1 package DBIx::Class::Schema::Loader::Base;
5 use base qw/Class::Accessor::Grouped Class::C3::Componentised/;
7 use Carp::Clan qw/^DBIx::Class/;
8 use DBIx::Class::Schema::Loader::RelBuilder;
9 use Data::Dump qw/ dump /;
14 use Lingua::EN::Inflect::Number qw//;
19 our $VERSION = '0.04999_13';
21 __PACKAGE__->mk_group_ro_accessors('simple', qw/
28 additional_base_classes
43 default_resultset_class
46 overwrite_modifications
60 __PACKAGE__->mk_group_accessors('simple', qw/
62 schema_version_to_dump
64 _upgrading_from_load_classes
70 DBIx::Class::Schema::Loader::Base - Base DBIx::Class::Schema::Loader Implementation.
74 See L<DBIx::Class::Schema::Loader>
78 This is the base class for the storage-specific C<DBIx::Class::Schema::*>
79 classes, and implements the common functionality between them.
81 =head1 CONSTRUCTOR OPTIONS
83 These constructor options are the base options for
84 L<DBIx::Class::Schema::Loader/loader_options>. Available constructor options are:
86 =head2 skip_relationships
88 Skip setting up relationships. The default is to attempt the loading
91 =head2 skip_load_external
93 Skip loading of other classes in @INC. The default is to merge all other classes
94 with the same name found in @INC into the schema file we are creating.
98 Static schemas (ones dumped to disk) will, by default, use the new-style 0.05XXX
99 relationship names and singularized Results, unless you're overwriting an
100 existing dump made by a 0.04XXX version of L<DBIx::Class::Schema::Loader>, in
101 which case the backward compatible RelBuilder will be activated, and
102 singularization will be turned off.
108 will disable the backward-compatible RelBuilder and use
109 the new-style relationship names along with singularized Results, even when
110 overwriting a dump made with an earlier version.
112 The option also takes a hashref:
114 naming => { relationships => 'v5', monikers => 'v4' }
122 How to name relationship accessors.
126 How to name Result classes.
136 Latest default style, whatever that happens to be.
140 Version 0.05XXX style.
144 Version 0.04XXX style.
148 Dynamic schemas will always default to the 0.04XXX relationship names and won't
149 singularize Results for backward compatibility, to activate the new RelBuilder
150 and singularization put this in your C<Schema.pm> file:
152 __PACKAGE__->naming('current');
154 Or if you prefer to use 0.05XXX features but insure that nothing breaks in the
155 next major version upgrade:
157 __PACKAGE__->naming('v5');
159 =head2 relationship_attrs
161 Hashref of attributes to pass to each generated relationship, listed
162 by type. Also supports relationship type 'all', containing options to
163 pass to all generated relationships. Attributes set for more specific
164 relationship types override those set in 'all'.
168 relationship_attrs => {
169 all => { cascade_delete => 0 },
170 has_many => { cascade_delete => 1 },
173 will set the C<cascade_delete> option to 0 for all generated relationships,
174 except for C<has_many>, which will have cascade_delete as 1.
176 NOTE: this option is not supported if v4 backward-compatible naming is
177 set either globally (naming => 'v4') or just for relationships.
181 If set to true, each constructive L<DBIx::Class> statement the loader
182 decides to execute will be C<warn>-ed before execution.
186 Set the name of the schema to load (schema in the sense that your database
187 vendor means it). Does not currently support loading more than one schema
192 Only load tables matching regex. Best specified as a qr// regex.
196 Exclude tables matching regex. Best specified as a qr// regex.
200 Overrides the default table name to moniker translation. Can be either
201 a hashref of table keys and moniker values, or a coderef for a translator
202 function taking a single scalar table name argument and returning
203 a scalar moniker. If the hash entry does not exist, or the function
204 returns a false value, the code falls back to default behavior
207 The default behavior is to singularize the table name, and: C<join '', map
208 ucfirst, split /[\W_]+/, lc $table>, which is to say: lowercase everything,
209 split up the table name into chunks anywhere a non-alpha-numeric character
210 occurs, change the case of first letter of each chunk to upper case, and put
211 the chunks back together. Examples:
213 Table Name | Moniker Name
214 ---------------------------
216 luser_group | LuserGroup
217 luser-opts | LuserOpt
219 =head2 inflect_plural
221 Just like L</moniker_map> above (can be hash/code-ref, falls back to default
222 if hash key does not exist or coderef returns false), but acts as a map
223 for pluralizing relationship names. The default behavior is to utilize
224 L<Lingua::EN::Inflect::Number/to_PL>.
226 =head2 inflect_singular
228 As L</inflect_plural> above, but for singularizing relationship names.
229 Default behavior is to utilize L<Lingua::EN::Inflect::Number/to_S>.
231 =head2 schema_base_class
233 Base class for your schema classes. Defaults to 'DBIx::Class::Schema'.
235 =head2 result_base_class
237 Base class for your table classes (aka result classes). Defaults to
240 =head2 additional_base_classes
242 List of additional base classes all of your table classes will use.
244 =head2 left_base_classes
246 List of additional base classes all of your table classes will use
247 that need to be leftmost.
249 =head2 additional_classes
251 List of additional classes which all of your table classes will use.
255 List of additional components to be loaded into all of your table
256 classes. A good example would be C<ResultSetManager>.
258 =head2 resultset_components
260 List of additional ResultSet components to be loaded into your table
261 classes. A good example would be C<AlwaysRS>. Component
262 C<ResultSetManager> will be automatically added to the above
263 C<components> list if this option is set.
265 =head2 use_namespaces
267 This is now the default, to go back to L<DBIx::Class::Schema/load_classes> pass
270 Generate result class names suitable for
271 L<DBIx::Class::Schema/load_namespaces> and call that instead of
272 L<DBIx::Class::Schema/load_classes>. When using this option you can also
273 specify any of the options for C<load_namespaces> (i.e. C<result_namespace>,
274 C<resultset_namespace>, C<default_resultset_class>), and they will be added
275 to the call (and the generated result class names adjusted appropriately).
277 =head2 dump_directory
279 This option is designed to be a tool to help you transition from this
280 loader to a manually-defined schema when you decide it's time to do so.
282 The value of this option is a perl libdir pathname. Within
283 that directory this module will create a baseline manual
284 L<DBIx::Class::Schema> module set, based on what it creates at runtime
287 The created schema class will have the same classname as the one on
288 which you are setting this option (and the ResultSource classes will be
289 based on this name as well).
291 Normally you wouldn't hard-code this setting in your schema class, as it
292 is meant for one-time manual usage.
294 See L<DBIx::Class::Schema::Loader/dump_to_dir> for examples of the
295 recommended way to access this functionality.
297 =head2 dump_overwrite
299 Deprecated. See L</really_erase_my_files> below, which does *not* mean
300 the same thing as the old C<dump_overwrite> setting from previous releases.
302 =head2 really_erase_my_files
304 Default false. If true, Loader will unconditionally delete any existing
305 files before creating the new ones from scratch when dumping a schema to disk.
307 The default behavior is instead to only replace the top portion of the
308 file, up to and including the final stanza which contains
309 C<# DO NOT MODIFY THIS OR ANYTHING ABOVE!>
310 leaving any customizations you placed after that as they were.
312 When C<really_erase_my_files> is not set, if the output file already exists,
313 but the aforementioned final stanza is not found, or the checksum
314 contained there does not match the generated contents, Loader will
315 croak and not touch the file.
317 You should really be using version control on your schema classes (and all
318 of the rest of your code for that matter). Don't blame me if a bug in this
319 code wipes something out when it shouldn't have, you've been warned.
321 =head2 overwrite_modifications
323 Default false. If false, when updating existing files, Loader will
324 refuse to modify any Loader-generated code that has been modified
325 since its last run (as determined by the checksum Loader put in its
328 If true, Loader will discard any manual modifications that have been
329 made to Loader-generated code.
331 Again, you should be using version control on your schema classes. Be
332 careful with this option.
336 None of these methods are intended for direct invocation by regular
337 users of L<DBIx::Class::Schema::Loader>. Anything you can find here
338 can also be found via standard L<DBIx::Class::Schema> methods somehow.
342 use constant CURRENT_V => 'v5';
344 # ensure that a peice of object data is a valid arrayref, creating
345 # an empty one or encapsulating whatever's there.
346 sub _ensure_arrayref {
351 $self->{$_} = [ $self->{$_} ]
352 unless ref $self->{$_} eq 'ARRAY';
358 Constructor for L<DBIx::Class::Schema::Loader::Base>, used internally
359 by L<DBIx::Class::Schema::Loader>.
364 my ( $class, %args ) = @_;
366 my $self = { %args };
368 bless $self => $class;
370 $self->_ensure_arrayref(qw/additional_classes
371 additional_base_classes
377 push(@{$self->{components}}, 'ResultSetManager')
378 if @{$self->{resultset_components}};
380 $self->{monikers} = {};
381 $self->{classes} = {};
382 $self->{_upgrading_classes} = {};
384 $self->{schema_class} ||= ( ref $self->{schema} || $self->{schema} );
385 $self->{schema} ||= $self->{schema_class};
387 croak "dump_overwrite is deprecated. Please read the"
388 . " DBIx::Class::Schema::Loader::Base documentation"
389 if $self->{dump_overwrite};
391 $self->{dynamic} = ! $self->{dump_directory};
392 $self->{temp_directory} ||= File::Temp::tempdir( 'dbicXXXX',
397 $self->{dump_directory} ||= $self->{temp_directory};
399 $self->version_to_dump($DBIx::Class::Schema::Loader::VERSION);
400 $self->schema_version_to_dump($DBIx::Class::Schema::Loader::VERSION);
402 if ((not ref $self->naming) && defined $self->naming) {
403 my $naming_ver = $self->naming;
405 relationships => $naming_ver,
406 monikers => $naming_ver,
411 for (values %{ $self->naming }) {
412 $_ = CURRENT_V if $_ eq 'current';
415 $self->{naming} ||= {};
417 $self->_check_back_compat;
419 $self->use_namespaces(1) unless defined $self->use_namespaces;
424 sub _check_back_compat {
427 # dynamic schemas will always be in 0.04006 mode, unless overridden
428 if ($self->dynamic) {
429 # just in case, though no one is likely to dump a dynamic schema
430 $self->schema_version_to_dump('0.04006');
432 if (not %{ $self->naming }) {
433 warn <<EOF unless $ENV{SCHEMA_LOADER_BACKCOMPAT};
435 Dynamic schema detected, will run in 0.04006 mode.
437 Set the 'naming' attribute or the SCHEMA_LOADER_BACKCOMPAT environment variable
438 to disable this warning.
440 See perldoc DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 for more
445 $self->_upgrading_from('v4');
448 $self->naming->{relationships} ||= 'v4';
449 $self->naming->{monikers} ||= 'v4';
451 $self->use_namespaces(0) unless defined $self->use_namespaces;
456 # otherwise check if we need backcompat mode for a static schema
457 my $filename = $self->_get_dump_filename($self->schema_class);
458 return unless -e $filename;
460 open(my $fh, '<', $filename)
461 or croak "Cannot open '$filename' for reading: $!";
463 my $load_classes = 0;
466 if (/^__PACKAGE__->load_classes;/) {
468 } elsif (/^# Created by DBIx::Class::Schema::Loader v((\d+)\.(\d+))/) {
471 # XXX when we go past .0 this will need fixing
472 my ($v) = $real_ver =~ /([1-9])/;
475 $self->_upgrading_from_load_classes($load_classes)
476 unless defined $self->use_namespaces;
478 last if $v eq CURRENT_V || $real_ver =~ /^0\.\d\d999/;
480 if (not %{ $self->naming }) {
481 warn <<"EOF" unless $ENV{SCHEMA_LOADER_BACKCOMPAT};
483 Version $real_ver static schema detected, turning on backcompat mode.
485 Set the 'naming' attribute or the SCHEMA_LOADER_BACKCOMPAT environment variable
486 to disable this warning.
488 See perldoc DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 for more
493 $self->_upgrading_from($v);
497 $self->naming->{relationships} ||= $v;
498 $self->naming->{monikers} ||= $v;
500 $self->schema_version_to_dump($real_ver);
502 $self->use_namespaces(0) unless defined $self->use_namespaces;
510 sub _find_file_in_inc {
511 my ($self, $file) = @_;
513 foreach my $prefix (@INC) {
514 my $fullpath = File::Spec->catfile($prefix, $file);
515 return $fullpath if -f $fullpath
516 and Cwd::abs_path($fullpath) ne
517 (Cwd::abs_path(File::Spec->catfile($self->dump_directory, $file)) || '');
524 my ($self, $class) = @_;
526 my $class_path = $class;
527 $class_path =~ s{::}{/}g;
528 $class_path .= '.pm';
533 sub _find_class_in_inc {
534 my ($self, $class) = @_;
536 return $self->_find_file_in_inc($self->_class_path($class));
539 sub _rewrite_old_classnames {
540 my ($self, $code) = @_;
542 return $code unless $self->_upgrading_from;
544 my %old_classes = reverse %{ $self->_upgrading_classes };
546 my $re = join '|', keys %old_classes;
549 $code =~ s/$re/$old_classes{$1} || $1/eg;
555 my ($self, $class) = @_;
557 return if $self->{skip_load_external};
559 # so that we don't load our own classes, under any circumstances
560 local *INC = [ grep $_ ne $self->dump_directory, @INC ];
562 my $real_inc_path = $self->_find_class_in_inc($class);
564 my $old_class = $self->_upgrading_classes->{$class}
565 if $self->_upgrading_from;
567 my $old_real_inc_path = $self->_find_class_in_inc($old_class)
568 if $old_class && $old_class ne $class;
570 return unless $real_inc_path || $old_real_inc_path;
572 if ($real_inc_path) {
573 # If we make it to here, we loaded an external definition
574 warn qq/# Loaded external class definition for '$class'\n/
577 open(my $fh, '<', $real_inc_path)
578 or croak "Failed to open '$real_inc_path' for reading: $!";
579 my $code = do { local $/; <$fh> };
581 or croak "Failed to close $real_inc_path: $!";
582 $code = $self->_rewrite_old_classnames($code);
584 if ($self->dynamic) { # load the class too
585 # kill redefined warnings
586 my $warn_handler = $SIG{__WARN__} || sub { warn @_ };
587 local $SIG{__WARN__} = sub {
589 unless $_[0] =~ /^Subroutine \S+ redefined/;
595 $self->_ext_stmt($class,
596 qq|# These lines were loaded from '$real_inc_path' found in \@INC.\n|
597 .qq|# They are now part of the custom portion of this file\n|
598 .qq|# for you to hand-edit. If you do not either delete\n|
599 .qq|# this section or remove that file from \@INC, this section\n|
600 .qq|# will be repeated redundantly when you re-create this\n|
601 .qq|# file again via Loader! See skip_load_external to disable\n|
602 .qq|# this feature.\n|
605 $self->_ext_stmt($class, $code);
606 $self->_ext_stmt($class,
607 qq|# End of lines loaded from '$real_inc_path' |
611 if ($old_real_inc_path) {
612 open(my $fh, '<', $old_real_inc_path)
613 or croak "Failed to open '$old_real_inc_path' for reading: $!";
614 $self->_ext_stmt($class, <<"EOF");
616 # These lines were loaded from '$old_real_inc_path',
617 # based on the Result class name that would have been created by an 0.04006
618 # version of the Loader. For a static schema, this happens only once during
619 # upgrade. See skip_load_external to disable this feature.
623 local ($/, @ARGV) = (undef, $old_real_inc_path); <>
625 $code = $self->_rewrite_old_classnames($code);
627 if ($self->dynamic) {
630 Detected external content in '$old_real_inc_path', a class name that would have
631 been used by an 0.04006 version of the Loader.
633 * PLEASE RENAME THIS CLASS: from '$old_class' to '$class', as that is the
634 new name of the Result.
636 # kill redefined warnings
637 my $warn_handler = $SIG{__WARN__} || sub { warn @_ };
638 local $SIG{__WARN__} = sub {
640 unless $_[0] =~ /^Subroutine \S+ redefined/;
647 $self->_ext_stmt($class, $code);
648 $self->_ext_stmt($class,
649 qq|# End of lines loaded from '$old_real_inc_path' |
656 Does the actual schema-construction work.
663 $self->_load_tables($self->_tables_list);
670 Rescan the database for newly added tables. Does
671 not process drops or changes. Returns a list of
672 the newly added table monikers.
674 The schema argument should be the schema class
675 or object to be affected. It should probably
676 be derived from the original schema_class used
682 my ($self, $schema) = @_;
684 $self->{schema} = $schema;
685 $self->_relbuilder->{schema} = $schema;
688 my @current = $self->_tables_list;
689 foreach my $table ($self->_tables_list) {
690 if(!exists $self->{_tables}->{$table}) {
691 push(@created, $table);
695 my $loaded = $self->_load_tables(@created);
697 return map { $self->monikers->{$_} } @$loaded;
701 no warnings 'uninitialized';
704 return if $self->{skip_relationships};
706 if ($self->naming->{relationships} eq 'v4') {
707 require DBIx::Class::Schema::Loader::RelBuilder::Compat::v0_040;
708 return $self->{relbuilder} ||=
709 DBIx::Class::Schema::Loader::RelBuilder::Compat::v0_040->new(
710 $self->schema, $self->inflect_plural, $self->inflect_singular
714 $self->{relbuilder} ||= DBIx::Class::Schema::Loader::RelBuilder->new (
716 $self->inflect_plural,
717 $self->inflect_singular,
718 $self->relationship_attrs,
723 my ($self, @tables) = @_;
725 # First, use _tables_list with constraint and exclude
726 # to get a list of tables to operate on
728 my $constraint = $self->constraint;
729 my $exclude = $self->exclude;
731 @tables = grep { /$constraint/ } @tables if $constraint;
732 @tables = grep { ! /$exclude/ } @tables if $exclude;
734 # Save the new tables to the tables list
736 $self->{_tables}->{$_} = 1;
739 $self->_make_src_class($_) for @tables;
740 $self->_setup_src_meta($_) for @tables;
742 if(!$self->skip_relationships) {
743 # The relationship loader needs a working schema
745 local $self->{dump_directory} = $self->{temp_directory};
746 $self->_reload_classes(\@tables);
747 $self->_load_relationships($_) for @tables;
750 # Remove that temp dir from INC so it doesn't get reloaded
751 @INC = grep $_ ne $self->dump_directory, @INC;
754 $self->_load_external($_)
755 for map { $self->classes->{$_} } @tables;
757 # Reload without unloading first to preserve any symbols from external
759 $self->_reload_classes(\@tables, 0);
761 # Drop temporary cache
762 delete $self->{_cache};
767 sub _reload_classes {
768 my ($self, $tables, $unload) = @_;
770 my @tables = @$tables;
771 $unload = 1 unless defined $unload;
773 # so that we don't repeat custom sections
774 @INC = grep $_ ne $self->dump_directory, @INC;
776 $self->_dump_to_dir(map { $self->classes->{$_} } @tables);
778 unshift @INC, $self->dump_directory;
781 my %have_source = map { $_ => $self->schema->source($_) }
782 $self->schema->sources;
784 for my $table (@tables) {
785 my $moniker = $self->monikers->{$table};
786 my $class = $self->classes->{$table};
789 no warnings 'redefine';
790 local *Class::C3::reinitialize = sub {};
793 Class::Unload->unload($class) if $unload;
794 my ($source, $resultset_class);
796 ($source = $have_source{$moniker})
797 && ($resultset_class = $source->resultset_class)
798 && ($resultset_class ne 'DBIx::Class::ResultSet')
800 my $has_file = Class::Inspector->loaded_filename($resultset_class);
801 Class::Unload->unload($resultset_class) if $unload;
802 $self->_reload_class($resultset_class) if $has_file;
804 $self->_reload_class($class);
806 push @to_register, [$moniker, $class];
809 Class::C3->reinitialize;
811 $self->schema->register_class(@$_);
815 # We use this instead of ensure_class_loaded when there are package symbols we
818 my ($self, $class) = @_;
820 my $class_path = $self->_class_path($class);
821 delete $INC{ $class_path };
823 # kill redefined warnings
824 my $warn_handler = $SIG{__WARN__} || sub { warn @_ };
825 local $SIG{__WARN__} = sub {
827 unless $_[0] =~ /^Subroutine \S+ redefined/;
829 eval "require $class;";
832 sub _get_dump_filename {
833 my ($self, $class) = (@_);
836 return $self->dump_directory . q{/} . $class . q{.pm};
839 sub _ensure_dump_subdirs {
840 my ($self, $class) = (@_);
842 my @name_parts = split(/::/, $class);
843 pop @name_parts; # we don't care about the very last element,
844 # which is a filename
846 my $dir = $self->dump_directory;
849 mkdir($dir) or croak "mkdir('$dir') failed: $!";
851 last if !@name_parts;
852 $dir = File::Spec->catdir($dir, shift @name_parts);
857 my ($self, @classes) = @_;
859 my $schema_class = $self->schema_class;
860 my $schema_base_class = $self->schema_base_class || 'DBIx::Class::Schema';
862 my $target_dir = $self->dump_directory;
863 warn "Dumping manual schema for $schema_class to directory $target_dir ...\n"
864 unless $self->{dynamic} or $self->{quiet};
867 qq|package $schema_class;\n\n|
868 . qq|# Created by DBIx::Class::Schema::Loader\n|
869 . qq|# DO NOT MODIFY THE FIRST PART OF THIS FILE\n\n|
870 . qq|use strict;\nuse warnings;\n\n|
871 . qq|use base '$schema_base_class';\n\n|;
873 if ($self->use_namespaces) {
874 $schema_text .= qq|__PACKAGE__->load_namespaces|;
875 my $namespace_options;
876 for my $attr (qw(result_namespace
878 default_resultset_class)) {
880 $namespace_options .= qq| $attr => '| . $self->$attr . qq|',\n|
883 $schema_text .= qq|(\n$namespace_options)| if $namespace_options;
884 $schema_text .= qq|;\n|;
887 $schema_text .= qq|__PACKAGE__->load_classes;\n|;
891 local $self->{version_to_dump} = $self->schema_version_to_dump;
892 $self->_write_classfile($schema_class, $schema_text, 1);
895 my $result_base_class = $self->result_base_class || 'DBIx::Class::Core';
897 foreach my $src_class (@classes) {
899 qq|package $src_class;\n\n|
900 . qq|# Created by DBIx::Class::Schema::Loader\n|
901 . qq|# DO NOT MODIFY THE FIRST PART OF THIS FILE\n\n|
902 . qq|use strict;\nuse warnings;\n\n|
903 . qq|use base '$result_base_class';\n\n|;
905 $self->_write_classfile($src_class, $src_text);
908 warn "Schema dump completed.\n" unless $self->{dynamic} or $self->{quiet};
913 my ($self, $version, $ts) = @_;
914 return qq|\n\n# Created by DBIx::Class::Schema::Loader|
917 . qq|\n# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:|;
920 sub _write_classfile {
921 my ($self, $class, $text, $is_schema) = @_;
923 my $filename = $self->_get_dump_filename($class);
924 $self->_ensure_dump_subdirs($class);
926 if (-f $filename && $self->really_erase_my_files) {
927 warn "Deleting existing file '$filename' due to "
928 . "'really_erase_my_files' setting\n" unless $self->{quiet};
932 my ($custom_content, $old_md5, $old_ver, $old_ts) = $self->_get_custom_content($class, $filename);
934 if (my $old_class = $self->_upgrading_classes->{$class}) {
935 my $old_filename = $self->_get_dump_filename($old_class);
937 my ($old_custom_content) = $self->_get_custom_content(
938 $old_class, $old_filename, 0 # do not add default comment
941 $old_custom_content =~ s/\n\n# You can replace.*\n1;\n//;
943 if ($old_custom_content) {
945 "\n" . $old_custom_content . "\n" . $custom_content;
948 unlink $old_filename;
951 $custom_content = $self->_rewrite_old_classnames($custom_content);
954 for @{$self->{_dump_storage}->{$class} || []};
956 # Check and see if the dump is infact differnt
960 $compare_to = $text . $self->_sig_comment($old_ver, $old_ts);
963 if (Digest::MD5::md5_base64($compare_to) eq $old_md5) {
964 return unless $self->_upgrading_from && $is_schema;
968 $text .= $self->_sig_comment(
969 $self->version_to_dump,
970 POSIX::strftime('%Y-%m-%d %H:%M:%S', localtime)
973 open(my $fh, '>', $filename)
974 or croak "Cannot open '$filename' for writing: $!";
976 # Write the top half and its MD5 sum
977 print $fh $text . Digest::MD5::md5_base64($text) . "\n";
979 # Write out anything loaded via external partial class file in @INC
981 for @{$self->{_ext_storage}->{$class} || []};
983 # Write out any custom content the user has added
984 print $fh $custom_content;
987 or croak "Error closing '$filename': $!";
990 sub _default_custom_content {
991 return qq|\n\n# You can replace this text with custom|
992 . qq| content, and it will be preserved on regeneration|
996 sub _get_custom_content {
997 my ($self, $class, $filename, $add_default) = @_;
999 $add_default = 1 unless defined $add_default;
1001 return ($self->_default_custom_content) if ! -f $filename;
1003 open(my $fh, '<', $filename)
1004 or croak "Cannot open '$filename' for reading: $!";
1007 qr{^(# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:)([A-Za-z0-9/+]{22})\n};
1010 my ($md5, $ts, $ver);
1012 if(!$md5 && /$mark_re/) {
1016 # Pull out the previous version and timestamp
1017 ($ver, $ts) = $buffer =~ m/# Created by DBIx::Class::Schema::Loader v(.*?) @ (.*?)$/s;
1020 croak "Checksum mismatch in '$filename', the auto-generated part of the file has been modified outside of this loader. Aborting.\nIf you want to overwrite these modifications, set the 'overwrite_modifications' loader option.\n"
1021 if !$self->overwrite_modifications && Digest::MD5::md5_base64($buffer) ne $md5;
1030 croak "Cannot not overwrite '$filename' without 'really_erase_my_files',"
1031 . " it does not appear to have been generated by Loader"
1034 # Default custom content:
1035 $buffer ||= $self->_default_custom_content if $add_default;
1037 return ($buffer, $md5, $ver, $ts);
1045 warn "$target: use $_;" if $self->debug;
1046 $self->_raw_stmt($target, "use $_;");
1053 my $schema_class = $self->schema_class;
1055 my $blist = join(q{ }, @_);
1056 warn "$target: use base qw/ $blist /;" if $self->debug && @_;
1057 $self->_raw_stmt($target, "use base qw/ $blist /;") if @_;
1060 # Create class with applicable bases, setup monikers, etc
1061 sub _make_src_class {
1062 my ($self, $table) = @_;
1064 my $schema = $self->schema;
1065 my $schema_class = $self->schema_class;
1067 my $table_moniker = $self->_table2moniker($table);
1068 my @result_namespace = ($schema_class);
1069 if ($self->use_namespaces) {
1070 my $result_namespace = $self->result_namespace || 'Result';
1071 if ($result_namespace =~ /^\+(.*)/) {
1072 # Fully qualified namespace
1073 @result_namespace = ($1)
1076 # Relative namespace
1077 push @result_namespace, $result_namespace;
1080 my $table_class = join(q{::}, @result_namespace, $table_moniker);
1082 if (my $upgrading_v = $self->_upgrading_from) {
1083 local $self->naming->{monikers} = $upgrading_v;
1085 my $old_class = join(q{::}, @result_namespace,
1086 $self->_table2moniker($table));
1088 $self->_upgrading_classes->{$table_class} = $old_class
1089 unless $table_class eq $old_class;
1092 my $table_normalized = lc $table;
1093 $self->classes->{$table} = $table_class;
1094 $self->classes->{$table_normalized} = $table_class;
1095 $self->monikers->{$table} = $table_moniker;
1096 $self->monikers->{$table_normalized} = $table_moniker;
1098 $self->_use ($table_class, @{$self->additional_classes});
1099 $self->_inject($table_class, @{$self->left_base_classes});
1101 if (my @components = @{ $self->components }) {
1102 $self->_dbic_stmt($table_class, 'load_components', @components);
1105 $self->_dbic_stmt($table_class, 'load_resultset_components', @{$self->resultset_components})
1106 if @{$self->resultset_components};
1107 $self->_inject($table_class, @{$self->additional_base_classes});
1110 # Set up metadata (cols, pks, etc)
1111 sub _setup_src_meta {
1112 my ($self, $table) = @_;
1114 my $schema = $self->schema;
1115 my $schema_class = $self->schema_class;
1117 my $table_class = $self->classes->{$table};
1118 my $table_moniker = $self->monikers->{$table};
1120 my $table_name = $table;
1121 my $name_sep = $self->schema->storage->sql_maker->name_sep;
1123 if ($name_sep && $table_name =~ /\Q$name_sep\E/) {
1124 $table_name = \ $self->_quote_table_name($table_name);
1127 $self->_dbic_stmt($table_class,'table',$table_name);
1129 my $cols = $self->_table_columns($table);
1131 eval { $col_info = $self->_columns_info_for($table) };
1133 $self->_dbic_stmt($table_class,'add_columns',@$cols);
1136 if ($self->_is_case_sensitive) {
1137 for my $col (keys %$col_info) {
1138 $col_info->{$col}{accessor} = lc $col
1139 if $col ne lc($col);
1142 $col_info = { map { lc($_), $col_info->{$_} } keys %$col_info };
1145 my $fks = $self->_table_fk_info($table);
1147 for my $fkdef (@$fks) {
1148 for my $col (@{ $fkdef->{local_columns} }) {
1149 $col_info->{$col}{is_foreign_key} = 1;
1155 map { $_, ($col_info->{$_}||{}) } @$cols
1159 my %uniq_tag; # used to eliminate duplicate uniqs
1161 my $pks = $self->_table_pk_info($table) || [];
1162 @$pks ? $self->_dbic_stmt($table_class,'set_primary_key',@$pks)
1163 : carp("$table has no primary key");
1164 $uniq_tag{ join("\0", @$pks) }++ if @$pks; # pk is a uniq
1166 my $uniqs = $self->_table_uniq_info($table) || [];
1168 my ($name, $cols) = @$_;
1169 next if $uniq_tag{ join("\0", @$cols) }++; # skip duplicates
1170 $self->_dbic_stmt($table_class,'add_unique_constraint', $name, $cols);
1177 Returns a sorted list of loaded tables, using the original database table
1185 return keys %{$self->_tables};
1188 # Make a moniker from a table
1189 sub _default_table2moniker {
1190 no warnings 'uninitialized';
1191 my ($self, $table) = @_;
1193 if ($self->naming->{monikers} eq 'v4') {
1194 return join '', map ucfirst, split /[\W_]+/, lc $table;
1197 return join '', map ucfirst, split /[\W_]+/,
1198 Lingua::EN::Inflect::Number::to_S(lc $table);
1201 sub _table2moniker {
1202 my ( $self, $table ) = @_;
1206 if( ref $self->moniker_map eq 'HASH' ) {
1207 $moniker = $self->moniker_map->{$table};
1209 elsif( ref $self->moniker_map eq 'CODE' ) {
1210 $moniker = $self->moniker_map->($table);
1213 $moniker ||= $self->_default_table2moniker($table);
1218 sub _load_relationships {
1219 my ($self, $table) = @_;
1221 my $tbl_fk_info = $self->_table_fk_info($table);
1222 foreach my $fkdef (@$tbl_fk_info) {
1223 $fkdef->{remote_source} =
1224 $self->monikers->{delete $fkdef->{remote_table}};
1226 my $tbl_uniq_info = $self->_table_uniq_info($table);
1228 my $local_moniker = $self->monikers->{$table};
1229 my $rel_stmts = $self->_relbuilder->generate_code($local_moniker, $tbl_fk_info, $tbl_uniq_info);
1231 foreach my $src_class (sort keys %$rel_stmts) {
1232 my $src_stmts = $rel_stmts->{$src_class};
1233 foreach my $stmt (@$src_stmts) {
1234 $self->_dbic_stmt($src_class,$stmt->{method},@{$stmt->{args}});
1239 # Overload these in driver class:
1241 # Returns an arrayref of column names
1242 sub _table_columns { croak "ABSTRACT METHOD" }
1244 # Returns arrayref of pk col names
1245 sub _table_pk_info { croak "ABSTRACT METHOD" }
1247 # Returns an arrayref of uniqs [ [ foo => [ col1, col2 ] ], [ bar => [ ... ] ] ]
1248 sub _table_uniq_info { croak "ABSTRACT METHOD" }
1250 # Returns an arrayref of foreign key constraints, each
1251 # being a hashref with 3 keys:
1252 # local_columns (arrayref), remote_columns (arrayref), remote_table
1253 sub _table_fk_info { croak "ABSTRACT METHOD" }
1255 # Returns an array of lower case table names
1256 sub _tables_list { croak "ABSTRACT METHOD" }
1258 # Execute a constructive DBIC class method, with debug/dump_to_dir hooks.
1264 # generate the pod for this statement, storing it with $self->_pod
1265 $self->_make_pod( $class, $method, @_ );
1267 my $args = dump(@_);
1268 $args = '(' . $args . ')' if @_ < 2;
1269 my $stmt = $method . $args . q{;};
1271 warn qq|$class\->$stmt\n| if $self->debug;
1272 $self->_raw_stmt($class, '__PACKAGE__->' . $stmt);
1276 # generates the accompanying pod for a DBIC class method statement,
1277 # storing it with $self->_pod
1283 if ( $method eq 'table' ) {
1285 $self->_pod( $class, "=head1 NAME" );
1286 my $table_descr = $class;
1287 if ( $self->can('_table_comment') ) {
1288 my $comment = $self->_table_comment($table);
1289 $table_descr .= " - " . $comment if $comment;
1291 $self->{_class2table}{ $class } = $table;
1292 $self->_pod( $class, $table_descr );
1293 $self->_pod_cut( $class );
1294 } elsif ( $method eq 'add_columns' ) {
1295 $self->_pod( $class, "=head1 ACCESSORS" );
1296 my $col_counter = 0;
1298 while( my ($name,$attrs) = splice @cols,0,2 ) {
1300 $self->_pod( $class, '=head2 ' . $name );
1301 $self->_pod( $class,
1303 my $s = $attrs->{$_};
1304 $s = !defined $s ? 'undef' :
1305 length($s) == 0 ? '(empty string)' :
1309 } sort keys %$attrs,
1312 if( $self->can('_column_comment')
1313 and my $comment = $self->_column_comment( $self->{_class2table}{$class}, $col_counter)
1315 $self->_pod( $class, $comment );
1318 $self->_pod_cut( $class );
1319 } elsif ( $method =~ /^(belongs_to|has_many|might_have)$/ ) {
1320 $self->_pod( $class, "=head1 RELATIONS" ) unless $self->{_relations_started} { $class } ;
1321 my ( $accessor, $rel_class ) = @_;
1322 $self->_pod( $class, "=head2 $accessor" );
1323 $self->_pod( $class, 'Type: ' . $method );
1324 $self->_pod( $class, "Related object: L<$rel_class>" );
1325 $self->_pod_cut( $class );
1326 $self->{_relations_started} { $class } = 1;
1330 # Stores a POD documentation
1332 my ($self, $class, $stmt) = @_;
1333 $self->_raw_stmt( $class, "\n" . $stmt );
1337 my ($self, $class ) = @_;
1338 $self->_raw_stmt( $class, "\n=cut\n" );
1342 # Store a raw source line for a class (for dumping purposes)
1344 my ($self, $class, $stmt) = @_;
1345 push(@{$self->{_dump_storage}->{$class}}, $stmt);
1348 # Like above, but separately for the externally loaded stuff
1350 my ($self, $class, $stmt) = @_;
1351 push(@{$self->{_ext_storage}->{$class}}, $stmt);
1354 sub _quote_table_name {
1355 my ($self, $table) = @_;
1357 my $qt = $self->schema->storage->sql_maker->quote_char;
1359 return $table unless $qt;
1362 return $qt->[0] . $table . $qt->[1];
1365 return $qt . $table . $qt;
1368 sub _is_case_sensitive { 0 }
1370 # remove the dump dir from @INC on destruction
1374 @INC = grep $_ ne $self->dump_directory, @INC;
1379 Returns a hashref of loaded table to moniker mappings. There will
1380 be two entries for each table, the original name and the "normalized"
1381 name, in the case that the two are different (such as databases
1382 that like uppercase table names, or preserve your original mixed-case
1383 definitions, or what-have-you).
1387 Returns a hashref of table to class mappings. In some cases it will
1388 contain multiple entries per table for the original and normalized table
1389 names, as above in L</monikers>.
1393 L<DBIx::Class::Schema::Loader>
1397 See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
1401 This library is free software; you can redistribute it and/or modify it under
1402 the same terms as Perl itself.