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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'; |
39b22ca9 |
9 | use Lingua::EN::Inflect::Phrase (); |
dc379dc6 |
10 | use Lingua::EN::Tagger (); |
cc4f11a2 |
11 | use DBIx::Class::Schema::Loader::Utils 'split_name'; |
dc96667a |
12 | use File::Slurp 'read_file'; |
1ad8e8c3 |
13 | use Try::Tiny; |
14 | use Class::Unload (); |
8c70d2c7 |
15 | use Class::Inspector (); |
1ad8e8c3 |
16 | use List::MoreUtils 'apply'; |
17 | use namespace::clean; |
996be9ee |
18 | |
4295c4b4 |
19 | our $VERSION = '0.07010'; |
32f784fc |
20 | |
6e4b7bb1 |
21 | # Glossary: |
22 | # |
23 | # remote_relname -- name of relationship from the local table referring to the remote table |
24 | # local_relname -- name of relationship from the remote table referring to the local table |
25 | # remote_method -- relationship type from remote table to local table, usually has_many |
26 | |
996be9ee |
27 | =head1 NAME |
28 | |
29 | DBIx::Class::Schema::Loader::RelBuilder - Builds relationships for DBIx::Class::Schema::Loader |
30 | |
31 | =head1 SYNOPSIS |
32 | |
19b7d71c |
33 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
996be9ee |
34 | |
35 | =head1 DESCRIPTION |
36 | |
37 | This class builds relationships for L<DBIx::Class::Schema::Loader>. This |
38 | is module is not (yet) for external use. |
39 | |
40 | =head1 METHODS |
41 | |
42 | =head2 new |
43 | |
4c7b5f46 |
44 | Arguments: $base object |
996be9ee |
45 | |
46 | =head2 generate_code |
47 | |
dc379dc6 |
48 | Arguments: |
49 | |
50 | { |
51 | local_moniker (scalar) => [ fk_info (arrayref), uniq_info (arrayref) ] |
52 | ... |
53 | } |
e8ad6491 |
54 | |
dc379dc6 |
55 | This generates the code for the relationships of each table. |
e8ad6491 |
56 | |
57 | C<local_moniker> is the moniker name of the table which had the REFERENCES |
58 | statements. The fk_info arrayref's contents should take the form: |
59 | |
60 | [ |
61 | { |
62 | local_columns => [ 'col2', 'col3' ], |
63 | remote_columns => [ 'col5', 'col7' ], |
64 | remote_moniker => 'AnotherTableMoniker', |
65 | }, |
66 | { |
67 | local_columns => [ 'col1', 'col4' ], |
68 | remote_columns => [ 'col1', 'col2' ], |
69 | remote_moniker => 'YetAnotherTableMoniker', |
70 | }, |
71 | # ... |
72 | ], |
73 | |
dc379dc6 |
74 | The uniq_info arrayref's contents should take the form: |
75 | |
76 | [ |
77 | [ |
78 | uniq_constraint_name => [ 'col1', 'col2' ], |
79 | ], |
80 | [ |
81 | another_uniq_constraint_name => [ 'col1', 'col2' ], |
82 | ], |
83 | ], |
84 | |
e8ad6491 |
85 | This method will return the generated relationships as a hashref keyed on the |
86 | class names. The values are arrayrefs of hashes containing method name and |
87 | arguments, like so: |
996be9ee |
88 | |
89 | { |
90 | 'Some::Source::Class' => [ |
b97c2c1e |
91 | { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ], |
92 | { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ], |
996be9ee |
93 | ], |
94 | 'Another::Source::Class' => [ |
95 | # ... |
96 | ], |
97 | # ... |
98 | } |
8f9d7ce5 |
99 | |
996be9ee |
100 | =cut |
101 | |
1ad8e8c3 |
102 | __PACKAGE__->mk_group_accessors('simple', qw/ |
103 | base |
104 | schema |
105 | inflect_plural |
106 | inflect_singular |
107 | relationship_attrs |
a7116285 |
108 | rel_collision_map |
1ad8e8c3 |
109 | _temp_classes |
dc379dc6 |
110 | __tagger |
1ad8e8c3 |
111 | /); |
4c7b5f46 |
112 | |
996be9ee |
113 | sub new { |
4c7b5f46 |
114 | my ( $class, $base ) = @_; |
115 | |
116 | # from old POD about this constructor: |
117 | # C<$schema_class> should be a schema class name, where the source |
118 | # classes have already been set up and registered. Column info, |
119 | # primary key, and unique constraints will be drawn from this |
120 | # schema for all of the existing source monikers. |
121 | |
122 | # Options inflect_plural and inflect_singular are optional, and |
123 | # are better documented in L<DBIx::Class::Schema::Loader::Base>. |
996be9ee |
124 | |
125 | my $self = { |
4c7b5f46 |
126 | base => $base, |
127 | schema => $base->schema, |
128 | inflect_plural => $base->inflect_plural, |
129 | inflect_singular => $base->inflect_singular, |
130 | relationship_attrs => $base->relationship_attrs, |
a7116285 |
131 | rel_collision_map => $base->rel_collision_map, |
1ad8e8c3 |
132 | _temp_classes => [], |
996be9ee |
133 | }; |
134 | |
1ad8e8c3 |
135 | weaken $self->{base}; #< don't leak |
136 | |
137 | bless $self => $class; |
4c7b5f46 |
138 | |
c8c27020 |
139 | # validate the relationship_attrs arg |
1ad8e8c3 |
140 | if( defined $self->relationship_attrs ) { |
141 | ref $self->relationship_attrs eq 'HASH' |
c8c27020 |
142 | or croak "relationship_attrs must be a hashref"; |
143 | } |
996be9ee |
144 | |
1ad8e8c3 |
145 | return $self; |
996be9ee |
146 | } |
147 | |
148 | |
149 | # pluralize a relationship name |
150 | sub _inflect_plural { |
ecf930e6 |
151 | my ($self, $relname) = @_; |
996be9ee |
152 | |
39ef3bfe |
153 | return '' if !defined $relname || $relname eq ''; |
154 | |
1ad8e8c3 |
155 | if( ref $self->inflect_plural eq 'HASH' ) { |
156 | return $self->inflect_plural->{$relname} |
157 | if exists $self->inflect_plural->{$relname}; |
996be9ee |
158 | } |
1ad8e8c3 |
159 | elsif( ref $self->inflect_plural eq 'CODE' ) { |
160 | my $inflected = $self->inflect_plural->($relname); |
996be9ee |
161 | return $inflected if $inflected; |
162 | } |
163 | |
ecf930e6 |
164 | return $self->_to_PL($relname); |
996be9ee |
165 | } |
166 | |
167 | # Singularize a relationship name |
168 | sub _inflect_singular { |
ecf930e6 |
169 | my ($self, $relname) = @_; |
996be9ee |
170 | |
39ef3bfe |
171 | return '' if !defined $relname || $relname eq ''; |
172 | |
1ad8e8c3 |
173 | if( ref $self->inflect_singular eq 'HASH' ) { |
174 | return $self->inflect_singular->{$relname} |
175 | if exists $self->inflect_singular->{$relname}; |
996be9ee |
176 | } |
1ad8e8c3 |
177 | elsif( ref $self->inflect_singular eq 'CODE' ) { |
178 | my $inflected = $self->inflect_singular->($relname); |
996be9ee |
179 | return $inflected if $inflected; |
180 | } |
181 | |
ecf930e6 |
182 | return $self->_to_S($relname); |
c496748b |
183 | } |
184 | |
185 | sub _to_PL { |
186 | my ($self, $name) = @_; |
187 | |
188 | $name =~ s/_/ /g; |
39b22ca9 |
189 | my $plural = Lingua::EN::Inflect::Phrase::to_PL($name); |
c496748b |
190 | $plural =~ s/ /_/g; |
191 | |
192 | return $plural; |
193 | } |
194 | |
c496748b |
195 | sub _to_S { |
196 | my ($self, $name) = @_; |
197 | |
39b22ca9 |
198 | $name =~ s/_/ /g; |
199 | my $singular = Lingua::EN::Inflect::Phrase::to_S($name); |
200 | $singular =~ s/ /_/g; |
201 | |
202 | return $singular; |
996be9ee |
203 | } |
204 | |
53ef681d |
205 | sub _default_relationship_attrs { +{ |
206 | has_many => { |
207 | cascade_delete => 0, |
208 | cascade_copy => 0, |
209 | }, |
210 | might_have => { |
211 | cascade_delete => 0, |
212 | cascade_copy => 0, |
213 | }, |
214 | belongs_to => { |
215 | on_delete => 'CASCADE', |
216 | on_update => 'CASCADE', |
aa0867ee |
217 | is_deferrable => 1, |
53ef681d |
218 | }, |
219 | } } |
220 | |
c8c27020 |
221 | # accessor for options to be passed to each generated relationship |
222 | # type. take single argument, the relationship type name, and returns |
223 | # either a hashref (if some options are set), or nothing |
224 | sub _relationship_attrs { |
225 | my ( $self, $reltype ) = @_; |
1ad8e8c3 |
226 | my $r = $self->relationship_attrs; |
c8c27020 |
227 | |
53ef681d |
228 | my %composite = ( |
229 | %{ $self->_default_relationship_attrs->{$reltype} || {} }, |
230 | %{ $r->{all} || {} } |
231 | ); |
232 | |
c8c27020 |
233 | if( my $specific = $r->{$reltype} ) { |
234 | while( my ($k,$v) = each %$specific ) { |
235 | $composite{$k} = $v; |
236 | } |
237 | } |
238 | return \%composite; |
239 | } |
240 | |
26f1c8c9 |
241 | sub _array_eq { |
ecf930e6 |
242 | my ($self, $a, $b) = @_; |
26f1c8c9 |
243 | |
244 | return unless @$a == @$b; |
245 | |
246 | for (my $i = 0; $i < @$a; $i++) { |
247 | return unless $a->[$i] eq $b->[$i]; |
248 | } |
249 | return 1; |
250 | } |
251 | |
c39e403e |
252 | sub _remote_attrs { |
c496748b |
253 | my ($self, $local_moniker, $local_cols) = @_; |
c39e403e |
254 | |
c496748b |
255 | # get our base set of attrs from _relationship_attrs, if present |
256 | my $attrs = $self->_relationship_attrs('belongs_to') || {}; |
c8c27020 |
257 | |
c496748b |
258 | # If the referring column is nullable, make 'belongs_to' an |
259 | # outer join, unless explicitly set by relationship_attrs |
1ad8e8c3 |
260 | my $nullable = grep { $self->schema->source($local_moniker)->column_info($_)->{is_nullable} } @$local_cols; |
c496748b |
261 | $attrs->{join_type} = 'LEFT' if $nullable && !defined $attrs->{join_type}; |
c39e403e |
262 | |
c496748b |
263 | return $attrs; |
c39e403e |
264 | } |
265 | |
414c61a0 |
266 | sub _sanitize_name { |
267 | my ($self, $name) = @_; |
268 | |
269 | if (ref $name) { |
270 | # scalar ref for weird table name (like one containing a '.') |
271 | ($name = $$name) =~ s/\W+/_/g; |
272 | } |
273 | else { |
274 | # remove 'schema.' prefix if any |
275 | $name =~ s/^[^.]+\.//; |
276 | } |
277 | |
278 | return $name; |
279 | } |
280 | |
19b7d71c |
281 | sub _normalize_name { |
282 | my ($self, $name) = @_; |
283 | |
414c61a0 |
284 | $name = $self->_sanitize_name($name); |
285 | |
cc4f11a2 |
286 | my @words = split_name $name; |
19b7d71c |
287 | |
288 | return join '_', map lc, @words; |
289 | } |
290 | |
f2fc8d01 |
291 | sub _remote_relname { |
292 | my ($self, $remote_table, $cond) = @_; |
293 | |
294 | my $remote_relname; |
295 | # for single-column case, set the remote relname to the column |
296 | # name, to make filter accessors work, but strip trailing _id |
297 | if(scalar keys %{$cond} == 1) { |
298 | my ($col) = values %{$cond}; |
19b7d71c |
299 | $col = $self->_normalize_name($col); |
f2fc8d01 |
300 | $col =~ s/_id$//; |
301 | $remote_relname = $self->_inflect_singular($col); |
302 | } |
303 | else { |
19b7d71c |
304 | $remote_relname = $self->_inflect_singular($self->_normalize_name($remote_table)); |
f2fc8d01 |
305 | } |
306 | |
307 | return $remote_relname; |
308 | } |
309 | |
a7116285 |
310 | sub _resolve_relname_collision { |
311 | my ($self, $moniker, $cols, $relname) = @_; |
312 | |
313 | return $relname if $relname eq 'id'; # this shouldn't happen, but just in case |
314 | |
dc379dc6 |
315 | my $table = $self->base->tables->{$moniker}; |
316 | |
317 | if ($self->base->_is_result_class_method($relname, $table)) { |
a7116285 |
318 | if (my $map = $self->rel_collision_map) { |
319 | for my $re (keys %$map) { |
320 | if (my @matches = $relname =~ /$re/) { |
321 | return sprintf $map->{$re}, @matches; |
322 | } |
323 | } |
324 | } |
325 | |
326 | my $new_relname = $relname; |
dc379dc6 |
327 | while ($self->base->_is_result_class_method($new_relname, $table)) { |
a7116285 |
328 | $new_relname .= '_rel' |
329 | } |
330 | |
331 | warn <<"EOF"; |
332 | Relationship '$relname' in source '$moniker' for columns '@{[ join ',', @$cols ]}' collides with an inherited method. |
333 | Renaming to '$new_relname'. |
334 | See "RELATIONSHIP NAME COLLISIONS" in perldoc DBIx::Class::Schema::Loader::Base . |
335 | EOF |
336 | |
337 | return $new_relname; |
338 | } |
339 | |
340 | return $relname; |
341 | } |
342 | |
996be9ee |
343 | sub generate_code { |
dc379dc6 |
344 | my ($self, $tables) = @_; |
345 | |
346 | # make a copy to destroy |
347 | my @tables = @$tables; |
996be9ee |
348 | |
349 | my $all_code = {}; |
350 | |
dc379dc6 |
351 | while (my ($local_moniker, $rels, $uniqs) = @{ shift @tables || [] }) { |
352 | my $local_class = $self->schema->class($local_moniker); |
057fbb08 |
353 | |
dc379dc6 |
354 | my %counters; |
355 | foreach my $rel (@$rels) { |
356 | next if !$rel->{remote_source}; |
357 | $counters{$rel->{remote_source}}++; |
358 | } |
e8ad6491 |
359 | |
dc379dc6 |
360 | foreach my $rel (@$rels) { |
361 | my $remote_moniker = $rel->{remote_source} |
362 | or next; |
057fbb08 |
363 | |
dc379dc6 |
364 | my $remote_class = $self->schema->class($remote_moniker); |
365 | my $remote_obj = $self->schema->source($remote_moniker); |
366 | my $remote_cols = $rel->{remote_columns} || [ $remote_obj->primary_columns ]; |
057fbb08 |
367 | |
dc379dc6 |
368 | my $local_cols = $rel->{local_columns}; |
e8ad6491 |
369 | |
dc379dc6 |
370 | if($#$local_cols != $#$remote_cols) { |
371 | croak "Column count mismatch: $local_moniker (@$local_cols) " |
372 | . "$remote_moniker (@$remote_cols)"; |
373 | } |
996be9ee |
374 | |
dc379dc6 |
375 | my %cond; |
376 | foreach my $i (0 .. $#$local_cols) { |
377 | $cond{$remote_cols->[$i]} = $local_cols->[$i]; |
378 | } |
379 | |
380 | my ( $local_relname, $remote_relname, $remote_method ) = |
381 | $self->_relnames_and_method( $local_moniker, $rel, \%cond, $uniqs, \%counters ); |
382 | |
383 | $remote_relname = $self->_resolve_relname_collision($local_moniker, $local_cols, $remote_relname); |
384 | $local_relname = $self->_resolve_relname_collision($remote_moniker, $remote_cols, $local_relname); |
385 | |
386 | push(@{$all_code->{$local_class}}, |
387 | { method => 'belongs_to', |
388 | args => [ $remote_relname, |
389 | $remote_class, |
390 | \%cond, |
391 | $self->_remote_attrs($local_moniker, $local_cols), |
392 | ], |
393 | extra => { |
394 | moniker => $local_moniker, |
395 | }, |
396 | } |
397 | ); |
398 | |
399 | my %rev_cond = reverse %cond; |
400 | for (keys %rev_cond) { |
401 | $rev_cond{"foreign.$_"} = "self.".$rev_cond{$_}; |
402 | delete $rev_cond{$_}; |
403 | } |
404 | |
405 | push(@{$all_code->{$remote_class}}, |
406 | { method => $remote_method, |
407 | args => [ $local_relname, |
408 | $local_class, |
409 | \%rev_cond, |
410 | $self->_relationship_attrs($remote_method), |
411 | ], |
412 | extra => { |
413 | moniker => $remote_moniker, |
414 | }, |
415 | } |
416 | ); |
e8ad6491 |
417 | } |
dc379dc6 |
418 | } |
419 | |
420 | # disambiguate rels with the same name |
421 | foreach my $class (keys %$all_code) { |
422 | my $dups = $self->_duplicates($all_code->{$class}); |
996be9ee |
423 | |
dc379dc6 |
424 | $self->_disambiguate($all_code->{$class}, $dups) if $dups; |
425 | } |
426 | |
427 | $self->_cleanup; |
428 | |
429 | return $all_code; |
430 | } |
431 | |
432 | sub _duplicates { |
433 | my ($self, $rels) = @_; |
434 | |
435 | my @rels = map [ $_->{args}[0] => $_ ], @$rels; |
436 | my %rel_names; |
437 | $rel_names{$_}++ foreach map $_->[0], @rels; |
438 | |
439 | my @dups = grep $rel_names{$_} > 1, keys %rel_names; |
440 | |
441 | my %dups; |
442 | |
443 | foreach my $dup (@dups) { |
444 | $dups{$dup} = [ map $_->[1], grep { $_->[0] eq $dup } @rels ]; |
445 | } |
446 | |
447 | return if not %dups; |
448 | |
449 | return \%dups; |
450 | } |
451 | |
452 | sub _tagger { |
453 | my $self = shift; |
454 | |
455 | $self->__tagger(Lingua::EN::Tagger->new) unless $self->__tagger; |
456 | |
457 | return $self->__tagger; |
458 | } |
7dba7c70 |
459 | |
dc379dc6 |
460 | sub _adjectives { |
461 | my ($self, @cols) = @_; |
a7116285 |
462 | |
dc379dc6 |
463 | my @adjectives; |
464 | |
465 | foreach my $col (@cols) { |
466 | my @words = split_name $col; |
467 | |
468 | my $tagged = $self->_tagger->get_readable(join ' ', @words); |
469 | |
470 | push @adjectives, $tagged =~ m{\G(\w+)/JJ\s+}g; |
471 | } |
472 | |
473 | return @adjectives; |
474 | } |
475 | |
476 | sub _disambiguate { |
477 | my ($self, $all_rels, $dups) = @_; |
478 | |
479 | foreach my $dup (keys %$dups) { |
480 | my @rels = @{ $dups->{$dup} }; |
481 | |
482 | foreach my $rel (@rels) { |
483 | next if $rel->{method} eq 'belongs_to'; |
484 | |
485 | my @to_cols = apply { s/^foreign\.//i } |
486 | keys %{ $rel->{args}[2] }; |
487 | |
488 | my @adjectives = $self->_adjectives(@to_cols); |
489 | |
490 | # If there are no adjectives, and there is only one might_have |
491 | # rel to that class, we hardcode 'active'. |
492 | |
493 | my $to_class = $rel->{args}[1]; |
494 | |
495 | if ((not @adjectives) |
496 | && (grep { $_->{method} eq 'might_have' |
497 | && $_->{args}[1] eq $to_class } @$all_rels) == 1) { |
498 | |
499 | @adjectives = 'active'; |
996be9ee |
500 | } |
e8ad6491 |
501 | |
dc379dc6 |
502 | if (@adjectives) { |
503 | my $rel_name = join '_', sort(@adjectives), $rel->{args}[0]; |
504 | |
505 | $rel_name = $rel->{method} eq 'might_have' ? |
506 | $self->_inflect_singular($rel_name) |
507 | : |
508 | $self->_inflect_plural($rel_name); |
509 | |
510 | my $moniker = $rel->{extra}{moniker}; |
511 | |
512 | my @from_cols = apply { s/^self\.//i } |
513 | values %{ $rel->{args}[2] }; |
057fbb08 |
514 | |
dc379dc6 |
515 | $rel_name = $self->_resolve_relname_collision($moniker, \@from_cols, $rel_name); |
516 | |
517 | $rel->{args}[0] = $rel_name; |
e8ad6491 |
518 | } |
dc379dc6 |
519 | } |
996be9ee |
520 | } |
521 | |
dc379dc6 |
522 | # Check again for duplicates, since the heuristics above may not have resolved them all. |
523 | |
524 | if ($dups = $self->_duplicates($all_rels)) { |
525 | foreach my $dup (keys %$dups) { |
526 | # sort by method |
527 | my @rels = map $_->[1], sort { $a->[0] <=> $b->[0] } map [ |
528 | ($_->{method} eq 'belongs_to' ? 3 : $_->{method} eq 'has_many' ? 2 : 1), $_ |
529 | ], @{ $dups->{$dup} }; |
530 | |
531 | my $rel_num = 2; |
532 | |
533 | foreach my $rel (@rels[1 .. $#rels]) { |
534 | my $inflect_type = $rel->{method} eq 'has_many' ? |
535 | 'inflect_plural' |
536 | : |
537 | 'inflect_singular'; |
538 | |
539 | my $inflect_method = "_$inflect_type"; |
540 | |
541 | my $relname_new_uninflected = |
542 | $self->_inflect_singular($rel->{args}[0]) . "_$rel_num"; |
543 | |
544 | $rel_num++; |
545 | |
546 | my $relname_new = $self->$inflect_method($relname_new_uninflected); |
547 | |
548 | my $moniker = $rel->{extra}{moniker}; |
549 | |
550 | my @from_cols = apply { s/^self\.//i } |
551 | values %{ $rel->{args}[2] }; |
552 | |
553 | warn <<"EOF"; |
554 | Could not find a proper name for relationship '$relname_new' in source '$moniker' for columns '@{[ join ',', @from_cols ]}'. |
555 | Supply a value in '$inflect_type' for '$relname_new_uninflected' to name this relationship. |
556 | EOF |
557 | |
aa608e1a |
558 | $relname_new = $self->_resolve_relname_collision($moniker, \@from_cols, $relname_new); |
559 | |
dc379dc6 |
560 | $rel->{args}[0] = $relname_new; |
561 | } |
562 | } |
563 | } |
996be9ee |
564 | } |
565 | |
39ef3bfe |
566 | sub _relnames_and_method { |
057fbb08 |
567 | my ( $self, $local_moniker, $rel, $cond, $uniqs, $counters ) = @_; |
e9c09ed9 |
568 | |
057fbb08 |
569 | my $remote_moniker = $rel->{remote_source}; |
1ad8e8c3 |
570 | my $remote_obj = $self->schema->source( $remote_moniker ); |
571 | my $remote_class = $self->schema->class( $remote_moniker ); |
ecf930e6 |
572 | my $remote_relname = $self->_remote_relname( $remote_obj->from, $cond); |
fa6f8d4e |
573 | |
1ad8e8c3 |
574 | my $local_cols = $rel->{local_columns}; |
575 | my $local_table = $self->schema->source($local_moniker)->from; |
576 | my $local_class = $self->schema->class($local_moniker); |
577 | my $local_source = $self->schema->source($local_moniker); |
057fbb08 |
578 | |
1ad8e8c3 |
579 | my $local_relname_uninflected = $self->_normalize_name($local_table); |
580 | my $local_relname = $self->_inflect_plural($self->_normalize_name($local_table)); |
fa6f8d4e |
581 | |
057fbb08 |
582 | my $remote_method = 'has_many'; |
583 | |
584 | # If the local columns have a UNIQUE constraint, this is a one-to-one rel |
ecf930e6 |
585 | if ($self->_array_eq([ $local_source->primary_columns ], $local_cols) || |
586 | grep { $self->_array_eq($_->[1], $local_cols) } @$uniqs) { |
057fbb08 |
587 | $remote_method = 'might_have'; |
c496748b |
588 | $local_relname = $self->_inflect_singular($local_relname_uninflected); |
057fbb08 |
589 | } |
fa6f8d4e |
590 | |
1ad8e8c3 |
591 | # If more than one rel between this pair of tables, use the local |
592 | # col names to distinguish, unless the rel was created previously. |
593 | if ($counters->{$remote_moniker} > 1) { |
594 | my $relationship_exists = 0; |
595 | |
6e4b7bb1 |
596 | if (-f (my $existing_remote_file = $self->base->get_dump_filename($remote_class))) { |
1ad8e8c3 |
597 | my $class = "${remote_class}Temporary"; |
598 | |
8c70d2c7 |
599 | if (not Class::Inspector->loaded($class)) { |
dc96667a |
600 | my $code = read_file($existing_remote_file, binmode => ':encoding(UTF-8)'); |
1ad8e8c3 |
601 | |
602 | $code =~ s/(?<=package $remote_class)/Temporary/g; |
603 | |
6e4b7bb1 |
604 | $code =~ s/__PACKAGE__->meta->make_immutable[^;]*;//g; |
1ad8e8c3 |
605 | |
606 | eval $code; |
607 | die $@ if $@; |
608 | |
609 | push @{ $self->_temp_classes }, $class; |
610 | } |
611 | |
612 | if ($class->has_relationship($local_relname)) { |
613 | my $rel_cols = [ sort { $a cmp $b } apply { s/^foreign\.//i } |
614 | (keys %{ $class->relationship_info($local_relname)->{cond} }) ]; |
615 | |
616 | $relationship_exists = 1 if $self->_array_eq([ sort @$local_cols ], $rel_cols); |
617 | } |
618 | } |
619 | |
620 | if (not $relationship_exists) { |
621 | my $colnames = q{_} . $self->_normalize_name(join '_', @$local_cols); |
622 | $remote_relname .= $colnames if keys %$cond > 1; |
623 | |
624 | $local_relname = $self->_normalize_name($local_table . $colnames); |
625 | $local_relname =~ s/_id$//; |
626 | |
627 | $local_relname_uninflected = $local_relname; |
628 | $local_relname = $self->_inflect_plural($local_relname); |
629 | |
630 | # if colnames were added and this is a might_have, re-inflect |
631 | if ($remote_method eq 'might_have') { |
632 | $local_relname = $self->_inflect_singular($local_relname_uninflected); |
633 | } |
634 | } |
635 | } |
636 | |
057fbb08 |
637 | return ( $local_relname, $remote_relname, $remote_method ); |
fa6f8d4e |
638 | } |
639 | |
dc379dc6 |
640 | sub _cleanup { |
1ad8e8c3 |
641 | my $self = shift; |
642 | |
643 | for my $class (@{ $self->_temp_classes }) { |
644 | Class::Unload->unload($class); |
645 | } |
646 | |
647 | $self->_temp_classes([]); |
648 | } |
649 | |
be80bba7 |
650 | =head1 AUTHOR |
651 | |
9cc8e7e1 |
652 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
653 | |
654 | =head1 LICENSE |
655 | |
656 | This library is free software; you can redistribute it and/or modify it under |
657 | the same terms as Perl itself. |
658 | |
659 | =cut |
660 | |
996be9ee |
661 | 1; |
19b7d71c |
662 | # vim:et sts=4 sw=4 tw=0: |