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'; |
39b22ca9 |
9 | use Lingua::EN::Inflect::Phrase (); |
dc379dc6 |
10 | use Lingua::EN::Tagger (); |
cc4f11a2 |
11 | use DBIx::Class::Schema::Loader::Utils 'split_name'; |
1ad8e8c3 |
12 | use File::Slurp 'slurp'; |
13 | use Try::Tiny; |
14 | use Class::Unload (); |
8c70d2c7 |
15 | use Class::Inspector (); |
1ad8e8c3 |
16 | use List::MoreUtils 'apply'; |
af15ea33 |
17 | use Encode 'decode'; |
1ad8e8c3 |
18 | use namespace::clean; |
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 | |
4c7b5f46 |
45 | Arguments: $base object |
996be9ee |
46 | |
47 | =head2 generate_code |
48 | |
dc379dc6 |
49 | Arguments: |
50 | |
51 | { |
52 | local_moniker (scalar) => [ fk_info (arrayref), uniq_info (arrayref) ] |
53 | ... |
54 | } |
e8ad6491 |
55 | |
dc379dc6 |
56 | This generates the code for the relationships of each table. |
e8ad6491 |
57 | |
58 | C<local_moniker> is the moniker name of the table which had the REFERENCES |
59 | statements. The fk_info arrayref's contents should take the form: |
60 | |
61 | [ |
62 | { |
63 | local_columns => [ 'col2', 'col3' ], |
64 | remote_columns => [ 'col5', 'col7' ], |
65 | remote_moniker => 'AnotherTableMoniker', |
66 | }, |
67 | { |
68 | local_columns => [ 'col1', 'col4' ], |
69 | remote_columns => [ 'col1', 'col2' ], |
70 | remote_moniker => 'YetAnotherTableMoniker', |
71 | }, |
72 | # ... |
73 | ], |
74 | |
dc379dc6 |
75 | The uniq_info arrayref's contents should take the form: |
76 | |
77 | [ |
78 | [ |
79 | uniq_constraint_name => [ 'col1', 'col2' ], |
80 | ], |
81 | [ |
82 | another_uniq_constraint_name => [ 'col1', 'col2' ], |
83 | ], |
84 | ], |
85 | |
e8ad6491 |
86 | This method will return the generated relationships as a hashref keyed on the |
87 | class names. The values are arrayrefs of hashes containing method name and |
88 | arguments, like so: |
996be9ee |
89 | |
90 | { |
91 | 'Some::Source::Class' => [ |
b97c2c1e |
92 | { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ], |
93 | { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ], |
996be9ee |
94 | ], |
95 | 'Another::Source::Class' => [ |
96 | # ... |
97 | ], |
98 | # ... |
99 | } |
8f9d7ce5 |
100 | |
996be9ee |
101 | =cut |
102 | |
1ad8e8c3 |
103 | __PACKAGE__->mk_group_accessors('simple', qw/ |
104 | base |
105 | schema |
106 | inflect_plural |
107 | inflect_singular |
108 | relationship_attrs |
a7116285 |
109 | rel_collision_map |
1ad8e8c3 |
110 | _temp_classes |
dc379dc6 |
111 | __tagger |
1ad8e8c3 |
112 | /); |
4c7b5f46 |
113 | |
996be9ee |
114 | sub new { |
4c7b5f46 |
115 | my ( $class, $base ) = @_; |
116 | |
117 | # from old POD about this constructor: |
118 | # C<$schema_class> should be a schema class name, where the source |
119 | # classes have already been set up and registered. Column info, |
120 | # primary key, and unique constraints will be drawn from this |
121 | # schema for all of the existing source monikers. |
122 | |
123 | # Options inflect_plural and inflect_singular are optional, and |
124 | # are better documented in L<DBIx::Class::Schema::Loader::Base>. |
996be9ee |
125 | |
126 | my $self = { |
4c7b5f46 |
127 | base => $base, |
128 | schema => $base->schema, |
129 | inflect_plural => $base->inflect_plural, |
130 | inflect_singular => $base->inflect_singular, |
131 | relationship_attrs => $base->relationship_attrs, |
a7116285 |
132 | rel_collision_map => $base->rel_collision_map, |
1ad8e8c3 |
133 | _temp_classes => [], |
996be9ee |
134 | }; |
135 | |
1ad8e8c3 |
136 | weaken $self->{base}; #< don't leak |
137 | |
138 | bless $self => $class; |
4c7b5f46 |
139 | |
c8c27020 |
140 | # validate the relationship_attrs arg |
1ad8e8c3 |
141 | if( defined $self->relationship_attrs ) { |
142 | ref $self->relationship_attrs eq 'HASH' |
c8c27020 |
143 | or croak "relationship_attrs must be a hashref"; |
144 | } |
996be9ee |
145 | |
1ad8e8c3 |
146 | return $self; |
996be9ee |
147 | } |
148 | |
149 | |
150 | # pluralize a relationship name |
151 | sub _inflect_plural { |
ecf930e6 |
152 | my ($self, $relname) = @_; |
996be9ee |
153 | |
39ef3bfe |
154 | return '' if !defined $relname || $relname eq ''; |
155 | |
1ad8e8c3 |
156 | if( ref $self->inflect_plural eq 'HASH' ) { |
157 | return $self->inflect_plural->{$relname} |
158 | if exists $self->inflect_plural->{$relname}; |
996be9ee |
159 | } |
1ad8e8c3 |
160 | elsif( ref $self->inflect_plural eq 'CODE' ) { |
161 | my $inflected = $self->inflect_plural->($relname); |
996be9ee |
162 | return $inflected if $inflected; |
163 | } |
164 | |
ecf930e6 |
165 | return $self->_to_PL($relname); |
996be9ee |
166 | } |
167 | |
168 | # Singularize a relationship name |
169 | sub _inflect_singular { |
ecf930e6 |
170 | my ($self, $relname) = @_; |
996be9ee |
171 | |
39ef3bfe |
172 | return '' if !defined $relname || $relname eq ''; |
173 | |
1ad8e8c3 |
174 | if( ref $self->inflect_singular eq 'HASH' ) { |
175 | return $self->inflect_singular->{$relname} |
176 | if exists $self->inflect_singular->{$relname}; |
996be9ee |
177 | } |
1ad8e8c3 |
178 | elsif( ref $self->inflect_singular eq 'CODE' ) { |
179 | my $inflected = $self->inflect_singular->($relname); |
996be9ee |
180 | return $inflected if $inflected; |
181 | } |
182 | |
ecf930e6 |
183 | return $self->_to_S($relname); |
c496748b |
184 | } |
185 | |
186 | sub _to_PL { |
187 | my ($self, $name) = @_; |
188 | |
189 | $name =~ s/_/ /g; |
39b22ca9 |
190 | my $plural = Lingua::EN::Inflect::Phrase::to_PL($name); |
c496748b |
191 | $plural =~ s/ /_/g; |
192 | |
193 | return $plural; |
194 | } |
195 | |
c496748b |
196 | sub _to_S { |
197 | my ($self, $name) = @_; |
198 | |
39b22ca9 |
199 | $name =~ s/_/ /g; |
200 | my $singular = Lingua::EN::Inflect::Phrase::to_S($name); |
201 | $singular =~ s/ /_/g; |
202 | |
203 | return $singular; |
996be9ee |
204 | } |
205 | |
53ef681d |
206 | sub _default_relationship_attrs { +{ |
207 | has_many => { |
208 | cascade_delete => 0, |
209 | cascade_copy => 0, |
210 | }, |
211 | might_have => { |
212 | cascade_delete => 0, |
213 | cascade_copy => 0, |
214 | }, |
215 | belongs_to => { |
216 | on_delete => 'CASCADE', |
217 | on_update => 'CASCADE', |
aa0867ee |
218 | is_deferrable => 1, |
53ef681d |
219 | }, |
220 | } } |
221 | |
c8c27020 |
222 | # accessor for options to be passed to each generated relationship |
223 | # type. take single argument, the relationship type name, and returns |
224 | # either a hashref (if some options are set), or nothing |
225 | sub _relationship_attrs { |
226 | my ( $self, $reltype ) = @_; |
1ad8e8c3 |
227 | my $r = $self->relationship_attrs; |
c8c27020 |
228 | |
53ef681d |
229 | my %composite = ( |
230 | %{ $self->_default_relationship_attrs->{$reltype} || {} }, |
231 | %{ $r->{all} || {} } |
232 | ); |
233 | |
c8c27020 |
234 | if( my $specific = $r->{$reltype} ) { |
235 | while( my ($k,$v) = each %$specific ) { |
236 | $composite{$k} = $v; |
237 | } |
238 | } |
239 | return \%composite; |
240 | } |
241 | |
26f1c8c9 |
242 | sub _array_eq { |
ecf930e6 |
243 | my ($self, $a, $b) = @_; |
26f1c8c9 |
244 | |
245 | return unless @$a == @$b; |
246 | |
247 | for (my $i = 0; $i < @$a; $i++) { |
248 | return unless $a->[$i] eq $b->[$i]; |
249 | } |
250 | return 1; |
251 | } |
252 | |
c39e403e |
253 | sub _remote_attrs { |
c496748b |
254 | my ($self, $local_moniker, $local_cols) = @_; |
c39e403e |
255 | |
c496748b |
256 | # get our base set of attrs from _relationship_attrs, if present |
257 | my $attrs = $self->_relationship_attrs('belongs_to') || {}; |
c8c27020 |
258 | |
c496748b |
259 | # If the referring column is nullable, make 'belongs_to' an |
260 | # outer join, unless explicitly set by relationship_attrs |
1ad8e8c3 |
261 | my $nullable = grep { $self->schema->source($local_moniker)->column_info($_)->{is_nullable} } @$local_cols; |
c496748b |
262 | $attrs->{join_type} = 'LEFT' if $nullable && !defined $attrs->{join_type}; |
c39e403e |
263 | |
c496748b |
264 | return $attrs; |
c39e403e |
265 | } |
266 | |
414c61a0 |
267 | sub _sanitize_name { |
268 | my ($self, $name) = @_; |
269 | |
270 | if (ref $name) { |
271 | # scalar ref for weird table name (like one containing a '.') |
272 | ($name = $$name) =~ s/\W+/_/g; |
273 | } |
274 | else { |
275 | # remove 'schema.' prefix if any |
276 | $name =~ s/^[^.]+\.//; |
277 | } |
278 | |
279 | return $name; |
280 | } |
281 | |
19b7d71c |
282 | sub _normalize_name { |
283 | my ($self, $name) = @_; |
284 | |
414c61a0 |
285 | $name = $self->_sanitize_name($name); |
286 | |
cc4f11a2 |
287 | my @words = split_name $name; |
19b7d71c |
288 | |
289 | return join '_', map lc, @words; |
290 | } |
291 | |
f2fc8d01 |
292 | sub _remote_relname { |
293 | my ($self, $remote_table, $cond) = @_; |
294 | |
295 | my $remote_relname; |
296 | # for single-column case, set the remote relname to the column |
297 | # name, to make filter accessors work, but strip trailing _id |
298 | if(scalar keys %{$cond} == 1) { |
299 | my ($col) = values %{$cond}; |
19b7d71c |
300 | $col = $self->_normalize_name($col); |
f2fc8d01 |
301 | $col =~ s/_id$//; |
302 | $remote_relname = $self->_inflect_singular($col); |
303 | } |
304 | else { |
19b7d71c |
305 | $remote_relname = $self->_inflect_singular($self->_normalize_name($remote_table)); |
f2fc8d01 |
306 | } |
307 | |
308 | return $remote_relname; |
309 | } |
310 | |
a7116285 |
311 | sub _resolve_relname_collision { |
312 | my ($self, $moniker, $cols, $relname) = @_; |
313 | |
314 | return $relname if $relname eq 'id'; # this shouldn't happen, but just in case |
315 | |
dc379dc6 |
316 | my $table = $self->base->tables->{$moniker}; |
317 | |
318 | if ($self->base->_is_result_class_method($relname, $table)) { |
a7116285 |
319 | if (my $map = $self->rel_collision_map) { |
320 | for my $re (keys %$map) { |
321 | if (my @matches = $relname =~ /$re/) { |
322 | return sprintf $map->{$re}, @matches; |
323 | } |
324 | } |
325 | } |
326 | |
327 | my $new_relname = $relname; |
dc379dc6 |
328 | while ($self->base->_is_result_class_method($new_relname, $table)) { |
a7116285 |
329 | $new_relname .= '_rel' |
330 | } |
331 | |
332 | warn <<"EOF"; |
333 | Relationship '$relname' in source '$moniker' for columns '@{[ join ',', @$cols ]}' collides with an inherited method. |
334 | Renaming to '$new_relname'. |
335 | See "RELATIONSHIP NAME COLLISIONS" in perldoc DBIx::Class::Schema::Loader::Base . |
336 | EOF |
337 | |
338 | return $new_relname; |
339 | } |
340 | |
341 | return $relname; |
342 | } |
343 | |
996be9ee |
344 | sub generate_code { |
dc379dc6 |
345 | my ($self, $tables) = @_; |
346 | |
347 | # make a copy to destroy |
348 | my @tables = @$tables; |
996be9ee |
349 | |
350 | my $all_code = {}; |
351 | |
dc379dc6 |
352 | while (my ($local_moniker, $rels, $uniqs) = @{ shift @tables || [] }) { |
353 | my $local_class = $self->schema->class($local_moniker); |
057fbb08 |
354 | |
dc379dc6 |
355 | my %counters; |
356 | foreach my $rel (@$rels) { |
357 | next if !$rel->{remote_source}; |
358 | $counters{$rel->{remote_source}}++; |
359 | } |
e8ad6491 |
360 | |
dc379dc6 |
361 | foreach my $rel (@$rels) { |
362 | my $remote_moniker = $rel->{remote_source} |
363 | or next; |
057fbb08 |
364 | |
dc379dc6 |
365 | my $remote_class = $self->schema->class($remote_moniker); |
366 | my $remote_obj = $self->schema->source($remote_moniker); |
367 | my $remote_cols = $rel->{remote_columns} || [ $remote_obj->primary_columns ]; |
057fbb08 |
368 | |
dc379dc6 |
369 | my $local_cols = $rel->{local_columns}; |
e8ad6491 |
370 | |
dc379dc6 |
371 | if($#$local_cols != $#$remote_cols) { |
372 | croak "Column count mismatch: $local_moniker (@$local_cols) " |
373 | . "$remote_moniker (@$remote_cols)"; |
374 | } |
996be9ee |
375 | |
dc379dc6 |
376 | my %cond; |
377 | foreach my $i (0 .. $#$local_cols) { |
378 | $cond{$remote_cols->[$i]} = $local_cols->[$i]; |
379 | } |
380 | |
381 | my ( $local_relname, $remote_relname, $remote_method ) = |
382 | $self->_relnames_and_method( $local_moniker, $rel, \%cond, $uniqs, \%counters ); |
383 | |
384 | $remote_relname = $self->_resolve_relname_collision($local_moniker, $local_cols, $remote_relname); |
385 | $local_relname = $self->_resolve_relname_collision($remote_moniker, $remote_cols, $local_relname); |
386 | |
387 | push(@{$all_code->{$local_class}}, |
388 | { method => 'belongs_to', |
389 | args => [ $remote_relname, |
390 | $remote_class, |
391 | \%cond, |
392 | $self->_remote_attrs($local_moniker, $local_cols), |
393 | ], |
394 | extra => { |
395 | moniker => $local_moniker, |
396 | }, |
397 | } |
398 | ); |
399 | |
400 | my %rev_cond = reverse %cond; |
401 | for (keys %rev_cond) { |
402 | $rev_cond{"foreign.$_"} = "self.".$rev_cond{$_}; |
403 | delete $rev_cond{$_}; |
404 | } |
405 | |
406 | push(@{$all_code->{$remote_class}}, |
407 | { method => $remote_method, |
408 | args => [ $local_relname, |
409 | $local_class, |
410 | \%rev_cond, |
411 | $self->_relationship_attrs($remote_method), |
412 | ], |
413 | extra => { |
414 | moniker => $remote_moniker, |
415 | }, |
416 | } |
417 | ); |
e8ad6491 |
418 | } |
dc379dc6 |
419 | } |
420 | |
421 | # disambiguate rels with the same name |
422 | foreach my $class (keys %$all_code) { |
423 | my $dups = $self->_duplicates($all_code->{$class}); |
996be9ee |
424 | |
dc379dc6 |
425 | $self->_disambiguate($all_code->{$class}, $dups) if $dups; |
426 | } |
427 | |
428 | $self->_cleanup; |
429 | |
430 | return $all_code; |
431 | } |
432 | |
433 | sub _duplicates { |
434 | my ($self, $rels) = @_; |
435 | |
436 | my @rels = map [ $_->{args}[0] => $_ ], @$rels; |
437 | my %rel_names; |
438 | $rel_names{$_}++ foreach map $_->[0], @rels; |
439 | |
440 | my @dups = grep $rel_names{$_} > 1, keys %rel_names; |
441 | |
442 | my %dups; |
443 | |
444 | foreach my $dup (@dups) { |
445 | $dups{$dup} = [ map $_->[1], grep { $_->[0] eq $dup } @rels ]; |
446 | } |
447 | |
448 | return if not %dups; |
449 | |
450 | return \%dups; |
451 | } |
452 | |
453 | sub _tagger { |
454 | my $self = shift; |
455 | |
456 | $self->__tagger(Lingua::EN::Tagger->new) unless $self->__tagger; |
457 | |
458 | return $self->__tagger; |
459 | } |
7dba7c70 |
460 | |
dc379dc6 |
461 | sub _adjectives { |
462 | my ($self, @cols) = @_; |
a7116285 |
463 | |
dc379dc6 |
464 | my @adjectives; |
465 | |
466 | foreach my $col (@cols) { |
467 | my @words = split_name $col; |
468 | |
469 | my $tagged = $self->_tagger->get_readable(join ' ', @words); |
470 | |
471 | push @adjectives, $tagged =~ m{\G(\w+)/JJ\s+}g; |
472 | } |
473 | |
474 | return @adjectives; |
475 | } |
476 | |
477 | sub _disambiguate { |
478 | my ($self, $all_rels, $dups) = @_; |
479 | |
480 | foreach my $dup (keys %$dups) { |
481 | my @rels = @{ $dups->{$dup} }; |
482 | |
483 | foreach my $rel (@rels) { |
484 | next if $rel->{method} eq 'belongs_to'; |
485 | |
486 | my @to_cols = apply { s/^foreign\.//i } |
487 | keys %{ $rel->{args}[2] }; |
488 | |
489 | my @adjectives = $self->_adjectives(@to_cols); |
490 | |
491 | # If there are no adjectives, and there is only one might_have |
492 | # rel to that class, we hardcode 'active'. |
493 | |
494 | my $to_class = $rel->{args}[1]; |
495 | |
496 | if ((not @adjectives) |
497 | && (grep { $_->{method} eq 'might_have' |
498 | && $_->{args}[1] eq $to_class } @$all_rels) == 1) { |
499 | |
500 | @adjectives = 'active'; |
996be9ee |
501 | } |
e8ad6491 |
502 | |
dc379dc6 |
503 | if (@adjectives) { |
504 | my $rel_name = join '_', sort(@adjectives), $rel->{args}[0]; |
505 | |
506 | $rel_name = $rel->{method} eq 'might_have' ? |
507 | $self->_inflect_singular($rel_name) |
508 | : |
509 | $self->_inflect_plural($rel_name); |
510 | |
511 | my $moniker = $rel->{extra}{moniker}; |
512 | |
513 | my @from_cols = apply { s/^self\.//i } |
514 | values %{ $rel->{args}[2] }; |
057fbb08 |
515 | |
dc379dc6 |
516 | $rel_name = $self->_resolve_relname_collision($moniker, \@from_cols, $rel_name); |
517 | |
518 | $rel->{args}[0] = $rel_name; |
e8ad6491 |
519 | } |
dc379dc6 |
520 | } |
996be9ee |
521 | } |
522 | |
dc379dc6 |
523 | # Check again for duplicates, since the heuristics above may not have resolved them all. |
524 | |
525 | if ($dups = $self->_duplicates($all_rels)) { |
526 | foreach my $dup (keys %$dups) { |
527 | # sort by method |
528 | my @rels = map $_->[1], sort { $a->[0] <=> $b->[0] } map [ |
529 | ($_->{method} eq 'belongs_to' ? 3 : $_->{method} eq 'has_many' ? 2 : 1), $_ |
530 | ], @{ $dups->{$dup} }; |
531 | |
532 | my $rel_num = 2; |
533 | |
534 | foreach my $rel (@rels[1 .. $#rels]) { |
535 | my $inflect_type = $rel->{method} eq 'has_many' ? |
536 | 'inflect_plural' |
537 | : |
538 | 'inflect_singular'; |
539 | |
540 | my $inflect_method = "_$inflect_type"; |
541 | |
542 | my $relname_new_uninflected = |
543 | $self->_inflect_singular($rel->{args}[0]) . "_$rel_num"; |
544 | |
545 | $rel_num++; |
546 | |
547 | my $relname_new = $self->$inflect_method($relname_new_uninflected); |
548 | |
549 | my $moniker = $rel->{extra}{moniker}; |
550 | |
551 | my @from_cols = apply { s/^self\.//i } |
552 | values %{ $rel->{args}[2] }; |
553 | |
554 | warn <<"EOF"; |
555 | Could not find a proper name for relationship '$relname_new' in source '$moniker' for columns '@{[ join ',', @from_cols ]}'. |
556 | Supply a value in '$inflect_type' for '$relname_new_uninflected' to name this relationship. |
557 | EOF |
558 | |
aa608e1a |
559 | $relname_new = $self->_resolve_relname_collision($moniker, \@from_cols, $relname_new); |
560 | |
dc379dc6 |
561 | $rel->{args}[0] = $relname_new; |
562 | } |
563 | } |
564 | } |
996be9ee |
565 | } |
566 | |
39ef3bfe |
567 | sub _relnames_and_method { |
057fbb08 |
568 | my ( $self, $local_moniker, $rel, $cond, $uniqs, $counters ) = @_; |
e9c09ed9 |
569 | |
057fbb08 |
570 | my $remote_moniker = $rel->{remote_source}; |
1ad8e8c3 |
571 | my $remote_obj = $self->schema->source( $remote_moniker ); |
572 | my $remote_class = $self->schema->class( $remote_moniker ); |
ecf930e6 |
573 | my $remote_relname = $self->_remote_relname( $remote_obj->from, $cond); |
fa6f8d4e |
574 | |
1ad8e8c3 |
575 | my $local_cols = $rel->{local_columns}; |
576 | my $local_table = $self->schema->source($local_moniker)->from; |
577 | my $local_class = $self->schema->class($local_moniker); |
578 | my $local_source = $self->schema->source($local_moniker); |
057fbb08 |
579 | |
1ad8e8c3 |
580 | my $local_relname_uninflected = $self->_normalize_name($local_table); |
581 | my $local_relname = $self->_inflect_plural($self->_normalize_name($local_table)); |
fa6f8d4e |
582 | |
057fbb08 |
583 | my $remote_method = 'has_many'; |
584 | |
585 | # If the local columns have a UNIQUE constraint, this is a one-to-one rel |
ecf930e6 |
586 | if ($self->_array_eq([ $local_source->primary_columns ], $local_cols) || |
587 | grep { $self->_array_eq($_->[1], $local_cols) } @$uniqs) { |
057fbb08 |
588 | $remote_method = 'might_have'; |
c496748b |
589 | $local_relname = $self->_inflect_singular($local_relname_uninflected); |
057fbb08 |
590 | } |
fa6f8d4e |
591 | |
1ad8e8c3 |
592 | # If more than one rel between this pair of tables, use the local |
593 | # col names to distinguish, unless the rel was created previously. |
594 | if ($counters->{$remote_moniker} > 1) { |
595 | my $relationship_exists = 0; |
596 | |
6e4b7bb1 |
597 | if (-f (my $existing_remote_file = $self->base->get_dump_filename($remote_class))) { |
1ad8e8c3 |
598 | my $class = "${remote_class}Temporary"; |
599 | |
8c70d2c7 |
600 | if (not Class::Inspector->loaded($class)) { |
af15ea33 |
601 | my $code = decode 'UTF-8', scalar slurp $existing_remote_file; |
1ad8e8c3 |
602 | |
603 | $code =~ s/(?<=package $remote_class)/Temporary/g; |
604 | |
6e4b7bb1 |
605 | $code =~ s/__PACKAGE__->meta->make_immutable[^;]*;//g; |
1ad8e8c3 |
606 | |
607 | eval $code; |
608 | die $@ if $@; |
609 | |
610 | push @{ $self->_temp_classes }, $class; |
611 | } |
612 | |
613 | if ($class->has_relationship($local_relname)) { |
614 | my $rel_cols = [ sort { $a cmp $b } apply { s/^foreign\.//i } |
615 | (keys %{ $class->relationship_info($local_relname)->{cond} }) ]; |
616 | |
617 | $relationship_exists = 1 if $self->_array_eq([ sort @$local_cols ], $rel_cols); |
618 | } |
619 | } |
620 | |
621 | if (not $relationship_exists) { |
622 | my $colnames = q{_} . $self->_normalize_name(join '_', @$local_cols); |
623 | $remote_relname .= $colnames if keys %$cond > 1; |
624 | |
625 | $local_relname = $self->_normalize_name($local_table . $colnames); |
626 | $local_relname =~ s/_id$//; |
627 | |
628 | $local_relname_uninflected = $local_relname; |
629 | $local_relname = $self->_inflect_plural($local_relname); |
630 | |
631 | # if colnames were added and this is a might_have, re-inflect |
632 | if ($remote_method eq 'might_have') { |
633 | $local_relname = $self->_inflect_singular($local_relname_uninflected); |
634 | } |
635 | } |
636 | } |
637 | |
057fbb08 |
638 | return ( $local_relname, $remote_relname, $remote_method ); |
fa6f8d4e |
639 | } |
640 | |
dc379dc6 |
641 | sub _cleanup { |
1ad8e8c3 |
642 | my $self = shift; |
643 | |
644 | for my $class (@{ $self->_temp_classes }) { |
645 | Class::Unload->unload($class); |
646 | } |
647 | |
648 | $self->_temp_classes([]); |
649 | } |
650 | |
be80bba7 |
651 | =head1 AUTHOR |
652 | |
9cc8e7e1 |
653 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
654 | |
655 | =head1 LICENSE |
656 | |
657 | This library is free software; you can redistribute it and/or modify it under |
658 | the same terms as Perl itself. |
659 | |
660 | =cut |
661 | |
996be9ee |
662 | 1; |
19b7d71c |
663 | # vim:et sts=4 sw=4 tw=0: |