Commit | Line | Data |
3c5de62a |
1 | package SQL::Translator::Schema; |
2 | |
3c5de62a |
3 | =pod |
4 | |
5 | =head1 NAME |
6 | |
7 | SQL::Translator::Schema - SQL::Translator schema object |
8 | |
9 | =head1 SYNOPSIS |
10 | |
11 | use SQL::Translator::Schema; |
97382c6d |
12 | my $schema = SQL::Translator::Schema->new( |
13 | name => 'Foo', |
14 | database => 'MySQL', |
15 | ); |
16 | my $table = $schema->add_table( name => 'foo' ); |
17 | my $view = $schema->add_view( name => 'bar', sql => '...' ); |
18 | |
3c5de62a |
19 | |
20 | =head1 DESCSIPTION |
21 | |
22 | C<SQL::Translator::Schema> is the object that accepts, validates, and |
23 | returns the database structure. |
24 | |
25 | =head1 METHODS |
26 | |
27 | =cut |
28 | |
29 | use strict; |
f27f9229 |
30 | use warnings; |
9480e70b |
31 | use SQL::Translator::Schema::Constants; |
daf24e05 |
32 | use SQL::Translator::Schema::Procedure; |
3c5de62a |
33 | use SQL::Translator::Schema::Table; |
5974bee7 |
34 | use SQL::Translator::Schema::Trigger; |
3c5de62a |
35 | use SQL::Translator::Schema::View; |
4c4636ed |
36 | |
5974bee7 |
37 | use SQL::Translator::Utils 'parse_list_arg'; |
3c5de62a |
38 | |
b6a880d1 |
39 | use base 'SQL::Translator::Schema::Object'; |
d37416fd |
40 | use vars qw[ $VERSION ]; |
da06ac74 |
41 | |
11ad2df9 |
42 | $VERSION = '1.59'; |
9371be50 |
43 | |
da8ab524 |
44 | __PACKAGE__->_attributes(qw/name database translator/); |
3c5de62a |
45 | |
d37416fd |
46 | sub new { |
47 | my $class = shift; |
48 | my $self = $class->SUPER::new (@_) |
49 | or return; |
50 | |
51 | $self->{_order} = { map { $_ => 0 } qw/ |
52 | table |
53 | view |
54 | trigger |
55 | proc |
56 | /}; |
57 | |
58 | return $self; |
59 | } |
60 | |
97382c6d |
61 | sub as_graph { |
62 | |
3c5de62a |
63 | =pod |
64 | |
97382c6d |
65 | =head2 as_graph |
3c5de62a |
66 | |
97382c6d |
67 | Returns the schema as an L<SQL::Translator::Schema::Graph> object. |
3c5de62a |
68 | |
69 | =cut |
4c4636ed |
70 | require SQL::Translator::Schema::Graph; |
3c5de62a |
71 | |
da8ab524 |
72 | my $self = shift; |
4c4636ed |
73 | |
97382c6d |
74 | return SQL::Translator::Schema::Graph->new( |
da8ab524 |
75 | translator => $self->translator ); |
10f36920 |
76 | } |
77 | |
e7ca845a |
78 | sub as_graph_pm { |
79 | |
80 | =pod |
81 | |
da5a1bae |
82 | =head2 as_graph_pm |
e7ca845a |
83 | |
84 | Returns a Graph::Directed object with the table names for nodes. |
85 | |
86 | =cut |
87 | |
da5a1bae |
88 | require Graph::Directed; |
89 | |
e7ca845a |
90 | my $self = shift; |
91 | my $g = Graph::Directed->new; |
ea93df61 |
92 | |
93 | for my $table ( $self->get_tables ) { |
e7ca845a |
94 | my $tname = $table->name; |
95 | $g->add_vertex( $tname ); |
ea93df61 |
96 | |
e7ca845a |
97 | for my $field ( $table->get_fields ) { |
98 | if ( $field->is_foreign_key ) { |
99 | my $fktable = $field->foreign_key_reference->reference_table; |
100 | |
101 | $g->add_edge( $fktable, $tname ); |
102 | } |
103 | } |
104 | } |
105 | |
106 | return $g; |
107 | } |
108 | |
76dce619 |
109 | sub add_table { |
3c5de62a |
110 | |
111 | =pod |
112 | |
76dce619 |
113 | =head2 add_table |
3c5de62a |
114 | |
76dce619 |
115 | Add a table object. Returns the new SQL::Translator::Schema::Table object. |
99248301 |
116 | The "name" parameter is required. If you try to create a table with the |
ea93df61 |
117 | same name as an existing table, you will get an error and the table will |
99248301 |
118 | not be created. |
3c5de62a |
119 | |
68e8e2e1 |
120 | my $t1 = $schema->add_table( name => 'foo' ) or die $schema->error; |
121 | my $t2 = SQL::Translator::Schema::Table->new( name => 'bar' ); |
122 | $t2 = $schema->add_table( $table_bar ) or die $schema->error; |
3c5de62a |
123 | |
124 | =cut |
125 | |
99248301 |
126 | my $self = shift; |
127 | my $table_class = 'SQL::Translator::Schema::Table'; |
128 | my $table; |
129 | |
130 | if ( UNIVERSAL::isa( $_[0], $table_class ) ) { |
131 | $table = shift; |
da8ab524 |
132 | $table->schema($self); |
99248301 |
133 | } |
134 | else { |
53032df3 |
135 | my %args = ref $_[0] eq 'HASH' ? %{ $_[0] } : @_; |
99248301 |
136 | $args{'schema'} = $self; |
da8ab524 |
137 | $table = $table_class->new( \%args ) |
138 | or return $self->error( $table_class->error ); |
99248301 |
139 | } |
3c5de62a |
140 | |
d37416fd |
141 | $table->order( ++$self->{_order}{table} ); |
da8ab524 |
142 | |
23044758 |
143 | # We know we have a name as the Table->new above errors if none given. |
144 | my $table_name = $table->name; |
99248301 |
145 | |
da8ab524 |
146 | if ( defined $self->{'tables'}{$table_name} ) { |
99248301 |
147 | return $self->error(qq[Can't create table: "$table_name" exists]); |
148 | } |
149 | else { |
da8ab524 |
150 | $self->{'tables'}{$table_name} = $table; |
99248301 |
151 | } |
3c5de62a |
152 | |
153 | return $table; |
154 | } |
155 | |
650f87eb |
156 | sub drop_table { |
157 | |
158 | =pod |
159 | |
160 | =head2 drop_table |
161 | |
162 | Remove a table from the schema. Returns the table object if the table was found |
163 | and removed, an error otherwise. The single parameter can be either a table |
164 | name or an C<SQL::Translator::Schema::Table> object. The "cascade" parameter |
165 | can be set to 1 to also drop all triggers on the table, default is 0. |
166 | |
167 | $schema->drop_table('mytable'); |
168 | $schema->drop_table('mytable', cascade => 1); |
169 | |
170 | =cut |
171 | |
da8ab524 |
172 | my $self = shift; |
173 | my $table_class = 'SQL::Translator::Schema::Table'; |
650f87eb |
174 | my $table_name; |
175 | |
176 | if ( UNIVERSAL::isa( $_[0], $table_class ) ) { |
177 | $table_name = shift->name; |
178 | } |
179 | else { |
180 | $table_name = shift; |
181 | } |
da8ab524 |
182 | my %args = @_; |
650f87eb |
183 | my $cascade = $args{'cascade'}; |
184 | |
da8ab524 |
185 | if ( !exists $self->{'tables'}{$table_name} ) { |
650f87eb |
186 | return $self->error(qq[Can't drop table: $table_name" doesn't exist]); |
187 | } |
188 | |
da8ab524 |
189 | my $table = delete $self->{'tables'}{$table_name}; |
190 | |
191 | if ($cascade) { |
650f87eb |
192 | |
650f87eb |
193 | # Drop all triggers on this table |
da8ab524 |
194 | $self->drop_trigger() |
195 | for ( grep { $_->on_table eq $table_name } @{ $self->{'triggers'} } ); |
650f87eb |
196 | } |
197 | return $table; |
198 | } |
199 | |
daf24e05 |
200 | sub add_procedure { |
201 | |
202 | =pod |
203 | |
204 | =head2 add_procedure |
205 | |
650f87eb |
206 | Add a procedure object. Returns the new SQL::Translator::Schema::Procedure |
207 | object. The "name" parameter is required. If you try to create a procedure |
208 | with the same name as an existing procedure, you will get an error and the |
209 | procedure will not be created. |
daf24e05 |
210 | |
211 | my $p1 = $schema->add_procedure( name => 'foo' ); |
212 | my $p2 = SQL::Translator::Schema::Procedure->new( name => 'bar' ); |
213 | $p2 = $schema->add_procedure( $procedure_bar ) or die $schema->error; |
214 | |
215 | =cut |
216 | |
217 | my $self = shift; |
218 | my $procedure_class = 'SQL::Translator::Schema::Procedure'; |
219 | my $procedure; |
220 | |
221 | if ( UNIVERSAL::isa( $_[0], $procedure_class ) ) { |
222 | $procedure = shift; |
da8ab524 |
223 | $procedure->schema($self); |
daf24e05 |
224 | } |
225 | else { |
53032df3 |
226 | my %args = ref $_[0] eq 'HASH' ? %{ $_[0] } : @_; |
daf24e05 |
227 | $args{'schema'} = $self; |
228 | return $self->error('No procedure name') unless $args{'name'}; |
da8ab524 |
229 | $procedure = $procedure_class->new( \%args ) |
230 | or return $self->error( $procedure_class->error ); |
daf24e05 |
231 | } |
232 | |
d37416fd |
233 | $procedure->order( ++$self->{_order}{proc} ); |
da8ab524 |
234 | my $procedure_name = $procedure->name |
235 | or return $self->error('No procedure name'); |
daf24e05 |
236 | |
da8ab524 |
237 | if ( defined $self->{'procedures'}{$procedure_name} ) { |
daf24e05 |
238 | return $self->error( |
da8ab524 |
239 | qq[Can't create procedure: "$procedure_name" exists] ); |
daf24e05 |
240 | } |
241 | else { |
da8ab524 |
242 | $self->{'procedures'}{$procedure_name} = $procedure; |
daf24e05 |
243 | } |
244 | |
245 | return $procedure; |
246 | } |
da8ab524 |
247 | |
650f87eb |
248 | sub drop_procedure { |
249 | |
250 | =pod |
251 | |
252 | =head2 drop_procedure |
253 | |
254 | Remove a procedure from the schema. Returns the procedure object if the |
255 | procedure was found and removed, an error otherwise. The single parameter |
256 | can be either a procedure name or an C<SQL::Translator::Schema::Procedure> |
257 | object. |
258 | |
259 | $schema->drop_procedure('myprocedure'); |
260 | |
261 | =cut |
262 | |
da8ab524 |
263 | my $self = shift; |
264 | my $proc_class = 'SQL::Translator::Schema::Procedure'; |
650f87eb |
265 | my $proc_name; |
266 | |
267 | if ( UNIVERSAL::isa( $_[0], $proc_class ) ) { |
268 | $proc_name = shift->name; |
269 | } |
270 | else { |
271 | $proc_name = shift; |
272 | } |
273 | |
da8ab524 |
274 | if ( !exists $self->{'procedures'}{$proc_name} ) { |
275 | return $self->error( |
276 | qq[Can't drop procedure: $proc_name" doesn't exist]); |
650f87eb |
277 | } |
278 | |
da8ab524 |
279 | my $proc = delete $self->{'procedures'}{$proc_name}; |
650f87eb |
280 | |
281 | return $proc; |
282 | } |
daf24e05 |
283 | |
5974bee7 |
284 | sub add_trigger { |
285 | |
286 | =pod |
287 | |
288 | =head2 add_trigger |
289 | |
290 | Add a trigger object. Returns the new SQL::Translator::Schema::Trigger object. |
291 | The "name" parameter is required. If you try to create a trigger with the |
ea93df61 |
292 | same name as an existing trigger, you will get an error and the trigger will |
5974bee7 |
293 | not be created. |
294 | |
295 | my $t1 = $schema->add_trigger( name => 'foo' ); |
296 | my $t2 = SQL::Translator::Schema::Trigger->new( name => 'bar' ); |
297 | $t2 = $schema->add_trigger( $trigger_bar ) or die $schema->error; |
298 | |
299 | =cut |
300 | |
301 | my $self = shift; |
302 | my $trigger_class = 'SQL::Translator::Schema::Trigger'; |
303 | my $trigger; |
304 | |
305 | if ( UNIVERSAL::isa( $_[0], $trigger_class ) ) { |
306 | $trigger = shift; |
da8ab524 |
307 | $trigger->schema($self); |
5974bee7 |
308 | } |
309 | else { |
53032df3 |
310 | my %args = ref $_[0] eq 'HASH' ? %{ $_[0] } : @_; |
daf24e05 |
311 | $args{'schema'} = $self; |
5974bee7 |
312 | return $self->error('No trigger name') unless $args{'name'}; |
da8ab524 |
313 | $trigger = $trigger_class->new( \%args ) |
314 | or return $self->error( $trigger_class->error ); |
5974bee7 |
315 | } |
316 | |
d37416fd |
317 | $trigger->order( ++$self->{_order}{trigger} ); |
5974bee7 |
318 | |
4faaaac6 |
319 | my $trigger_name = $trigger->name or return $self->error('No trigger name'); |
da8ab524 |
320 | if ( defined $self->{'triggers'}{$trigger_name} ) { |
5974bee7 |
321 | return $self->error(qq[Can't create trigger: "$trigger_name" exists]); |
322 | } |
323 | else { |
da8ab524 |
324 | $self->{'triggers'}{$trigger_name} = $trigger; |
5974bee7 |
325 | } |
326 | |
327 | return $trigger; |
328 | } |
da8ab524 |
329 | |
650f87eb |
330 | sub drop_trigger { |
331 | |
332 | =pod |
333 | |
334 | =head2 drop_trigger |
335 | |
336 | Remove a trigger from the schema. Returns the trigger object if the trigger was |
337 | found and removed, an error otherwise. The single parameter can be either a |
338 | trigger name or an C<SQL::Translator::Schema::Trigger> object. |
339 | |
340 | $schema->drop_trigger('mytrigger'); |
341 | |
342 | =cut |
343 | |
da8ab524 |
344 | my $self = shift; |
345 | my $trigger_class = 'SQL::Translator::Schema::Trigger'; |
650f87eb |
346 | my $trigger_name; |
347 | |
348 | if ( UNIVERSAL::isa( $_[0], $trigger_class ) ) { |
349 | $trigger_name = shift->name; |
350 | } |
351 | else { |
352 | $trigger_name = shift; |
353 | } |
354 | |
da8ab524 |
355 | if ( !exists $self->{'triggers'}{$trigger_name} ) { |
356 | return $self->error( |
357 | qq[Can't drop trigger: $trigger_name" doesn't exist]); |
650f87eb |
358 | } |
359 | |
da8ab524 |
360 | my $trigger = delete $self->{'triggers'}{$trigger_name}; |
650f87eb |
361 | |
362 | return $trigger; |
363 | } |
5974bee7 |
364 | |
76dce619 |
365 | sub add_view { |
3c5de62a |
366 | |
367 | =pod |
368 | |
76dce619 |
369 | =head2 add_view |
3c5de62a |
370 | |
76dce619 |
371 | Add a view object. Returns the new SQL::Translator::Schema::View object. |
99248301 |
372 | The "name" parameter is required. If you try to create a view with the |
ea93df61 |
373 | same name as an existing view, you will get an error and the view will |
99248301 |
374 | not be created. |
375 | |
68e8e2e1 |
376 | my $v1 = $schema->add_view( name => 'foo' ); |
377 | my $v2 = SQL::Translator::Schema::View->new( name => 'bar' ); |
378 | $v2 = $schema->add_view( $view_bar ) or die $schema->error; |
3c5de62a |
379 | |
380 | =cut |
381 | |
da8ab524 |
382 | my $self = shift; |
99248301 |
383 | my $view_class = 'SQL::Translator::Schema::View'; |
384 | my $view; |
385 | |
386 | if ( UNIVERSAL::isa( $_[0], $view_class ) ) { |
387 | $view = shift; |
da8ab524 |
388 | $view->schema($self); |
99248301 |
389 | } |
390 | else { |
53032df3 |
391 | my %args = ref $_[0] eq 'HASH' ? %{ $_[0] } : @_; |
daf24e05 |
392 | $args{'schema'} = $self; |
99248301 |
393 | return $self->error('No view name') unless $args{'name'}; |
394 | $view = $view_class->new( \%args ) or return $view_class->error; |
395 | } |
3c5de62a |
396 | |
d37416fd |
397 | $view->order( ++$self->{_order}{view} ); |
99248301 |
398 | my $view_name = $view->name or return $self->error('No view name'); |
399 | |
da8ab524 |
400 | if ( defined $self->{'views'}{$view_name} ) { |
99248301 |
401 | return $self->error(qq[Can't create view: "$view_name" exists]); |
402 | } |
403 | else { |
da8ab524 |
404 | $self->{'views'}{$view_name} = $view; |
99248301 |
405 | } |
3c5de62a |
406 | |
76dce619 |
407 | return $view; |
3c5de62a |
408 | } |
409 | |
650f87eb |
410 | sub drop_view { |
411 | |
412 | =pod |
413 | |
414 | =head2 drop_view |
415 | |
416 | Remove a view from the schema. Returns the view object if the view was found |
417 | and removed, an error otherwise. The single parameter can be either a view |
418 | name or an C<SQL::Translator::Schema::View> object. |
419 | |
420 | $schema->drop_view('myview'); |
421 | |
422 | =cut |
423 | |
da8ab524 |
424 | my $self = shift; |
425 | my $view_class = 'SQL::Translator::Schema::View'; |
650f87eb |
426 | my $view_name; |
427 | |
428 | if ( UNIVERSAL::isa( $_[0], $view_class ) ) { |
429 | $view_name = shift->name; |
430 | } |
431 | else { |
432 | $view_name = shift; |
433 | } |
434 | |
da8ab524 |
435 | if ( !exists $self->{'views'}{$view_name} ) { |
650f87eb |
436 | return $self->error(qq[Can't drop view: $view_name" doesn't exist]); |
437 | } |
438 | |
da8ab524 |
439 | my $view = delete $self->{'views'}{$view_name}; |
650f87eb |
440 | |
441 | return $view; |
442 | } |
443 | |
99248301 |
444 | sub database { |
445 | |
446 | =pod |
447 | |
448 | =head2 database |
449 | |
450 | Get or set the schema's database. (optional) |
451 | |
452 | my $database = $schema->database('PostgreSQL'); |
453 | |
454 | =cut |
455 | |
456 | my $self = shift; |
457 | $self->{'database'} = shift if @_; |
458 | return $self->{'database'} || ''; |
459 | } |
460 | |
76dce619 |
461 | sub is_valid { |
3c5de62a |
462 | |
463 | =pod |
464 | |
76dce619 |
465 | =head2 is_valid |
3c5de62a |
466 | |
76dce619 |
467 | Returns true if all the tables and views are valid. |
3c5de62a |
468 | |
76dce619 |
469 | my $ok = $schema->is_valid or die $schema->error; |
470 | |
471 | =cut |
472 | |
473 | my $self = shift; |
474 | |
475 | return $self->error('No tables') unless $self->get_tables; |
476 | |
477 | for my $object ( $self->get_tables, $self->get_views ) { |
478 | return $object->error unless $object->is_valid; |
479 | } |
480 | |
481 | return 1; |
482 | } |
483 | |
daf24e05 |
484 | sub get_procedure { |
485 | |
486 | =pod |
487 | |
488 | =head2 get_procedure |
489 | |
490 | Returns a procedure by the name provided. |
491 | |
492 | my $procedure = $schema->get_procedure('foo'); |
493 | |
494 | =cut |
495 | |
da8ab524 |
496 | my $self = shift; |
daf24e05 |
497 | my $procedure_name = shift or return $self->error('No procedure name'); |
da8ab524 |
498 | return $self->error(qq[Table "$procedure_name" does not exist]) |
499 | unless exists $self->{'procedures'}{$procedure_name}; |
500 | return $self->{'procedures'}{$procedure_name}; |
daf24e05 |
501 | } |
502 | |
daf24e05 |
503 | sub get_procedures { |
504 | |
505 | =pod |
506 | |
507 | =head2 get_procedures |
508 | |
509 | Returns all the procedures as an array or array reference. |
510 | |
511 | my @procedures = $schema->get_procedures; |
512 | |
513 | =cut |
514 | |
da8ab524 |
515 | my $self = shift; |
516 | my @procedures = |
517 | map { $_->[1] } |
518 | sort { $a->[0] <=> $b->[0] } |
519 | map { [ $_->order, $_ ] } values %{ $self->{'procedures'} }; |
daf24e05 |
520 | |
da8ab524 |
521 | if (@procedures) { |
daf24e05 |
522 | return wantarray ? @procedures : \@procedures; |
523 | } |
524 | else { |
525 | $self->error('No procedures'); |
526 | return wantarray ? () : undef; |
527 | } |
528 | } |
529 | |
76dce619 |
530 | sub get_table { |
531 | |
532 | =pod |
533 | |
534 | =head2 get_table |
535 | |
536 | Returns a table by the name provided. |
537 | |
538 | my $table = $schema->get_table('foo'); |
539 | |
540 | =cut |
541 | |
da8ab524 |
542 | my $self = shift; |
76dce619 |
543 | my $table_name = shift or return $self->error('No table name'); |
6a25a87d |
544 | my $case_insensitive = shift; |
545 | if ( $case_insensitive ) { |
ea93df61 |
546 | $table_name = uc($table_name); |
547 | foreach my $table ( keys %{$self->{tables}} ) { |
548 | return $self->{tables}{$table} if $table_name eq uc($table); |
549 | } |
550 | return $self->error(qq[Table "$table_name" does not exist]); |
6a25a87d |
551 | } |
da8ab524 |
552 | return $self->error(qq[Table "$table_name" does not exist]) |
553 | unless exists $self->{'tables'}{$table_name}; |
554 | return $self->{'tables'}{$table_name}; |
76dce619 |
555 | } |
556 | |
76dce619 |
557 | sub get_tables { |
558 | |
559 | =pod |
560 | |
561 | =head2 get_tables |
562 | |
563 | Returns all the tables as an array or array reference. |
564 | |
565 | my @tables = $schema->get_tables; |
566 | |
567 | =cut |
568 | |
569 | my $self = shift; |
da8ab524 |
570 | my @tables = |
571 | map { $_->[1] } |
572 | sort { $a->[0] <=> $b->[0] } |
573 | map { [ $_->order, $_ ] } values %{ $self->{'tables'} }; |
76dce619 |
574 | |
da8ab524 |
575 | if (@tables) { |
76dce619 |
576 | return wantarray ? @tables : \@tables; |
577 | } |
578 | else { |
579 | $self->error('No tables'); |
580 | return wantarray ? () : undef; |
581 | } |
582 | } |
583 | |
daf24e05 |
584 | sub get_trigger { |
585 | |
586 | =pod |
587 | |
588 | =head2 get_trigger |
589 | |
590 | Returns a trigger by the name provided. |
591 | |
592 | my $trigger = $schema->get_trigger('foo'); |
593 | |
594 | =cut |
595 | |
da8ab524 |
596 | my $self = shift; |
daf24e05 |
597 | my $trigger_name = shift or return $self->error('No trigger name'); |
da8ab524 |
598 | return $self->error(qq[Table "$trigger_name" does not exist]) |
599 | unless exists $self->{'triggers'}{$trigger_name}; |
600 | return $self->{'triggers'}{$trigger_name}; |
daf24e05 |
601 | } |
602 | |
daf24e05 |
603 | sub get_triggers { |
604 | |
605 | =pod |
606 | |
607 | =head2 get_triggers |
608 | |
609 | Returns all the triggers as an array or array reference. |
610 | |
611 | my @triggers = $schema->get_triggers; |
612 | |
613 | =cut |
614 | |
da8ab524 |
615 | my $self = shift; |
616 | my @triggers = |
617 | map { $_->[1] } |
618 | sort { $a->[0] <=> $b->[0] } |
619 | map { [ $_->order, $_ ] } values %{ $self->{'triggers'} }; |
daf24e05 |
620 | |
da8ab524 |
621 | if (@triggers) { |
daf24e05 |
622 | return wantarray ? @triggers : \@triggers; |
623 | } |
624 | else { |
625 | $self->error('No triggers'); |
626 | return wantarray ? () : undef; |
627 | } |
628 | } |
629 | |
76dce619 |
630 | sub get_view { |
631 | |
632 | =pod |
633 | |
634 | =head2 get_view |
635 | |
636 | Returns a view by the name provided. |
637 | |
638 | my $view = $schema->get_view('foo'); |
3c5de62a |
639 | |
640 | =cut |
641 | |
da8ab524 |
642 | my $self = shift; |
76dce619 |
643 | my $view_name = shift or return $self->error('No view name'); |
da8ab524 |
644 | return $self->error('View "$view_name" does not exist') |
645 | unless exists $self->{'views'}{$view_name}; |
646 | return $self->{'views'}{$view_name}; |
76dce619 |
647 | } |
3c5de62a |
648 | |
76dce619 |
649 | sub get_views { |
3c5de62a |
650 | |
76dce619 |
651 | =pod |
652 | |
653 | =head2 get_views |
654 | |
655 | Returns all the views as an array or array reference. |
656 | |
657 | my @views = $schema->get_views; |
658 | |
659 | =cut |
660 | |
661 | my $self = shift; |
da8ab524 |
662 | my @views = |
663 | map { $_->[1] } |
664 | sort { $a->[0] <=> $b->[0] } |
665 | map { [ $_->order, $_ ] } values %{ $self->{'views'} }; |
76dce619 |
666 | |
da8ab524 |
667 | if (@views) { |
76dce619 |
668 | return wantarray ? @views : \@views; |
669 | } |
670 | else { |
671 | $self->error('No views'); |
672 | return wantarray ? () : undef; |
673 | } |
3c5de62a |
674 | } |
675 | |
9480e70b |
676 | sub make_natural_joins { |
677 | |
678 | =pod |
679 | |
680 | =head2 make_natural_joins |
681 | |
682 | Creates foriegn key relationships among like-named fields in different |
683 | tables. Accepts the following arguments: |
684 | |
685 | =over 4 |
686 | |
650f87eb |
687 | =item * join_pk_only |
9480e70b |
688 | |
ea93df61 |
689 | A True or False argument which determins whether or not to perform |
9480e70b |
690 | the joins from primary keys to fields of the same name in other tables |
691 | |
692 | =item * skip_fields |
693 | |
694 | A list of fields to skip in the joins |
695 | |
0e42fda6 |
696 | =back |
9480e70b |
697 | |
698 | $schema->make_natural_joins( |
699 | join_pk_only => 1, |
700 | skip_fields => 'name,department_id', |
701 | ); |
702 | |
703 | =cut |
704 | |
705 | my $self = shift; |
706 | my %args = @_; |
707 | my $join_pk_only = $args{'join_pk_only'} || 0; |
da8ab524 |
708 | my %skip_fields = |
709 | map { s/^\s+|\s+$//g; $_, 1 } @{ parse_list_arg( $args{'skip_fields'} ) }; |
9480e70b |
710 | |
711 | my ( %common_keys, %pk ); |
712 | for my $table ( $self->get_tables ) { |
713 | for my $field ( $table->get_fields ) { |
714 | my $field_name = $field->name or next; |
da8ab524 |
715 | next if $skip_fields{$field_name}; |
716 | $pk{$field_name} = 1 if $field->is_primary_key; |
717 | push @{ $common_keys{$field_name} }, $table->name; |
9480e70b |
718 | } |
da8ab524 |
719 | } |
720 | |
9480e70b |
721 | for my $field ( keys %common_keys ) { |
da8ab524 |
722 | next if $join_pk_only and !defined $pk{$field}; |
9480e70b |
723 | |
da8ab524 |
724 | my @table_names = @{ $common_keys{$field} }; |
9480e70b |
725 | next unless scalar @table_names > 1; |
726 | |
727 | for my $i ( 0 .. $#table_names ) { |
da8ab524 |
728 | my $table1 = $self->get_table( $table_names[$i] ) or next; |
9480e70b |
729 | |
730 | for my $j ( 1 .. $#table_names ) { |
da8ab524 |
731 | my $table2 = $self->get_table( $table_names[$j] ) or next; |
9480e70b |
732 | next if $table1->name eq $table2->name; |
733 | |
734 | $table1->add_constraint( |
735 | type => FOREIGN_KEY, |
736 | fields => $field, |
737 | reference_table => $table2->name, |
738 | reference_fields => $field, |
739 | ); |
650f87eb |
740 | } |
9480e70b |
741 | } |
650f87eb |
742 | } |
9480e70b |
743 | |
744 | return 1; |
745 | } |
746 | |
99248301 |
747 | sub name { |
748 | |
749 | =pod |
750 | |
751 | =head2 name |
752 | |
753 | Get or set the schema's name. (optional) |
754 | |
755 | my $schema_name = $schema->name('Foo Database'); |
756 | |
757 | =cut |
758 | |
759 | my $self = shift; |
760 | $self->{'name'} = shift if @_; |
761 | return $self->{'name'} || ''; |
762 | } |
763 | |
97382c6d |
764 | sub translator { |
765 | |
766 | =pod |
767 | |
10f36920 |
768 | =head2 translator |
47fed978 |
769 | |
97382c6d |
770 | Get the SQL::Translator instance that instantiated the parser. |
47fed978 |
771 | |
772 | =cut |
773 | |
47fed978 |
774 | my $self = shift; |
10f36920 |
775 | $self->{'translator'} = shift if @_; |
776 | return $self->{'translator'}; |
47fed978 |
777 | } |
778 | |
d0b43695 |
779 | sub DESTROY { |
780 | my $self = shift; |
781 | undef $_ for values %{ $self->{'tables'} }; |
da8ab524 |
782 | undef $_ for values %{ $self->{'views'} }; |
d0b43695 |
783 | } |
784 | |
3c5de62a |
785 | 1; |
786 | |
3c5de62a |
787 | =pod |
788 | |
789 | =head1 AUTHOR |
790 | |
97382c6d |
791 | Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>. |
3c5de62a |
792 | |
793 | =cut |
da8ab524 |
794 | |