Commit | Line | Data |
996be9ee |
1 | package DBIx::Class::Schema::Loader::Base; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use base qw/Class::Accessor::Fast/; |
6 | use Class::C3; |
fa994d3c |
7 | use Carp::Clan qw/^DBIx::Class/; |
996be9ee |
8 | use UNIVERSAL::require; |
9 | use DBIx::Class::Schema::Loader::RelBuilder; |
10 | use Data::Dump qw/ dump /; |
11 | use POSIX qw//; |
dd03ee1a |
12 | use File::Spec qw//; |
419a2eeb |
13 | use Cwd qw//; |
7cab3ab7 |
14 | use Digest::MD5 qw//; |
22270947 |
15 | use Lingua::EN::Inflect::Number qw//; |
af31090c |
16 | use File::Temp qw//; |
17 | use Class::Unload; |
996be9ee |
18 | require DBIx::Class; |
19 | |
41ef22da |
20 | our $VERSION = '0.04999_06'; |
32f784fc |
21 | |
996be9ee |
22 | __PACKAGE__->mk_ro_accessors(qw/ |
23 | schema |
24 | schema_class |
25 | |
26 | exclude |
27 | constraint |
28 | additional_classes |
29 | additional_base_classes |
30 | left_base_classes |
31 | components |
32 | resultset_components |
59cfa251 |
33 | skip_relationships |
996be9ee |
34 | moniker_map |
35 | inflect_singular |
36 | inflect_plural |
37 | debug |
38 | dump_directory |
d65cda9e |
39 | dump_overwrite |
28b4691d |
40 | really_erase_my_files |
f44ecc2f |
41 | use_namespaces |
42 | result_namespace |
43 | resultset_namespace |
44 | default_resultset_class |
9c9c2f2b |
45 | schema_base_class |
46 | result_base_class |
996be9ee |
47 | |
996be9ee |
48 | db_schema |
49 | _tables |
50 | classes |
51 | monikers |
52 | /); |
53 | |
54 | =head1 NAME |
55 | |
56 | DBIx::Class::Schema::Loader::Base - Base DBIx::Class::Schema::Loader Implementation. |
57 | |
58 | =head1 SYNOPSIS |
59 | |
60 | See L<DBIx::Class::Schema::Loader> |
61 | |
62 | =head1 DESCRIPTION |
63 | |
64 | This is the base class for the storage-specific C<DBIx::Class::Schema::*> |
65 | classes, and implements the common functionality between them. |
66 | |
67 | =head1 CONSTRUCTOR OPTIONS |
68 | |
69 | These constructor options are the base options for |
29ddb54c |
70 | L<DBIx::Class::Schema::Loader/loader_options>. Available constructor options are: |
3953cbee |
71 | |
59cfa251 |
72 | =head2 skip_relationships |
996be9ee |
73 | |
59cfa251 |
74 | Skip setting up relationships. The default is to attempt the loading |
75 | of relationships. |
996be9ee |
76 | |
77 | =head2 debug |
78 | |
79 | If set to true, each constructive L<DBIx::Class> statement the loader |
80 | decides to execute will be C<warn>-ed before execution. |
81 | |
d65cda9e |
82 | =head2 db_schema |
83 | |
84 | Set the name of the schema to load (schema in the sense that your database |
85 | vendor means it). Does not currently support loading more than one schema |
86 | name. |
87 | |
996be9ee |
88 | =head2 constraint |
89 | |
90 | Only load tables matching regex. Best specified as a qr// regex. |
91 | |
92 | =head2 exclude |
93 | |
94 | Exclude tables matching regex. Best specified as a qr// regex. |
95 | |
96 | =head2 moniker_map |
97 | |
8f9d7ce5 |
98 | Overrides the default table name to moniker translation. Can be either |
99 | a hashref of table keys and moniker values, or a coderef for a translator |
996be9ee |
100 | function taking a single scalar table name argument and returning |
101 | a scalar moniker. If the hash entry does not exist, or the function |
102 | returns a false value, the code falls back to default behavior |
103 | for that table name. |
104 | |
105 | The default behavior is: C<join '', map ucfirst, split /[\W_]+/, lc $table>, |
106 | which is to say: lowercase everything, split up the table name into chunks |
107 | anywhere a non-alpha-numeric character occurs, change the case of first letter |
108 | of each chunk to upper case, and put the chunks back together. Examples: |
109 | |
110 | Table Name | Moniker Name |
111 | --------------------------- |
112 | luser | Luser |
113 | luser_group | LuserGroup |
114 | luser-opts | LuserOpts |
115 | |
116 | =head2 inflect_plural |
117 | |
118 | Just like L</moniker_map> above (can be hash/code-ref, falls back to default |
119 | if hash key does not exist or coderef returns false), but acts as a map |
120 | for pluralizing relationship names. The default behavior is to utilize |
121 | L<Lingua::EN::Inflect::Number/to_PL>. |
122 | |
123 | =head2 inflect_singular |
124 | |
125 | As L</inflect_plural> above, but for singularizing relationship names. |
126 | Default behavior is to utilize L<Lingua::EN::Inflect::Number/to_S>. |
127 | |
9c9c2f2b |
128 | =head2 schema_base_class |
129 | |
130 | Base class for your schema classes. Defaults to 'DBIx::Class::Schema'. |
131 | |
132 | =head2 result_base_class |
133 | |
134 | Base class for your table classes (aka result classes). Defaults to 'DBIx::Class'. |
135 | |
996be9ee |
136 | =head2 additional_base_classes |
137 | |
138 | List of additional base classes all of your table classes will use. |
139 | |
140 | =head2 left_base_classes |
141 | |
142 | List of additional base classes all of your table classes will use |
143 | that need to be leftmost. |
144 | |
145 | =head2 additional_classes |
146 | |
147 | List of additional classes which all of your table classes will use. |
148 | |
149 | =head2 components |
150 | |
151 | List of additional components to be loaded into all of your table |
152 | classes. A good example would be C<ResultSetManager>. |
153 | |
154 | =head2 resultset_components |
155 | |
8f9d7ce5 |
156 | List of additional ResultSet components to be loaded into your table |
996be9ee |
157 | classes. A good example would be C<AlwaysRS>. Component |
158 | C<ResultSetManager> will be automatically added to the above |
159 | C<components> list if this option is set. |
160 | |
f44ecc2f |
161 | =head2 use_namespaces |
162 | |
163 | Generate result class names suitable for |
164 | L<DBIx::Class::Schema/load_namespaces> and call that instead of |
165 | L<DBIx::Class::Schema/load_classes>. When using this option you can also |
166 | specify any of the options for C<load_namespaces> (i.e. C<result_namespace>, |
167 | C<resultset_namespace>, C<default_resultset_class>), and they will be added |
168 | to the call (and the generated result class names adjusted appropriately). |
169 | |
996be9ee |
170 | =head2 dump_directory |
171 | |
172 | This option is designed to be a tool to help you transition from this |
173 | loader to a manually-defined schema when you decide it's time to do so. |
174 | |
175 | The value of this option is a perl libdir pathname. Within |
176 | that directory this module will create a baseline manual |
177 | L<DBIx::Class::Schema> module set, based on what it creates at runtime |
178 | in memory. |
179 | |
180 | The created schema class will have the same classname as the one on |
181 | which you are setting this option (and the ResultSource classes will be |
7cab3ab7 |
182 | based on this name as well). |
996be9ee |
183 | |
8f9d7ce5 |
184 | Normally you wouldn't hard-code this setting in your schema class, as it |
996be9ee |
185 | is meant for one-time manual usage. |
186 | |
187 | See L<DBIx::Class::Schema::Loader/dump_to_dir> for examples of the |
188 | recommended way to access this functionality. |
189 | |
d65cda9e |
190 | =head2 dump_overwrite |
191 | |
28b4691d |
192 | Deprecated. See L</really_erase_my_files> below, which does *not* mean |
193 | the same thing as the old C<dump_overwrite> setting from previous releases. |
194 | |
195 | =head2 really_erase_my_files |
196 | |
7cab3ab7 |
197 | Default false. If true, Loader will unconditionally delete any existing |
198 | files before creating the new ones from scratch when dumping a schema to disk. |
199 | |
200 | The default behavior is instead to only replace the top portion of the |
201 | file, up to and including the final stanza which contains |
202 | C<# DO NOT MODIFY THIS OR ANYTHING ABOVE!> |
203 | leaving any customizations you placed after that as they were. |
204 | |
28b4691d |
205 | When C<really_erase_my_files> is not set, if the output file already exists, |
7cab3ab7 |
206 | but the aforementioned final stanza is not found, or the checksum |
207 | contained there does not match the generated contents, Loader will |
208 | croak and not touch the file. |
d65cda9e |
209 | |
28b4691d |
210 | You should really be using version control on your schema classes (and all |
211 | of the rest of your code for that matter). Don't blame me if a bug in this |
212 | code wipes something out when it shouldn't have, you've been warned. |
213 | |
996be9ee |
214 | =head1 METHODS |
215 | |
216 | None of these methods are intended for direct invocation by regular |
217 | users of L<DBIx::Class::Schema::Loader>. Anything you can find here |
218 | can also be found via standard L<DBIx::Class::Schema> methods somehow. |
219 | |
220 | =cut |
221 | |
222 | # ensure that a peice of object data is a valid arrayref, creating |
223 | # an empty one or encapsulating whatever's there. |
224 | sub _ensure_arrayref { |
225 | my $self = shift; |
226 | |
227 | foreach (@_) { |
228 | $self->{$_} ||= []; |
229 | $self->{$_} = [ $self->{$_} ] |
230 | unless ref $self->{$_} eq 'ARRAY'; |
231 | } |
232 | } |
233 | |
234 | =head2 new |
235 | |
236 | Constructor for L<DBIx::Class::Schema::Loader::Base>, used internally |
237 | by L<DBIx::Class::Schema::Loader>. |
238 | |
239 | =cut |
240 | |
241 | sub new { |
242 | my ( $class, %args ) = @_; |
243 | |
244 | my $self = { %args }; |
245 | |
246 | bless $self => $class; |
247 | |
996be9ee |
248 | $self->_ensure_arrayref(qw/additional_classes |
249 | additional_base_classes |
250 | left_base_classes |
251 | components |
252 | resultset_components |
253 | /); |
254 | |
255 | push(@{$self->{components}}, 'ResultSetManager') |
256 | if @{$self->{resultset_components}}; |
257 | |
258 | $self->{monikers} = {}; |
259 | $self->{classes} = {}; |
260 | |
996be9ee |
261 | $self->{schema_class} ||= ( ref $self->{schema} || $self->{schema} ); |
262 | $self->{schema} ||= $self->{schema_class}; |
263 | |
28b4691d |
264 | croak "dump_overwrite is deprecated. Please read the" |
265 | . " DBIx::Class::Schema::Loader::Base documentation" |
266 | if $self->{dump_overwrite}; |
267 | |
af31090c |
268 | $self->{dynamic} = ! $self->{dump_directory}; |
269 | $self->{dump_directory} ||= File::Temp::tempdir( 'dbicXXXX', |
270 | TMPDIR => 1, |
271 | CLEANUP => 1, |
272 | ); |
273 | |
e8ad6491 |
274 | $self->{relbuilder} = DBIx::Class::Schema::Loader::RelBuilder->new( |
275 | $self->schema_class, $self->inflect_plural, $self->inflect_singular |
276 | ) if !$self->{skip_relationships}; |
277 | |
996be9ee |
278 | $self; |
279 | } |
280 | |
419a2eeb |
281 | sub _find_file_in_inc { |
282 | my ($self, $file) = @_; |
283 | |
284 | foreach my $prefix (@INC) { |
af31090c |
285 | my $fullpath = File::Spec->catfile($prefix, $file); |
286 | return $fullpath if -f $fullpath |
287 | and Cwd::abs_path($fullpath) ne |
288 | Cwd::abs_path(File::Spec->catfile($self->dump_directory, $file)) || ''; |
419a2eeb |
289 | } |
290 | |
291 | return; |
292 | } |
293 | |
996be9ee |
294 | sub _load_external { |
f96ef30f |
295 | my ($self, $class) = @_; |
296 | |
297 | my $class_path = $class; |
298 | $class_path =~ s{::}{/}g; |
299 | $class_path .= '.pm'; |
300 | |
af31090c |
301 | my $real_inc_path = $self->_find_file_in_inc($class_path); |
f96ef30f |
302 | |
af31090c |
303 | return if !$real_inc_path; |
f96ef30f |
304 | |
305 | # If we make it to here, we loaded an external definition |
306 | warn qq/# Loaded external class definition for '$class'\n/ |
307 | if $self->debug; |
308 | |
f96ef30f |
309 | croak 'Failed to locate actual external module file for ' |
310 | . "'$class'" |
311 | if !$real_inc_path; |
312 | open(my $fh, '<', $real_inc_path) |
313 | or croak "Failed to open '$real_inc_path' for reading: $!"; |
314 | $self->_ext_stmt($class, |
565ca24d |
315 | qq|# These lines were loaded from '$real_inc_path' found in \@INC.\n| |
316 | .qq|# They are now part of the custom portion of this file\n| |
317 | .qq|# for you to hand-edit. If you do not either delete\n| |
318 | .qq|# this section or remove that file from \@INC, this section\n| |
319 | .qq|# will be repeated redundantly when you re-create this\n| |
320 | .qq|# file again via Loader!\n| |
f96ef30f |
321 | ); |
322 | while(<$fh>) { |
323 | chomp; |
324 | $self->_ext_stmt($class, $_); |
996be9ee |
325 | } |
f96ef30f |
326 | $self->_ext_stmt($class, |
70b72fab |
327 | qq|# End of lines loaded from '$real_inc_path' | |
f96ef30f |
328 | ); |
329 | close($fh) |
330 | or croak "Failed to close $real_inc_path: $!"; |
996be9ee |
331 | } |
332 | |
333 | =head2 load |
334 | |
335 | Does the actual schema-construction work. |
336 | |
337 | =cut |
338 | |
339 | sub load { |
340 | my $self = shift; |
341 | |
b97c2c1e |
342 | $self->_load_tables($self->_tables_list); |
343 | } |
344 | |
345 | =head2 rescan |
346 | |
a60b5b8d |
347 | Arguments: schema |
348 | |
b97c2c1e |
349 | Rescan the database for newly added tables. Does |
a60b5b8d |
350 | not process drops or changes. Returns a list of |
351 | the newly added table monikers. |
352 | |
353 | The schema argument should be the schema class |
354 | or object to be affected. It should probably |
355 | be derived from the original schema_class used |
356 | during L</load>. |
b97c2c1e |
357 | |
358 | =cut |
359 | |
360 | sub rescan { |
a60b5b8d |
361 | my ($self, $schema) = @_; |
362 | |
363 | $self->{schema} = $schema; |
b97c2c1e |
364 | |
365 | my @created; |
366 | my @current = $self->_tables_list; |
367 | foreach my $table ($self->_tables_list) { |
368 | if(!exists $self->{_tables}->{$table}) { |
369 | push(@created, $table); |
370 | } |
371 | } |
372 | |
c39e3507 |
373 | my $loaded = $self->_load_tables(@created); |
a60b5b8d |
374 | |
c39e3507 |
375 | return map { $self->monikers->{$_} } @$loaded; |
b97c2c1e |
376 | } |
377 | |
378 | sub _load_tables { |
379 | my ($self, @tables) = @_; |
380 | |
f96ef30f |
381 | # First, use _tables_list with constraint and exclude |
382 | # to get a list of tables to operate on |
383 | |
384 | my $constraint = $self->constraint; |
385 | my $exclude = $self->exclude; |
f96ef30f |
386 | |
b97c2c1e |
387 | @tables = grep { /$constraint/ } @tables if $constraint; |
388 | @tables = grep { ! /$exclude/ } @tables if $exclude; |
f96ef30f |
389 | |
b97c2c1e |
390 | # Save the new tables to the tables list |
a60b5b8d |
391 | foreach (@tables) { |
392 | $self->{_tables}->{$_} = 1; |
393 | } |
f96ef30f |
394 | |
af31090c |
395 | $self->_make_src_class($_) for @tables; |
f96ef30f |
396 | $self->_setup_src_meta($_) for @tables; |
397 | |
e8ad6491 |
398 | if(!$self->skip_relationships) { |
181cc907 |
399 | # The relationship loader needs a working schema |
af31090c |
400 | $self->{quiet} = 1; |
181cc907 |
401 | $self->_reload_classes(@tables); |
e8ad6491 |
402 | $self->_load_relationships($_) for @tables; |
af31090c |
403 | $self->{quiet} = 0; |
e8ad6491 |
404 | } |
405 | |
f96ef30f |
406 | $self->_load_external($_) |
75451704 |
407 | for map { $self->classes->{$_} } @tables; |
f96ef30f |
408 | |
181cc907 |
409 | $self->_reload_classes(@tables); |
996be9ee |
410 | |
5223f24a |
411 | # Drop temporary cache |
412 | delete $self->{_cache}; |
413 | |
c39e3507 |
414 | return \@tables; |
996be9ee |
415 | } |
416 | |
af31090c |
417 | sub _reload_classes { |
181cc907 |
418 | my ($self, @tables) = @_; |
419 | |
420 | $self->_dump_to_dir(map { $self->classes->{$_} } @tables); |
e9b8719e |
421 | |
422 | unshift @INC, $self->dump_directory; |
af31090c |
423 | |
181cc907 |
424 | for my $table (@tables) { |
425 | my $moniker = $self->monikers->{$table}; |
426 | my $class = $self->classes->{$table}; |
0ae6b65d |
427 | |
428 | { |
429 | no warnings 'redefine'; |
430 | local *Class::C3::reinitialize = sub {}; |
431 | use warnings; |
432 | |
433 | if ( Class::Unload->unload( $class ) ) { |
434 | my $resultset_class = ref $self->schema->resultset($moniker); |
435 | Class::Unload->unload( $resultset_class ) |
436 | if $resultset_class ne 'DBIx::Class::ResultSet'; |
437 | } |
438 | $class->require or die "Can't load $class: $@"; |
af31090c |
439 | } |
af31090c |
440 | |
441 | $self->schema_class->register_class($moniker, $class); |
442 | $self->schema->register_class($moniker, $class) |
443 | if $self->schema ne $self->schema_class; |
444 | } |
445 | } |
446 | |
996be9ee |
447 | sub _get_dump_filename { |
448 | my ($self, $class) = (@_); |
449 | |
450 | $class =~ s{::}{/}g; |
451 | return $self->dump_directory . q{/} . $class . q{.pm}; |
452 | } |
453 | |
454 | sub _ensure_dump_subdirs { |
455 | my ($self, $class) = (@_); |
456 | |
457 | my @name_parts = split(/::/, $class); |
dd03ee1a |
458 | pop @name_parts; # we don't care about the very last element, |
459 | # which is a filename |
460 | |
996be9ee |
461 | my $dir = $self->dump_directory; |
7cab3ab7 |
462 | while (1) { |
463 | if(!-d $dir) { |
25328cc4 |
464 | mkdir($dir) or croak "mkdir('$dir') failed: $!"; |
996be9ee |
465 | } |
7cab3ab7 |
466 | last if !@name_parts; |
467 | $dir = File::Spec->catdir($dir, shift @name_parts); |
996be9ee |
468 | } |
469 | } |
470 | |
471 | sub _dump_to_dir { |
af31090c |
472 | my ($self, @classes) = @_; |
996be9ee |
473 | |
fc2b71fd |
474 | my $schema_class = $self->schema_class; |
9c9c2f2b |
475 | my $schema_base_class = $self->schema_base_class || 'DBIx::Class::Schema'; |
996be9ee |
476 | |
e9b8719e |
477 | my $target_dir = $self->dump_directory; |
af31090c |
478 | warn "Dumping manual schema for $schema_class to directory $target_dir ...\n" |
479 | unless $self->{dynamic} or $self->{quiet}; |
996be9ee |
480 | |
7cab3ab7 |
481 | my $schema_text = |
482 | qq|package $schema_class;\n\n| |
483 | . qq|use strict;\nuse warnings;\n\n| |
9c9c2f2b |
484 | . qq|use base '$schema_base_class';\n\n|; |
f44ecc2f |
485 | |
f44ecc2f |
486 | if ($self->use_namespaces) { |
487 | $schema_text .= qq|__PACKAGE__->load_namespaces|; |
488 | my $namespace_options; |
489 | for my $attr (qw(result_namespace |
490 | resultset_namespace |
491 | default_resultset_class)) { |
492 | if ($self->$attr) { |
493 | $namespace_options .= qq| $attr => '| . $self->$attr . qq|',\n| |
494 | } |
495 | } |
496 | $schema_text .= qq|(\n$namespace_options)| if $namespace_options; |
497 | $schema_text .= qq|;\n|; |
498 | } |
499 | else { |
500 | $schema_text .= qq|__PACKAGE__->load_classes;\n|; |
f44ecc2f |
501 | } |
996be9ee |
502 | |
7cab3ab7 |
503 | $self->_write_classfile($schema_class, $schema_text); |
996be9ee |
504 | |
9c9c2f2b |
505 | my $result_base_class = $self->result_base_class || 'DBIx::Class'; |
506 | |
af31090c |
507 | foreach my $src_class (@classes) { |
7cab3ab7 |
508 | my $src_text = |
509 | qq|package $src_class;\n\n| |
510 | . qq|use strict;\nuse warnings;\n\n| |
9c9c2f2b |
511 | . qq|use base '$result_base_class';\n\n|; |
996be9ee |
512 | |
7cab3ab7 |
513 | $self->_write_classfile($src_class, $src_text); |
02356864 |
514 | } |
996be9ee |
515 | |
af31090c |
516 | warn "Schema dump completed.\n" unless $self->{dynamic} or $self->{quiet}; |
517 | |
7cab3ab7 |
518 | } |
519 | |
520 | sub _write_classfile { |
521 | my ($self, $class, $text) = @_; |
522 | |
523 | my $filename = $self->_get_dump_filename($class); |
524 | $self->_ensure_dump_subdirs($class); |
525 | |
28b4691d |
526 | if (-f $filename && $self->really_erase_my_files) { |
7cab3ab7 |
527 | warn "Deleting existing file '$filename' due to " |
af31090c |
528 | . "'really_erase_my_files' setting\n" unless $self->{quiet}; |
7cab3ab7 |
529 | unlink($filename); |
530 | } |
531 | |
17ca645f |
532 | my $custom_content = $self->_get_custom_content($class, $filename); |
533 | $custom_content ||= qq|\n\n# You can replace this text with custom| |
534 | . qq| content, and it will be preserved on regeneration| |
535 | . qq|\n1;\n|; |
536 | |
7cab3ab7 |
537 | $text .= qq|$_\n| |
538 | for @{$self->{_dump_storage}->{$class} || []}; |
539 | |
540 | $text .= qq|\n\n# Created by DBIx::Class::Schema::Loader| |
541 | . qq| v| . $DBIx::Class::Schema::Loader::VERSION |
542 | . q| @ | . POSIX::strftime('%Y-%m-%d %H:%M:%S', localtime) |
543 | . qq|\n# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:|; |
544 | |
545 | open(my $fh, '>', $filename) |
546 | or croak "Cannot open '$filename' for writing: $!"; |
547 | |
548 | # Write the top half and its MD5 sum |
a4476f41 |
549 | print $fh $text . Digest::MD5::md5_base64($text) . "\n"; |
7cab3ab7 |
550 | |
551 | # Write out anything loaded via external partial class file in @INC |
552 | print $fh qq|$_\n| |
553 | for @{$self->{_ext_storage}->{$class} || []}; |
554 | |
1eea4fb1 |
555 | # Write out any custom content the user has added |
7cab3ab7 |
556 | print $fh $custom_content; |
557 | |
558 | close($fh) |
e9b8719e |
559 | or croak "Error closing '$filename': $!"; |
7cab3ab7 |
560 | } |
561 | |
562 | sub _get_custom_content { |
563 | my ($self, $class, $filename) = @_; |
564 | |
565 | return if ! -f $filename; |
566 | open(my $fh, '<', $filename) |
567 | or croak "Cannot open '$filename' for reading: $!"; |
568 | |
569 | my $mark_re = |
419a2eeb |
570 | qr{^(# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:)([A-Za-z0-9/+]{22})\n}; |
7cab3ab7 |
571 | |
572 | my $found = 0; |
573 | my $buffer = ''; |
574 | while(<$fh>) { |
575 | if(!$found && /$mark_re/) { |
576 | $found = 1; |
577 | $buffer .= $1; |
7cab3ab7 |
578 | croak "Checksum mismatch in '$filename'" |
419a2eeb |
579 | if Digest::MD5::md5_base64($buffer) ne $2; |
7cab3ab7 |
580 | |
581 | $buffer = ''; |
582 | } |
583 | else { |
584 | $buffer .= $_; |
585 | } |
996be9ee |
586 | } |
587 | |
28b4691d |
588 | croak "Cannot not overwrite '$filename' without 'really_erase_my_files'," |
419a2eeb |
589 | . " it does not appear to have been generated by Loader" |
5ef3c771 |
590 | if !$found; |
591 | |
7cab3ab7 |
592 | return $buffer; |
996be9ee |
593 | } |
594 | |
595 | sub _use { |
596 | my $self = shift; |
597 | my $target = shift; |
598 | |
599 | foreach (@_) { |
cb54990b |
600 | warn "$target: use $_;" if $self->debug; |
996be9ee |
601 | $self->_raw_stmt($target, "use $_;"); |
996be9ee |
602 | } |
603 | } |
604 | |
605 | sub _inject { |
606 | my $self = shift; |
607 | my $target = shift; |
608 | my $schema_class = $self->schema_class; |
609 | |
af31090c |
610 | my $blist = join(q{ }, @_); |
611 | warn "$target: use base qw/ $blist /;" if $self->debug && @_; |
612 | $self->_raw_stmt($target, "use base qw/ $blist /;") if @_; |
996be9ee |
613 | } |
614 | |
f96ef30f |
615 | # Create class with applicable bases, setup monikers, etc |
616 | sub _make_src_class { |
617 | my ($self, $table) = @_; |
996be9ee |
618 | |
a13b2803 |
619 | my $schema = $self->schema; |
620 | my $schema_class = $self->schema_class; |
996be9ee |
621 | |
f96ef30f |
622 | my $table_moniker = $self->_table2moniker($table); |
f44ecc2f |
623 | my @result_namespace = ($schema_class); |
624 | if ($self->use_namespaces) { |
625 | my $result_namespace = $self->result_namespace || 'Result'; |
626 | if ($result_namespace =~ /^\+(.*)/) { |
627 | # Fully qualified namespace |
628 | @result_namespace = ($1) |
629 | } |
630 | else { |
631 | # Relative namespace |
632 | push @result_namespace, $result_namespace; |
633 | } |
634 | } |
635 | my $table_class = join(q{::}, @result_namespace, $table_moniker); |
996be9ee |
636 | |
f96ef30f |
637 | my $table_normalized = lc $table; |
638 | $self->classes->{$table} = $table_class; |
639 | $self->classes->{$table_normalized} = $table_class; |
640 | $self->monikers->{$table} = $table_moniker; |
641 | $self->monikers->{$table_normalized} = $table_moniker; |
996be9ee |
642 | |
f96ef30f |
643 | $self->_use ($table_class, @{$self->additional_classes}); |
af31090c |
644 | $self->_inject($table_class, @{$self->left_base_classes}); |
996be9ee |
645 | |
605fcea8 |
646 | $self->_dbic_stmt($table_class, 'load_components', @{$self->components}, 'Core'); |
996be9ee |
647 | |
f96ef30f |
648 | $self->_dbic_stmt($table_class, 'load_resultset_components', @{$self->resultset_components}) |
649 | if @{$self->resultset_components}; |
af31090c |
650 | $self->_inject($table_class, @{$self->additional_base_classes}); |
f96ef30f |
651 | } |
996be9ee |
652 | |
af31090c |
653 | # Set up metadata (cols, pks, etc) |
f96ef30f |
654 | sub _setup_src_meta { |
655 | my ($self, $table) = @_; |
996be9ee |
656 | |
f96ef30f |
657 | my $schema = $self->schema; |
658 | my $schema_class = $self->schema_class; |
a13b2803 |
659 | |
f96ef30f |
660 | my $table_class = $self->classes->{$table}; |
661 | my $table_moniker = $self->monikers->{$table}; |
996be9ee |
662 | |
f96ef30f |
663 | $self->_dbic_stmt($table_class,'table',$table); |
996be9ee |
664 | |
f96ef30f |
665 | my $cols = $self->_table_columns($table); |
666 | my $col_info; |
667 | eval { $col_info = $self->_columns_info_for($table) }; |
668 | if($@) { |
669 | $self->_dbic_stmt($table_class,'add_columns',@$cols); |
670 | } |
671 | else { |
672 | my %col_info_lc = map { lc($_), $col_info->{$_} } keys %$col_info; |
e7213f4f |
673 | my $fks = $self->_table_fk_info($table); |
674 | for my $fkdef (@$fks) { |
675 | for my $col (@{ $fkdef->{local_columns} }) { |
676 | $col_info_lc{$col}->{is_foreign_key} = 1; |
677 | } |
678 | } |
f96ef30f |
679 | $self->_dbic_stmt( |
680 | $table_class, |
681 | 'add_columns', |
682 | map { $_, ($col_info_lc{$_}||{}) } @$cols |
683 | ); |
996be9ee |
684 | } |
685 | |
d70c335f |
686 | my %uniq_tag; # used to eliminate duplicate uniqs |
687 | |
f96ef30f |
688 | my $pks = $self->_table_pk_info($table) || []; |
689 | @$pks ? $self->_dbic_stmt($table_class,'set_primary_key',@$pks) |
690 | : carp("$table has no primary key"); |
d70c335f |
691 | $uniq_tag{ join("\0", @$pks) }++ if @$pks; # pk is a uniq |
996be9ee |
692 | |
f96ef30f |
693 | my $uniqs = $self->_table_uniq_info($table) || []; |
d70c335f |
694 | for (@$uniqs) { |
695 | my ($name, $cols) = @$_; |
696 | next if $uniq_tag{ join("\0", @$cols) }++; # skip duplicates |
697 | $self->_dbic_stmt($table_class,'add_unique_constraint', $name, $cols); |
698 | } |
699 | |
996be9ee |
700 | } |
701 | |
702 | =head2 tables |
703 | |
704 | Returns a sorted list of loaded tables, using the original database table |
705 | names. |
706 | |
707 | =cut |
708 | |
709 | sub tables { |
710 | my $self = shift; |
711 | |
b97c2c1e |
712 | return keys %{$self->_tables}; |
996be9ee |
713 | } |
714 | |
715 | # Make a moniker from a table |
716 | sub _table2moniker { |
717 | my ( $self, $table ) = @_; |
718 | |
719 | my $moniker; |
720 | |
721 | if( ref $self->moniker_map eq 'HASH' ) { |
722 | $moniker = $self->moniker_map->{$table}; |
723 | } |
724 | elsif( ref $self->moniker_map eq 'CODE' ) { |
725 | $moniker = $self->moniker_map->($table); |
726 | } |
727 | |
22270947 |
728 | $moniker ||= join '', map ucfirst, split /[\W_]+/, |
729 | Lingua::EN::Inflect::Number::to_S(lc $table); |
996be9ee |
730 | |
731 | return $moniker; |
732 | } |
733 | |
734 | sub _load_relationships { |
e8ad6491 |
735 | my ($self, $table) = @_; |
996be9ee |
736 | |
e8ad6491 |
737 | my $tbl_fk_info = $self->_table_fk_info($table); |
738 | foreach my $fkdef (@$tbl_fk_info) { |
739 | $fkdef->{remote_source} = |
740 | $self->monikers->{delete $fkdef->{remote_table}}; |
996be9ee |
741 | } |
26f1c8c9 |
742 | my $tbl_uniq_info = $self->_table_uniq_info($table); |
996be9ee |
743 | |
e8ad6491 |
744 | my $local_moniker = $self->monikers->{$table}; |
26f1c8c9 |
745 | my $rel_stmts = $self->{relbuilder}->generate_code($local_moniker, $tbl_fk_info, $tbl_uniq_info); |
996be9ee |
746 | |
996be9ee |
747 | foreach my $src_class (sort keys %$rel_stmts) { |
748 | my $src_stmts = $rel_stmts->{$src_class}; |
749 | foreach my $stmt (@$src_stmts) { |
750 | $self->_dbic_stmt($src_class,$stmt->{method},@{$stmt->{args}}); |
751 | } |
752 | } |
753 | } |
754 | |
755 | # Overload these in driver class: |
756 | |
757 | # Returns an arrayref of column names |
758 | sub _table_columns { croak "ABSTRACT METHOD" } |
759 | |
760 | # Returns arrayref of pk col names |
761 | sub _table_pk_info { croak "ABSTRACT METHOD" } |
762 | |
763 | # Returns an arrayref of uniqs [ [ foo => [ col1, col2 ] ], [ bar => [ ... ] ] ] |
764 | sub _table_uniq_info { croak "ABSTRACT METHOD" } |
765 | |
766 | # Returns an arrayref of foreign key constraints, each |
767 | # being a hashref with 3 keys: |
768 | # local_columns (arrayref), remote_columns (arrayref), remote_table |
769 | sub _table_fk_info { croak "ABSTRACT METHOD" } |
770 | |
771 | # Returns an array of lower case table names |
772 | sub _tables_list { croak "ABSTRACT METHOD" } |
773 | |
774 | # Execute a constructive DBIC class method, with debug/dump_to_dir hooks. |
775 | sub _dbic_stmt { |
776 | my $self = shift; |
777 | my $class = shift; |
778 | my $method = shift; |
779 | |
996be9ee |
780 | my $args = dump(@_); |
781 | $args = '(' . $args . ')' if @_ < 2; |
782 | my $stmt = $method . $args . q{;}; |
783 | |
784 | warn qq|$class\->$stmt\n| if $self->debug; |
996be9ee |
785 | $self->_raw_stmt($class, '__PACKAGE__->' . $stmt); |
786 | } |
787 | |
788 | # Store a raw source line for a class (for dumping purposes) |
789 | sub _raw_stmt { |
790 | my ($self, $class, $stmt) = @_; |
af31090c |
791 | push(@{$self->{_dump_storage}->{$class}}, $stmt); |
996be9ee |
792 | } |
793 | |
7cab3ab7 |
794 | # Like above, but separately for the externally loaded stuff |
795 | sub _ext_stmt { |
796 | my ($self, $class, $stmt) = @_; |
af31090c |
797 | push(@{$self->{_ext_storage}->{$class}}, $stmt); |
7cab3ab7 |
798 | } |
799 | |
996be9ee |
800 | =head2 monikers |
801 | |
8f9d7ce5 |
802 | Returns a hashref of loaded table to moniker mappings. There will |
996be9ee |
803 | be two entries for each table, the original name and the "normalized" |
804 | name, in the case that the two are different (such as databases |
805 | that like uppercase table names, or preserve your original mixed-case |
806 | definitions, or what-have-you). |
807 | |
808 | =head2 classes |
809 | |
8f9d7ce5 |
810 | Returns a hashref of table to class mappings. In some cases it will |
996be9ee |
811 | contain multiple entries per table for the original and normalized table |
812 | names, as above in L</monikers>. |
813 | |
814 | =head1 SEE ALSO |
815 | |
816 | L<DBIx::Class::Schema::Loader> |
817 | |
818 | =cut |
819 | |
820 | 1; |