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1 | package SQL::Translator::Schema; |
2 | |
3 | # ---------------------------------------------------------------------- |
650f87eb |
4 | # $Id: Schema.pm,v 1.21 2004-11-27 16:32:16 schiffbruechige Exp $ |
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5 | # ---------------------------------------------------------------------- |
977651a5 |
6 | # Copyright (C) 2002-4 SQLFairy Authors |
3c5de62a |
7 | # |
8 | # This program is free software; you can redistribute it and/or |
9 | # modify it under the terms of the GNU General Public License as |
10 | # published by the Free Software Foundation; version 2. |
11 | # |
12 | # This program is distributed in the hope that it will be useful, but |
13 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | # General Public License for more details. |
16 | # |
17 | # You should have received a copy of the GNU General Public License |
18 | # along with this program; if not, write to the Free Software |
19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
20 | # 02111-1307 USA |
21 | # ------------------------------------------------------------------- |
22 | |
23 | =pod |
24 | |
25 | =head1 NAME |
26 | |
27 | SQL::Translator::Schema - SQL::Translator schema object |
28 | |
29 | =head1 SYNOPSIS |
30 | |
31 | use SQL::Translator::Schema; |
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32 | my $schema = SQL::Translator::Schema->new; |
33 | my $table = $schema->add_table( name => 'foo' ); |
34 | my $view = $schema->add_view( name => 'bar', sql => '...' ); |
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35 | |
36 | =head1 DESCSIPTION |
37 | |
38 | C<SQL::Translator::Schema> is the object that accepts, validates, and |
39 | returns the database structure. |
40 | |
41 | =head1 METHODS |
42 | |
43 | =cut |
44 | |
45 | use strict; |
9480e70b |
46 | use SQL::Translator::Schema::Constants; |
daf24e05 |
47 | use SQL::Translator::Schema::Procedure; |
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48 | use SQL::Translator::Schema::Table; |
5974bee7 |
49 | use SQL::Translator::Schema::Trigger; |
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50 | use SQL::Translator::Schema::View; |
b046b0b9 |
51 | use SQL::Translator::Schema::Graph; |
5974bee7 |
52 | use SQL::Translator::Utils 'parse_list_arg'; |
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53 | |
b6a880d1 |
54 | use base 'SQL::Translator::Schema::Object'; |
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55 | use vars qw[ $VERSION $TABLE_ORDER $VIEW_ORDER $TRIGGER_ORDER $PROC_ORDER ]; |
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56 | |
650f87eb |
57 | $VERSION = sprintf "%d.%02d", q$Revision: 1.21 $ =~ /(\d+)\.(\d+)/; |
3c5de62a |
58 | |
59 | # ---------------------------------------------------------------------- |
9371be50 |
60 | |
61 | __PACKAGE__->_attributes( qw/name database translator/ ); |
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62 | |
63 | =pod |
64 | |
65 | =head2 new |
66 | |
67 | Object constructor. |
68 | |
9aeb1164 |
69 | my $schema = SQL::Translator::Schema->new( |
99248301 |
70 | name => 'Foo', |
71 | database => 'MySQL', |
72 | ); |
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73 | |
74 | =cut |
75 | |
10f36920 |
76 | sub as_graph { |
77 | my($self) = @_; |
78 | return SQL::Translator::Schema::Graph->new(translator => $self->translator); |
79 | } |
80 | |
3c5de62a |
81 | # ---------------------------------------------------------------------- |
76dce619 |
82 | sub add_table { |
3c5de62a |
83 | |
84 | =pod |
85 | |
76dce619 |
86 | =head2 add_table |
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87 | |
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88 | Add a table object. Returns the new SQL::Translator::Schema::Table object. |
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89 | The "name" parameter is required. If you try to create a table with the |
90 | same name as an existing table, you will get an error and the table will |
91 | not be created. |
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92 | |
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93 | my $t1 = $schema->add_table( name => 'foo' ) or die $schema->error; |
94 | my $t2 = SQL::Translator::Schema::Table->new( name => 'bar' ); |
95 | $t2 = $schema->add_table( $table_bar ) or die $schema->error; |
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96 | |
97 | =cut |
98 | |
99248301 |
99 | my $self = shift; |
100 | my $table_class = 'SQL::Translator::Schema::Table'; |
101 | my $table; |
102 | |
103 | if ( UNIVERSAL::isa( $_[0], $table_class ) ) { |
104 | $table = shift; |
105 | $table->schema( $self ); |
106 | } |
107 | else { |
108 | my %args = @_; |
109 | $args{'schema'} = $self; |
110 | $table = $table_class->new( \%args ) or return |
111 | $self->error( $table_class->error ); |
112 | } |
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113 | |
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114 | $table->order( ++$TABLE_ORDER ); |
23044758 |
115 | # We know we have a name as the Table->new above errors if none given. |
116 | my $table_name = $table->name; |
99248301 |
117 | |
118 | if ( defined $self->{'tables'}{ $table_name } ) { |
119 | return $self->error(qq[Can't create table: "$table_name" exists]); |
120 | } |
121 | else { |
122 | $self->{'tables'}{ $table_name } = $table; |
99248301 |
123 | } |
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124 | |
125 | return $table; |
126 | } |
127 | |
128 | # ---------------------------------------------------------------------- |
650f87eb |
129 | sub drop_table { |
130 | |
131 | =pod |
132 | |
133 | =head2 drop_table |
134 | |
135 | Remove a table from the schema. Returns the table object if the table was found |
136 | and removed, an error otherwise. The single parameter can be either a table |
137 | name or an C<SQL::Translator::Schema::Table> object. The "cascade" parameter |
138 | can be set to 1 to also drop all triggers on the table, default is 0. |
139 | |
140 | $schema->drop_table('mytable'); |
141 | $schema->drop_table('mytable', cascade => 1); |
142 | |
143 | =cut |
144 | |
145 | my $self = shift; |
146 | my $table_class = 'SQL::Translator::Schema::Table'; |
147 | my $table_name; |
148 | |
149 | if ( UNIVERSAL::isa( $_[0], $table_class ) ) { |
150 | $table_name = shift->name; |
151 | } |
152 | else { |
153 | $table_name = shift; |
154 | } |
155 | my %args = @_; |
156 | my $cascade = $args{'cascade'}; |
157 | |
158 | if ( ! exists $self->{'tables'}{ $table_name } ) { |
159 | return $self->error(qq[Can't drop table: $table_name" doesn't exist]); |
160 | } |
161 | |
162 | my $table = delete $self->{'tables'}{ $table_name }; |
163 | |
164 | if ( $cascade ) { |
165 | # Drop all triggers on this table |
166 | $self->drop_trigger() for (grep { $_->on_table eq $table_name } |
167 | @{ $self->{'triggers'}} |
168 | ); |
169 | } |
170 | return $table; |
171 | } |
172 | |
173 | # ---------------------------------------------------------------------- |
daf24e05 |
174 | sub add_procedure { |
175 | |
176 | =pod |
177 | |
178 | =head2 add_procedure |
179 | |
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180 | Add a procedure object. Returns the new SQL::Translator::Schema::Procedure |
181 | object. The "name" parameter is required. If you try to create a procedure |
182 | with the same name as an existing procedure, you will get an error and the |
183 | procedure will not be created. |
daf24e05 |
184 | |
185 | my $p1 = $schema->add_procedure( name => 'foo' ); |
186 | my $p2 = SQL::Translator::Schema::Procedure->new( name => 'bar' ); |
187 | $p2 = $schema->add_procedure( $procedure_bar ) or die $schema->error; |
188 | |
189 | =cut |
190 | |
191 | my $self = shift; |
192 | my $procedure_class = 'SQL::Translator::Schema::Procedure'; |
193 | my $procedure; |
194 | |
195 | if ( UNIVERSAL::isa( $_[0], $procedure_class ) ) { |
196 | $procedure = shift; |
197 | $procedure->schema( $self ); |
198 | } |
199 | else { |
200 | my %args = @_; |
201 | $args{'schema'} = $self; |
202 | return $self->error('No procedure name') unless $args{'name'}; |
203 | $procedure = $procedure_class->new( \%args ) or |
204 | return $self->error( $procedure_class->error ); |
205 | } |
206 | |
207 | $procedure->order( ++$PROC_ORDER ); |
208 | my $procedure_name = $procedure->name or return |
209 | $self->error('No procedure name'); |
210 | |
211 | if ( defined $self->{'procedures'}{ $procedure_name } ) { |
212 | return $self->error( |
213 | qq[Can't create procedure: "$procedure_name" exists] |
214 | ); |
215 | } |
216 | else { |
217 | $self->{'procedures'}{ $procedure_name } = $procedure; |
218 | } |
219 | |
220 | return $procedure; |
221 | } |
650f87eb |
222 | # ---------------------------------------------------------------------- |
223 | sub drop_procedure { |
224 | |
225 | =pod |
226 | |
227 | =head2 drop_procedure |
228 | |
229 | Remove a procedure from the schema. Returns the procedure object if the |
230 | procedure was found and removed, an error otherwise. The single parameter |
231 | can be either a procedure name or an C<SQL::Translator::Schema::Procedure> |
232 | object. |
233 | |
234 | $schema->drop_procedure('myprocedure'); |
235 | |
236 | =cut |
237 | |
238 | my $self = shift; |
239 | my $proc_class = 'SQL::Translator::Schema::Procedure'; |
240 | my $proc_name; |
241 | |
242 | if ( UNIVERSAL::isa( $_[0], $proc_class ) ) { |
243 | $proc_name = shift->name; |
244 | } |
245 | else { |
246 | $proc_name = shift; |
247 | } |
248 | |
249 | if ( ! exists $self->{'procedures'}{ $proc_name } ) { |
250 | return $self->error(qq[Can't drop procedure: $proc_name" doesn't exist]); |
251 | } |
252 | |
253 | my $proc = delete $self->{'procedures'}{ $proc_name }; |
254 | |
255 | return $proc; |
256 | } |
daf24e05 |
257 | |
258 | # ---------------------------------------------------------------------- |
5974bee7 |
259 | sub add_trigger { |
260 | |
261 | =pod |
262 | |
263 | =head2 add_trigger |
264 | |
265 | Add a trigger object. Returns the new SQL::Translator::Schema::Trigger object. |
266 | The "name" parameter is required. If you try to create a trigger with the |
267 | same name as an existing trigger, you will get an error and the trigger will |
268 | not be created. |
269 | |
270 | my $t1 = $schema->add_trigger( name => 'foo' ); |
271 | my $t2 = SQL::Translator::Schema::Trigger->new( name => 'bar' ); |
272 | $t2 = $schema->add_trigger( $trigger_bar ) or die $schema->error; |
273 | |
274 | =cut |
275 | |
276 | my $self = shift; |
277 | my $trigger_class = 'SQL::Translator::Schema::Trigger'; |
278 | my $trigger; |
279 | |
280 | if ( UNIVERSAL::isa( $_[0], $trigger_class ) ) { |
281 | $trigger = shift; |
daf24e05 |
282 | $trigger->schema( $self ); |
5974bee7 |
283 | } |
284 | else { |
285 | my %args = @_; |
daf24e05 |
286 | $args{'schema'} = $self; |
5974bee7 |
287 | return $self->error('No trigger name') unless $args{'name'}; |
288 | $trigger = $trigger_class->new( \%args ) or |
289 | return $self->error( $trigger_class->error ); |
290 | } |
291 | |
292 | $trigger->order( ++$TRIGGER_ORDER ); |
293 | my $trigger_name = $trigger->name or return $self->error('No trigger name'); |
294 | |
295 | if ( defined $self->{'triggers'}{ $trigger_name } ) { |
296 | return $self->error(qq[Can't create trigger: "$trigger_name" exists]); |
297 | } |
298 | else { |
299 | $self->{'triggers'}{ $trigger_name } = $trigger; |
300 | } |
301 | |
302 | return $trigger; |
303 | } |
650f87eb |
304 | # ---------------------------------------------------------------------- |
305 | sub drop_trigger { |
306 | |
307 | =pod |
308 | |
309 | =head2 drop_trigger |
310 | |
311 | Remove a trigger from the schema. Returns the trigger object if the trigger was |
312 | found and removed, an error otherwise. The single parameter can be either a |
313 | trigger name or an C<SQL::Translator::Schema::Trigger> object. |
314 | |
315 | $schema->drop_trigger('mytrigger'); |
316 | |
317 | =cut |
318 | |
319 | my $self = shift; |
320 | my $trigger_class = 'SQL::Translator::Schema::Trigger'; |
321 | my $trigger_name; |
322 | |
323 | if ( UNIVERSAL::isa( $_[0], $trigger_class ) ) { |
324 | $trigger_name = shift->name; |
325 | } |
326 | else { |
327 | $trigger_name = shift; |
328 | } |
329 | |
330 | if ( ! exists $self->{'triggers'}{ $trigger_name } ) { |
331 | return $self->error(qq[Can't drop trigger: $trigger_name" doesn't exist]); |
332 | } |
333 | |
334 | my $trigger = delete $self->{'triggers'}{ $trigger_name }; |
335 | |
336 | return $trigger; |
337 | } |
5974bee7 |
338 | |
339 | # ---------------------------------------------------------------------- |
76dce619 |
340 | sub add_view { |
3c5de62a |
341 | |
342 | =pod |
343 | |
76dce619 |
344 | =head2 add_view |
3c5de62a |
345 | |
76dce619 |
346 | Add a view object. Returns the new SQL::Translator::Schema::View object. |
99248301 |
347 | The "name" parameter is required. If you try to create a view with the |
348 | same name as an existing view, you will get an error and the view will |
349 | not be created. |
350 | |
68e8e2e1 |
351 | my $v1 = $schema->add_view( name => 'foo' ); |
352 | my $v2 = SQL::Translator::Schema::View->new( name => 'bar' ); |
353 | $v2 = $schema->add_view( $view_bar ) or die $schema->error; |
3c5de62a |
354 | |
355 | =cut |
356 | |
99248301 |
357 | my $self = shift; |
358 | my $view_class = 'SQL::Translator::Schema::View'; |
359 | my $view; |
360 | |
361 | if ( UNIVERSAL::isa( $_[0], $view_class ) ) { |
362 | $view = shift; |
daf24e05 |
363 | $view->schema( $self ); |
99248301 |
364 | } |
365 | else { |
366 | my %args = @_; |
daf24e05 |
367 | $args{'schema'} = $self; |
99248301 |
368 | return $self->error('No view name') unless $args{'name'}; |
369 | $view = $view_class->new( \%args ) or return $view_class->error; |
370 | } |
3c5de62a |
371 | |
d0b43695 |
372 | $view->order( ++$VIEW_ORDER ); |
99248301 |
373 | my $view_name = $view->name or return $self->error('No view name'); |
374 | |
375 | if ( defined $self->{'views'}{ $view_name } ) { |
376 | return $self->error(qq[Can't create view: "$view_name" exists]); |
377 | } |
378 | else { |
379 | $self->{'views'}{ $view_name } = $view; |
99248301 |
380 | } |
3c5de62a |
381 | |
76dce619 |
382 | return $view; |
3c5de62a |
383 | } |
384 | |
385 | # ---------------------------------------------------------------------- |
650f87eb |
386 | sub drop_view { |
387 | |
388 | =pod |
389 | |
390 | =head2 drop_view |
391 | |
392 | Remove a view from the schema. Returns the view object if the view was found |
393 | and removed, an error otherwise. The single parameter can be either a view |
394 | name or an C<SQL::Translator::Schema::View> object. |
395 | |
396 | $schema->drop_view('myview'); |
397 | |
398 | =cut |
399 | |
400 | my $self = shift; |
401 | my $view_class = 'SQL::Translator::Schema::View'; |
402 | my $view_name; |
403 | |
404 | if ( UNIVERSAL::isa( $_[0], $view_class ) ) { |
405 | $view_name = shift->name; |
406 | } |
407 | else { |
408 | $view_name = shift; |
409 | } |
410 | |
411 | if ( ! exists $self->{'views'}{ $view_name } ) { |
412 | return $self->error(qq[Can't drop view: $view_name" doesn't exist]); |
413 | } |
414 | |
415 | my $view = delete $self->{'views'}{ $view_name }; |
416 | |
417 | return $view; |
418 | } |
419 | |
420 | # ---------------------------------------------------------------------- |
99248301 |
421 | sub database { |
422 | |
423 | =pod |
424 | |
425 | =head2 database |
426 | |
427 | Get or set the schema's database. (optional) |
428 | |
429 | my $database = $schema->database('PostgreSQL'); |
430 | |
431 | =cut |
432 | |
433 | my $self = shift; |
434 | $self->{'database'} = shift if @_; |
435 | return $self->{'database'} || ''; |
436 | } |
437 | |
438 | # ---------------------------------------------------------------------- |
76dce619 |
439 | sub is_valid { |
3c5de62a |
440 | |
441 | =pod |
442 | |
76dce619 |
443 | =head2 is_valid |
3c5de62a |
444 | |
76dce619 |
445 | Returns true if all the tables and views are valid. |
3c5de62a |
446 | |
76dce619 |
447 | my $ok = $schema->is_valid or die $schema->error; |
448 | |
449 | =cut |
450 | |
451 | my $self = shift; |
452 | |
453 | return $self->error('No tables') unless $self->get_tables; |
454 | |
455 | for my $object ( $self->get_tables, $self->get_views ) { |
456 | return $object->error unless $object->is_valid; |
457 | } |
458 | |
459 | return 1; |
460 | } |
461 | |
462 | # ---------------------------------------------------------------------- |
daf24e05 |
463 | sub get_procedure { |
464 | |
465 | =pod |
466 | |
467 | =head2 get_procedure |
468 | |
469 | Returns a procedure by the name provided. |
470 | |
471 | my $procedure = $schema->get_procedure('foo'); |
472 | |
473 | =cut |
474 | |
475 | my $self = shift; |
476 | my $procedure_name = shift or return $self->error('No procedure name'); |
477 | return $self->error( qq[Table "$procedure_name" does not exist] ) unless |
478 | exists $self->{'procedures'}{ $procedure_name }; |
479 | return $self->{'procedures'}{ $procedure_name }; |
480 | } |
481 | |
482 | # ---------------------------------------------------------------------- |
483 | sub get_procedures { |
484 | |
485 | =pod |
486 | |
487 | =head2 get_procedures |
488 | |
489 | Returns all the procedures as an array or array reference. |
490 | |
491 | my @procedures = $schema->get_procedures; |
492 | |
493 | =cut |
494 | |
495 | my $self = shift; |
496 | my @procedures = |
497 | map { $_->[1] } |
498 | sort { $a->[0] <=> $b->[0] } |
499 | map { [ $_->order, $_ ] } |
500 | values %{ $self->{'procedures'} }; |
501 | |
502 | if ( @procedures ) { |
503 | return wantarray ? @procedures : \@procedures; |
504 | } |
505 | else { |
506 | $self->error('No procedures'); |
507 | return wantarray ? () : undef; |
508 | } |
509 | } |
510 | |
511 | # ---------------------------------------------------------------------- |
76dce619 |
512 | sub get_table { |
513 | |
514 | =pod |
515 | |
516 | =head2 get_table |
517 | |
518 | Returns a table by the name provided. |
519 | |
520 | my $table = $schema->get_table('foo'); |
521 | |
522 | =cut |
523 | |
524 | my $self = shift; |
525 | my $table_name = shift or return $self->error('No table name'); |
99248301 |
526 | return $self->error( qq[Table "$table_name" does not exist] ) unless |
76dce619 |
527 | exists $self->{'tables'}{ $table_name }; |
528 | return $self->{'tables'}{ $table_name }; |
529 | } |
530 | |
531 | # ---------------------------------------------------------------------- |
532 | sub get_tables { |
533 | |
534 | =pod |
535 | |
536 | =head2 get_tables |
537 | |
538 | Returns all the tables as an array or array reference. |
539 | |
540 | my @tables = $schema->get_tables; |
541 | |
542 | =cut |
543 | |
544 | my $self = shift; |
d0b43695 |
545 | my @tables = |
546 | map { $_->[1] } |
547 | sort { $a->[0] <=> $b->[0] } |
548 | map { [ $_->order, $_ ] } |
76dce619 |
549 | values %{ $self->{'tables'} }; |
550 | |
551 | if ( @tables ) { |
552 | return wantarray ? @tables : \@tables; |
553 | } |
554 | else { |
555 | $self->error('No tables'); |
556 | return wantarray ? () : undef; |
557 | } |
558 | } |
559 | |
560 | # ---------------------------------------------------------------------- |
daf24e05 |
561 | sub get_trigger { |
562 | |
563 | =pod |
564 | |
565 | =head2 get_trigger |
566 | |
567 | Returns a trigger by the name provided. |
568 | |
569 | my $trigger = $schema->get_trigger('foo'); |
570 | |
571 | =cut |
572 | |
573 | my $self = shift; |
574 | my $trigger_name = shift or return $self->error('No trigger name'); |
575 | return $self->error( qq[Table "$trigger_name" does not exist] ) unless |
576 | exists $self->{'triggers'}{ $trigger_name }; |
577 | return $self->{'triggers'}{ $trigger_name }; |
578 | } |
579 | |
580 | # ---------------------------------------------------------------------- |
581 | sub get_triggers { |
582 | |
583 | =pod |
584 | |
585 | =head2 get_triggers |
586 | |
587 | Returns all the triggers as an array or array reference. |
588 | |
589 | my @triggers = $schema->get_triggers; |
590 | |
591 | =cut |
592 | |
593 | my $self = shift; |
594 | my @triggers = |
595 | map { $_->[1] } |
596 | sort { $a->[0] <=> $b->[0] } |
597 | map { [ $_->order, $_ ] } |
598 | values %{ $self->{'triggers'} }; |
599 | |
600 | if ( @triggers ) { |
601 | return wantarray ? @triggers : \@triggers; |
602 | } |
603 | else { |
604 | $self->error('No triggers'); |
605 | return wantarray ? () : undef; |
606 | } |
607 | } |
608 | |
609 | # ---------------------------------------------------------------------- |
76dce619 |
610 | sub get_view { |
611 | |
612 | =pod |
613 | |
614 | =head2 get_view |
615 | |
616 | Returns a view by the name provided. |
617 | |
618 | my $view = $schema->get_view('foo'); |
3c5de62a |
619 | |
620 | =cut |
621 | |
622 | my $self = shift; |
76dce619 |
623 | my $view_name = shift or return $self->error('No view name'); |
624 | return $self->error('View "$view_name" does not exist') unless |
625 | exists $self->{'views'}{ $view_name }; |
626 | return $self->{'views'}{ $view_name }; |
627 | } |
3c5de62a |
628 | |
76dce619 |
629 | # ---------------------------------------------------------------------- |
630 | sub get_views { |
3c5de62a |
631 | |
76dce619 |
632 | =pod |
633 | |
634 | =head2 get_views |
635 | |
636 | Returns all the views as an array or array reference. |
637 | |
638 | my @views = $schema->get_views; |
639 | |
640 | =cut |
641 | |
642 | my $self = shift; |
d0b43695 |
643 | my @views = |
644 | map { $_->[1] } |
645 | sort { $a->[0] <=> $b->[0] } |
646 | map { [ $_->order, $_ ] } |
99248301 |
647 | values %{ $self->{'views'} }; |
76dce619 |
648 | |
649 | if ( @views ) { |
650 | return wantarray ? @views : \@views; |
651 | } |
652 | else { |
653 | $self->error('No views'); |
654 | return wantarray ? () : undef; |
655 | } |
3c5de62a |
656 | } |
657 | |
99248301 |
658 | # ---------------------------------------------------------------------- |
9480e70b |
659 | sub make_natural_joins { |
660 | |
661 | =pod |
662 | |
663 | =head2 make_natural_joins |
664 | |
665 | Creates foriegn key relationships among like-named fields in different |
666 | tables. Accepts the following arguments: |
667 | |
668 | =over 4 |
669 | |
650f87eb |
670 | =item * join_pk_only |
9480e70b |
671 | |
672 | A True or False argument which determins whether or not to perform |
673 | the joins from primary keys to fields of the same name in other tables |
674 | |
675 | =item * skip_fields |
676 | |
677 | A list of fields to skip in the joins |
678 | |
679 | =back 4 |
680 | |
681 | $schema->make_natural_joins( |
682 | join_pk_only => 1, |
683 | skip_fields => 'name,department_id', |
684 | ); |
685 | |
686 | =cut |
687 | |
688 | my $self = shift; |
689 | my %args = @_; |
690 | my $join_pk_only = $args{'join_pk_only'} || 0; |
40c522c6 |
691 | my %skip_fields = map { s/^\s+|\s+$//g; $_, 1 } @{ |
692 | parse_list_arg( $args{'skip_fields'} ) |
693 | }; |
9480e70b |
694 | |
695 | my ( %common_keys, %pk ); |
696 | for my $table ( $self->get_tables ) { |
697 | for my $field ( $table->get_fields ) { |
698 | my $field_name = $field->name or next; |
699 | next if $skip_fields{ $field_name }; |
700 | $pk{ $field_name } = 1 if $field->is_primary_key; |
701 | push @{ $common_keys{ $field_name } }, $table->name; |
702 | } |
703 | } |
704 | |
705 | for my $field ( keys %common_keys ) { |
706 | next if $join_pk_only and !defined $pk{ $field }; |
707 | |
708 | my @table_names = @{ $common_keys{ $field } }; |
709 | next unless scalar @table_names > 1; |
710 | |
711 | for my $i ( 0 .. $#table_names ) { |
712 | my $table1 = $self->get_table( $table_names[ $i ] ) or next; |
713 | |
714 | for my $j ( 1 .. $#table_names ) { |
715 | my $table2 = $self->get_table( $table_names[ $j ] ) or next; |
716 | next if $table1->name eq $table2->name; |
717 | |
718 | $table1->add_constraint( |
719 | type => FOREIGN_KEY, |
720 | fields => $field, |
721 | reference_table => $table2->name, |
722 | reference_fields => $field, |
723 | ); |
650f87eb |
724 | } |
9480e70b |
725 | } |
650f87eb |
726 | } |
9480e70b |
727 | |
728 | return 1; |
729 | } |
730 | |
731 | # ---------------------------------------------------------------------- |
99248301 |
732 | sub name { |
733 | |
734 | =pod |
735 | |
736 | =head2 name |
737 | |
738 | Get or set the schema's name. (optional) |
739 | |
740 | my $schema_name = $schema->name('Foo Database'); |
741 | |
742 | =cut |
743 | |
744 | my $self = shift; |
745 | $self->{'name'} = shift if @_; |
746 | return $self->{'name'} || ''; |
747 | } |
748 | |
10f36920 |
749 | =head2 translator |
47fed978 |
750 | |
10f36920 |
751 | get the SQL::Translator instance that instatiated me |
47fed978 |
752 | |
753 | =cut |
754 | |
10f36920 |
755 | sub translator { |
47fed978 |
756 | my $self = shift; |
10f36920 |
757 | $self->{'translator'} = shift if @_; |
758 | return $self->{'translator'}; |
47fed978 |
759 | } |
760 | |
d0b43695 |
761 | # ---------------------------------------------------------------------- |
762 | sub DESTROY { |
763 | my $self = shift; |
764 | undef $_ for values %{ $self->{'tables'} }; |
765 | undef $_ for values %{ $self->{'views'} }; |
766 | } |
767 | |
3c5de62a |
768 | 1; |
769 | |
770 | # ---------------------------------------------------------------------- |
771 | |
772 | =pod |
773 | |
774 | =head1 AUTHOR |
775 | |
776 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt> |
777 | |
778 | =cut |