use strict;
use warnings;
-use Carp::Clan qw/^DBIx::Class/;
+use base qw/Class::Accessor::Grouped/;
+use mro 'c3';
-=head1 NAME
+use Scalar::Util qw/weaken blessed/;
+use DBIx::Class::_Util 'fail_on_internal_call';
+use namespace::clean;
-DBIx::Class::AccessorGroup - Lets you build groups of accessors
-
-=head1 SYNOPSIS
-
-=head1 DESCRIPTION
-
-This class lets you build groups of accessors that will call different
-getters and setters.
-
-=head1 METHODS
-
-=head2 mk_group_accessors
-
-Creates a set of accessors in a given group.
-
-=head3 Arguments: $group, @fieldspec
-
-$group is the name of the accessor group for the generated accessors; they
-will call get_$group($field) on get and set_$group($field, $value) on set.
-
-@fieldspec is a list of field/accessor names; if a fieldspec is a scalar
-this is used as both field and accessor name, if a listref it is expected to
-be of the form [ $accessor, $field ].
-
-=head3 Return value: none
-
-=cut
-
-sub mk_group_accessors {
- my ($self, $group, @fields) = @_;
-
- $self->_mk_group_accessors('make_group_accessor', $group, @fields);
- return;
-}
-
-
-{
- no strict 'refs';
- no warnings 'redefine';
-
- sub _mk_group_accessors {
- my($self, $maker, $group, @fields) = @_;
- my $class = ref $self || $self;
-
- # So we don't have to do lots of lookups inside the loop.
- $maker = $self->can($maker) unless ref $maker;
-
- foreach my $field (@fields) {
- if( $field eq 'DESTROY' ) {
- carp("Having a data accessor named DESTROY in ".
- "'$class' is unwise.");
- }
-
- my $name = $field;
-
- ($name, $field) = @$field if ref $field;
-
- my $accessor = $self->$maker($group, $field);
- my $alias = "_${name}_accessor";
-
- #warn "$class $group $field $alias";
-
- *{$class."\:\:$name"} = $accessor;
- #unless defined &{$class."\:\:$field"}
-
- *{$class."\:\:$alias"} = $accessor;
- #unless defined &{$class."\:\:$alias"}
- }
- }
+sub mk_classdata {
+ DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS and fail_on_internal_call;
+ shift->mk_classaccessor(@_);
}
-=head2 mk_group_ro_accessors
-
-Creates a set of read only accessors in a given group. Identical to
-<L:/mk_group_accessors> but accessors will throw an error if passed a value
-rather than setting the value.
-
-=head3 Arguments: $group, @fieldspec
-
-=head3 Return value: none
-
-=cut
-
-sub mk_group_ro_accessors {
- my($self, $group, @fields) = @_;
-
- $self->_mk_group_accessors('make_group_ro_accessor', $group, @fields);
+sub mk_classaccessor {
+ my $self = shift;
+ $self->mk_group_accessors('inherited', $_[0]);
+ (@_ > 1)
+ ? $self->set_inherited(@_)
+ : ( DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS and fail_on_internal_call )
+ ;
}
-=head2 mk_group_wo_accessors
-
-Creates a set of write only accessors in a given group. Identical to
-<L:/mk_group_accessors> but accessors will throw an error if not passed a
-value rather than getting the value.
-
-=head3 Arguments: $group, @fieldspec
-
-=head3 Return value: none
-
-=cut
+my $successfully_loaded_components;
-sub mk_group_wo_accessors {
- my($self, $group, @fields) = @_;
-
- $self->_mk_group_accessors('make_group_wo_accessor', $group, @fields);
-}
-
-=head2 make_group_accessor
-
-Returns a single accessor in a given group; called by mk_group_accessors
-for each entry in @fieldspec.
-
-=head3 Arguments: $group, $field
-
-=head3 Return value: $sub (\CODE)
-
-=cut
-
-sub make_group_accessor {
- my ($class, $group, $field) = @_;
-
- my $set = "set_$group";
- my $get = "get_$group";
-
- # Build a closure around $field.
- return sub {
- my $self = shift;
-
- if(@_) {
- return $self->$set($field, @_);
- }
- else {
- return $self->$get($field);
- }
- };
-}
-
-=head2 make_group_ro_accessor
-
-Returns a single read-only accessor in a given group; called by
-mk_group_ro_accessors for each entry in @fieldspec.
-
-=head3 Arguments: $group, $field
-
-=head3 Return value: $sub (\CODE)
-
-=cut
-
-sub make_group_ro_accessor {
- my($class, $group, $field) = @_;
-
- my $get = "get_$group";
-
- return sub {
- my $self = shift;
-
- if(@_) {
- my $caller = caller;
- croak("'$caller' cannot alter the value of '$field' on ".
- "objects of class '$class'");
- }
- else {
- return $self->$get($field);
- }
- };
-}
-
-=head2 make_group_wo_accessor
-
-Returns a single write-only accessor in a given group; called by
-mk_group_wo_accessors for each entry in @fieldspec.
-
-=head3 Arguments: $group, $field
-
-=head3 Return value: $sub (\CODE)
-
-=cut
-
-sub make_group_wo_accessor {
- my($class, $group, $field) = @_;
-
- my $set = "set_$group";
-
- return sub {
- my $self = shift;
-
- unless (@_) {
- my $caller = caller;
- croak("'$caller' cannot access the value of '$field' on ".
- "objects of class '$class'");
- }
- else {
- return $self->$set($field, @_);
- }
- };
-}
-
-=head2 get_simple
-
-Simple getter for hash-based objects which returns the value for the field
-name passed as an argument.
-
-=head3 Arguments: $field
-
-=head3 Return value: $value
-
-=cut
-
-sub get_simple {
- my ($self, $get) = @_;
- return $self->{$get};
-}
-
-=head2 set_simple
-
-Simple setter for hash-based objects which sets and then returns the value
-for the field name passed as an argument.
-
-=head3 Arguments: $field, $new_value
-
-=head3 Return value: $new_value
-
-=cut
+sub get_component_class {
+ my $class = $_[0]->get_inherited($_[1]);
-sub set_simple {
- my ($self, $set, $val) = @_;
- return $self->{$set} = $val;
-}
+ # It's already an object, just go for it.
+ return $class if blessed $class;
-=head2 get_component_class
+ if (defined $class and ! $successfully_loaded_components->{$class} ) {
+ $_[0]->ensure_class_loaded($class);
-Returns the class name for a component; returns an object key if called on
-an object, or attempts to return classdata referenced by _$name if called
-on a class.
+ mro::set_mro( $class, 'c3' );
-=head3 Arguments: $name
+ no strict 'refs';
+ $successfully_loaded_components->{$class}
+ = ${"${class}::__LOADED__BY__DBIC__CAG__COMPONENT_CLASS__"}
+ = do { \(my $anon = 'loaded') };
+ weaken($successfully_loaded_components->{$class});
+ }
-=head3 Return value: $component_class
+ $class;
+};
-=cut
+sub set_component_class {
+ $_[0]->set_inherited($_[1], $_[2]);
-sub get_component_class {
- my ($self, $get) = @_;
- if (ref $self) {
- return $self->{$get};
- } else {
- $get = "_$get";
- return $self->can($get) ? $self->$get : undef;
- }
+ # trigger a load for the case of $foo->component_accessor("bar")->new
+ $_[0]->get_component_class($_[1])
+ if defined wantarray;
}
-=head2 set_component_class
-
-Sets a component class name; attempts to require the class before setting
-but does not error if unable to do so. Sets an object key of the given name
-if called or an object or classdata called _$name if called on a class.
+1;
-=head3 Arguments: $name, $new_component_class
+=head1 NAME
-=head3 Return value: $new_component_class
+DBIx::Class::AccessorGroup - See Class::Accessor::Grouped
-=cut
+=head1 SYNOPSIS
-sub set_component_class {
- my ($self, $set, $val) = @_;
- eval "require $val";
- if (ref $self) {
- return $self->{$set} = $val;
- } else {
- $set = "_$set";
- return $self->can($set) ?
- $self->$set($val) :
- $self->mk_classdata($set => $val);
- }
-}
+=head1 DESCRIPTION
-1;
+This class now exists in its own right on CPAN as Class::Accessor::Grouped
-=head1 AUTHORS
+=head1 FURTHER QUESTIONS?
-Matt S. Trout <mst@shadowcatsystems.co.uk>
+Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
-=head1 LICENSE
+=head1 COPYRIGHT AND LICENSE
-You may distribute this code under the same terms as Perl itself.
+This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
+by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
+redistribute it and/or modify it under the same terms as the
+L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.
=cut
-