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package DBIx::Class::DeploymentHandler::VersionHandler::Monotonic;
$DBIx::Class::DeploymentHandler::VersionHandler::Monotonic::VERSION = '0.002233';
use Moose;
use DBIx::Class::DeploymentHandler::Types;
# ABSTRACT: Obvious version progressions
use Carp 'croak';
with 'DBIx::Class::DeploymentHandler::HandlesVersioning';
has schema_version => (
isa => 'DBIx::Class::DeploymentHandler::VersionNonObj',
coerce => 1,
is => 'ro',
required => 1,
);
has initial_version => (
isa => 'Int',
is => 'ro',
required => 1,
);
has to_version => (
isa => 'DBIx::Class::DeploymentHandler::VersionNonObj',
coerce => 1,
is => 'ro',
lazy_build => 1,
);
sub _build_to_version {
my $version = $_[0]->schema_version;
ref($version) ? $version->numify : $version;
}
has _version => (
is => 'rw',
isa => 'Int',
lazy_build => 1,
);
sub _inc_version { $_[0]->_version($_[0]->_version + 1 ) }
sub _dec_version { $_[0]->_version($_[0]->_version - 1 ) }
sub _build__version { $_[0]->initial_version }
# provide backwards compatibility for initial_version/database_version
around BUILDARGS => sub {
my $orig = shift;
my $class = shift;
my $args = $class->$orig(@_);
$args->{initial_version} = $args->{database_version}
if exists $args->{database_version} && !exists $args->{initial_version};
return $args;
};
sub previous_version_set {
my $self = shift;
if ($self->to_version > $self->_version) {
croak "you are trying to downgrade and your current version is less\n".
"than the version you are trying to downgrade to. Either upgrade\n".
"or update your schema"
} elsif ( $self->to_version == $self->_version) {
return undef
} else {
$self->_dec_version;
return [$self->_version + 1, $self->_version];
}
}
sub next_version_set {
my $self = shift;
if ($self->to_version < $self->initial_version) {
croak "you are trying to upgrade and your current version is greater\n".
"than the version you are trying to upgrade to. Either downgrade\n".
"or update your schema"
} elsif ( $self->to_version == $self->_version) {
return undef
} else {
$self->_inc_version;
return [$self->_version - 1, $self->_version];
}
}
__PACKAGE__->meta->make_immutable;
1;
# vim: ts=2 sw=2 expandtab
__END__
=pod
=head1 NAME
DBIx::Class::DeploymentHandler::VersionHandler::Monotonic - Obvious version progressions
=head1 SEE ALSO
This class is an implementation of
L<DBIx::Class::DeploymentHandler::HandlesVersioning>. Pretty much all the
documentation is there.
=head1 AUTHOR
Arthur Axel "fREW" Schmidt <frioux+cpan@gmail.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2019 by Arthur Axel "fREW" Schmidt.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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