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1 | package SQL::Translator::Schema; |
2 | |
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3 | # vim: sw=4: ts=4: |
4 | |
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5 | # ---------------------------------------------------------------------- |
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6 | # $Id: Schema.pm,v 1.22 2005-06-07 16:55:41 kycl4rk Exp $ |
3c5de62a |
7 | # ---------------------------------------------------------------------- |
977651a5 |
8 | # Copyright (C) 2002-4 SQLFairy Authors |
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9 | # |
10 | # This program is free software; you can redistribute it and/or |
11 | # modify it under the terms of the GNU General Public License as |
12 | # published by the Free Software Foundation; version 2. |
13 | # |
14 | # This program is distributed in the hope that it will be useful, but |
15 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | # General Public License for more details. |
18 | # |
19 | # You should have received a copy of the GNU General Public License |
20 | # along with this program; if not, write to the Free Software |
21 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
22 | # 02111-1307 USA |
23 | # ------------------------------------------------------------------- |
24 | |
25 | =pod |
26 | |
27 | =head1 NAME |
28 | |
29 | SQL::Translator::Schema - SQL::Translator schema object |
30 | |
31 | =head1 SYNOPSIS |
32 | |
33 | use SQL::Translator::Schema; |
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34 | my $schema = SQL::Translator::Schema->new( |
35 | name => 'Foo', |
36 | database => 'MySQL', |
37 | ); |
38 | my $table = $schema->add_table( name => 'foo' ); |
39 | my $view = $schema->add_view( name => 'bar', sql => '...' ); |
40 | |
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41 | |
42 | =head1 DESCSIPTION |
43 | |
44 | C<SQL::Translator::Schema> is the object that accepts, validates, and |
45 | returns the database structure. |
46 | |
47 | =head1 METHODS |
48 | |
49 | =cut |
50 | |
51 | use strict; |
9480e70b |
52 | use SQL::Translator::Schema::Constants; |
daf24e05 |
53 | use SQL::Translator::Schema::Procedure; |
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54 | use SQL::Translator::Schema::Table; |
5974bee7 |
55 | use SQL::Translator::Schema::Trigger; |
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56 | use SQL::Translator::Schema::View; |
b046b0b9 |
57 | use SQL::Translator::Schema::Graph; |
5974bee7 |
58 | use SQL::Translator::Utils 'parse_list_arg'; |
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59 | |
b6a880d1 |
60 | use base 'SQL::Translator::Schema::Object'; |
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61 | use vars qw[ $VERSION $TABLE_ORDER $VIEW_ORDER $TRIGGER_ORDER $PROC_ORDER ]; |
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62 | |
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63 | $VERSION = sprintf "%d.%02d", q$Revision: 1.22 $ =~ /(\d+)\.(\d+)/; |
9371be50 |
64 | |
65 | __PACKAGE__->_attributes( qw/name database translator/ ); |
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66 | |
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67 | # ---------------------------------------------------------------------- |
68 | sub as_graph { |
69 | |
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70 | =pod |
71 | |
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72 | =head2 as_graph |
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73 | |
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74 | Returns the schema as an L<SQL::Translator::Schema::Graph> object. |
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75 | |
76 | =cut |
77 | |
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78 | my $self = @_; |
79 | return SQL::Translator::Schema::Graph->new( |
80 | translator => $self->translator |
81 | ); |
10f36920 |
82 | } |
83 | |
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84 | # ---------------------------------------------------------------------- |
76dce619 |
85 | sub add_table { |
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86 | |
87 | =pod |
88 | |
76dce619 |
89 | =head2 add_table |
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90 | |
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91 | Add a table object. Returns the new SQL::Translator::Schema::Table object. |
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92 | The "name" parameter is required. If you try to create a table with the |
93 | same name as an existing table, you will get an error and the table will |
94 | not be created. |
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95 | |
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96 | my $t1 = $schema->add_table( name => 'foo' ) or die $schema->error; |
97 | my $t2 = SQL::Translator::Schema::Table->new( name => 'bar' ); |
98 | $t2 = $schema->add_table( $table_bar ) or die $schema->error; |
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99 | |
100 | =cut |
101 | |
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102 | my $self = shift; |
103 | my $table_class = 'SQL::Translator::Schema::Table'; |
104 | my $table; |
105 | |
106 | if ( UNIVERSAL::isa( $_[0], $table_class ) ) { |
107 | $table = shift; |
108 | $table->schema( $self ); |
109 | } |
110 | else { |
111 | my %args = @_; |
112 | $args{'schema'} = $self; |
113 | $table = $table_class->new( \%args ) or return |
114 | $self->error( $table_class->error ); |
115 | } |
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116 | |
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117 | $table->order( ++$TABLE_ORDER ); |
23044758 |
118 | # We know we have a name as the Table->new above errors if none given. |
119 | my $table_name = $table->name; |
99248301 |
120 | |
121 | if ( defined $self->{'tables'}{ $table_name } ) { |
122 | return $self->error(qq[Can't create table: "$table_name" exists]); |
123 | } |
124 | else { |
125 | $self->{'tables'}{ $table_name } = $table; |
99248301 |
126 | } |
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127 | |
128 | return $table; |
129 | } |
130 | |
131 | # ---------------------------------------------------------------------- |
650f87eb |
132 | sub drop_table { |
133 | |
134 | =pod |
135 | |
136 | =head2 drop_table |
137 | |
138 | Remove a table from the schema. Returns the table object if the table was found |
139 | and removed, an error otherwise. The single parameter can be either a table |
140 | name or an C<SQL::Translator::Schema::Table> object. The "cascade" parameter |
141 | can be set to 1 to also drop all triggers on the table, default is 0. |
142 | |
143 | $schema->drop_table('mytable'); |
144 | $schema->drop_table('mytable', cascade => 1); |
145 | |
146 | =cut |
147 | |
148 | my $self = shift; |
149 | my $table_class = 'SQL::Translator::Schema::Table'; |
150 | my $table_name; |
151 | |
152 | if ( UNIVERSAL::isa( $_[0], $table_class ) ) { |
153 | $table_name = shift->name; |
154 | } |
155 | else { |
156 | $table_name = shift; |
157 | } |
158 | my %args = @_; |
159 | my $cascade = $args{'cascade'}; |
160 | |
161 | if ( ! exists $self->{'tables'}{ $table_name } ) { |
162 | return $self->error(qq[Can't drop table: $table_name" doesn't exist]); |
163 | } |
164 | |
165 | my $table = delete $self->{'tables'}{ $table_name }; |
166 | |
167 | if ( $cascade ) { |
168 | # Drop all triggers on this table |
169 | $self->drop_trigger() for (grep { $_->on_table eq $table_name } |
170 | @{ $self->{'triggers'}} |
171 | ); |
172 | } |
173 | return $table; |
174 | } |
175 | |
176 | # ---------------------------------------------------------------------- |
daf24e05 |
177 | sub add_procedure { |
178 | |
179 | =pod |
180 | |
181 | =head2 add_procedure |
182 | |
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183 | Add a procedure object. Returns the new SQL::Translator::Schema::Procedure |
184 | object. The "name" parameter is required. If you try to create a procedure |
185 | with the same name as an existing procedure, you will get an error and the |
186 | procedure will not be created. |
daf24e05 |
187 | |
188 | my $p1 = $schema->add_procedure( name => 'foo' ); |
189 | my $p2 = SQL::Translator::Schema::Procedure->new( name => 'bar' ); |
190 | $p2 = $schema->add_procedure( $procedure_bar ) or die $schema->error; |
191 | |
192 | =cut |
193 | |
194 | my $self = shift; |
195 | my $procedure_class = 'SQL::Translator::Schema::Procedure'; |
196 | my $procedure; |
197 | |
198 | if ( UNIVERSAL::isa( $_[0], $procedure_class ) ) { |
199 | $procedure = shift; |
200 | $procedure->schema( $self ); |
201 | } |
202 | else { |
203 | my %args = @_; |
204 | $args{'schema'} = $self; |
205 | return $self->error('No procedure name') unless $args{'name'}; |
206 | $procedure = $procedure_class->new( \%args ) or |
207 | return $self->error( $procedure_class->error ); |
208 | } |
209 | |
210 | $procedure->order( ++$PROC_ORDER ); |
211 | my $procedure_name = $procedure->name or return |
212 | $self->error('No procedure name'); |
213 | |
214 | if ( defined $self->{'procedures'}{ $procedure_name } ) { |
215 | return $self->error( |
216 | qq[Can't create procedure: "$procedure_name" exists] |
217 | ); |
218 | } |
219 | else { |
220 | $self->{'procedures'}{ $procedure_name } = $procedure; |
221 | } |
222 | |
223 | return $procedure; |
224 | } |
650f87eb |
225 | # ---------------------------------------------------------------------- |
226 | sub drop_procedure { |
227 | |
228 | =pod |
229 | |
230 | =head2 drop_procedure |
231 | |
232 | Remove a procedure from the schema. Returns the procedure object if the |
233 | procedure was found and removed, an error otherwise. The single parameter |
234 | can be either a procedure name or an C<SQL::Translator::Schema::Procedure> |
235 | object. |
236 | |
237 | $schema->drop_procedure('myprocedure'); |
238 | |
239 | =cut |
240 | |
241 | my $self = shift; |
242 | my $proc_class = 'SQL::Translator::Schema::Procedure'; |
243 | my $proc_name; |
244 | |
245 | if ( UNIVERSAL::isa( $_[0], $proc_class ) ) { |
246 | $proc_name = shift->name; |
247 | } |
248 | else { |
249 | $proc_name = shift; |
250 | } |
251 | |
252 | if ( ! exists $self->{'procedures'}{ $proc_name } ) { |
253 | return $self->error(qq[Can't drop procedure: $proc_name" doesn't exist]); |
254 | } |
255 | |
256 | my $proc = delete $self->{'procedures'}{ $proc_name }; |
257 | |
258 | return $proc; |
259 | } |
daf24e05 |
260 | |
261 | # ---------------------------------------------------------------------- |
5974bee7 |
262 | sub add_trigger { |
263 | |
264 | =pod |
265 | |
266 | =head2 add_trigger |
267 | |
268 | Add a trigger object. Returns the new SQL::Translator::Schema::Trigger object. |
269 | The "name" parameter is required. If you try to create a trigger with the |
270 | same name as an existing trigger, you will get an error and the trigger will |
271 | not be created. |
272 | |
273 | my $t1 = $schema->add_trigger( name => 'foo' ); |
274 | my $t2 = SQL::Translator::Schema::Trigger->new( name => 'bar' ); |
275 | $t2 = $schema->add_trigger( $trigger_bar ) or die $schema->error; |
276 | |
277 | =cut |
278 | |
279 | my $self = shift; |
280 | my $trigger_class = 'SQL::Translator::Schema::Trigger'; |
281 | my $trigger; |
282 | |
283 | if ( UNIVERSAL::isa( $_[0], $trigger_class ) ) { |
284 | $trigger = shift; |
daf24e05 |
285 | $trigger->schema( $self ); |
5974bee7 |
286 | } |
287 | else { |
288 | my %args = @_; |
daf24e05 |
289 | $args{'schema'} = $self; |
5974bee7 |
290 | return $self->error('No trigger name') unless $args{'name'}; |
291 | $trigger = $trigger_class->new( \%args ) or |
292 | return $self->error( $trigger_class->error ); |
293 | } |
294 | |
295 | $trigger->order( ++$TRIGGER_ORDER ); |
296 | my $trigger_name = $trigger->name or return $self->error('No trigger name'); |
297 | |
298 | if ( defined $self->{'triggers'}{ $trigger_name } ) { |
299 | return $self->error(qq[Can't create trigger: "$trigger_name" exists]); |
300 | } |
301 | else { |
302 | $self->{'triggers'}{ $trigger_name } = $trigger; |
303 | } |
304 | |
305 | return $trigger; |
306 | } |
650f87eb |
307 | # ---------------------------------------------------------------------- |
308 | sub drop_trigger { |
309 | |
310 | =pod |
311 | |
312 | =head2 drop_trigger |
313 | |
314 | Remove a trigger from the schema. Returns the trigger object if the trigger was |
315 | found and removed, an error otherwise. The single parameter can be either a |
316 | trigger name or an C<SQL::Translator::Schema::Trigger> object. |
317 | |
318 | $schema->drop_trigger('mytrigger'); |
319 | |
320 | =cut |
321 | |
322 | my $self = shift; |
323 | my $trigger_class = 'SQL::Translator::Schema::Trigger'; |
324 | my $trigger_name; |
325 | |
326 | if ( UNIVERSAL::isa( $_[0], $trigger_class ) ) { |
327 | $trigger_name = shift->name; |
328 | } |
329 | else { |
330 | $trigger_name = shift; |
331 | } |
332 | |
333 | if ( ! exists $self->{'triggers'}{ $trigger_name } ) { |
334 | return $self->error(qq[Can't drop trigger: $trigger_name" doesn't exist]); |
335 | } |
336 | |
337 | my $trigger = delete $self->{'triggers'}{ $trigger_name }; |
338 | |
339 | return $trigger; |
340 | } |
5974bee7 |
341 | |
342 | # ---------------------------------------------------------------------- |
76dce619 |
343 | sub add_view { |
3c5de62a |
344 | |
345 | =pod |
346 | |
76dce619 |
347 | =head2 add_view |
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348 | |
76dce619 |
349 | Add a view object. Returns the new SQL::Translator::Schema::View object. |
99248301 |
350 | The "name" parameter is required. If you try to create a view with the |
351 | same name as an existing view, you will get an error and the view will |
352 | not be created. |
353 | |
68e8e2e1 |
354 | my $v1 = $schema->add_view( name => 'foo' ); |
355 | my $v2 = SQL::Translator::Schema::View->new( name => 'bar' ); |
356 | $v2 = $schema->add_view( $view_bar ) or die $schema->error; |
3c5de62a |
357 | |
358 | =cut |
359 | |
99248301 |
360 | my $self = shift; |
361 | my $view_class = 'SQL::Translator::Schema::View'; |
362 | my $view; |
363 | |
364 | if ( UNIVERSAL::isa( $_[0], $view_class ) ) { |
365 | $view = shift; |
daf24e05 |
366 | $view->schema( $self ); |
99248301 |
367 | } |
368 | else { |
369 | my %args = @_; |
daf24e05 |
370 | $args{'schema'} = $self; |
99248301 |
371 | return $self->error('No view name') unless $args{'name'}; |
372 | $view = $view_class->new( \%args ) or return $view_class->error; |
373 | } |
3c5de62a |
374 | |
d0b43695 |
375 | $view->order( ++$VIEW_ORDER ); |
99248301 |
376 | my $view_name = $view->name or return $self->error('No view name'); |
377 | |
378 | if ( defined $self->{'views'}{ $view_name } ) { |
379 | return $self->error(qq[Can't create view: "$view_name" exists]); |
380 | } |
381 | else { |
382 | $self->{'views'}{ $view_name } = $view; |
99248301 |
383 | } |
3c5de62a |
384 | |
76dce619 |
385 | return $view; |
3c5de62a |
386 | } |
387 | |
388 | # ---------------------------------------------------------------------- |
650f87eb |
389 | sub drop_view { |
390 | |
391 | =pod |
392 | |
393 | =head2 drop_view |
394 | |
395 | Remove a view from the schema. Returns the view object if the view was found |
396 | and removed, an error otherwise. The single parameter can be either a view |
397 | name or an C<SQL::Translator::Schema::View> object. |
398 | |
399 | $schema->drop_view('myview'); |
400 | |
401 | =cut |
402 | |
403 | my $self = shift; |
404 | my $view_class = 'SQL::Translator::Schema::View'; |
405 | my $view_name; |
406 | |
407 | if ( UNIVERSAL::isa( $_[0], $view_class ) ) { |
408 | $view_name = shift->name; |
409 | } |
410 | else { |
411 | $view_name = shift; |
412 | } |
413 | |
414 | if ( ! exists $self->{'views'}{ $view_name } ) { |
415 | return $self->error(qq[Can't drop view: $view_name" doesn't exist]); |
416 | } |
417 | |
418 | my $view = delete $self->{'views'}{ $view_name }; |
419 | |
420 | return $view; |
421 | } |
422 | |
423 | # ---------------------------------------------------------------------- |
99248301 |
424 | sub database { |
425 | |
426 | =pod |
427 | |
428 | =head2 database |
429 | |
430 | Get or set the schema's database. (optional) |
431 | |
432 | my $database = $schema->database('PostgreSQL'); |
433 | |
434 | =cut |
435 | |
436 | my $self = shift; |
437 | $self->{'database'} = shift if @_; |
438 | return $self->{'database'} || ''; |
439 | } |
440 | |
441 | # ---------------------------------------------------------------------- |
76dce619 |
442 | sub is_valid { |
3c5de62a |
443 | |
444 | =pod |
445 | |
76dce619 |
446 | =head2 is_valid |
3c5de62a |
447 | |
76dce619 |
448 | Returns true if all the tables and views are valid. |
3c5de62a |
449 | |
76dce619 |
450 | my $ok = $schema->is_valid or die $schema->error; |
451 | |
452 | =cut |
453 | |
454 | my $self = shift; |
455 | |
456 | return $self->error('No tables') unless $self->get_tables; |
457 | |
458 | for my $object ( $self->get_tables, $self->get_views ) { |
459 | return $object->error unless $object->is_valid; |
460 | } |
461 | |
462 | return 1; |
463 | } |
464 | |
465 | # ---------------------------------------------------------------------- |
daf24e05 |
466 | sub get_procedure { |
467 | |
468 | =pod |
469 | |
470 | =head2 get_procedure |
471 | |
472 | Returns a procedure by the name provided. |
473 | |
474 | my $procedure = $schema->get_procedure('foo'); |
475 | |
476 | =cut |
477 | |
478 | my $self = shift; |
479 | my $procedure_name = shift or return $self->error('No procedure name'); |
480 | return $self->error( qq[Table "$procedure_name" does not exist] ) unless |
481 | exists $self->{'procedures'}{ $procedure_name }; |
482 | return $self->{'procedures'}{ $procedure_name }; |
483 | } |
484 | |
485 | # ---------------------------------------------------------------------- |
486 | sub get_procedures { |
487 | |
488 | =pod |
489 | |
490 | =head2 get_procedures |
491 | |
492 | Returns all the procedures as an array or array reference. |
493 | |
494 | my @procedures = $schema->get_procedures; |
495 | |
496 | =cut |
497 | |
498 | my $self = shift; |
499 | my @procedures = |
500 | map { $_->[1] } |
501 | sort { $a->[0] <=> $b->[0] } |
502 | map { [ $_->order, $_ ] } |
503 | values %{ $self->{'procedures'} }; |
504 | |
505 | if ( @procedures ) { |
506 | return wantarray ? @procedures : \@procedures; |
507 | } |
508 | else { |
509 | $self->error('No procedures'); |
510 | return wantarray ? () : undef; |
511 | } |
512 | } |
513 | |
514 | # ---------------------------------------------------------------------- |
76dce619 |
515 | sub get_table { |
516 | |
517 | =pod |
518 | |
519 | =head2 get_table |
520 | |
521 | Returns a table by the name provided. |
522 | |
523 | my $table = $schema->get_table('foo'); |
524 | |
525 | =cut |
526 | |
527 | my $self = shift; |
528 | my $table_name = shift or return $self->error('No table name'); |
99248301 |
529 | return $self->error( qq[Table "$table_name" does not exist] ) unless |
76dce619 |
530 | exists $self->{'tables'}{ $table_name }; |
531 | return $self->{'tables'}{ $table_name }; |
532 | } |
533 | |
534 | # ---------------------------------------------------------------------- |
535 | sub get_tables { |
536 | |
537 | =pod |
538 | |
539 | =head2 get_tables |
540 | |
541 | Returns all the tables as an array or array reference. |
542 | |
543 | my @tables = $schema->get_tables; |
544 | |
545 | =cut |
546 | |
547 | my $self = shift; |
d0b43695 |
548 | my @tables = |
549 | map { $_->[1] } |
550 | sort { $a->[0] <=> $b->[0] } |
551 | map { [ $_->order, $_ ] } |
76dce619 |
552 | values %{ $self->{'tables'} }; |
553 | |
554 | if ( @tables ) { |
555 | return wantarray ? @tables : \@tables; |
556 | } |
557 | else { |
558 | $self->error('No tables'); |
559 | return wantarray ? () : undef; |
560 | } |
561 | } |
562 | |
563 | # ---------------------------------------------------------------------- |
daf24e05 |
564 | sub get_trigger { |
565 | |
566 | =pod |
567 | |
568 | =head2 get_trigger |
569 | |
570 | Returns a trigger by the name provided. |
571 | |
572 | my $trigger = $schema->get_trigger('foo'); |
573 | |
574 | =cut |
575 | |
576 | my $self = shift; |
577 | my $trigger_name = shift or return $self->error('No trigger name'); |
578 | return $self->error( qq[Table "$trigger_name" does not exist] ) unless |
579 | exists $self->{'triggers'}{ $trigger_name }; |
580 | return $self->{'triggers'}{ $trigger_name }; |
581 | } |
582 | |
583 | # ---------------------------------------------------------------------- |
584 | sub get_triggers { |
585 | |
586 | =pod |
587 | |
588 | =head2 get_triggers |
589 | |
590 | Returns all the triggers as an array or array reference. |
591 | |
592 | my @triggers = $schema->get_triggers; |
593 | |
594 | =cut |
595 | |
596 | my $self = shift; |
597 | my @triggers = |
598 | map { $_->[1] } |
599 | sort { $a->[0] <=> $b->[0] } |
600 | map { [ $_->order, $_ ] } |
601 | values %{ $self->{'triggers'} }; |
602 | |
603 | if ( @triggers ) { |
604 | return wantarray ? @triggers : \@triggers; |
605 | } |
606 | else { |
607 | $self->error('No triggers'); |
608 | return wantarray ? () : undef; |
609 | } |
610 | } |
611 | |
612 | # ---------------------------------------------------------------------- |
76dce619 |
613 | sub get_view { |
614 | |
615 | =pod |
616 | |
617 | =head2 get_view |
618 | |
619 | Returns a view by the name provided. |
620 | |
621 | my $view = $schema->get_view('foo'); |
3c5de62a |
622 | |
623 | =cut |
624 | |
625 | my $self = shift; |
76dce619 |
626 | my $view_name = shift or return $self->error('No view name'); |
627 | return $self->error('View "$view_name" does not exist') unless |
628 | exists $self->{'views'}{ $view_name }; |
629 | return $self->{'views'}{ $view_name }; |
630 | } |
3c5de62a |
631 | |
76dce619 |
632 | # ---------------------------------------------------------------------- |
633 | sub get_views { |
3c5de62a |
634 | |
76dce619 |
635 | =pod |
636 | |
637 | =head2 get_views |
638 | |
639 | Returns all the views as an array or array reference. |
640 | |
641 | my @views = $schema->get_views; |
642 | |
643 | =cut |
644 | |
645 | my $self = shift; |
d0b43695 |
646 | my @views = |
647 | map { $_->[1] } |
648 | sort { $a->[0] <=> $b->[0] } |
649 | map { [ $_->order, $_ ] } |
99248301 |
650 | values %{ $self->{'views'} }; |
76dce619 |
651 | |
652 | if ( @views ) { |
653 | return wantarray ? @views : \@views; |
654 | } |
655 | else { |
656 | $self->error('No views'); |
657 | return wantarray ? () : undef; |
658 | } |
3c5de62a |
659 | } |
660 | |
99248301 |
661 | # ---------------------------------------------------------------------- |
9480e70b |
662 | sub make_natural_joins { |
663 | |
664 | =pod |
665 | |
666 | =head2 make_natural_joins |
667 | |
668 | Creates foriegn key relationships among like-named fields in different |
669 | tables. Accepts the following arguments: |
670 | |
671 | =over 4 |
672 | |
650f87eb |
673 | =item * join_pk_only |
9480e70b |
674 | |
675 | A True or False argument which determins whether or not to perform |
676 | the joins from primary keys to fields of the same name in other tables |
677 | |
678 | =item * skip_fields |
679 | |
680 | A list of fields to skip in the joins |
681 | |
682 | =back 4 |
683 | |
684 | $schema->make_natural_joins( |
685 | join_pk_only => 1, |
686 | skip_fields => 'name,department_id', |
687 | ); |
688 | |
689 | =cut |
690 | |
691 | my $self = shift; |
692 | my %args = @_; |
693 | my $join_pk_only = $args{'join_pk_only'} || 0; |
40c522c6 |
694 | my %skip_fields = map { s/^\s+|\s+$//g; $_, 1 } @{ |
695 | parse_list_arg( $args{'skip_fields'} ) |
696 | }; |
9480e70b |
697 | |
698 | my ( %common_keys, %pk ); |
699 | for my $table ( $self->get_tables ) { |
700 | for my $field ( $table->get_fields ) { |
701 | my $field_name = $field->name or next; |
702 | next if $skip_fields{ $field_name }; |
703 | $pk{ $field_name } = 1 if $field->is_primary_key; |
704 | push @{ $common_keys{ $field_name } }, $table->name; |
705 | } |
706 | } |
707 | |
708 | for my $field ( keys %common_keys ) { |
709 | next if $join_pk_only and !defined $pk{ $field }; |
710 | |
711 | my @table_names = @{ $common_keys{ $field } }; |
712 | next unless scalar @table_names > 1; |
713 | |
714 | for my $i ( 0 .. $#table_names ) { |
715 | my $table1 = $self->get_table( $table_names[ $i ] ) or next; |
716 | |
717 | for my $j ( 1 .. $#table_names ) { |
718 | my $table2 = $self->get_table( $table_names[ $j ] ) or next; |
719 | next if $table1->name eq $table2->name; |
720 | |
721 | $table1->add_constraint( |
722 | type => FOREIGN_KEY, |
723 | fields => $field, |
724 | reference_table => $table2->name, |
725 | reference_fields => $field, |
726 | ); |
650f87eb |
727 | } |
9480e70b |
728 | } |
650f87eb |
729 | } |
9480e70b |
730 | |
731 | return 1; |
732 | } |
733 | |
734 | # ---------------------------------------------------------------------- |
99248301 |
735 | sub name { |
736 | |
737 | =pod |
738 | |
739 | =head2 name |
740 | |
741 | Get or set the schema's name. (optional) |
742 | |
743 | my $schema_name = $schema->name('Foo Database'); |
744 | |
745 | =cut |
746 | |
747 | my $self = shift; |
748 | $self->{'name'} = shift if @_; |
749 | return $self->{'name'} || ''; |
750 | } |
751 | |
97382c6d |
752 | # ---------------------------------------------------------------------- |
753 | sub translator { |
754 | |
755 | =pod |
756 | |
10f36920 |
757 | =head2 translator |
47fed978 |
758 | |
97382c6d |
759 | Get the SQL::Translator instance that instantiated the parser. |
47fed978 |
760 | |
761 | =cut |
762 | |
47fed978 |
763 | my $self = shift; |
10f36920 |
764 | $self->{'translator'} = shift if @_; |
765 | return $self->{'translator'}; |
47fed978 |
766 | } |
767 | |
d0b43695 |
768 | # ---------------------------------------------------------------------- |
769 | sub DESTROY { |
770 | my $self = shift; |
771 | undef $_ for values %{ $self->{'tables'} }; |
772 | undef $_ for values %{ $self->{'views'} }; |
773 | } |
774 | |
3c5de62a |
775 | 1; |
776 | |
777 | # ---------------------------------------------------------------------- |
778 | |
779 | =pod |
780 | |
781 | =head1 AUTHOR |
782 | |
97382c6d |
783 | Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>. |
3c5de62a |
784 | |
785 | =cut |