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 Also consider setting 'use_namespaces => 1' if/when upgrading.
442 See perldoc DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 for more
447 $self->_upgrading_from('v4');
450 $self->naming->{relationships} ||= 'v4';
451 $self->naming->{monikers} ||= 'v4';
453 if ($self->use_namespaces) {
454 $self->_upgrading_from_load_classes(1);
457 $self->use_namespaces(0);
463 # otherwise check if we need backcompat mode for a static schema
464 my $filename = $self->_get_dump_filename($self->schema_class);
465 return unless -e $filename;
467 open(my $fh, '<', $filename)
468 or croak "Cannot open '$filename' for reading: $!";
470 my $load_classes = 0;
473 if (/^__PACKAGE__->load_classes;/) {
475 } elsif (my ($real_ver) =
476 /^# Created by DBIx::Class::Schema::Loader v(\d+\.\d+)/) {
478 if ($load_classes && (not defined $self->use_namespaces)) {
479 warn <<"EOF" unless $ENV{SCHEMA_LOADER_BACKCOMPAT};
481 'load_classes;' static schema detected, turning off 'use_namespaces'.
483 Set the 'use_namespaces' attribute or the SCHEMA_LOADER_BACKCOMPAT environment
484 variable to disable this warning.
486 See perldoc DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 for more
489 $self->use_namespaces(0);
491 elsif ($load_classes && $self->use_namespaces) {
492 $self->_upgrading_from_load_classes(1);
495 # XXX when we go past .0 this will need fixing
496 my ($v) = $real_ver =~ /([1-9])/;
499 last if $v eq CURRENT_V || $real_ver =~ /^0\.\d\d999/;
501 if (not %{ $self->naming }) {
502 warn <<"EOF" unless $ENV{SCHEMA_LOADER_BACKCOMPAT};
504 Version $real_ver static schema detected, turning on backcompat mode.
506 Set the 'naming' attribute or the SCHEMA_LOADER_BACKCOMPAT environment variable
507 to disable this warning.
509 See perldoc DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 for more
514 $self->_upgrading_from($v);
518 $self->naming->{relationships} ||= $v;
519 $self->naming->{monikers} ||= $v;
521 $self->schema_version_to_dump($real_ver);
529 sub _find_file_in_inc {
530 my ($self, $file) = @_;
532 foreach my $prefix (@INC) {
533 my $fullpath = File::Spec->catfile($prefix, $file);
534 return $fullpath if -f $fullpath
535 and Cwd::abs_path($fullpath) ne
536 (Cwd::abs_path(File::Spec->catfile($self->dump_directory, $file)) || '');
543 my ($self, $class) = @_;
545 my $class_path = $class;
546 $class_path =~ s{::}{/}g;
547 $class_path .= '.pm';
552 sub _find_class_in_inc {
553 my ($self, $class) = @_;
555 return $self->_find_file_in_inc($self->_class_path($class));
558 sub _rewrite_old_classnames {
559 my ($self, $code) = @_;
561 return $code unless $self->_upgrading_from;
563 my %old_classes = reverse %{ $self->_upgrading_classes };
565 my $re = join '|', keys %old_classes;
568 $code =~ s/$re/$old_classes{$1} || $1/eg;
574 my ($self, $class) = @_;
576 return if $self->{skip_load_external};
578 # so that we don't load our own classes, under any circumstances
579 local *INC = [ grep $_ ne $self->dump_directory, @INC ];
581 my $real_inc_path = $self->_find_class_in_inc($class);
583 my $old_class = $self->_upgrading_classes->{$class}
584 if $self->_upgrading_from;
586 my $old_real_inc_path = $self->_find_class_in_inc($old_class)
587 if $old_class && $old_class ne $class;
589 return unless $real_inc_path || $old_real_inc_path;
591 if ($real_inc_path) {
592 # If we make it to here, we loaded an external definition
593 warn qq/# Loaded external class definition for '$class'\n/
596 open(my $fh, '<', $real_inc_path)
597 or croak "Failed to open '$real_inc_path' for reading: $!";
598 my $code = do { local $/; <$fh> };
600 or croak "Failed to close $real_inc_path: $!";
601 $code = $self->_rewrite_old_classnames($code);
603 if ($self->dynamic) { # load the class too
604 # kill redefined warnings
605 my $warn_handler = $SIG{__WARN__} || sub { warn @_ };
606 local $SIG{__WARN__} = sub {
608 unless $_[0] =~ /^Subroutine \S+ redefined/;
614 $self->_ext_stmt($class,
615 qq|# These lines were loaded from '$real_inc_path' found in \@INC.\n|
616 .qq|# They are now part of the custom portion of this file\n|
617 .qq|# for you to hand-edit. If you do not either delete\n|
618 .qq|# this section or remove that file from \@INC, this section\n|
619 .qq|# will be repeated redundantly when you re-create this\n|
620 .qq|# file again via Loader! See skip_load_external to disable\n|
621 .qq|# this feature.\n|
624 $self->_ext_stmt($class, $code);
625 $self->_ext_stmt($class,
626 qq|# End of lines loaded from '$real_inc_path' |
630 if ($old_real_inc_path) {
631 open(my $fh, '<', $old_real_inc_path)
632 or croak "Failed to open '$old_real_inc_path' for reading: $!";
633 $self->_ext_stmt($class, <<"EOF");
635 # These lines were loaded from '$old_real_inc_path',
636 # based on the Result class name that would have been created by an 0.04006
637 # version of the Loader. For a static schema, this happens only once during
638 # upgrade. See skip_load_external to disable this feature.
642 local ($/, @ARGV) = (undef, $old_real_inc_path); <>
644 $code = $self->_rewrite_old_classnames($code);
646 if ($self->dynamic) {
649 Detected external content in '$old_real_inc_path', a class name that would have
650 been used by an 0.04006 version of the Loader.
652 * PLEASE RENAME THIS CLASS: from '$old_class' to '$class', as that is the
653 new name of the Result.
655 # kill redefined warnings
656 my $warn_handler = $SIG{__WARN__} || sub { warn @_ };
657 local $SIG{__WARN__} = sub {
659 unless $_[0] =~ /^Subroutine \S+ redefined/;
666 $self->_ext_stmt($class, $code);
667 $self->_ext_stmt($class,
668 qq|# End of lines loaded from '$old_real_inc_path' |
675 Does the actual schema-construction work.
682 $self->_load_tables($self->_tables_list);
689 Rescan the database for newly added tables. Does
690 not process drops or changes. Returns a list of
691 the newly added table monikers.
693 The schema argument should be the schema class
694 or object to be affected. It should probably
695 be derived from the original schema_class used
701 my ($self, $schema) = @_;
703 $self->{schema} = $schema;
704 $self->_relbuilder->{schema} = $schema;
707 my @current = $self->_tables_list;
708 foreach my $table ($self->_tables_list) {
709 if(!exists $self->{_tables}->{$table}) {
710 push(@created, $table);
714 my $loaded = $self->_load_tables(@created);
716 return map { $self->monikers->{$_} } @$loaded;
720 no warnings 'uninitialized';
723 return if $self->{skip_relationships};
725 if ($self->naming->{relationships} eq 'v4') {
726 require DBIx::Class::Schema::Loader::RelBuilder::Compat::v0_040;
727 return $self->{relbuilder} ||=
728 DBIx::Class::Schema::Loader::RelBuilder::Compat::v0_040->new(
729 $self->schema, $self->inflect_plural, $self->inflect_singular
733 $self->{relbuilder} ||= DBIx::Class::Schema::Loader::RelBuilder->new (
735 $self->inflect_plural,
736 $self->inflect_singular,
737 $self->relationship_attrs,
742 my ($self, @tables) = @_;
744 # First, use _tables_list with constraint and exclude
745 # to get a list of tables to operate on
747 my $constraint = $self->constraint;
748 my $exclude = $self->exclude;
750 @tables = grep { /$constraint/ } @tables if $constraint;
751 @tables = grep { ! /$exclude/ } @tables if $exclude;
753 # Save the new tables to the tables list
755 $self->{_tables}->{$_} = 1;
758 $self->_make_src_class($_) for @tables;
759 $self->_setup_src_meta($_) for @tables;
761 if(!$self->skip_relationships) {
762 # The relationship loader needs a working schema
764 local $self->{dump_directory} = $self->{temp_directory};
765 $self->_reload_classes(\@tables);
766 $self->_load_relationships($_) for @tables;
769 # Remove that temp dir from INC so it doesn't get reloaded
770 @INC = grep $_ ne $self->dump_directory, @INC;
773 $self->_load_external($_)
774 for map { $self->classes->{$_} } @tables;
776 # Reload without unloading first to preserve any symbols from external
778 $self->_reload_classes(\@tables, 0);
780 # Drop temporary cache
781 delete $self->{_cache};
786 sub _reload_classes {
787 my ($self, $tables, $unload) = @_;
789 my @tables = @$tables;
790 $unload = 1 unless defined $unload;
792 # so that we don't repeat custom sections
793 @INC = grep $_ ne $self->dump_directory, @INC;
795 $self->_dump_to_dir(map { $self->classes->{$_} } @tables);
797 unshift @INC, $self->dump_directory;
800 my %have_source = map { $_ => $self->schema->source($_) }
801 $self->schema->sources;
803 for my $table (@tables) {
804 my $moniker = $self->monikers->{$table};
805 my $class = $self->classes->{$table};
808 no warnings 'redefine';
809 local *Class::C3::reinitialize = sub {};
812 Class::Unload->unload($class) if $unload;
813 my ($source, $resultset_class);
815 ($source = $have_source{$moniker})
816 && ($resultset_class = $source->resultset_class)
817 && ($resultset_class ne 'DBIx::Class::ResultSet')
819 my $has_file = Class::Inspector->loaded_filename($resultset_class);
820 Class::Unload->unload($resultset_class) if $unload;
821 $self->_reload_class($resultset_class) if $has_file;
823 $self->_reload_class($class);
825 push @to_register, [$moniker, $class];
828 Class::C3->reinitialize;
830 $self->schema->register_class(@$_);
834 # We use this instead of ensure_class_loaded when there are package symbols we
837 my ($self, $class) = @_;
839 my $class_path = $self->_class_path($class);
840 delete $INC{ $class_path };
842 # kill redefined warnings
843 my $warn_handler = $SIG{__WARN__} || sub { warn @_ };
844 local $SIG{__WARN__} = sub {
846 unless $_[0] =~ /^Subroutine \S+ redefined/;
848 eval "require $class;";
851 sub _get_dump_filename {
852 my ($self, $class) = (@_);
855 return $self->dump_directory . q{/} . $class . q{.pm};
858 sub _ensure_dump_subdirs {
859 my ($self, $class) = (@_);
861 my @name_parts = split(/::/, $class);
862 pop @name_parts; # we don't care about the very last element,
863 # which is a filename
865 my $dir = $self->dump_directory;
868 mkdir($dir) or croak "mkdir('$dir') failed: $!";
870 last if !@name_parts;
871 $dir = File::Spec->catdir($dir, shift @name_parts);
876 my ($self, @classes) = @_;
878 my $schema_class = $self->schema_class;
879 my $schema_base_class = $self->schema_base_class || 'DBIx::Class::Schema';
881 my $target_dir = $self->dump_directory;
882 warn "Dumping manual schema for $schema_class to directory $target_dir ...\n"
883 unless $self->{dynamic} or $self->{quiet};
886 qq|package $schema_class;\n\n|
887 . qq|# Created by DBIx::Class::Schema::Loader\n|
888 . qq|# DO NOT MODIFY THE FIRST PART OF THIS FILE\n\n|
889 . qq|use strict;\nuse warnings;\n\n|
890 . qq|use base '$schema_base_class';\n\n|;
892 if ($self->use_namespaces) {
893 $schema_text .= qq|__PACKAGE__->load_namespaces|;
894 my $namespace_options;
895 for my $attr (qw(result_namespace
897 default_resultset_class)) {
899 $namespace_options .= qq| $attr => '| . $self->$attr . qq|',\n|
902 $schema_text .= qq|(\n$namespace_options)| if $namespace_options;
903 $schema_text .= qq|;\n|;
906 $schema_text .= qq|__PACKAGE__->load_classes;\n|;
910 local $self->{version_to_dump} = $self->schema_version_to_dump;
911 $self->_write_classfile($schema_class, $schema_text, 1);
914 my $result_base_class = $self->result_base_class || 'DBIx::Class::Core';
916 foreach my $src_class (@classes) {
918 qq|package $src_class;\n\n|
919 . qq|# Created by DBIx::Class::Schema::Loader\n|
920 . qq|# DO NOT MODIFY THE FIRST PART OF THIS FILE\n\n|
921 . qq|use strict;\nuse warnings;\n\n|
922 . qq|use base '$result_base_class';\n\n|;
924 $self->_write_classfile($src_class, $src_text);
927 warn "Schema dump completed.\n" unless $self->{dynamic} or $self->{quiet};
932 my ($self, $version, $ts) = @_;
933 return qq|\n\n# Created by DBIx::Class::Schema::Loader|
936 . qq|\n# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:|;
939 sub _write_classfile {
940 my ($self, $class, $text, $is_schema) = @_;
942 my $filename = $self->_get_dump_filename($class);
943 $self->_ensure_dump_subdirs($class);
945 if (-f $filename && $self->really_erase_my_files) {
946 warn "Deleting existing file '$filename' due to "
947 . "'really_erase_my_files' setting\n" unless $self->{quiet};
951 my ($custom_content, $old_md5, $old_ver, $old_ts) = $self->_get_custom_content($class, $filename);
953 if (my $old_class = $self->_upgrading_classes->{$class}) {
954 my $old_filename = $self->_get_dump_filename($old_class);
956 my ($old_custom_content) = $self->_get_custom_content(
957 $old_class, $old_filename, 0 # do not add default comment
960 $old_custom_content =~ s/\n\n# You can replace.*\n1;\n//;
962 if ($old_custom_content) {
964 "\n" . $old_custom_content . "\n" . $custom_content;
967 unlink $old_filename;
970 $custom_content = $self->_rewrite_old_classnames($custom_content);
973 for @{$self->{_dump_storage}->{$class} || []};
975 # Check and see if the dump is infact differnt
979 $compare_to = $text . $self->_sig_comment($old_ver, $old_ts);
982 if (Digest::MD5::md5_base64($compare_to) eq $old_md5) {
983 return unless $self->_upgrading_from && $is_schema;
987 $text .= $self->_sig_comment(
988 $self->version_to_dump,
989 POSIX::strftime('%Y-%m-%d %H:%M:%S', localtime)
992 open(my $fh, '>', $filename)
993 or croak "Cannot open '$filename' for writing: $!";
995 # Write the top half and its MD5 sum
996 print $fh $text . Digest::MD5::md5_base64($text) . "\n";
998 # Write out anything loaded via external partial class file in @INC
1000 for @{$self->{_ext_storage}->{$class} || []};
1002 # Write out any custom content the user has added
1003 print $fh $custom_content;
1006 or croak "Error closing '$filename': $!";
1009 sub _default_custom_content {
1010 return qq|\n\n# You can replace this text with custom|
1011 . qq| content, and it will be preserved on regeneration|
1015 sub _get_custom_content {
1016 my ($self, $class, $filename, $add_default) = @_;
1018 $add_default = 1 unless defined $add_default;
1020 return ($self->_default_custom_content) if ! -f $filename;
1022 open(my $fh, '<', $filename)
1023 or croak "Cannot open '$filename' for reading: $!";
1026 qr{^(# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:)([A-Za-z0-9/+]{22})\n};
1029 my ($md5, $ts, $ver);
1031 if(!$md5 && /$mark_re/) {
1035 # Pull out the previous version and timestamp
1036 ($ver, $ts) = $buffer =~ m/# Created by DBIx::Class::Schema::Loader v(.*?) @ (.*?)$/s;
1039 croak "Checksum mismatch in '$filename', the auto-generated part of the file has been modified outside of this loader. Aborting.\nIf you want to overwrite these modifications, set the 'overwrite_modifications' loader option.\n"
1040 if !$self->overwrite_modifications && Digest::MD5::md5_base64($buffer) ne $md5;
1049 croak "Cannot not overwrite '$filename' without 'really_erase_my_files',"
1050 . " it does not appear to have been generated by Loader"
1053 # Default custom content:
1054 $buffer ||= $self->_default_custom_content if $add_default;
1056 return ($buffer, $md5, $ver, $ts);
1064 warn "$target: use $_;" if $self->debug;
1065 $self->_raw_stmt($target, "use $_;");
1072 my $schema_class = $self->schema_class;
1074 my $blist = join(q{ }, @_);
1075 warn "$target: use base qw/ $blist /;" if $self->debug && @_;
1076 $self->_raw_stmt($target, "use base qw/ $blist /;") if @_;
1079 # Create class with applicable bases, setup monikers, etc
1080 sub _make_src_class {
1081 my ($self, $table) = @_;
1083 my $schema = $self->schema;
1084 my $schema_class = $self->schema_class;
1086 my $table_moniker = $self->_table2moniker($table);
1087 my @result_namespace = ($schema_class);
1088 if ($self->use_namespaces) {
1089 my $result_namespace = $self->result_namespace || 'Result';
1090 if ($result_namespace =~ /^\+(.*)/) {
1091 # Fully qualified namespace
1092 @result_namespace = ($1)
1095 # Relative namespace
1096 push @result_namespace, $result_namespace;
1099 my $table_class = join(q{::}, @result_namespace, $table_moniker);
1101 if ((my $upgrading_v = $self->_upgrading_from)
1102 || $self->_upgrading_from_load_classes) {
1103 local $self->naming->{monikers} = $upgrading_v
1106 my @result_namespace = @result_namespace;
1107 @result_namespace = ($schema_class)
1108 if $self->_upgrading_from_load_classes;
1110 my $old_class = join(q{::}, @result_namespace,
1111 $self->_table2moniker($table));
1113 $self->_upgrading_classes->{$table_class} = $old_class
1114 unless $table_class eq $old_class;
1117 my $table_normalized = lc $table;
1118 $self->classes->{$table} = $table_class;
1119 $self->classes->{$table_normalized} = $table_class;
1120 $self->monikers->{$table} = $table_moniker;
1121 $self->monikers->{$table_normalized} = $table_moniker;
1123 $self->_use ($table_class, @{$self->additional_classes});
1124 $self->_inject($table_class, @{$self->left_base_classes});
1126 if (my @components = @{ $self->components }) {
1127 $self->_dbic_stmt($table_class, 'load_components', @components);
1130 $self->_dbic_stmt($table_class, 'load_resultset_components', @{$self->resultset_components})
1131 if @{$self->resultset_components};
1132 $self->_inject($table_class, @{$self->additional_base_classes});
1135 # Set up metadata (cols, pks, etc)
1136 sub _setup_src_meta {
1137 my ($self, $table) = @_;
1139 my $schema = $self->schema;
1140 my $schema_class = $self->schema_class;
1142 my $table_class = $self->classes->{$table};
1143 my $table_moniker = $self->monikers->{$table};
1145 my $table_name = $table;
1146 my $name_sep = $self->schema->storage->sql_maker->name_sep;
1148 if ($name_sep && $table_name =~ /\Q$name_sep\E/) {
1149 $table_name = \ $self->_quote_table_name($table_name);
1152 $self->_dbic_stmt($table_class,'table',$table_name);
1154 my $cols = $self->_table_columns($table);
1156 eval { $col_info = $self->_columns_info_for($table) };
1158 $self->_dbic_stmt($table_class,'add_columns',@$cols);
1161 if ($self->_is_case_sensitive) {
1162 for my $col (keys %$col_info) {
1163 $col_info->{$col}{accessor} = lc $col
1164 if $col ne lc($col);
1167 $col_info = { map { lc($_), $col_info->{$_} } keys %$col_info };
1170 my $fks = $self->_table_fk_info($table);
1172 for my $fkdef (@$fks) {
1173 for my $col (@{ $fkdef->{local_columns} }) {
1174 $col_info->{$col}{is_foreign_key} = 1;
1180 map { $_, ($col_info->{$_}||{}) } @$cols
1184 my %uniq_tag; # used to eliminate duplicate uniqs
1186 my $pks = $self->_table_pk_info($table) || [];
1187 @$pks ? $self->_dbic_stmt($table_class,'set_primary_key',@$pks)
1188 : carp("$table has no primary key");
1189 $uniq_tag{ join("\0", @$pks) }++ if @$pks; # pk is a uniq
1191 my $uniqs = $self->_table_uniq_info($table) || [];
1193 my ($name, $cols) = @$_;
1194 next if $uniq_tag{ join("\0", @$cols) }++; # skip duplicates
1195 $self->_dbic_stmt($table_class,'add_unique_constraint', $name, $cols);
1202 Returns a sorted list of loaded tables, using the original database table
1210 return keys %{$self->_tables};
1213 # Make a moniker from a table
1214 sub _default_table2moniker {
1215 no warnings 'uninitialized';
1216 my ($self, $table) = @_;
1218 if ($self->naming->{monikers} eq 'v4') {
1219 return join '', map ucfirst, split /[\W_]+/, lc $table;
1222 return join '', map ucfirst, split /[\W_]+/,
1223 Lingua::EN::Inflect::Number::to_S(lc $table);
1226 sub _table2moniker {
1227 my ( $self, $table ) = @_;
1231 if( ref $self->moniker_map eq 'HASH' ) {
1232 $moniker = $self->moniker_map->{$table};
1234 elsif( ref $self->moniker_map eq 'CODE' ) {
1235 $moniker = $self->moniker_map->($table);
1238 $moniker ||= $self->_default_table2moniker($table);
1243 sub _load_relationships {
1244 my ($self, $table) = @_;
1246 my $tbl_fk_info = $self->_table_fk_info($table);
1247 foreach my $fkdef (@$tbl_fk_info) {
1248 $fkdef->{remote_source} =
1249 $self->monikers->{delete $fkdef->{remote_table}};
1251 my $tbl_uniq_info = $self->_table_uniq_info($table);
1253 my $local_moniker = $self->monikers->{$table};
1254 my $rel_stmts = $self->_relbuilder->generate_code($local_moniker, $tbl_fk_info, $tbl_uniq_info);
1256 foreach my $src_class (sort keys %$rel_stmts) {
1257 my $src_stmts = $rel_stmts->{$src_class};
1258 foreach my $stmt (@$src_stmts) {
1259 $self->_dbic_stmt($src_class,$stmt->{method},@{$stmt->{args}});
1264 # Overload these in driver class:
1266 # Returns an arrayref of column names
1267 sub _table_columns { croak "ABSTRACT METHOD" }
1269 # Returns arrayref of pk col names
1270 sub _table_pk_info { croak "ABSTRACT METHOD" }
1272 # Returns an arrayref of uniqs [ [ foo => [ col1, col2 ] ], [ bar => [ ... ] ] ]
1273 sub _table_uniq_info { croak "ABSTRACT METHOD" }
1275 # Returns an arrayref of foreign key constraints, each
1276 # being a hashref with 3 keys:
1277 # local_columns (arrayref), remote_columns (arrayref), remote_table
1278 sub _table_fk_info { croak "ABSTRACT METHOD" }
1280 # Returns an array of lower case table names
1281 sub _tables_list { croak "ABSTRACT METHOD" }
1283 # Execute a constructive DBIC class method, with debug/dump_to_dir hooks.
1289 # generate the pod for this statement, storing it with $self->_pod
1290 $self->_make_pod( $class, $method, @_ );
1292 my $args = dump(@_);
1293 $args = '(' . $args . ')' if @_ < 2;
1294 my $stmt = $method . $args . q{;};
1296 warn qq|$class\->$stmt\n| if $self->debug;
1297 $self->_raw_stmt($class, '__PACKAGE__->' . $stmt);
1301 # generates the accompanying pod for a DBIC class method statement,
1302 # storing it with $self->_pod
1308 if ( $method eq 'table' ) {
1310 $self->_pod( $class, "=head1 NAME" );
1311 my $table_descr = $class;
1312 if ( $self->can('_table_comment') ) {
1313 my $comment = $self->_table_comment($table);
1314 $table_descr .= " - " . $comment if $comment;
1316 $self->{_class2table}{ $class } = $table;
1317 $self->_pod( $class, $table_descr );
1318 $self->_pod_cut( $class );
1319 } elsif ( $method eq 'add_columns' ) {
1320 $self->_pod( $class, "=head1 ACCESSORS" );
1321 my $col_counter = 0;
1323 while( my ($name,$attrs) = splice @cols,0,2 ) {
1325 $self->_pod( $class, '=head2 ' . $name );
1326 $self->_pod( $class,
1328 my $s = $attrs->{$_};
1329 $s = !defined $s ? 'undef' :
1330 length($s) == 0 ? '(empty string)' :
1334 } sort keys %$attrs,
1337 if( $self->can('_column_comment')
1338 and my $comment = $self->_column_comment( $self->{_class2table}{$class}, $col_counter)
1340 $self->_pod( $class, $comment );
1343 $self->_pod_cut( $class );
1344 } elsif ( $method =~ /^(belongs_to|has_many|might_have)$/ ) {
1345 $self->_pod( $class, "=head1 RELATIONS" ) unless $self->{_relations_started} { $class } ;
1346 my ( $accessor, $rel_class ) = @_;
1347 $self->_pod( $class, "=head2 $accessor" );
1348 $self->_pod( $class, 'Type: ' . $method );
1349 $self->_pod( $class, "Related object: L<$rel_class>" );
1350 $self->_pod_cut( $class );
1351 $self->{_relations_started} { $class } = 1;
1355 # Stores a POD documentation
1357 my ($self, $class, $stmt) = @_;
1358 $self->_raw_stmt( $class, "\n" . $stmt );
1362 my ($self, $class ) = @_;
1363 $self->_raw_stmt( $class, "\n=cut\n" );
1367 # Store a raw source line for a class (for dumping purposes)
1369 my ($self, $class, $stmt) = @_;
1370 push(@{$self->{_dump_storage}->{$class}}, $stmt);
1373 # Like above, but separately for the externally loaded stuff
1375 my ($self, $class, $stmt) = @_;
1376 push(@{$self->{_ext_storage}->{$class}}, $stmt);
1379 sub _quote_table_name {
1380 my ($self, $table) = @_;
1382 my $qt = $self->schema->storage->sql_maker->quote_char;
1384 return $table unless $qt;
1387 return $qt->[0] . $table . $qt->[1];
1390 return $qt . $table . $qt;
1393 sub _is_case_sensitive { 0 }
1395 # remove the dump dir from @INC on destruction
1399 @INC = grep $_ ne $self->dump_directory, @INC;
1404 Returns a hashref of loaded table to moniker mappings. There will
1405 be two entries for each table, the original name and the "normalized"
1406 name, in the case that the two are different (such as databases
1407 that like uppercase table names, or preserve your original mixed-case
1408 definitions, or what-have-you).
1412 Returns a hashref of table to class mappings. In some cases it will
1413 contain multiple entries per table for the original and normalized table
1414 names, as above in L</monikers>.
1418 L<DBIx::Class::Schema::Loader>
1422 See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
1426 This library is free software; you can redistribute it and/or modify it under
1427 the same terms as Perl itself.