Commit | Line | Data |
996be9ee |
1 | package DBIx::Class::Schema::Loader::RelBuilder; |
2 | |
3 | use strict; |
4 | use warnings; |
1ad8e8c3 |
5 | use base 'Class::Accessor::Grouped'; |
942bd5e0 |
6 | use mro 'c3'; |
fa994d3c |
7 | use Carp::Clan qw/^DBIx::Class/; |
1ad8e8c3 |
8 | use Scalar::Util 'weaken'; |
50b95db6 |
9 | use DBIx::Class::Schema::Loader::Utils qw/split_name slurp_file array_eq/; |
1ad8e8c3 |
10 | use Try::Tiny; |
5975bbe6 |
11 | use List::MoreUtils qw/apply uniq any/; |
1ad8e8c3 |
12 | use namespace::clean; |
c4a69b87 |
13 | use Lingua::EN::Inflect::Phrase (); |
14 | use Lingua::EN::Tagger (); |
5975bbe6 |
15 | use String::ToIdentifier::EN (); |
16 | use String::ToIdentifier::EN::Unicode (); |
c4a69b87 |
17 | use Class::Unload (); |
18 | use Class::Inspector (); |
996be9ee |
19 | |
eeeab540 |
20 | our $VERSION = '0.07012'; |
32f784fc |
21 | |
6e4b7bb1 |
22 | # Glossary: |
23 | # |
24 | # remote_relname -- name of relationship from the local table referring to the remote table |
25 | # local_relname -- name of relationship from the remote table referring to the local table |
26 | # remote_method -- relationship type from remote table to local table, usually has_many |
27 | |
996be9ee |
28 | =head1 NAME |
29 | |
30 | DBIx::Class::Schema::Loader::RelBuilder - Builds relationships for DBIx::Class::Schema::Loader |
31 | |
32 | =head1 SYNOPSIS |
33 | |
19b7d71c |
34 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
996be9ee |
35 | |
36 | =head1 DESCRIPTION |
37 | |
38 | This class builds relationships for L<DBIx::Class::Schema::Loader>. This |
39 | is module is not (yet) for external use. |
40 | |
41 | =head1 METHODS |
42 | |
43 | =head2 new |
44 | |
404aefa4 |
45 | Arguments: $loader object |
996be9ee |
46 | |
47 | =head2 generate_code |
48 | |
dc379dc6 |
49 | Arguments: |
50 | |
c4a69b87 |
51 | [ |
52 | [ local_moniker1 (scalar), fk_info1 (arrayref), uniq_info1 (arrayref) ] |
53 | [ local_moniker2 (scalar), fk_info2 (arrayref), uniq_info2 (arrayref) ] |
dc379dc6 |
54 | ... |
c4a69b87 |
55 | ] |
e8ad6491 |
56 | |
dc379dc6 |
57 | This generates the code for the relationships of each table. |
e8ad6491 |
58 | |
59 | C<local_moniker> is the moniker name of the table which had the REFERENCES |
60 | statements. The fk_info arrayref's contents should take the form: |
61 | |
62 | [ |
63 | { |
c4a69b87 |
64 | local_table => 'some_table', |
65 | local_moniker => 'SomeTable', |
66 | local_columns => [ 'col2', 'col3' ], |
67 | remote_table => 'another_table_moniker', |
e8ad6491 |
68 | remote_moniker => 'AnotherTableMoniker', |
c4a69b87 |
69 | remote_columns => [ 'col5', 'col7' ], |
e8ad6491 |
70 | }, |
71 | { |
c4a69b87 |
72 | local_table => 'some_other_table', |
73 | local_moniker => 'SomeOtherTable', |
74 | local_columns => [ 'col1', 'col4' ], |
75 | remote_table => 'yet_another_table_moniker', |
e8ad6491 |
76 | remote_moniker => 'YetAnotherTableMoniker', |
c4a69b87 |
77 | remote_columns => [ 'col1', 'col2' ], |
e8ad6491 |
78 | }, |
79 | # ... |
80 | ], |
81 | |
dc379dc6 |
82 | The uniq_info arrayref's contents should take the form: |
83 | |
84 | [ |
85 | [ |
86 | uniq_constraint_name => [ 'col1', 'col2' ], |
87 | ], |
88 | [ |
89 | another_uniq_constraint_name => [ 'col1', 'col2' ], |
90 | ], |
91 | ], |
92 | |
e8ad6491 |
93 | This method will return the generated relationships as a hashref keyed on the |
94 | class names. The values are arrayrefs of hashes containing method name and |
95 | arguments, like so: |
996be9ee |
96 | |
97 | { |
98 | 'Some::Source::Class' => [ |
b97c2c1e |
99 | { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ], |
100 | { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ], |
996be9ee |
101 | ], |
102 | 'Another::Source::Class' => [ |
103 | # ... |
104 | ], |
105 | # ... |
106 | } |
8f9d7ce5 |
107 | |
996be9ee |
108 | =cut |
109 | |
1ad8e8c3 |
110 | __PACKAGE__->mk_group_accessors('simple', qw/ |
404aefa4 |
111 | loader |
1ad8e8c3 |
112 | schema |
113 | inflect_plural |
114 | inflect_singular |
115 | relationship_attrs |
a7116285 |
116 | rel_collision_map |
59388920 |
117 | rel_name_map |
1ad8e8c3 |
118 | _temp_classes |
dc379dc6 |
119 | __tagger |
1ad8e8c3 |
120 | /); |
4c7b5f46 |
121 | |
996be9ee |
122 | sub new { |
404aefa4 |
123 | my ($class, $loader) = @_; |
4c7b5f46 |
124 | |
125 | # from old POD about this constructor: |
126 | # C<$schema_class> should be a schema class name, where the source |
127 | # classes have already been set up and registered. Column info, |
128 | # primary key, and unique constraints will be drawn from this |
129 | # schema for all of the existing source monikers. |
130 | |
131 | # Options inflect_plural and inflect_singular are optional, and |
132 | # are better documented in L<DBIx::Class::Schema::Loader::Base>. |
996be9ee |
133 | |
134 | my $self = { |
404aefa4 |
135 | loader => $loader, |
136 | schema => $loader->schema, |
137 | inflect_plural => $loader->inflect_plural, |
138 | inflect_singular => $loader->inflect_singular, |
139 | relationship_attrs => $loader->relationship_attrs, |
140 | rel_collision_map => $loader->rel_collision_map, |
141 | rel_name_map => $loader->rel_name_map, |
1ad8e8c3 |
142 | _temp_classes => [], |
996be9ee |
143 | }; |
144 | |
404aefa4 |
145 | weaken $self->{loader}; #< don't leak |
1ad8e8c3 |
146 | |
147 | bless $self => $class; |
4c7b5f46 |
148 | |
c8c27020 |
149 | # validate the relationship_attrs arg |
1ad8e8c3 |
150 | if( defined $self->relationship_attrs ) { |
5c06aa08 |
151 | ref $self->relationship_attrs eq 'HASH' |
152 | or croak "relationship_attrs must be a hashref"; |
c8c27020 |
153 | } |
996be9ee |
154 | |
1ad8e8c3 |
155 | return $self; |
996be9ee |
156 | } |
157 | |
158 | |
159 | # pluralize a relationship name |
160 | sub _inflect_plural { |
ecf930e6 |
161 | my ($self, $relname) = @_; |
996be9ee |
162 | |
39ef3bfe |
163 | return '' if !defined $relname || $relname eq ''; |
164 | |
59388920 |
165 | my $result; |
166 | my $mapped = 0; |
167 | |
1ad8e8c3 |
168 | if( ref $self->inflect_plural eq 'HASH' ) { |
59388920 |
169 | if (exists $self->inflect_plural->{$relname}) { |
170 | $result = $self->inflect_plural->{$relname}; |
171 | $mapped = 1; |
172 | } |
996be9ee |
173 | } |
1ad8e8c3 |
174 | elsif( ref $self->inflect_plural eq 'CODE' ) { |
175 | my $inflected = $self->inflect_plural->($relname); |
59388920 |
176 | if ($inflected) { |
177 | $result = $inflected; |
178 | $mapped = 1; |
179 | } |
996be9ee |
180 | } |
181 | |
59388920 |
182 | return ($result, $mapped) if $mapped; |
183 | |
184 | return ($self->_to_PL($relname), 0); |
996be9ee |
185 | } |
186 | |
187 | # Singularize a relationship name |
188 | sub _inflect_singular { |
ecf930e6 |
189 | my ($self, $relname) = @_; |
996be9ee |
190 | |
39ef3bfe |
191 | return '' if !defined $relname || $relname eq ''; |
192 | |
59388920 |
193 | my $result; |
194 | my $mapped = 0; |
195 | |
1ad8e8c3 |
196 | if( ref $self->inflect_singular eq 'HASH' ) { |
59388920 |
197 | if (exists $self->inflect_singular->{$relname}) { |
198 | $result = $self->inflect_singular->{$relname}; |
199 | $mapped = 1; |
200 | } |
996be9ee |
201 | } |
1ad8e8c3 |
202 | elsif( ref $self->inflect_singular eq 'CODE' ) { |
203 | my $inflected = $self->inflect_singular->($relname); |
59388920 |
204 | if ($inflected) { |
205 | $result = $inflected; |
206 | $mapped = 1; |
207 | } |
996be9ee |
208 | } |
209 | |
59388920 |
210 | return ($result, $mapped) if $mapped; |
211 | |
212 | return ($self->_to_S($relname), 0); |
c496748b |
213 | } |
214 | |
215 | sub _to_PL { |
216 | my ($self, $name) = @_; |
217 | |
218 | $name =~ s/_/ /g; |
39b22ca9 |
219 | my $plural = Lingua::EN::Inflect::Phrase::to_PL($name); |
c496748b |
220 | $plural =~ s/ /_/g; |
221 | |
222 | return $plural; |
223 | } |
224 | |
c496748b |
225 | sub _to_S { |
226 | my ($self, $name) = @_; |
227 | |
39b22ca9 |
228 | $name =~ s/_/ /g; |
229 | my $singular = Lingua::EN::Inflect::Phrase::to_S($name); |
230 | $singular =~ s/ /_/g; |
231 | |
232 | return $singular; |
996be9ee |
233 | } |
234 | |
53ef681d |
235 | sub _default_relationship_attrs { +{ |
236 | has_many => { |
237 | cascade_delete => 0, |
238 | cascade_copy => 0, |
239 | }, |
240 | might_have => { |
241 | cascade_delete => 0, |
242 | cascade_copy => 0, |
243 | }, |
244 | belongs_to => { |
245 | on_delete => 'CASCADE', |
246 | on_update => 'CASCADE', |
aa0867ee |
247 | is_deferrable => 1, |
53ef681d |
248 | }, |
249 | } } |
250 | |
c8c27020 |
251 | # accessor for options to be passed to each generated relationship |
252 | # type. take single argument, the relationship type name, and returns |
253 | # either a hashref (if some options are set), or nothing |
254 | sub _relationship_attrs { |
255 | my ( $self, $reltype ) = @_; |
1ad8e8c3 |
256 | my $r = $self->relationship_attrs; |
c8c27020 |
257 | |
53ef681d |
258 | my %composite = ( |
259 | %{ $self->_default_relationship_attrs->{$reltype} || {} }, |
260 | %{ $r->{all} || {} } |
261 | ); |
262 | |
c8c27020 |
263 | if( my $specific = $r->{$reltype} ) { |
5c06aa08 |
264 | while( my ($k,$v) = each %$specific ) { |
265 | $composite{$k} = $v; |
266 | } |
c8c27020 |
267 | } |
268 | return \%composite; |
269 | } |
270 | |
ccf9b8a6 |
271 | sub _strip_id_postfix { |
272 | my ($self, $name) = @_; |
273 | |
274 | $name =~ s/_?(?:id|ref|cd|code|num)\z//i; |
275 | |
276 | return $name; |
277 | } |
278 | |
c39e403e |
279 | sub _remote_attrs { |
c496748b |
280 | my ($self, $local_moniker, $local_cols) = @_; |
c39e403e |
281 | |
c496748b |
282 | # get our base set of attrs from _relationship_attrs, if present |
283 | my $attrs = $self->_relationship_attrs('belongs_to') || {}; |
c8c27020 |
284 | |
c496748b |
285 | # If the referring column is nullable, make 'belongs_to' an |
286 | # outer join, unless explicitly set by relationship_attrs |
1ad8e8c3 |
287 | my $nullable = grep { $self->schema->source($local_moniker)->column_info($_)->{is_nullable} } @$local_cols; |
c496748b |
288 | $attrs->{join_type} = 'LEFT' if $nullable && !defined $attrs->{join_type}; |
c39e403e |
289 | |
c496748b |
290 | return $attrs; |
c39e403e |
291 | } |
292 | |
414c61a0 |
293 | sub _sanitize_name { |
294 | my ($self, $name) = @_; |
295 | |
df35916c |
296 | $name = $self->loader->_to_identifier('relationships', $name, '_'); |
297 | |
298 | $name =~ s/\W+/_/g; # if naming >= 8 to_identifier takes care of it |
414c61a0 |
299 | |
300 | return $name; |
301 | } |
302 | |
19b7d71c |
303 | sub _normalize_name { |
304 | my ($self, $name) = @_; |
305 | |
414c61a0 |
306 | $name = $self->_sanitize_name($name); |
307 | |
ea3b8f03 |
308 | my @words = split_name $name, $self->loader->_get_naming_v('relationships'); |
19b7d71c |
309 | |
310 | return join '_', map lc, @words; |
311 | } |
312 | |
f2fc8d01 |
313 | sub _remote_relname { |
314 | my ($self, $remote_table, $cond) = @_; |
315 | |
316 | my $remote_relname; |
317 | # for single-column case, set the remote relname to the column |
318 | # name, to make filter accessors work, but strip trailing _id |
319 | if(scalar keys %{$cond} == 1) { |
320 | my ($col) = values %{$cond}; |
ccf9b8a6 |
321 | $col = $self->_strip_id_postfix($self->_normalize_name($col)); |
59388920 |
322 | ($remote_relname) = $self->_inflect_singular($col); |
f2fc8d01 |
323 | } |
324 | else { |
59388920 |
325 | ($remote_relname) = $self->_inflect_singular($self->_normalize_name($remote_table)); |
f2fc8d01 |
326 | } |
327 | |
328 | return $remote_relname; |
329 | } |
330 | |
a7116285 |
331 | sub _resolve_relname_collision { |
332 | my ($self, $moniker, $cols, $relname) = @_; |
333 | |
334 | return $relname if $relname eq 'id'; # this shouldn't happen, but just in case |
335 | |
c4a69b87 |
336 | my $table = $self->loader->moniker_to_table->{$moniker}; |
dc379dc6 |
337 | |
404aefa4 |
338 | if ($self->loader->_is_result_class_method($relname, $table)) { |
a7116285 |
339 | if (my $map = $self->rel_collision_map) { |
340 | for my $re (keys %$map) { |
341 | if (my @matches = $relname =~ /$re/) { |
342 | return sprintf $map->{$re}, @matches; |
343 | } |
344 | } |
345 | } |
346 | |
347 | my $new_relname = $relname; |
404aefa4 |
348 | while ($self->loader->_is_result_class_method($new_relname, $table)) { |
a7116285 |
349 | $new_relname .= '_rel' |
350 | } |
351 | |
352 | warn <<"EOF"; |
c4a69b87 |
353 | Relationship '$relname' in source '$moniker' for columns '@{[ join ',', @$cols ]}' collides with an inherited method. Renaming to '$new_relname'. |
a7116285 |
354 | See "RELATIONSHIP NAME COLLISIONS" in perldoc DBIx::Class::Schema::Loader::Base . |
355 | EOF |
356 | |
357 | return $new_relname; |
358 | } |
359 | |
360 | return $relname; |
361 | } |
362 | |
996be9ee |
363 | sub generate_code { |
dc379dc6 |
364 | my ($self, $tables) = @_; |
365 | |
366 | # make a copy to destroy |
367 | my @tables = @$tables; |
996be9ee |
368 | |
369 | my $all_code = {}; |
370 | |
dc379dc6 |
371 | while (my ($local_moniker, $rels, $uniqs) = @{ shift @tables || [] }) { |
372 | my $local_class = $self->schema->class($local_moniker); |
057fbb08 |
373 | |
dc379dc6 |
374 | my %counters; |
375 | foreach my $rel (@$rels) { |
376 | next if !$rel->{remote_source}; |
377 | $counters{$rel->{remote_source}}++; |
378 | } |
e8ad6491 |
379 | |
dc379dc6 |
380 | foreach my $rel (@$rels) { |
381 | my $remote_moniker = $rel->{remote_source} |
382 | or next; |
057fbb08 |
383 | |
dc379dc6 |
384 | my $remote_class = $self->schema->class($remote_moniker); |
385 | my $remote_obj = $self->schema->source($remote_moniker); |
386 | my $remote_cols = $rel->{remote_columns} || [ $remote_obj->primary_columns ]; |
057fbb08 |
387 | |
dc379dc6 |
388 | my $local_cols = $rel->{local_columns}; |
e8ad6491 |
389 | |
dc379dc6 |
390 | if($#$local_cols != $#$remote_cols) { |
391 | croak "Column count mismatch: $local_moniker (@$local_cols) " |
392 | . "$remote_moniker (@$remote_cols)"; |
393 | } |
996be9ee |
394 | |
dc379dc6 |
395 | my %cond; |
396 | foreach my $i (0 .. $#$local_cols) { |
397 | $cond{$remote_cols->[$i]} = $local_cols->[$i]; |
398 | } |
399 | |
400 | my ( $local_relname, $remote_relname, $remote_method ) = |
401 | $self->_relnames_and_method( $local_moniker, $rel, \%cond, $uniqs, \%counters ); |
59388920 |
402 | my $local_method = 'belongs_to'; |
403 | |
404 | ($remote_relname) = $self->_rel_name_map($remote_relname, $local_method, $local_class, $local_moniker, $local_cols, $remote_class, $remote_moniker, $remote_cols); |
405 | ($local_relname) = $self->_rel_name_map($local_relname, $remote_method, $remote_class, $remote_moniker, $remote_cols, $local_class, $local_moniker, $local_cols); |
dc379dc6 |
406 | |
59388920 |
407 | $remote_relname = $self->_resolve_relname_collision($local_moniker, $local_cols, $remote_relname); |
408 | $local_relname = $self->_resolve_relname_collision($remote_moniker, $remote_cols, $local_relname); |
dc379dc6 |
409 | |
410 | push(@{$all_code->{$local_class}}, |
59388920 |
411 | { method => $local_method, |
dc379dc6 |
412 | args => [ $remote_relname, |
413 | $remote_class, |
414 | \%cond, |
415 | $self->_remote_attrs($local_moniker, $local_cols), |
416 | ], |
417 | extra => { |
59388920 |
418 | local_class => $local_class, |
419 | local_moniker => $local_moniker, |
420 | remote_moniker => $remote_moniker, |
dc379dc6 |
421 | }, |
422 | } |
423 | ); |
424 | |
425 | my %rev_cond = reverse %cond; |
426 | for (keys %rev_cond) { |
427 | $rev_cond{"foreign.$_"} = "self.".$rev_cond{$_}; |
428 | delete $rev_cond{$_}; |
429 | } |
430 | |
431 | push(@{$all_code->{$remote_class}}, |
432 | { method => $remote_method, |
433 | args => [ $local_relname, |
434 | $local_class, |
435 | \%rev_cond, |
436 | $self->_relationship_attrs($remote_method), |
437 | ], |
438 | extra => { |
59388920 |
439 | local_class => $remote_class, |
440 | local_moniker => $remote_moniker, |
441 | remote_moniker => $local_moniker, |
dc379dc6 |
442 | }, |
443 | } |
444 | ); |
e8ad6491 |
445 | } |
dc379dc6 |
446 | } |
447 | |
448 | # disambiguate rels with the same name |
449 | foreach my $class (keys %$all_code) { |
450 | my $dups = $self->_duplicates($all_code->{$class}); |
996be9ee |
451 | |
dc379dc6 |
452 | $self->_disambiguate($all_code->{$class}, $dups) if $dups; |
453 | } |
454 | |
455 | $self->_cleanup; |
456 | |
457 | return $all_code; |
458 | } |
459 | |
460 | sub _duplicates { |
461 | my ($self, $rels) = @_; |
462 | |
463 | my @rels = map [ $_->{args}[0] => $_ ], @$rels; |
464 | my %rel_names; |
465 | $rel_names{$_}++ foreach map $_->[0], @rels; |
466 | |
467 | my @dups = grep $rel_names{$_} > 1, keys %rel_names; |
468 | |
469 | my %dups; |
470 | |
471 | foreach my $dup (@dups) { |
472 | $dups{$dup} = [ map $_->[1], grep { $_->[0] eq $dup } @rels ]; |
473 | } |
474 | |
475 | return if not %dups; |
476 | |
477 | return \%dups; |
478 | } |
479 | |
480 | sub _tagger { |
481 | my $self = shift; |
482 | |
483 | $self->__tagger(Lingua::EN::Tagger->new) unless $self->__tagger; |
484 | |
485 | return $self->__tagger; |
486 | } |
7dba7c70 |
487 | |
dc379dc6 |
488 | sub _adjectives { |
489 | my ($self, @cols) = @_; |
a7116285 |
490 | |
dc379dc6 |
491 | my @adjectives; |
492 | |
493 | foreach my $col (@cols) { |
494 | my @words = split_name $col; |
495 | |
496 | my $tagged = $self->_tagger->get_readable(join ' ', @words); |
497 | |
498 | push @adjectives, $tagged =~ m{\G(\w+)/JJ\s+}g; |
499 | } |
500 | |
501 | return @adjectives; |
502 | } |
503 | |
5975bbe6 |
504 | sub _name_to_identifier { |
505 | my ($self, $name) = @_; |
506 | |
507 | my $to_identifier = $self->loader->naming->{force_ascii} ? |
508 | \&String::ToIdentifier::EN::to_identifier |
509 | : \&String::ToIdentifier::EN::Unicode::to_identifier; |
510 | |
511 | return join '_', map lc, split_name $to_identifier->($name, '_'); |
512 | } |
513 | |
dc379dc6 |
514 | sub _disambiguate { |
515 | my ($self, $all_rels, $dups) = @_; |
516 | |
5975bbe6 |
517 | DUP: foreach my $dup (keys %$dups) { |
dc379dc6 |
518 | my @rels = @{ $dups->{$dup} }; |
519 | |
5975bbe6 |
520 | # Check if there are rels to the same table name in different |
521 | # schemas/databases, if so qualify them. |
522 | my @tables = map $self->loader->moniker_to_table->{$_->{extra}{remote_moniker}}, |
523 | @rels; |
524 | |
525 | # databases are different, prepend database |
526 | if ($tables[0]->can('database') && (uniq map $_->database||'', @tables) > 1) { |
527 | # If any rels are in the same database, we have to distinguish by |
528 | # both schema and database. |
529 | my %db_counts; |
530 | $db_counts{$_}++ for map $_->database, @tables; |
531 | my $use_schema = any { $_ > 1 } values %db_counts; |
532 | |
533 | foreach my $i (0..$#rels) { |
534 | my $rel = $rels[$i]; |
535 | my $table = $tables[$i]; |
536 | |
537 | $rel->{args}[0] = $self->_name_to_identifier($table->database) |
538 | . ($use_schema ? ('_' . $self->name_to_identifier($table->schema)) : '') |
539 | . '_' . $rel->{args}[0]; |
540 | } |
541 | next DUP; |
542 | } |
543 | # schemas are different, prepend schema |
544 | elsif ((uniq map $_->schema||'', @tables) > 1) { |
545 | foreach my $i (0..$#rels) { |
546 | my $rel = $rels[$i]; |
547 | my $table = $tables[$i]; |
548 | |
549 | $rel->{args}[0] = $self->_name_to_identifier($table->schema) |
550 | . '_' . $rel->{args}[0]; |
551 | } |
552 | next DUP; |
553 | } |
554 | |
dc379dc6 |
555 | foreach my $rel (@rels) { |
556 | next if $rel->{method} eq 'belongs_to'; |
557 | |
558 | my @to_cols = apply { s/^foreign\.//i } |
559 | keys %{ $rel->{args}[2] }; |
560 | |
561 | my @adjectives = $self->_adjectives(@to_cols); |
562 | |
563 | # If there are no adjectives, and there is only one might_have |
564 | # rel to that class, we hardcode 'active'. |
565 | |
566 | my $to_class = $rel->{args}[1]; |
567 | |
568 | if ((not @adjectives) |
569 | && (grep { $_->{method} eq 'might_have' |
570 | && $_->{args}[1] eq $to_class } @$all_rels) == 1) { |
571 | |
572 | @adjectives = 'active'; |
996be9ee |
573 | } |
e8ad6491 |
574 | |
dc379dc6 |
575 | if (@adjectives) { |
576 | my $rel_name = join '_', sort(@adjectives), $rel->{args}[0]; |
577 | |
59388920 |
578 | ($rel_name) = $rel->{method} eq 'might_have' ? |
dc379dc6 |
579 | $self->_inflect_singular($rel_name) |
580 | : |
581 | $self->_inflect_plural($rel_name); |
582 | |
59388920 |
583 | my ($local_class, $local_moniker, $remote_moniker) |
584 | = @{ $rel->{extra} } |
585 | {qw/local_class local_moniker remote_moniker/}; |
dc379dc6 |
586 | |
587 | my @from_cols = apply { s/^self\.//i } |
588 | values %{ $rel->{args}[2] }; |
057fbb08 |
589 | |
59388920 |
590 | ($rel_name) = $self->_rel_name_map($rel_name, $rel->{method}, $local_class, $local_moniker, \@from_cols, $to_class, $remote_moniker, \@to_cols); |
591 | |
592 | $rel_name = $self->_resolve_relname_collision($local_moniker, \@from_cols, $rel_name); |
dc379dc6 |
593 | |
594 | $rel->{args}[0] = $rel_name; |
e8ad6491 |
595 | } |
dc379dc6 |
596 | } |
996be9ee |
597 | } |
598 | |
dc379dc6 |
599 | # Check again for duplicates, since the heuristics above may not have resolved them all. |
600 | |
601 | if ($dups = $self->_duplicates($all_rels)) { |
602 | foreach my $dup (keys %$dups) { |
603 | # sort by method |
604 | my @rels = map $_->[1], sort { $a->[0] <=> $b->[0] } map [ |
605 | ($_->{method} eq 'belongs_to' ? 3 : $_->{method} eq 'has_many' ? 2 : 1), $_ |
606 | ], @{ $dups->{$dup} }; |
607 | |
608 | my $rel_num = 2; |
609 | |
610 | foreach my $rel (@rels[1 .. $#rels]) { |
611 | my $inflect_type = $rel->{method} eq 'has_many' ? |
612 | 'inflect_plural' |
613 | : |
614 | 'inflect_singular'; |
615 | |
616 | my $inflect_method = "_$inflect_type"; |
617 | |
59388920 |
618 | my $relname_new_uninflected = $rel->{args}[0] . "_$rel_num"; |
dc379dc6 |
619 | |
620 | $rel_num++; |
621 | |
59388920 |
622 | my ($local_class, $local_moniker, $remote_moniker) |
623 | = @{ $rel->{extra} } |
624 | {qw/local_class local_moniker remote_moniker/}; |
dc379dc6 |
625 | |
626 | my @from_cols = apply { s/^self\.//i } |
627 | values %{ $rel->{args}[2] }; |
628 | |
59388920 |
629 | my @to_cols = apply { s/^foreign\.//i } |
630 | keys %{ $rel->{args}[2] }; |
631 | |
632 | my $to_class = $rel->{args}[1]; |
633 | |
634 | my ($relname_new, $inflect_mapped) = |
635 | $self->$inflect_method($relname_new_uninflected); |
636 | |
637 | my $rel_name_mapped; |
638 | |
639 | ($relname_new, $rel_name_mapped) = $self->_rel_name_map($relname_new, $rel->{method}, $local_class, $local_moniker, \@from_cols, $to_class, $remote_moniker, \@to_cols); |
640 | |
641 | my $mapped = $inflect_mapped || $rel_name_mapped; |
642 | |
643 | warn <<"EOF" unless $mapped; |
644 | Could not find a proper name for relationship '$relname_new' in source |
645 | '$local_moniker' for columns '@{[ join ',', @from_cols ]}'. Supply a value in |
646 | '$inflect_type' or 'rel_name_map' for '$relname_new_uninflected' to name this |
647 | relationship. |
dc379dc6 |
648 | EOF |
649 | |
59388920 |
650 | $relname_new = $self->_resolve_relname_collision($local_moniker, \@from_cols, $relname_new); |
aa608e1a |
651 | |
dc379dc6 |
652 | $rel->{args}[0] = $relname_new; |
653 | } |
654 | } |
655 | } |
996be9ee |
656 | } |
657 | |
39ef3bfe |
658 | sub _relnames_and_method { |
057fbb08 |
659 | my ( $self, $local_moniker, $rel, $cond, $uniqs, $counters ) = @_; |
e9c09ed9 |
660 | |
59388920 |
661 | my $remote_moniker = $rel->{remote_source}; |
662 | my $remote_obj = $self->schema->source( $remote_moniker ); |
663 | my $remote_class = $self->schema->class( $remote_moniker ); |
c4a69b87 |
664 | my $remote_relname = $self->_remote_relname( $rel->{remote_table}, $cond); |
fa6f8d4e |
665 | |
59388920 |
666 | my $local_cols = $rel->{local_columns}; |
c4a69b87 |
667 | my $local_table = $rel->{local_table}; |
59388920 |
668 | my $local_class = $self->schema->class($local_moniker); |
669 | my $local_source = $self->schema->source($local_moniker); |
057fbb08 |
670 | |
1ad8e8c3 |
671 | my $local_relname_uninflected = $self->_normalize_name($local_table); |
59388920 |
672 | my ($local_relname) = $self->_inflect_plural($self->_normalize_name($local_table)); |
fa6f8d4e |
673 | |
057fbb08 |
674 | my $remote_method = 'has_many'; |
675 | |
676 | # If the local columns have a UNIQUE constraint, this is a one-to-one rel |
50b95db6 |
677 | if (array_eq([ $local_source->primary_columns ], $local_cols) || |
678 | grep { array_eq($_->[1], $local_cols) } @$uniqs) { |
59388920 |
679 | $remote_method = 'might_have'; |
680 | ($local_relname) = $self->_inflect_singular($local_relname_uninflected); |
057fbb08 |
681 | } |
fa6f8d4e |
682 | |
1ad8e8c3 |
683 | # If more than one rel between this pair of tables, use the local |
684 | # col names to distinguish, unless the rel was created previously. |
685 | if ($counters->{$remote_moniker} > 1) { |
686 | my $relationship_exists = 0; |
687 | |
404aefa4 |
688 | if (-f (my $existing_remote_file = $self->loader->get_dump_filename($remote_class))) { |
1ad8e8c3 |
689 | my $class = "${remote_class}Temporary"; |
690 | |
8c70d2c7 |
691 | if (not Class::Inspector->loaded($class)) { |
fcf328c7 |
692 | my $code = slurp_file $existing_remote_file; |
1ad8e8c3 |
693 | |
694 | $code =~ s/(?<=package $remote_class)/Temporary/g; |
695 | |
6e4b7bb1 |
696 | $code =~ s/__PACKAGE__->meta->make_immutable[^;]*;//g; |
1ad8e8c3 |
697 | |
698 | eval $code; |
699 | die $@ if $@; |
700 | |
701 | push @{ $self->_temp_classes }, $class; |
702 | } |
703 | |
704 | if ($class->has_relationship($local_relname)) { |
705 | my $rel_cols = [ sort { $a cmp $b } apply { s/^foreign\.//i } |
706 | (keys %{ $class->relationship_info($local_relname)->{cond} }) ]; |
707 | |
50b95db6 |
708 | $relationship_exists = 1 if array_eq([ sort @$local_cols ], $rel_cols); |
1ad8e8c3 |
709 | } |
710 | } |
711 | |
712 | if (not $relationship_exists) { |
713 | my $colnames = q{_} . $self->_normalize_name(join '_', @$local_cols); |
714 | $remote_relname .= $colnames if keys %$cond > 1; |
715 | |
ccf9b8a6 |
716 | $local_relname = $self->_strip_id_postfix($self->_normalize_name($local_table . $colnames)); |
1ad8e8c3 |
717 | |
718 | $local_relname_uninflected = $local_relname; |
59388920 |
719 | ($local_relname) = $self->_inflect_plural($local_relname); |
1ad8e8c3 |
720 | |
721 | # if colnames were added and this is a might_have, re-inflect |
722 | if ($remote_method eq 'might_have') { |
59388920 |
723 | ($local_relname) = $self->_inflect_singular($local_relname_uninflected); |
1ad8e8c3 |
724 | } |
725 | } |
726 | } |
727 | |
59388920 |
728 | return ($local_relname, $remote_relname, $remote_method); |
729 | } |
730 | |
731 | sub _rel_name_map { |
732 | my ($self, $relname, $method, $local_class, $local_moniker, $local_cols, |
733 | $remote_class, $remote_moniker, $remote_cols) = @_; |
734 | |
735 | my $info = { |
736 | name => $relname, |
737 | type => $method, |
738 | local_class => $local_class, |
739 | local_moniker => $local_moniker, |
740 | local_columns => $local_cols, |
741 | remote_class => $remote_class, |
742 | remote_moniker => $remote_moniker, |
743 | remote_columns => $remote_cols, |
744 | }; |
745 | |
746 | my $new_name = $relname; |
747 | |
748 | my $map = $self->rel_name_map; |
749 | my $mapped = 0; |
750 | |
751 | if ('HASH' eq ref($map)) { |
752 | my $name = $info->{name}; |
753 | my $moniker = $info->{local_moniker}; |
754 | if ($map->{$moniker} and 'HASH' eq ref($map->{$moniker}) |
755 | and $map->{$moniker}{$name} |
756 | ) { |
757 | $new_name = $map->{$moniker}{$name}; |
758 | $mapped = 1; |
759 | } |
760 | elsif ($map->{$name} and not 'HASH' eq ref($map->{$name})) { |
761 | $new_name = $map->{$name}; |
762 | $mapped = 1; |
763 | } |
764 | } |
765 | elsif ('CODE' eq ref($map)) { |
766 | my $name = $map->($info); |
767 | if ($name) { |
768 | $new_name = $name; |
769 | $mapped = 1; |
770 | } |
771 | } |
772 | |
773 | return ($new_name, $mapped); |
fa6f8d4e |
774 | } |
775 | |
dc379dc6 |
776 | sub _cleanup { |
1ad8e8c3 |
777 | my $self = shift; |
778 | |
779 | for my $class (@{ $self->_temp_classes }) { |
780 | Class::Unload->unload($class); |
781 | } |
782 | |
783 | $self->_temp_classes([]); |
784 | } |
785 | |
be80bba7 |
786 | =head1 AUTHOR |
787 | |
9cc8e7e1 |
788 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
789 | |
790 | =head1 LICENSE |
791 | |
792 | This library is free software; you can redistribute it and/or modify it under |
793 | the same terms as Perl itself. |
794 | |
795 | =cut |
796 | |
996be9ee |
797 | 1; |
19b7d71c |
798 | # vim:et sts=4 sw=4 tw=0: |