 |
70 | |
829517d4 |
71 | =item Arguments: %options? |
27f01d1f |
72 | |
73 | =back |
076652e8 |
74 | |
829517d4 |
75 | __PACKAGE__->load_namespaces(); |
66d9ef6b |
76 | |
829517d4 |
77 | __PACKAGE__->load_namespaces( |
78 | result_namespace => 'Res', |
79 | resultset_namespace => 'RSet', |
80 | default_resultset_class => '+MyDB::Othernamespace::RSet', |
81 | ); |
076652e8 |
82 | |
829517d4 |
83 | With no arguments, this method uses L<Module::Find> to load all your |
84 | Result classes from a sub-namespace F<Result> under your Schema class' |
85 | namespace. Eg. With a Schema of I<MyDB::Schema> all files in |
86 | I<MyDB::Schema::Result> are assumed to be Result classes. |
c2da098a |
87 | |
829517d4 |
88 | It also finds all ResultSet classes in the namespace F<ResultSet> and |
89 | loads them into the appropriate Result classes using for you. The |
90 | matching is done by assuming the package name of the ResultSet class |
91 | is the same as that of the Result class. |
74b92d9a |
92 | |
672687db |
93 | You will be warned if ResultSet classes are discovered for which there |
829517d4 |
94 | are no matching Result classes like this: |
87c4e602 |
95 | |
829517d4 |
96 | load_namespaces found ResultSet class $classname with no corresponding Result class |
27f01d1f |
97 | |
829517d4 |
98 | If a Result class is found to already have a ResultSet class set using |
99 | L</resultset_class> to some other class, you will be warned like this: |
27f01d1f |
100 | |
829517d4 |
101 | We found ResultSet class '$rs_class' for '$result', but it seems |
102 | that you had already set '$result' to use '$rs_set' instead |
076652e8 |
103 | |
829517d4 |
104 | Both of the sub-namespaces are configurable if you don't like the defaults, |
105 | via the options C<result_namespace> and C<resultset_namespace>. |
076652e8 |
106 | |
829517d4 |
107 | If (and only if) you specify the option C<default_resultset_class>, any found |
108 | Result classes for which we do not find a corresponding |
109 | ResultSet class will have their C<resultset_class> set to |
110 | C<default_resultset_class>. |
076652e8 |
111 | |
829517d4 |
112 | All of the namespace and classname options to this method are relative to |
113 | the schema classname by default. To specify a fully-qualified name, prefix |
114 | it with a literal C<+>. |
2a4d9487 |
115 | |
829517d4 |
116 | Examples: |
2a4d9487 |
117 | |
829517d4 |
118 | # load My::Schema::Result::CD, My::Schema::Result::Artist, |
119 | # My::Schema::ResultSet::CD, etc... |
120 | My::Schema->load_namespaces; |
2a4d9487 |
121 | |
829517d4 |
122 | # Override everything to use ugly names. |
123 | # In this example, if there is a My::Schema::Res::Foo, but no matching |
124 | # My::Schema::RSets::Foo, then Foo will have its |
125 | # resultset_class set to My::Schema::RSetBase |
126 | My::Schema->load_namespaces( |
127 | result_namespace => 'Res', |
128 | resultset_namespace => 'RSets', |
129 | default_resultset_class => 'RSetBase', |
130 | ); |
2a4d9487 |
131 | |
829517d4 |
132 | # Put things in other namespaces |
133 | My::Schema->load_namespaces( |
134 | result_namespace => '+Some::Place::Results', |
135 | resultset_namespace => '+Another::Place::RSets', |
136 | ); |
2a4d9487 |
137 | |
829517d4 |
138 | If you'd like to use multiple namespaces of each type, simply use an arrayref |
139 | of namespaces for that option. In the case that the same result |
140 | (or resultset) class exists in multiple namespaces, the latter entries in |
141 | your list of namespaces will override earlier ones. |
2a4d9487 |
142 | |
829517d4 |
143 | My::Schema->load_namespaces( |
144 | # My::Schema::Results_C::Foo takes precedence over My::Schema::Results_B::Foo : |
145 | result_namespace => [ 'Results_A', 'Results_B', 'Results_C' ], |
146 | resultset_namespace => [ '+Some::Place::RSets', 'RSets' ], |
147 | ); |
2a4d9487 |
148 | |
149 | =cut |
150 | |
829517d4 |
151 | # Pre-pends our classname to the given relative classname or |
152 | # class namespace, unless there is a '+' prefix, which will |
153 | # be stripped. |
154 | sub _expand_relative_name { |
155 | my ($class, $name) = @_; |
156 | return if !$name; |
157 | $name = $class . '::' . $name if ! ($name =~ s/^\+//); |
158 | return $name; |
2a4d9487 |
159 | } |
160 | |
f3405058 |
161 | # Finds all modules in the supplied namespace, or if omitted in the |
162 | # namespace of $class. Untaints all findings as they can be assumed |
163 | # to be safe |
164 | sub _findallmod { |
165 | my $proto = shift; |
166 | my $ns = shift || ref $proto || $proto; |
167 | |
168 | my @mods = Module::Find::findallmod($ns); |
169 | |
170 | # try to untaint module names. mods where this fails |
171 | # are left alone so we don't have to change the old behavior |
172 | no locale; # localized \w doesn't untaint expression |
173 | return map { $_ =~ m/^( (?:\w+::)* \w+ )$/x ? $1 : $_ } @mods; |
174 | } |
175 | |
829517d4 |
176 | # returns a hash of $shortname => $fullname for every package |
b488020e |
177 | # found in the given namespaces ($shortname is with the $fullname's |
178 | # namespace stripped off) |
829517d4 |
179 | sub _map_namespaces { |
180 | my ($class, @namespaces) = @_; |
6eec9003 |
181 | |
829517d4 |
182 | my @results_hash; |
183 | foreach my $namespace (@namespaces) { |
184 | push( |
185 | @results_hash, |
186 | map { (substr($_, length "${namespace}::"), $_) } |
f3405058 |
187 | $class->_findallmod($namespace) |
829517d4 |
188 | ); |
0dc79249 |
189 | } |
27f01d1f |
190 | |
829517d4 |
191 | @results_hash; |
ea20d0fd |
192 | } |
193 | |
b488020e |
194 | # returns the result_source_instance for the passed class/object, |
195 | # or dies with an informative message (used by load_namespaces) |
196 | sub _ns_get_rsrc_instance { |
197 | my $class = shift; |
198 | my $rs = ref ($_[0]) || $_[0]; |
199 | |
200 | if ($rs->can ('result_source_instance') ) { |
201 | return $rs->result_source_instance; |
202 | } |
203 | else { |
204 | $class->throw_exception ( |
205 | "Attempt to load_namespaces() class $rs failed - are you sure this is a real Result Class?" |
206 | ); |
207 | } |
208 | } |
209 | |
829517d4 |
210 | sub load_namespaces { |
211 | my ($class, %args) = @_; |
0dc79249 |
212 | |
829517d4 |
213 | my $result_namespace = delete $args{result_namespace} || 'Result'; |
214 | my $resultset_namespace = delete $args{resultset_namespace} || 'ResultSet'; |
215 | my $default_resultset_class = delete $args{default_resultset_class}; |
0dc79249 |
216 | |
829517d4 |
217 | $class->throw_exception('load_namespaces: unknown option(s): ' |
218 | . join(q{,}, map { qq{'$_'} } keys %args)) |
219 | if scalar keys %args; |
0dc79249 |
220 | |
829517d4 |
221 | $default_resultset_class |
222 | = $class->_expand_relative_name($default_resultset_class); |
9b1ba0f2 |
223 | |
829517d4 |
224 | for my $arg ($result_namespace, $resultset_namespace) { |
225 | $arg = [ $arg ] if !ref($arg) && $arg; |
9b1ba0f2 |
226 | |
829517d4 |
227 | $class->throw_exception('load_namespaces: namespace arguments must be ' |
228 | . 'a simple string or an arrayref') |
229 | if ref($arg) ne 'ARRAY'; |
9b1ba0f2 |
230 | |
829517d4 |
231 | $_ = $class->_expand_relative_name($_) for (@$arg); |
232 | } |
ea20d0fd |
233 | |
829517d4 |
234 | my %results = $class->_map_namespaces(@$result_namespace); |
235 | my %resultsets = $class->_map_namespaces(@$resultset_namespace); |
27f01d1f |
236 | |
829517d4 |
237 | my @to_register; |
238 | { |
239 | no warnings 'redefine'; |
240 | local *Class::C3::reinitialize = sub { }; |
241 | use warnings 'redefine'; |
27f01d1f |
242 | |
3988ce40 |
243 | # ensure classes are loaded and attached in inheritance order |
3d27f771 |
244 | $class->ensure_class_loaded($_) foreach(values %results); |
3988ce40 |
245 | my %inh_idx; |
246 | my @subclass_last = sort { |
247 | |
248 | ($inh_idx{$a} ||= |
249 | scalar @{mro::get_linear_isa( $results{$a} )} |
250 | ) |
251 | |
252 | <=> |
253 | |
254 | ($inh_idx{$b} ||= |
255 | scalar @{mro::get_linear_isa( $results{$b} )} |
256 | ) |
257 | |
258 | } keys(%results); |
259 | |
3d27f771 |
260 | foreach my $result (@subclass_last) { |
829517d4 |
261 | my $result_class = $results{$result}; |
82b01c38 |
262 | |
829517d4 |
263 | my $rs_class = delete $resultsets{$result}; |
b488020e |
264 | my $rs_set = $class->_ns_get_rsrc_instance ($result_class)->resultset_class; |
3988ce40 |
265 | |
829517d4 |
266 | if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') { |
3d27f771 |
267 | if($rs_class && $rs_class ne $rs_set) { |
341d5ede |
268 | carp "We found ResultSet class '$rs_class' for '$result', but it seems " |
829517d4 |
269 | . "that you had already set '$result' to use '$rs_set' instead"; |
270 | } |
271 | } |
272 | elsif($rs_class ||= $default_resultset_class) { |
273 | $class->ensure_class_loaded($rs_class); |
b488020e |
274 | $class->_ns_get_rsrc_instance ($result_class)->resultset_class($rs_class); |
829517d4 |
275 | } |
82b01c38 |
276 | |
b488020e |
277 | my $source_name = $class->_ns_get_rsrc_instance ($result_class)->source_name || $result; |
0e6c5d58 |
278 | |
279 | push(@to_register, [ $source_name, $result_class ]); |
829517d4 |
280 | } |
281 | } |
ea20d0fd |
282 | |
829517d4 |
283 | foreach (sort keys %resultsets) { |
341d5ede |
284 | carp "load_namespaces found ResultSet class $_ with no " |
829517d4 |
285 | . 'corresponding Result class'; |
286 | } |
ea20d0fd |
287 | |
829517d4 |
288 | Class::C3->reinitialize; |
289 | $class->register_class(@$_) for (@to_register); |
ea20d0fd |
290 | |
829517d4 |
291 | return; |
ea20d0fd |
292 | } |
293 | |
87c4e602 |
294 | =head2 load_classes |
295 | |
27f01d1f |
296 | =over 4 |
297 | |
298 | =item Arguments: @classes?, { $namespace => [ @classes ] }+ |
299 | |
300 | =back |
076652e8 |
301 | |
1ab61457 |
302 | L</load_classes> is an alternative method to L</load_namespaces>, both of |
303 | which serve similar purposes, each with different advantages and disadvantages. |
304 | In the general case you should use L</load_namespaces>, unless you need to |
305 | be able to specify that only specific classes are loaded at runtime. |
829517d4 |
306 | |
82b01c38 |
307 | With no arguments, this method uses L<Module::Find> to find all classes under |
308 | the schema's namespace. Otherwise, this method loads the classes you specify |
309 | (using L<use>), and registers them (using L</"register_class">). |
076652e8 |
310 | |
2053ab2a |
311 | It is possible to comment out classes with a leading C<#>, but note that perl |
312 | will think it's a mistake (trying to use a comment in a qw list), so you'll |
313 | need to add C<no warnings 'qw';> before your load_classes call. |
5ce32fc1 |
314 | |
829517d4 |
315 | If any classes found do not appear to be Result class files, you will |
316 | get the following warning: |
317 | |
318 | Failed to load $comp_class. Can't find source_name method. Is |
319 | $comp_class really a full DBIC result class? Fix it, move it elsewhere, |
320 | or make your load_classes call more specific. |
321 | |
2053ab2a |
322 | Example: |
82b01c38 |
323 | |
324 | My::Schema->load_classes(); # loads My::Schema::CD, My::Schema::Artist, |
75d07914 |
325 | # etc. (anything under the My::Schema namespace) |
82b01c38 |
326 | |
327 | # loads My::Schema::CD, My::Schema::Artist, Other::Namespace::Producer but |
328 | # not Other::Namespace::LinerNotes nor My::Schema::Track |
329 | My::Schema->load_classes(qw/ CD Artist #Track /, { |
330 | Other::Namespace => [qw/ Producer #LinerNotes /], |
331 | }); |
332 | |
076652e8 |
333 | =cut |
334 | |
a02675cd |
335 | sub load_classes { |
5ce32fc1 |
336 | my ($class, @params) = @_; |
bab77431 |
337 | |
5ce32fc1 |
338 | my %comps_for; |
bab77431 |
339 | |
5ce32fc1 |
340 | if (@params) { |
341 | foreach my $param (@params) { |
342 | if (ref $param eq 'ARRAY') { |
343 | # filter out commented entries |
344 | my @modules = grep { $_ !~ /^#/ } @$param; |
bab77431 |
345 | |
5ce32fc1 |
346 | push (@{$comps_for{$class}}, @modules); |
347 | } |
348 | elsif (ref $param eq 'HASH') { |
349 | # more than one namespace possible |
350 | for my $comp ( keys %$param ) { |
351 | # filter out commented entries |
352 | my @modules = grep { $_ !~ /^#/ } @{$param->{$comp}}; |
353 | |
354 | push (@{$comps_for{$comp}}, @modules); |
355 | } |
356 | } |
357 | else { |
358 | # filter out commented entries |
359 | push (@{$comps_for{$class}}, $param) if $param !~ /^#/; |
360 | } |
361 | } |
362 | } else { |
bc0c9800 |
363 | my @comp = map { substr $_, length "${class}::" } |
f3405058 |
364 | $class->_findallmod; |
5ce32fc1 |
365 | $comps_for{$class} = \@comp; |
41a6f8c0 |
366 | } |
5ce32fc1 |
367 | |
e6efde04 |
368 | my @to_register; |
369 | { |
370 | no warnings qw/redefine/; |
371 | local *Class::C3::reinitialize = sub { }; |
372 | foreach my $prefix (keys %comps_for) { |
373 | foreach my $comp (@{$comps_for{$prefix}||[]}) { |
374 | my $comp_class = "${prefix}::${comp}"; |
c037c03a |
375 | $class->ensure_class_loaded($comp_class); |
bab77431 |
376 | |
89271e56 |
377 | my $snsub = $comp_class->can('source_name'); |
378 | if(! $snsub ) { |
341d5ede |
379 | 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 |
380 | next; |
381 | } |
382 | $comp = $snsub->($comp_class) || $comp; |
383 | |
93405cf0 |
384 | push(@to_register, [ $comp, $comp_class ]); |
bfb2bd4f |
385 | } |
5ce32fc1 |
386 | } |
a02675cd |
387 | } |
e6efde04 |
388 | Class::C3->reinitialize; |
389 | |
390 | foreach my $to (@to_register) { |
391 | $class->register_class(@$to); |
392 | # if $class->can('result_source_instance'); |
393 | } |
a02675cd |
394 | } |
395 | |
829517d4 |
396 | =head2 storage_type |
2374c5ff |
397 | |
398 | =over 4 |
399 | |
829517d4 |
400 | =item Arguments: $storage_type|{$storage_type, \%args} |
401 | |
402 | =item Return value: $storage_type|{$storage_type, \%args} |
403 | |
404 | =item Default value: DBIx::Class::Storage::DBI |
2374c5ff |
405 | |
406 | =back |
407 | |
829517d4 |
408 | Set the storage class that will be instantiated when L</connect> is called. |
409 | If the classname starts with C<::>, the prefix C<DBIx::Class::Storage> is |
95787afe |
410 | assumed by L</connect>. |
2374c5ff |
411 | |
829517d4 |
412 | You want to use this to set subclasses of L<DBIx::Class::Storage::DBI> |
95787afe |
413 | in cases where the appropriate subclass is not autodetected. |
85bd0538 |
414 | |
829517d4 |
415 | If your storage type requires instantiation arguments, those are |
416 | defined as a second argument in the form of a hashref and the entire |
417 | value needs to be wrapped into an arrayref or a hashref. We support |
418 | both types of refs here in order to play nice with your |
419 | Config::[class] or your choice. See |
420 | L<DBIx::Class::Storage::DBI::Replicated> for an example of this. |
0f4ec1d2 |
421 | |
829517d4 |
422 | =head2 exception_action |
f017c022 |
423 | |
829517d4 |
424 | =over 4 |
0f4ec1d2 |
425 | |
829517d4 |
426 | =item Arguments: $code_reference |
f017c022 |
427 | |
829517d4 |
428 | =item Return value: $code_reference |
85bd0538 |
429 | |
829517d4 |
430 | =item Default value: None |
2374c5ff |
431 | |
829517d4 |
432 | =back |
f017c022 |
433 | |
829517d4 |
434 | If C<exception_action> is set for this class/object, L</throw_exception> |
435 | will prefer to call this code reference with the exception as an argument, |
436 | rather than L<DBIx::Class::Exception/throw>. |
f017c022 |
437 | |
829517d4 |
438 | Your subroutine should probably just wrap the error in the exception |
439 | object/class of your choosing and rethrow. If, against all sage advice, |
440 | you'd like your C<exception_action> to suppress a particular exception |
441 | completely, simply have it return true. |
f017c022 |
442 | |
829517d4 |
443 | Example: |
f017c022 |
444 | |
829517d4 |
445 | package My::Schema; |
446 | use base qw/DBIx::Class::Schema/; |
447 | use My::ExceptionClass; |
448 | __PACKAGE__->exception_action(sub { My::ExceptionClass->throw(@_) }); |
449 | __PACKAGE__->load_classes; |
2374c5ff |
450 | |
829517d4 |
451 | # or: |
452 | my $schema_obj = My::Schema->connect( .... ); |
453 | $schema_obj->exception_action(sub { My::ExceptionClass->throw(@_) }); |
0f4ec1d2 |
454 | |
829517d4 |
455 | # suppress all exceptions, like a moron: |
456 | $schema_obj->exception_action(sub { 1 }); |
25fb14bd |
457 | |
829517d4 |
458 | =head2 stacktrace |
f017c022 |
459 | |
829517d4 |
460 | =over 4 |
2374c5ff |
461 | |
829517d4 |
462 | =item Arguments: boolean |
2374c5ff |
463 | |
829517d4 |
464 | =back |
2374c5ff |
465 | |
829517d4 |
466 | Whether L</throw_exception> should include stack trace information. |
467 | Defaults to false normally, but defaults to true if C<$ENV{DBIC_TRACE}> |
468 | is true. |
0f4ec1d2 |
469 | |
829517d4 |
470 | =head2 sqlt_deploy_hook |
0f4ec1d2 |
471 | |
829517d4 |
472 | =over |
0f4ec1d2 |
473 | |
829517d4 |
474 | =item Arguments: $sqlt_schema |
2374c5ff |
475 | |
829517d4 |
476 | =back |
2374c5ff |
477 | |
829517d4 |
478 | An optional sub which you can declare in your own Schema class that will get |
479 | passed the L<SQL::Translator::Schema> object when you deploy the schema via |
480 | L</create_ddl_dir> or L</deploy>. |
0f4ec1d2 |
481 | |
829517d4 |
482 | For an example of what you can do with this, see |
483 | L<DBIx::Class::Manual::Cookbook/Adding Indexes And Functions To Your SQL>. |
fdcd8145 |
484 | |
2d7d8459 |
485 | Note that sqlt_deploy_hook is called by L</deployment_statements>, which in turn |
486 | is called before L</deploy>. Therefore the hook can be used only to manipulate |
487 | the L<SQL::Translator::Schema> object before it is turned into SQL fed to the |
488 | database. If you want to execute post-deploy statements which can not be generated |
489 | by L<SQL::Translator>, the currently suggested method is to overload L</deploy> |
490 | and use L<dbh_do|DBIx::Class::Storage::DBI/dbh_do>. |
491 | |
829517d4 |
492 | =head1 METHODS |
2374c5ff |
493 | |
829517d4 |
494 | =head2 connect |
87c4e602 |
495 | |
27f01d1f |
496 | =over 4 |
497 | |
829517d4 |
498 | =item Arguments: @connectinfo |
429bd4f1 |
499 | |
d601dc88 |
500 | =item Return Value: $new_schema |
27f01d1f |
501 | |
502 | =back |
076652e8 |
503 | |
829517d4 |
504 | Creates and returns a new Schema object. The connection info set on it |
505 | is used to create a new instance of the storage backend and set it on |
506 | the Schema object. |
1c133e22 |
507 | |
829517d4 |
508 | See L<DBIx::Class::Storage::DBI/"connect_info"> for DBI-specific |
5d52945a |
509 | syntax on the C<@connectinfo> argument, or L<DBIx::Class::Storage> in |
829517d4 |
510 | general. |
1c133e22 |
511 | |
5d52945a |
512 | Note that C<connect_info> expects an arrayref of arguments, but |
faaba25f |
513 | C<connect> does not. C<connect> wraps its arguments in an arrayref |
5d52945a |
514 | before passing them to C<connect_info>. |
515 | |
4c7d99ca |
516 | =head3 Overloading |
517 | |
518 | C<connect> is a convenience method. It is equivalent to calling |
519 | $schema->clone->connection(@connectinfo). To write your own overloaded |
520 | version, overload L</connection> instead. |
521 | |
076652e8 |
522 | =cut |
523 | |
829517d4 |
524 | sub connect { shift->clone->connection(@_) } |
e678398e |
525 | |
829517d4 |
526 | =head2 resultset |
77254782 |
527 | |
27f01d1f |
528 | =over 4 |
529 | |
829517d4 |
530 | =item Arguments: $source_name |
82b01c38 |
531 | |
829517d4 |
532 | =item Return Value: $resultset |
27f01d1f |
533 | |
534 | =back |
13765dad |
535 | |
829517d4 |
536 | my $rs = $schema->resultset('DVD'); |
82b01c38 |
537 | |
829517d4 |
538 | Returns the L<DBIx::Class::ResultSet> object for the registered source |
539 | name. |
77254782 |
540 | |
541 | =cut |
542 | |
829517d4 |
543 | sub resultset { |
544 | my ($self, $moniker) = @_; |
73d47f9f |
545 | $self->throw_exception('resultset() expects a source name') |
546 | unless defined $moniker; |
829517d4 |
547 | return $self->source($moniker)->resultset; |
b7951443 |
548 | } |
549 | |
829517d4 |
550 | =head2 sources |
6b43ba5f |
551 | |
552 | =over 4 |
553 | |
829517d4 |
554 | =item Return Value: @source_names |
6b43ba5f |
555 | |
556 | =back |
557 | |
829517d4 |
558 | my @source_names = $schema->sources; |
6b43ba5f |
559 | |
829517d4 |
560 | Lists names of all the sources registered on this Schema object. |
6b43ba5f |
561 | |
829517d4 |
562 | =cut |
161fb223 |
563 | |
829517d4 |
564 | sub sources { return keys %{shift->source_registrations}; } |
106d5f3b |
565 | |
829517d4 |
566 | =head2 source |
87c4e602 |
567 | |
27f01d1f |
568 | =over 4 |
569 | |
829517d4 |
570 | =item Arguments: $source_name |
66d9ef6b |
571 | |
829517d4 |
572 | =item Return Value: $result_source |
27f01d1f |
573 | |
574 | =back |
82b01c38 |
575 | |
829517d4 |
576 | my $source = $schema->source('Book'); |
85f78622 |
577 | |
829517d4 |
578 | Returns the L<DBIx::Class::ResultSource> object for the registered |
579 | source name. |
66d9ef6b |
580 | |
581 | =cut |
582 | |
829517d4 |
583 | sub source { |
584 | my ($self, $moniker) = @_; |
585 | my $sreg = $self->source_registrations; |
586 | return $sreg->{$moniker} if exists $sreg->{$moniker}; |
587 | |
588 | # if we got here, they probably passed a full class name |
589 | my $mapped = $self->class_mappings->{$moniker}; |
590 | $self->throw_exception("Can't find source for ${moniker}") |
591 | unless $mapped && exists $sreg->{$mapped}; |
592 | return $sreg->{$mapped}; |
161fb223 |
593 | } |
594 | |
829517d4 |
595 | =head2 class |
87c4e602 |
596 | |
27f01d1f |
597 | =over 4 |
598 | |
829517d4 |
599 | =item Arguments: $source_name |
66d9ef6b |
600 | |
829517d4 |
601 | =item Return Value: $classname |
27f01d1f |
602 | |
603 | =back |
82b01c38 |
604 | |
829517d4 |
605 | my $class = $schema->class('CD'); |
606 | |
607 | Retrieves the Result class name for the given source name. |
66d9ef6b |
608 | |
609 | =cut |
610 | |
829517d4 |
611 | sub class { |
612 | my ($self, $moniker) = @_; |
613 | return $self->source($moniker)->result_class; |
614 | } |
08b515f1 |
615 | |
4012acd8 |
616 | =head2 txn_do |
08b515f1 |
617 | |
4012acd8 |
618 | =over 4 |
08b515f1 |
619 | |
4012acd8 |
620 | =item Arguments: C<$coderef>, @coderef_args? |
08b515f1 |
621 | |
4012acd8 |
622 | =item Return Value: The return value of $coderef |
08b515f1 |
623 | |
4012acd8 |
624 | =back |
08b515f1 |
625 | |
4012acd8 |
626 | Executes C<$coderef> with (optional) arguments C<@coderef_args> atomically, |
627 | returning its result (if any). Equivalent to calling $schema->storage->txn_do. |
628 | See L<DBIx::Class::Storage/"txn_do"> for more information. |
08b515f1 |
629 | |
4012acd8 |
630 | This interface is preferred over using the individual methods L</txn_begin>, |
631 | L</txn_commit>, and L</txn_rollback> below. |
08b515f1 |
632 | |
f9f06ae0 |
633 | WARNING: If you are connected with C<< AutoCommit => 0 >> the transaction is |
281719d2 |
634 | considered nested, and you will still need to call L</txn_commit> to write your |
f9f06ae0 |
635 | changes when appropriate. You will also want to connect with C<< auto_savepoint => |
636 | 1 >> to get partial rollback to work, if the storage driver for your database |
281719d2 |
637 | supports it. |
638 | |
f9f06ae0 |
639 | Connecting with C<< AutoCommit => 1 >> is recommended. |
281719d2 |
640 | |
4012acd8 |
641 | =cut |
08b515f1 |
642 | |
4012acd8 |
643 | sub txn_do { |
644 | my $self = shift; |
08b515f1 |
645 | |
4012acd8 |
646 | $self->storage or $self->throw_exception |
647 | ('txn_do called on $schema without storage'); |
08b515f1 |
648 | |
4012acd8 |
649 | $self->storage->txn_do(@_); |
650 | } |
66d9ef6b |
651 | |
6936e902 |
652 | =head2 txn_scope_guard |
75c8a7ab |
653 | |
89028f42 |
654 | Runs C<txn_scope_guard> on the schema's storage. See |
655 | L<DBIx::Class::Storage/txn_scope_guard>. |
75c8a7ab |
656 | |
b85be4c1 |
657 | =cut |
658 | |
1bc193ac |
659 | sub txn_scope_guard { |
660 | my $self = shift; |
661 | |
662 | $self->storage or $self->throw_exception |
663 | ('txn_scope_guard called on $schema without storage'); |
664 | |
665 | $self->storage->txn_scope_guard(@_); |
666 | } |
667 | |
4012acd8 |
668 | =head2 txn_begin |
a62cf8d4 |
669 | |
4012acd8 |
670 | Begins a transaction (does nothing if AutoCommit is off). Equivalent to |
671 | calling $schema->storage->txn_begin. See |
672 | L<DBIx::Class::Storage::DBI/"txn_begin"> for more information. |
27f01d1f |
673 | |
4012acd8 |
674 | =cut |
82b01c38 |
675 | |
4012acd8 |
676 | sub txn_begin { |
677 | my $self = shift; |
27f01d1f |
678 | |
4012acd8 |
679 | $self->storage or $self->throw_exception |
680 | ('txn_begin called on $schema without storage'); |
a62cf8d4 |
681 | |
4012acd8 |
682 | $self->storage->txn_begin; |
683 | } |
a62cf8d4 |
684 | |
4012acd8 |
685 | =head2 txn_commit |
a62cf8d4 |
686 | |
4012acd8 |
687 | Commits the current transaction. Equivalent to calling |
688 | $schema->storage->txn_commit. See L<DBIx::Class::Storage::DBI/"txn_commit"> |
689 | for more information. |
a62cf8d4 |
690 | |
4012acd8 |
691 | =cut |
a62cf8d4 |
692 | |
4012acd8 |
693 | sub txn_commit { |
694 | my $self = shift; |
a62cf8d4 |
695 | |
4012acd8 |
696 | $self->storage or $self->throw_exception |
697 | ('txn_commit called on $schema without storage'); |
a62cf8d4 |
698 | |
4012acd8 |
699 | $self->storage->txn_commit; |
700 | } |
70634260 |
701 | |
4012acd8 |
702 | =head2 txn_rollback |
a62cf8d4 |
703 | |
4012acd8 |
704 | Rolls back the current transaction. Equivalent to calling |
705 | $schema->storage->txn_rollback. See |
706 | L<DBIx::Class::Storage::DBI/"txn_rollback"> for more information. |
a62cf8d4 |
707 | |
708 | =cut |
709 | |
4012acd8 |
710 | sub txn_rollback { |
711 | my $self = shift; |
a62cf8d4 |
712 | |
19630353 |
713 | $self->storage or $self->throw_exception |
4012acd8 |
714 | ('txn_rollback called on $schema without storage'); |
a62cf8d4 |
715 | |
4012acd8 |
716 | $self->storage->txn_rollback; |
a62cf8d4 |
717 | } |
718 | |
829517d4 |
719 | =head2 storage |
66d9ef6b |
720 | |
829517d4 |
721 | my $storage = $schema->storage; |
04786a4c |
722 | |
829517d4 |
723 | Returns the L<DBIx::Class::Storage> object for this Schema. Grab this |
724 | if you want to turn on SQL statement debugging at runtime, or set the |
725 | quote character. For the default storage, the documentation can be |
726 | found in L<DBIx::Class::Storage::DBI>. |
66d9ef6b |
727 | |
87c4e602 |
728 | =head2 populate |
729 | |
27f01d1f |
730 | =over 4 |
731 | |
16c5f7d3 |
732 | =item Arguments: $source_name, \@data; |
27f01d1f |
733 | |
829517d4 |
734 | =item Return value: \@$objects | nothing |
735 | |
27f01d1f |
736 | =back |
a37a4697 |
737 | |
16c5f7d3 |
738 | Pass this method a resultsource name, and an arrayref of |
739 | arrayrefs. The arrayrefs should contain a list of column names, |
740 | followed by one or many sets of matching data for the given columns. |
741 | |
744076d8 |
742 | In void context, C<insert_bulk> in L<DBIx::Class::Storage::DBI> is used |
743 | to insert the data, as this is a fast method. However, insert_bulk currently |
744 | assumes that your datasets all contain the same type of values, using scalar |
745 | references in a column in one row, and not in another will probably not work. |
746 | |
747 | Otherwise, each set of data is inserted into the database using |
16c5f7d3 |
748 | L<DBIx::Class::ResultSet/create>, and a arrayref of the resulting row |
749 | objects is returned. |
82b01c38 |
750 | |
751 | i.e., |
a37a4697 |
752 | |
24d67825 |
753 | $schema->populate('Artist', [ |
754 | [ qw/artistid name/ ], |
755 | [ 1, 'Popular Band' ], |
756 | [ 2, 'Indie Band' ], |
a62cf8d4 |
757 | ... |
758 | ]); |
d4daee7b |
759 | |
5a93e138 |
760 | Since wantarray context is basically the same as looping over $rs->create(...) |
761 | you won't see any performance benefits and in this case the method is more for |
762 | convenience. Void context sends the column information directly to storage |
763 | using <DBI>s bulk insert method. So the performance will be much better for |
764 | storages that support this method. |
765 | |
766 | Because of this difference in the way void context inserts rows into your |
767 | database you need to note how this will effect any loaded components that |
768 | override or augment insert. For example if you are using a component such |
769 | as L<DBIx::Class::UUIDColumns> to populate your primary keys you MUST use |
770 | wantarray context if you want the PKs automatically created. |
a37a4697 |
771 | |
772 | =cut |
773 | |
774 | sub populate { |
775 | my ($self, $name, $data) = @_; |
c4e67d31 |
776 | if(my $rs = $self->resultset($name)) { |
777 | if(defined wantarray) { |
778 | return $rs->populate($data); |
779 | } else { |
780 | $rs->populate($data); |
54e0bd06 |
781 | } |
c4e67d31 |
782 | } else { |
783 | $self->throw_exception("$name is not a resultset"); |
8b93a938 |
784 | } |
a37a4697 |
785 | } |
786 | |
829517d4 |
787 | =head2 connection |
788 | |
789 | =over 4 |
790 | |
791 | =item Arguments: @args |
792 | |
793 | =item Return Value: $new_schema |
794 | |
795 | =back |
796 | |
797 | Similar to L</connect> except sets the storage object and connection |
798 | data in-place on the Schema class. You should probably be calling |
799 | L</connect> to get a proper Schema object instead. |
800 | |
4c7d99ca |
801 | =head3 Overloading |
802 | |
803 | Overload C<connection> to change the behaviour of C<connect>. |
829517d4 |
804 | |
805 | =cut |
806 | |
807 | sub connection { |
808 | my ($self, @info) = @_; |
809 | return $self if !@info && $self->storage; |
d4daee7b |
810 | |
829517d4 |
811 | my ($storage_class, $args) = ref $self->storage_type ? |
812 | ($self->_normalize_storage_type($self->storage_type),{}) : ($self->storage_type, {}); |
d4daee7b |
813 | |
829517d4 |
814 | $storage_class = 'DBIx::Class::Storage'.$storage_class |
815 | if $storage_class =~ m/^::/; |
82202206 |
816 | eval { $self->ensure_class_loaded ($storage_class) }; |
829517d4 |
817 | $self->throw_exception( |
818 | "No arguments to load_classes and couldn't load ${storage_class} ($@)" |
819 | ) if $@; |
820 | my $storage = $storage_class->new($self=>$args); |
821 | $storage->connect_info(\@info); |
822 | $self->storage($storage); |
823 | return $self; |
824 | } |
825 | |
826 | sub _normalize_storage_type { |
827 | my ($self, $storage_type) = @_; |
828 | if(ref $storage_type eq 'ARRAY') { |
829 | return @$storage_type; |
830 | } elsif(ref $storage_type eq 'HASH') { |
831 | return %$storage_type; |
832 | } else { |
833 | $self->throw_exception('Unsupported REFTYPE given: '. ref $storage_type); |
834 | } |
835 | } |
836 | |
837 | =head2 compose_namespace |
82cc0386 |
838 | |
839 | =over 4 |
840 | |
829517d4 |
841 | =item Arguments: $target_namespace, $additional_base_class? |
842 | |
843 | =item Retur Value: $new_schema |
844 | |
845 | =back |
846 | |
847 | For each L<DBIx::Class::ResultSource> in the schema, this method creates a |
848 | class in the target namespace (e.g. $target_namespace::CD, |
849 | $target_namespace::Artist) that inherits from the corresponding classes |
850 | attached to the current schema. |
851 | |
852 | It also attaches a corresponding L<DBIx::Class::ResultSource> object to the |
853 | new $schema object. If C<$additional_base_class> is given, the new composed |
854 | classes will inherit from first the corresponding classe from the current |
855 | schema then the base class. |
856 | |
857 | For example, for a schema with My::Schema::CD and My::Schema::Artist classes, |
858 | |
859 | $schema->compose_namespace('My::DB', 'Base::Class'); |
860 | print join (', ', @My::DB::CD::ISA) . "\n"; |
861 | print join (', ', @My::DB::Artist::ISA) ."\n"; |
862 | |
863 | will produce the output |
864 | |
865 | My::Schema::CD, Base::Class |
866 | My::Schema::Artist, Base::Class |
867 | |
868 | =cut |
869 | |
870 | # this might be oversimplified |
871 | # sub compose_namespace { |
872 | # my ($self, $target, $base) = @_; |
873 | |
874 | # my $schema = $self->clone; |
875 | # foreach my $moniker ($schema->sources) { |
876 | # my $source = $schema->source($moniker); |
877 | # my $target_class = "${target}::${moniker}"; |
878 | # $self->inject_base( |
879 | # $target_class => $source->result_class, ($base ? $base : ()) |
880 | # ); |
881 | # $source->result_class($target_class); |
882 | # $target_class->result_source_instance($source) |
883 | # if $target_class->can('result_source_instance'); |
884 | # $schema->register_source($moniker, $source); |
885 | # } |
886 | # return $schema; |
887 | # } |
888 | |
889 | sub compose_namespace { |
890 | my ($self, $target, $base) = @_; |
891 | my $schema = $self->clone; |
892 | { |
893 | no warnings qw/redefine/; |
894 | # local *Class::C3::reinitialize = sub { }; |
895 | foreach my $moniker ($schema->sources) { |
896 | my $source = $schema->source($moniker); |
897 | my $target_class = "${target}::${moniker}"; |
898 | $self->inject_base( |
899 | $target_class => $source->result_class, ($base ? $base : ()) |
900 | ); |
901 | $source->result_class($target_class); |
902 | $target_class->result_source_instance($source) |
903 | if $target_class->can('result_source_instance'); |
904 | $schema->register_source($moniker, $source); |
905 | } |
906 | } |
907 | # Class::C3->reinitialize(); |
908 | { |
909 | no strict 'refs'; |
910 | no warnings 'redefine'; |
911 | foreach my $meth (qw/class source resultset/) { |
8637bb24 |
912 | *{"${target}::${meth}"} = Sub::Name::subname "${target}::${meth}" => |
829517d4 |
913 | sub { shift->schema->$meth(@_) }; |
914 | } |
915 | } |
916 | return $schema; |
917 | } |
918 | |
919 | sub setup_connection_class { |
920 | my ($class, $target, @info) = @_; |
921 | $class->inject_base($target => 'DBIx::Class::DB'); |
922 | #$target->load_components('DB'); |
923 | $target->connection(@info); |
924 | } |
925 | |
926 | =head2 svp_begin |
927 | |
928 | Creates a new savepoint (does nothing outside a transaction). |
929 | Equivalent to calling $schema->storage->svp_begin. See |
930 | L<DBIx::Class::Storage::DBI/"svp_begin"> for more information. |
931 | |
932 | =cut |
933 | |
934 | sub svp_begin { |
935 | my ($self, $name) = @_; |
936 | |
937 | $self->storage or $self->throw_exception |
938 | ('svp_begin called on $schema without storage'); |
939 | |
940 | $self->storage->svp_begin($name); |
941 | } |
942 | |
943 | =head2 svp_release |
944 | |
945 | Releases a savepoint (does nothing outside a transaction). |
946 | Equivalent to calling $schema->storage->svp_release. See |
947 | L<DBIx::Class::Storage::DBI/"svp_release"> for more information. |
948 | |
949 | =cut |
950 | |
951 | sub svp_release { |
952 | my ($self, $name) = @_; |
953 | |
954 | $self->storage or $self->throw_exception |
955 | ('svp_release called on $schema without storage'); |
82cc0386 |
956 | |
829517d4 |
957 | $self->storage->svp_release($name); |
958 | } |
82cc0386 |
959 | |
829517d4 |
960 | =head2 svp_rollback |
db5dc233 |
961 | |
829517d4 |
962 | Rollback to a savepoint (does nothing outside a transaction). |
963 | Equivalent to calling $schema->storage->svp_rollback. See |
964 | L<DBIx::Class::Storage::DBI/"svp_rollback"> for more information. |
82cc0386 |
965 | |
829517d4 |
966 | =cut |
82cc0386 |
967 | |
829517d4 |
968 | sub svp_rollback { |
969 | my ($self, $name) = @_; |
82cc0386 |
970 | |
829517d4 |
971 | $self->storage or $self->throw_exception |
972 | ('svp_rollback called on $schema without storage'); |
82cc0386 |
973 | |
829517d4 |
974 | $self->storage->svp_rollback($name); |
975 | } |
db5dc233 |
976 | |
829517d4 |
977 | =head2 clone |
613397e7 |
978 | |
84c5863b |
979 | =over 4 |
613397e7 |
980 | |
829517d4 |
981 | =item Return Value: $new_schema |
613397e7 |
982 | |
983 | =back |
984 | |
829517d4 |
985 | Clones the schema and its associated result_source objects and returns the |
986 | copy. |
987 | |
988 | =cut |
989 | |
990 | sub clone { |
991 | my ($self) = @_; |
992 | my $clone = { (ref $self ? %$self : ()) }; |
993 | bless $clone, (ref $self || $self); |
994 | |
995 | $clone->class_mappings({ %{$clone->class_mappings} }); |
996 | $clone->source_registrations({ %{$clone->source_registrations} }); |
997 | foreach my $moniker ($self->sources) { |
998 | my $source = $self->source($moniker); |
999 | my $new = $source->new($source); |
1000 | # we use extra here as we want to leave the class_mappings as they are |
1001 | # but overwrite the source_registrations entry with the new source |
1002 | $clone->register_extra_source($moniker => $new); |
1003 | } |
1004 | $clone->storage->set_schema($clone) if $clone->storage; |
1005 | return $clone; |
1006 | } |
613397e7 |
1007 | |
5160b401 |
1008 | =head2 throw_exception |
701da8c4 |
1009 | |
75d07914 |
1010 | =over 4 |
82b01c38 |
1011 | |
ebc77b53 |
1012 | =item Arguments: $message |
82b01c38 |
1013 | |
1014 | =back |
1015 | |
1016 | Throws an exception. Defaults to using L<Carp::Clan> to report errors from |
db5dc233 |
1017 | user's perspective. See L</exception_action> for details on overriding |
4b946902 |
1018 | this method's behavior. If L</stacktrace> is turned on, C<throw_exception>'s |
1019 | default behavior will provide a detailed stack trace. |
701da8c4 |
1020 | |
1021 | =cut |
1022 | |
1023 | sub throw_exception { |
82cc0386 |
1024 | my $self = shift; |
4981dc70 |
1025 | |
1026 | DBIx::Class::Exception->throw($_[0], $self->stacktrace) |
1027 | if !$self->exception_action || !$self->exception_action->(@_); |
701da8c4 |
1028 | } |
1029 | |
dfccde48 |
1030 | =head2 deploy |
1c339d71 |
1031 | |
82b01c38 |
1032 | =over 4 |
1033 | |
10976519 |
1034 | =item Arguments: \%sqlt_args, $dir |
82b01c38 |
1035 | |
1036 | =back |
1037 | |
1038 | Attempts to deploy the schema to the current storage using L<SQL::Translator>. |
ec6704d4 |
1039 | |
10976519 |
1040 | See L<SQL::Translator/METHODS> for a list of values for C<\%sqlt_args>. |
1041 | The most common value for this would be C<< { add_drop_table => 1 } >> |
1042 | to have the SQL produced include a C<DROP TABLE> statement for each table |
1043 | created. For quoting purposes supply C<quote_table_names> and |
3e82fc27 |
1044 | C<quote_field_names>. |
51bace1c |
1045 | |
499adf63 |
1046 | Additionally, the DBIx::Class parser accepts a C<sources> parameter as a hash |
1047 | ref or an array ref, containing a list of source to deploy. If present, then |
0e2c6809 |
1048 | only the sources listed will get deployed. Furthermore, you can use the |
1049 | C<add_fk_index> parser parameter to prevent the parser from creating an index for each |
1050 | FK. |
499adf63 |
1051 | |
1c339d71 |
1052 | =cut |
1053 | |
1054 | sub deploy { |
6e73ac25 |
1055 | my ($self, $sqltargs, $dir) = @_; |
1c339d71 |
1056 | $self->throw_exception("Can't deploy without storage") unless $self->storage; |
6e73ac25 |
1057 | $self->storage->deploy($self, undef, $sqltargs, $dir); |
1c339d71 |
1058 | } |
1059 | |
0e0ce6c1 |
1060 | =head2 deployment_statements |
1061 | |
1062 | =over 4 |
1063 | |
10976519 |
1064 | =item Arguments: See L<DBIx::Class::Storage::DBI/deployment_statements> |
0e0ce6c1 |
1065 | |
829517d4 |
1066 | =item Return value: $listofstatements |
1067 | |
0e0ce6c1 |
1068 | =back |
1069 | |
10976519 |
1070 | A convenient shortcut to |
1071 | C<< $self->storage->deployment_statements($self, @args) >>. |
1072 | Returns the SQL statements used by L</deploy> and |
1073 | L<DBIx::Class::Schema::Storage/deploy>. |
0e0ce6c1 |
1074 | |
1075 | =cut |
1076 | |
1077 | sub deployment_statements { |
7ad93f5a |
1078 | my $self = shift; |
0e0ce6c1 |
1079 | |
1080 | $self->throw_exception("Can't generate deployment statements without a storage") |
1081 | if not $self->storage; |
1082 | |
7ad93f5a |
1083 | $self->storage->deployment_statements($self, @_); |
0e0ce6c1 |
1084 | } |
1085 | |
6dfbe2f8 |
1086 | =head2 create_ddl_dir |
c0f61310 |
1087 | |
1088 | =over 4 |
1089 | |
10976519 |
1090 | =item Arguments: See L<DBIx::Class::Storage::DBI/create_ddl_dir> |
c0f61310 |
1091 | |
1092 | =back |
1093 | |
10976519 |
1094 | A convenient shortcut to |
1095 | C<< $self->storage->create_ddl_dir($self, @args) >>. |
c9d2e0a2 |
1096 | |
10976519 |
1097 | Creates an SQL file based on the Schema, for each of the specified |
1098 | database types, in the given directory. |
c9d2e0a2 |
1099 | |
c0f61310 |
1100 | =cut |
1101 | |
6e73ac25 |
1102 | sub create_ddl_dir { |
e673f011 |
1103 | my $self = shift; |
1104 | |
1105 | $self->throw_exception("Can't create_ddl_dir without storage") unless $self->storage; |
1106 | $self->storage->create_ddl_dir($self, @_); |
1107 | } |
1108 | |
e63a82f7 |
1109 | =head2 ddl_filename |
9b83fccd |
1110 | |
c9d2e0a2 |
1111 | =over 4 |
1112 | |
99a74c4a |
1113 | =item Arguments: $database-type, $version, $directory, $preversion |
c9d2e0a2 |
1114 | |
829517d4 |
1115 | =item Return value: $normalised_filename |
1116 | |
c9d2e0a2 |
1117 | =back |
1118 | |
99a74c4a |
1119 | my $filename = $table->ddl_filename($type, $version, $dir, $preversion) |
c9d2e0a2 |
1120 | |
1121 | This method is called by C<create_ddl_dir> to compose a file name out of |
1122 | the supplied directory, database type and version number. The default file |
1123 | name format is: C<$dir$schema-$version-$type.sql>. |
9b83fccd |
1124 | |
c9d2e0a2 |
1125 | You may override this method in your schema if you wish to use a different |
1126 | format. |
9b83fccd |
1127 | |
1acfef8e |
1128 | WARNING |
1129 | |
1130 | Prior to DBIx::Class version 0.08100 this method had a different signature: |
1131 | |
1132 | my $filename = $table->ddl_filename($type, $dir, $version, $preversion) |
1133 | |
1134 | In recent versions variables $dir and $version were reversed in order to |
1135 | bring the signature in line with other Schema/Storage methods. If you |
1136 | really need to maintain backward compatibility, you can do the following |
1137 | in any overriding methods: |
1138 | |
1139 | ($dir, $version) = ($version, $dir) if ($DBIx::Class::VERSION < 0.08100); |
1140 | |
9b83fccd |
1141 | =cut |
1142 | |
6e73ac25 |
1143 | sub ddl_filename { |
99a74c4a |
1144 | my ($self, $type, $version, $dir, $preversion) = @_; |
e673f011 |
1145 | |
99a74c4a |
1146 | my $filename = ref($self); |
1147 | $filename =~ s/::/-/g; |
1148 | $filename = File::Spec->catfile($dir, "$filename-$version-$type.sql"); |
1149 | $filename =~ s/$version/$preversion-$version/ if($preversion); |
d4daee7b |
1150 | |
99a74c4a |
1151 | return $filename; |
e673f011 |
1152 | } |
1153 | |
4146e3da |
1154 | =head2 thaw |
1155 | |
829517d4 |
1156 | Provided as the recommended way of thawing schema objects. You can call |
4146e3da |
1157 | C<Storable::thaw> directly if you wish, but the thawed objects will not have a |
1158 | reference to any schema, so are rather useless |
1159 | |
1160 | =cut |
1161 | |
1162 | sub thaw { |
1163 | my ($self, $obj) = @_; |
1164 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1165 | return Storable::thaw($obj); |
1166 | } |
1167 | |
1168 | =head2 freeze |
1169 | |
1170 | This doesn't actualy do anything more than call L<Storable/freeze>, it is just |
1171 | provided here for symetry. |
1172 | |
d2f3e87b |
1173 | =cut |
1174 | |
4146e3da |
1175 | sub freeze { |
1176 | return Storable::freeze($_[1]); |
1177 | } |
1178 | |
1179 | =head2 dclone |
1180 | |
1477a478 |
1181 | =over 4 |
1182 | |
1183 | =item Arguments: $object |
1184 | |
1185 | =item Return Value: dcloned $object |
1186 | |
1187 | =back |
1188 | |
9e9ecfda |
1189 | Recommended way of dcloning L<DBIx::Class::Row> and L<DBIx::Class::ResultSet> |
1190 | objects so their references to the schema object |
1191 | (which itself is B<not> cloned) are properly maintained. |
4146e3da |
1192 | |
1193 | =cut |
1194 | |
1195 | sub dclone { |
1196 | my ($self, $obj) = @_; |
1197 | local $DBIx::Class::ResultSourceHandle::thaw_schema = $self; |
1198 | return Storable::dclone($obj); |
1199 | } |
1200 | |
93e4d41a |
1201 | =head2 schema_version |
1202 | |
829517d4 |
1203 | Returns the current schema class' $VERSION in a normalised way. |
93e4d41a |
1204 | |
1205 | =cut |
1206 | |
1207 | sub schema_version { |
1208 | my ($self) = @_; |
1209 | my $class = ref($self)||$self; |
1210 | |
1211 | # does -not- use $schema->VERSION |
1212 | # since that varies in results depending on if version.pm is installed, and if |
1213 | # so the perl or XS versions. If you want this to change, bug the version.pm |
1214 | # author to make vpp and vxs behave the same. |
1215 | |
1216 | my $version; |
1217 | { |
1218 | no strict 'refs'; |
1219 | $version = ${"${class}::VERSION"}; |
1220 | } |
1221 | return $version; |
1222 | } |
1223 | |
829517d4 |
1224 | |
1225 | =head2 register_class |
1226 | |
1227 | =over 4 |
1228 | |
1229 | =item Arguments: $moniker, $component_class |
1230 | |
1231 | =back |
1232 | |
1233 | 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. |
1234 | |
1235 | You will only need this method if you have your Result classes in |
1236 | files which are not named after the packages (or all in the same |
1237 | file). You may also need it to register classes at runtime. |
1238 | |
1239 | Registers a class which isa DBIx::Class::ResultSourceProxy. Equivalent to |
1240 | calling: |
1241 | |
1242 | $schema->register_source($moniker, $component_class->result_source_instance); |
1243 | |
1244 | =cut |
1245 | |
1246 | sub register_class { |
1247 | my ($self, $moniker, $to_register) = @_; |
1e36ef62 |
1248 | $self->register_source($moniker => $to_register->result_source_instance); |
829517d4 |
1249 | } |
1250 | |
1251 | =head2 register_source |
1252 | |
1253 | =over 4 |
1254 | |
1255 | =item Arguments: $moniker, $result_source |
1256 | |
1257 | =back |
1258 | |
1259 | This method is called by L</register_class>. |
1260 | |
1261 | Registers the L<DBIx::Class::ResultSource> in the schema with the given |
1262 | moniker. |
1263 | |
1264 | =cut |
1265 | |
1266 | sub register_source { |
1267 | my $self = shift; |
1268 | |
1269 | $self->_register_source(@_); |
1270 | } |
1271 | |
98cabed3 |
1272 | =head2 unregister_source |
1273 | |
1274 | =over 4 |
1275 | |
1276 | =item Arguments: $moniker |
1277 | |
1278 | =back |
1279 | |
1280 | Removes the L<DBIx::Class::ResultSource> from the schema for the given moniker. |
1281 | |
1282 | =cut |
1283 | |
1284 | sub unregister_source { |
1285 | my $self = shift; |
1286 | |
1287 | $self->_unregister_source(@_); |
1288 | } |
1289 | |
829517d4 |
1290 | =head2 register_extra_source |
1291 | |
1292 | =over 4 |
1293 | |
1294 | =item Arguments: $moniker, $result_source |
1295 | |
1296 | =back |
1297 | |
1298 | As L</register_source> but should be used if the result class already |
1299 | has a source and you want to register an extra one. |
1300 | |
1301 | =cut |
1302 | |
1303 | sub register_extra_source { |
1304 | my $self = shift; |
1305 | |
1306 | $self->_register_source(@_, { extra => 1 }); |
1307 | } |
1308 | |
1309 | sub _register_source { |
1310 | my ($self, $moniker, $source, $params) = @_; |
1311 | |
6d4f9d94 |
1312 | my $orig_source = $source; |
2461ae19 |
1313 | |
0e6c5d58 |
1314 | $source = $source->new({ %$source, source_name => $moniker }); |
2461ae19 |
1315 | $source->schema($self); |
551e711a |
1316 | Scalar::Util::weaken($source->{schema}) if ref($self); |
2461ae19 |
1317 | |
1318 | my $rs_class = $source->result_class; |
829517d4 |
1319 | |
1320 | my %reg = %{$self->source_registrations}; |
1321 | $reg{$moniker} = $source; |
1322 | $self->source_registrations(\%reg); |
1323 | |
829517d4 |
1324 | return if ($params->{extra}); |
5dfe40b8 |
1325 | return unless defined($rs_class) && $rs_class->can('result_source_instance'); |
829517d4 |
1326 | |
2461ae19 |
1327 | my %map = %{$self->class_mappings}; |
f18d2d04 |
1328 | if ( |
1329 | exists $map{$rs_class} |
1330 | and |
1331 | $map{$rs_class} ne $moniker |
1332 | and |
1333 | $rs_class->result_source_instance ne $orig_source |
1334 | ) { |
2461ae19 |
1335 | carp "$rs_class already has a source, use register_extra_source for additional sources"; |
829517d4 |
1336 | } |
2461ae19 |
1337 | $map{$rs_class} = $moniker; |
1338 | $self->class_mappings(\%map); |
829517d4 |
1339 | } |
1340 | |
1341 | sub _unregister_source { |
1342 | my ($self, $moniker) = @_; |
1343 | my %reg = %{$self->source_registrations}; |
1344 | |
1345 | my $source = delete $reg{$moniker}; |
1346 | $self->source_registrations(\%reg); |
1347 | if ($source->result_class) { |
1348 | my %map = %{$self->class_mappings}; |
1349 | delete $map{$source->result_class}; |
1350 | $self->class_mappings(\%map); |
1351 | } |
1352 | } |
1353 | |
1354 | |
1355 | =head2 compose_connection (DEPRECATED) |
1356 | |
1357 | =over 4 |
1358 | |
1359 | =item Arguments: $target_namespace, @db_info |
1360 | |
1361 | =item Return Value: $new_schema |
1362 | |
1363 | =back |
1364 | |
1365 | DEPRECATED. You probably wanted compose_namespace. |
1366 | |
1367 | Actually, you probably just wanted to call connect. |
1368 | |
1369 | =begin hidden |
1370 | |
1371 | (hidden due to deprecation) |
1372 | |
1373 | Calls L<DBIx::Class::Schema/"compose_namespace"> to the target namespace, |
1374 | calls L<DBIx::Class::Schema/connection> with @db_info on the new schema, |
1375 | then injects the L<DBix::Class::ResultSetProxy> component and a |
1376 | resultset_instance classdata entry on all the new classes, in order to support |
1377 | $target_namespaces::$class->search(...) method calls. |
1378 | |
1379 | This is primarily useful when you have a specific need for class method access |
1380 | to a connection. In normal usage it is preferred to call |
1381 | L<DBIx::Class::Schema/connect> and use the resulting schema object to operate |
1382 | on L<DBIx::Class::ResultSet> objects with L<DBIx::Class::Schema/resultset> for |
1383 | more information. |
1384 | |
1385 | =end hidden |
1386 | |
1387 | =cut |
1388 | |
1389 | { |
1390 | my $warn; |
1391 | |
1392 | sub compose_connection { |
1393 | my ($self, $target, @info) = @_; |
1394 | |
341d5ede |
1395 | carp "compose_connection deprecated as of 0.08000" |
829517d4 |
1396 | unless ($INC{"DBIx/Class/CDBICompat.pm"} || $warn++); |
1397 | |
1398 | my $base = 'DBIx::Class::ResultSetProxy'; |
1399 | eval "require ${base};"; |
1400 | $self->throw_exception |
1401 | ("No arguments to load_classes and couldn't load ${base} ($@)") |
1402 | if $@; |
d4daee7b |
1403 | |
829517d4 |
1404 | if ($self eq $target) { |
1405 | # Pathological case, largely caused by the docs on early C::M::DBIC::Plain |
1406 | foreach my $moniker ($self->sources) { |
1407 | my $source = $self->source($moniker); |
1408 | my $class = $source->result_class; |
1409 | $self->inject_base($class, $base); |
1410 | $class->mk_classdata(resultset_instance => $source->resultset); |
1411 | $class->mk_classdata(class_resolver => $self); |
1412 | } |
1413 | $self->connection(@info); |
1414 | return $self; |
1415 | } |
d4daee7b |
1416 | |
829517d4 |
1417 | my $schema = $self->compose_namespace($target, $base); |
1418 | { |
1419 | no strict 'refs'; |
1420 | my $name = join '::', $target, 'schema'; |
1421 | *$name = Sub::Name::subname $name, sub { $schema }; |
1422 | } |
d4daee7b |
1423 | |
829517d4 |
1424 | $schema->connection(@info); |
1425 | foreach my $moniker ($schema->sources) { |
1426 | my $source = $schema->source($moniker); |
1427 | my $class = $source->result_class; |
1428 | #warn "$moniker $class $source ".$source->storage; |
1429 | $class->mk_classdata(result_source_instance => $source); |
1430 | $class->mk_classdata(resultset_instance => $source->resultset); |
1431 | $class->mk_classdata(class_resolver => $schema); |
1432 | } |
1433 | return $schema; |
1434 | } |
1435 | } |
1436 | |
a02675cd |
1437 | 1; |
c2da098a |
1438 | |
c2da098a |
1439 | =head1 AUTHORS |
1440 | |
daec44b8 |
1441 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
c2da098a |
1442 | |
1443 | =head1 LICENSE |
1444 | |
1445 | You may distribute this code under the same terms as Perl itself. |
1446 | |
1447 | =cut |