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'; |
fcf328c7 |
9 | use DBIx::Class::Schema::Loader::Utils qw/split_name slurp_file/; |
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 | |
4295c4b4 |
20 | our $VERSION = '0.07010'; |
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} = $v; |
266 | } |
c8c27020 |
267 | } |
268 | return \%composite; |
269 | } |
270 | |
26f1c8c9 |
271 | sub _array_eq { |
ecf930e6 |
272 | my ($self, $a, $b) = @_; |
26f1c8c9 |
273 | |
274 | return unless @$a == @$b; |
275 | |
276 | for (my $i = 0; $i < @$a; $i++) { |
277 | return unless $a->[$i] eq $b->[$i]; |
278 | } |
279 | return 1; |
280 | } |
281 | |
c39e403e |
282 | sub _remote_attrs { |
c496748b |
283 | my ($self, $local_moniker, $local_cols) = @_; |
c39e403e |
284 | |
c496748b |
285 | # get our base set of attrs from _relationship_attrs, if present |
286 | my $attrs = $self->_relationship_attrs('belongs_to') || {}; |
c8c27020 |
287 | |
c496748b |
288 | # If the referring column is nullable, make 'belongs_to' an |
289 | # outer join, unless explicitly set by relationship_attrs |
1ad8e8c3 |
290 | my $nullable = grep { $self->schema->source($local_moniker)->column_info($_)->{is_nullable} } @$local_cols; |
c496748b |
291 | $attrs->{join_type} = 'LEFT' if $nullable && !defined $attrs->{join_type}; |
c39e403e |
292 | |
c496748b |
293 | return $attrs; |
c39e403e |
294 | } |
295 | |
414c61a0 |
296 | sub _sanitize_name { |
297 | my ($self, $name) = @_; |
298 | |
c4a69b87 |
299 | $name =~ s/\W+/_/g; |
414c61a0 |
300 | |
301 | return $name; |
302 | } |
303 | |
19b7d71c |
304 | sub _normalize_name { |
305 | my ($self, $name) = @_; |
306 | |
414c61a0 |
307 | $name = $self->_sanitize_name($name); |
308 | |
cc4f11a2 |
309 | my @words = split_name $name; |
19b7d71c |
310 | |
311 | return join '_', map lc, @words; |
312 | } |
313 | |
f2fc8d01 |
314 | sub _remote_relname { |
315 | my ($self, $remote_table, $cond) = @_; |
316 | |
317 | my $remote_relname; |
318 | # for single-column case, set the remote relname to the column |
319 | # name, to make filter accessors work, but strip trailing _id |
320 | if(scalar keys %{$cond} == 1) { |
321 | my ($col) = values %{$cond}; |
19b7d71c |
322 | $col = $self->_normalize_name($col); |
f2fc8d01 |
323 | $col =~ s/_id$//; |
59388920 |
324 | ($remote_relname) = $self->_inflect_singular($col); |
f2fc8d01 |
325 | } |
326 | else { |
59388920 |
327 | ($remote_relname) = $self->_inflect_singular($self->_normalize_name($remote_table)); |
f2fc8d01 |
328 | } |
329 | |
330 | return $remote_relname; |
331 | } |
332 | |
a7116285 |
333 | sub _resolve_relname_collision { |
334 | my ($self, $moniker, $cols, $relname) = @_; |
335 | |
336 | return $relname if $relname eq 'id'; # this shouldn't happen, but just in case |
337 | |
c4a69b87 |
338 | my $table = $self->loader->moniker_to_table->{$moniker}; |
dc379dc6 |
339 | |
404aefa4 |
340 | if ($self->loader->_is_result_class_method($relname, $table)) { |
a7116285 |
341 | if (my $map = $self->rel_collision_map) { |
342 | for my $re (keys %$map) { |
343 | if (my @matches = $relname =~ /$re/) { |
344 | return sprintf $map->{$re}, @matches; |
345 | } |
346 | } |
347 | } |
348 | |
349 | my $new_relname = $relname; |
404aefa4 |
350 | while ($self->loader->_is_result_class_method($new_relname, $table)) { |
a7116285 |
351 | $new_relname .= '_rel' |
352 | } |
353 | |
354 | warn <<"EOF"; |
c4a69b87 |
355 | Relationship '$relname' in source '$moniker' for columns '@{[ join ',', @$cols ]}' collides with an inherited method. Renaming to '$new_relname'. |
a7116285 |
356 | See "RELATIONSHIP NAME COLLISIONS" in perldoc DBIx::Class::Schema::Loader::Base . |
357 | EOF |
358 | |
359 | return $new_relname; |
360 | } |
361 | |
362 | return $relname; |
363 | } |
364 | |
996be9ee |
365 | sub generate_code { |
dc379dc6 |
366 | my ($self, $tables) = @_; |
367 | |
368 | # make a copy to destroy |
369 | my @tables = @$tables; |
996be9ee |
370 | |
371 | my $all_code = {}; |
372 | |
dc379dc6 |
373 | while (my ($local_moniker, $rels, $uniqs) = @{ shift @tables || [] }) { |
374 | my $local_class = $self->schema->class($local_moniker); |
057fbb08 |
375 | |
dc379dc6 |
376 | my %counters; |
377 | foreach my $rel (@$rels) { |
378 | next if !$rel->{remote_source}; |
379 | $counters{$rel->{remote_source}}++; |
380 | } |
e8ad6491 |
381 | |
dc379dc6 |
382 | foreach my $rel (@$rels) { |
383 | my $remote_moniker = $rel->{remote_source} |
384 | or next; |
057fbb08 |
385 | |
dc379dc6 |
386 | my $remote_class = $self->schema->class($remote_moniker); |
387 | my $remote_obj = $self->schema->source($remote_moniker); |
388 | my $remote_cols = $rel->{remote_columns} || [ $remote_obj->primary_columns ]; |
057fbb08 |
389 | |
dc379dc6 |
390 | my $local_cols = $rel->{local_columns}; |
e8ad6491 |
391 | |
dc379dc6 |
392 | if($#$local_cols != $#$remote_cols) { |
393 | croak "Column count mismatch: $local_moniker (@$local_cols) " |
394 | . "$remote_moniker (@$remote_cols)"; |
395 | } |
996be9ee |
396 | |
dc379dc6 |
397 | my %cond; |
398 | foreach my $i (0 .. $#$local_cols) { |
399 | $cond{$remote_cols->[$i]} = $local_cols->[$i]; |
400 | } |
401 | |
402 | my ( $local_relname, $remote_relname, $remote_method ) = |
403 | $self->_relnames_and_method( $local_moniker, $rel, \%cond, $uniqs, \%counters ); |
59388920 |
404 | my $local_method = 'belongs_to'; |
405 | |
406 | ($remote_relname) = $self->_rel_name_map($remote_relname, $local_method, $local_class, $local_moniker, $local_cols, $remote_class, $remote_moniker, $remote_cols); |
407 | ($local_relname) = $self->_rel_name_map($local_relname, $remote_method, $remote_class, $remote_moniker, $remote_cols, $local_class, $local_moniker, $local_cols); |
dc379dc6 |
408 | |
59388920 |
409 | $remote_relname = $self->_resolve_relname_collision($local_moniker, $local_cols, $remote_relname); |
410 | $local_relname = $self->_resolve_relname_collision($remote_moniker, $remote_cols, $local_relname); |
dc379dc6 |
411 | |
412 | push(@{$all_code->{$local_class}}, |
59388920 |
413 | { method => $local_method, |
dc379dc6 |
414 | args => [ $remote_relname, |
415 | $remote_class, |
416 | \%cond, |
417 | $self->_remote_attrs($local_moniker, $local_cols), |
418 | ], |
419 | extra => { |
59388920 |
420 | local_class => $local_class, |
421 | local_moniker => $local_moniker, |
422 | remote_moniker => $remote_moniker, |
dc379dc6 |
423 | }, |
424 | } |
425 | ); |
426 | |
427 | my %rev_cond = reverse %cond; |
428 | for (keys %rev_cond) { |
429 | $rev_cond{"foreign.$_"} = "self.".$rev_cond{$_}; |
430 | delete $rev_cond{$_}; |
431 | } |
432 | |
433 | push(@{$all_code->{$remote_class}}, |
434 | { method => $remote_method, |
435 | args => [ $local_relname, |
436 | $local_class, |
437 | \%rev_cond, |
438 | $self->_relationship_attrs($remote_method), |
439 | ], |
440 | extra => { |
59388920 |
441 | local_class => $remote_class, |
442 | local_moniker => $remote_moniker, |
443 | remote_moniker => $local_moniker, |
dc379dc6 |
444 | }, |
445 | } |
446 | ); |
e8ad6491 |
447 | } |
dc379dc6 |
448 | } |
449 | |
450 | # disambiguate rels with the same name |
451 | foreach my $class (keys %$all_code) { |
452 | my $dups = $self->_duplicates($all_code->{$class}); |
996be9ee |
453 | |
dc379dc6 |
454 | $self->_disambiguate($all_code->{$class}, $dups) if $dups; |
455 | } |
456 | |
457 | $self->_cleanup; |
458 | |
459 | return $all_code; |
460 | } |
461 | |
462 | sub _duplicates { |
463 | my ($self, $rels) = @_; |
464 | |
465 | my @rels = map [ $_->{args}[0] => $_ ], @$rels; |
466 | my %rel_names; |
467 | $rel_names{$_}++ foreach map $_->[0], @rels; |
468 | |
469 | my @dups = grep $rel_names{$_} > 1, keys %rel_names; |
470 | |
471 | my %dups; |
472 | |
473 | foreach my $dup (@dups) { |
474 | $dups{$dup} = [ map $_->[1], grep { $_->[0] eq $dup } @rels ]; |
475 | } |
476 | |
477 | return if not %dups; |
478 | |
479 | return \%dups; |
480 | } |
481 | |
482 | sub _tagger { |
483 | my $self = shift; |
484 | |
485 | $self->__tagger(Lingua::EN::Tagger->new) unless $self->__tagger; |
486 | |
487 | return $self->__tagger; |
488 | } |
7dba7c70 |
489 | |
dc379dc6 |
490 | sub _adjectives { |
491 | my ($self, @cols) = @_; |
a7116285 |
492 | |
dc379dc6 |
493 | my @adjectives; |
494 | |
495 | foreach my $col (@cols) { |
496 | my @words = split_name $col; |
497 | |
498 | my $tagged = $self->_tagger->get_readable(join ' ', @words); |
499 | |
500 | push @adjectives, $tagged =~ m{\G(\w+)/JJ\s+}g; |
501 | } |
502 | |
503 | return @adjectives; |
504 | } |
505 | |
5975bbe6 |
506 | sub _name_to_identifier { |
507 | my ($self, $name) = @_; |
508 | |
509 | my $to_identifier = $self->loader->naming->{force_ascii} ? |
510 | \&String::ToIdentifier::EN::to_identifier |
511 | : \&String::ToIdentifier::EN::Unicode::to_identifier; |
512 | |
513 | return join '_', map lc, split_name $to_identifier->($name, '_'); |
514 | } |
515 | |
dc379dc6 |
516 | sub _disambiguate { |
517 | my ($self, $all_rels, $dups) = @_; |
518 | |
5975bbe6 |
519 | DUP: foreach my $dup (keys %$dups) { |
dc379dc6 |
520 | my @rels = @{ $dups->{$dup} }; |
521 | |
5975bbe6 |
522 | # Check if there are rels to the same table name in different |
523 | # schemas/databases, if so qualify them. |
524 | my @tables = map $self->loader->moniker_to_table->{$_->{extra}{remote_moniker}}, |
525 | @rels; |
526 | |
527 | # databases are different, prepend database |
528 | if ($tables[0]->can('database') && (uniq map $_->database||'', @tables) > 1) { |
529 | # If any rels are in the same database, we have to distinguish by |
530 | # both schema and database. |
531 | my %db_counts; |
532 | $db_counts{$_}++ for map $_->database, @tables; |
533 | my $use_schema = any { $_ > 1 } values %db_counts; |
534 | |
535 | foreach my $i (0..$#rels) { |
536 | my $rel = $rels[$i]; |
537 | my $table = $tables[$i]; |
538 | |
539 | $rel->{args}[0] = $self->_name_to_identifier($table->database) |
540 | . ($use_schema ? ('_' . $self->name_to_identifier($table->schema)) : '') |
541 | . '_' . $rel->{args}[0]; |
542 | } |
543 | next DUP; |
544 | } |
545 | # schemas are different, prepend schema |
546 | elsif ((uniq map $_->schema||'', @tables) > 1) { |
547 | foreach my $i (0..$#rels) { |
548 | my $rel = $rels[$i]; |
549 | my $table = $tables[$i]; |
550 | |
551 | $rel->{args}[0] = $self->_name_to_identifier($table->schema) |
552 | . '_' . $rel->{args}[0]; |
553 | } |
554 | next DUP; |
555 | } |
556 | |
dc379dc6 |
557 | foreach my $rel (@rels) { |
558 | next if $rel->{method} eq 'belongs_to'; |
559 | |
560 | my @to_cols = apply { s/^foreign\.//i } |
561 | keys %{ $rel->{args}[2] }; |
562 | |
563 | my @adjectives = $self->_adjectives(@to_cols); |
564 | |
565 | # If there are no adjectives, and there is only one might_have |
566 | # rel to that class, we hardcode 'active'. |
567 | |
568 | my $to_class = $rel->{args}[1]; |
569 | |
570 | if ((not @adjectives) |
571 | && (grep { $_->{method} eq 'might_have' |
572 | && $_->{args}[1] eq $to_class } @$all_rels) == 1) { |
573 | |
574 | @adjectives = 'active'; |
996be9ee |
575 | } |
e8ad6491 |
576 | |
dc379dc6 |
577 | if (@adjectives) { |
578 | my $rel_name = join '_', sort(@adjectives), $rel->{args}[0]; |
579 | |
59388920 |
580 | ($rel_name) = $rel->{method} eq 'might_have' ? |
dc379dc6 |
581 | $self->_inflect_singular($rel_name) |
582 | : |
583 | $self->_inflect_plural($rel_name); |
584 | |
59388920 |
585 | my ($local_class, $local_moniker, $remote_moniker) |
586 | = @{ $rel->{extra} } |
587 | {qw/local_class local_moniker remote_moniker/}; |
dc379dc6 |
588 | |
589 | my @from_cols = apply { s/^self\.//i } |
590 | values %{ $rel->{args}[2] }; |
057fbb08 |
591 | |
59388920 |
592 | ($rel_name) = $self->_rel_name_map($rel_name, $rel->{method}, $local_class, $local_moniker, \@from_cols, $to_class, $remote_moniker, \@to_cols); |
593 | |
594 | $rel_name = $self->_resolve_relname_collision($local_moniker, \@from_cols, $rel_name); |
dc379dc6 |
595 | |
596 | $rel->{args}[0] = $rel_name; |
e8ad6491 |
597 | } |
dc379dc6 |
598 | } |
996be9ee |
599 | } |
600 | |
dc379dc6 |
601 | # Check again for duplicates, since the heuristics above may not have resolved them all. |
602 | |
603 | if ($dups = $self->_duplicates($all_rels)) { |
604 | foreach my $dup (keys %$dups) { |
605 | # sort by method |
606 | my @rels = map $_->[1], sort { $a->[0] <=> $b->[0] } map [ |
607 | ($_->{method} eq 'belongs_to' ? 3 : $_->{method} eq 'has_many' ? 2 : 1), $_ |
608 | ], @{ $dups->{$dup} }; |
609 | |
610 | my $rel_num = 2; |
611 | |
612 | foreach my $rel (@rels[1 .. $#rels]) { |
613 | my $inflect_type = $rel->{method} eq 'has_many' ? |
614 | 'inflect_plural' |
615 | : |
616 | 'inflect_singular'; |
617 | |
618 | my $inflect_method = "_$inflect_type"; |
619 | |
59388920 |
620 | my $relname_new_uninflected = $rel->{args}[0] . "_$rel_num"; |
dc379dc6 |
621 | |
622 | $rel_num++; |
623 | |
59388920 |
624 | my ($local_class, $local_moniker, $remote_moniker) |
625 | = @{ $rel->{extra} } |
626 | {qw/local_class local_moniker remote_moniker/}; |
dc379dc6 |
627 | |
628 | my @from_cols = apply { s/^self\.//i } |
629 | values %{ $rel->{args}[2] }; |
630 | |
59388920 |
631 | my @to_cols = apply { s/^foreign\.//i } |
632 | keys %{ $rel->{args}[2] }; |
633 | |
634 | my $to_class = $rel->{args}[1]; |
635 | |
636 | my ($relname_new, $inflect_mapped) = |
637 | $self->$inflect_method($relname_new_uninflected); |
638 | |
639 | my $rel_name_mapped; |
640 | |
641 | ($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); |
642 | |
643 | my $mapped = $inflect_mapped || $rel_name_mapped; |
644 | |
645 | warn <<"EOF" unless $mapped; |
646 | Could not find a proper name for relationship '$relname_new' in source |
647 | '$local_moniker' for columns '@{[ join ',', @from_cols ]}'. Supply a value in |
648 | '$inflect_type' or 'rel_name_map' for '$relname_new_uninflected' to name this |
649 | relationship. |
dc379dc6 |
650 | EOF |
651 | |
59388920 |
652 | $relname_new = $self->_resolve_relname_collision($local_moniker, \@from_cols, $relname_new); |
aa608e1a |
653 | |
dc379dc6 |
654 | $rel->{args}[0] = $relname_new; |
655 | } |
656 | } |
657 | } |
996be9ee |
658 | } |
659 | |
39ef3bfe |
660 | sub _relnames_and_method { |
057fbb08 |
661 | my ( $self, $local_moniker, $rel, $cond, $uniqs, $counters ) = @_; |
e9c09ed9 |
662 | |
59388920 |
663 | my $remote_moniker = $rel->{remote_source}; |
664 | my $remote_obj = $self->schema->source( $remote_moniker ); |
665 | my $remote_class = $self->schema->class( $remote_moniker ); |
c4a69b87 |
666 | my $remote_relname = $self->_remote_relname( $rel->{remote_table}, $cond); |
fa6f8d4e |
667 | |
59388920 |
668 | my $local_cols = $rel->{local_columns}; |
c4a69b87 |
669 | my $local_table = $rel->{local_table}; |
59388920 |
670 | my $local_class = $self->schema->class($local_moniker); |
671 | my $local_source = $self->schema->source($local_moniker); |
057fbb08 |
672 | |
1ad8e8c3 |
673 | my $local_relname_uninflected = $self->_normalize_name($local_table); |
59388920 |
674 | my ($local_relname) = $self->_inflect_plural($self->_normalize_name($local_table)); |
fa6f8d4e |
675 | |
057fbb08 |
676 | my $remote_method = 'has_many'; |
677 | |
678 | # If the local columns have a UNIQUE constraint, this is a one-to-one rel |
ecf930e6 |
679 | if ($self->_array_eq([ $local_source->primary_columns ], $local_cols) || |
680 | grep { $self->_array_eq($_->[1], $local_cols) } @$uniqs) { |
59388920 |
681 | $remote_method = 'might_have'; |
682 | ($local_relname) = $self->_inflect_singular($local_relname_uninflected); |
057fbb08 |
683 | } |
fa6f8d4e |
684 | |
1ad8e8c3 |
685 | # If more than one rel between this pair of tables, use the local |
686 | # col names to distinguish, unless the rel was created previously. |
687 | if ($counters->{$remote_moniker} > 1) { |
688 | my $relationship_exists = 0; |
689 | |
404aefa4 |
690 | if (-f (my $existing_remote_file = $self->loader->get_dump_filename($remote_class))) { |
1ad8e8c3 |
691 | my $class = "${remote_class}Temporary"; |
692 | |
8c70d2c7 |
693 | if (not Class::Inspector->loaded($class)) { |
fcf328c7 |
694 | my $code = slurp_file $existing_remote_file; |
1ad8e8c3 |
695 | |
696 | $code =~ s/(?<=package $remote_class)/Temporary/g; |
697 | |
6e4b7bb1 |
698 | $code =~ s/__PACKAGE__->meta->make_immutable[^;]*;//g; |
1ad8e8c3 |
699 | |
700 | eval $code; |
701 | die $@ if $@; |
702 | |
703 | push @{ $self->_temp_classes }, $class; |
704 | } |
705 | |
706 | if ($class->has_relationship($local_relname)) { |
707 | my $rel_cols = [ sort { $a cmp $b } apply { s/^foreign\.//i } |
708 | (keys %{ $class->relationship_info($local_relname)->{cond} }) ]; |
709 | |
710 | $relationship_exists = 1 if $self->_array_eq([ sort @$local_cols ], $rel_cols); |
711 | } |
712 | } |
713 | |
714 | if (not $relationship_exists) { |
715 | my $colnames = q{_} . $self->_normalize_name(join '_', @$local_cols); |
716 | $remote_relname .= $colnames if keys %$cond > 1; |
717 | |
718 | $local_relname = $self->_normalize_name($local_table . $colnames); |
719 | $local_relname =~ s/_id$//; |
720 | |
721 | $local_relname_uninflected = $local_relname; |
59388920 |
722 | ($local_relname) = $self->_inflect_plural($local_relname); |
1ad8e8c3 |
723 | |
724 | # if colnames were added and this is a might_have, re-inflect |
725 | if ($remote_method eq 'might_have') { |
59388920 |
726 | ($local_relname) = $self->_inflect_singular($local_relname_uninflected); |
1ad8e8c3 |
727 | } |
728 | } |
729 | } |
730 | |
59388920 |
731 | return ($local_relname, $remote_relname, $remote_method); |
732 | } |
733 | |
734 | sub _rel_name_map { |
735 | my ($self, $relname, $method, $local_class, $local_moniker, $local_cols, |
736 | $remote_class, $remote_moniker, $remote_cols) = @_; |
737 | |
738 | my $info = { |
739 | name => $relname, |
740 | type => $method, |
741 | local_class => $local_class, |
742 | local_moniker => $local_moniker, |
743 | local_columns => $local_cols, |
744 | remote_class => $remote_class, |
745 | remote_moniker => $remote_moniker, |
746 | remote_columns => $remote_cols, |
747 | }; |
748 | |
749 | my $new_name = $relname; |
750 | |
751 | my $map = $self->rel_name_map; |
752 | my $mapped = 0; |
753 | |
754 | if ('HASH' eq ref($map)) { |
755 | my $name = $info->{name}; |
756 | my $moniker = $info->{local_moniker}; |
757 | if ($map->{$moniker} and 'HASH' eq ref($map->{$moniker}) |
758 | and $map->{$moniker}{$name} |
759 | ) { |
760 | $new_name = $map->{$moniker}{$name}; |
761 | $mapped = 1; |
762 | } |
763 | elsif ($map->{$name} and not 'HASH' eq ref($map->{$name})) { |
764 | $new_name = $map->{$name}; |
765 | $mapped = 1; |
766 | } |
767 | } |
768 | elsif ('CODE' eq ref($map)) { |
769 | my $name = $map->($info); |
770 | if ($name) { |
771 | $new_name = $name; |
772 | $mapped = 1; |
773 | } |
774 | } |
775 | |
776 | return ($new_name, $mapped); |
fa6f8d4e |
777 | } |
778 | |
dc379dc6 |
779 | sub _cleanup { |
1ad8e8c3 |
780 | my $self = shift; |
781 | |
782 | for my $class (@{ $self->_temp_classes }) { |
783 | Class::Unload->unload($class); |
784 | } |
785 | |
786 | $self->_temp_classes([]); |
787 | } |
788 | |
be80bba7 |
789 | =head1 AUTHOR |
790 | |
9cc8e7e1 |
791 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
792 | |
793 | =head1 LICENSE |
794 | |
795 | This library is free software; you can redistribute it and/or modify it under |
796 | the same terms as Perl itself. |
797 | |
798 | =cut |
799 | |
996be9ee |
800 | 1; |
19b7d71c |
801 | # vim:et sts=4 sw=4 tw=0: |