package DBIx::Class::DeploymentHandler::VersionHandler::ExplicitVersions;
+
use Moose;
-use Method::Signatures::Simple;
+
+# ABSTRACT: Define your own list of versions to use for migrations
+
use Carp 'croak';
with 'DBIx::Class::DeploymentHandler::HandlesVersioning';
required => 1,
);
-has to_version => ( # configuration
+has to_version => (
is => 'ro',
- lazy_build => 1, # builder comes from another role...
- # which is... probably not how we want it
+ isa => 'Str',
+ lazy_build => 1,
);
sub _build_to_version { $_[0]->schema_version }
is => 'ro',
isa => 'ArrayRef',
required => 1,
- trigger => sub {
- my $to_version = $_[0]->to_version;
- my $db_version = $_[0]->database_version;
-
- croak 'to_version not in ordered_versions'
- unless grep { $to_version eq $_ } @{ $_[1] };
-
- for (@{ $_[1] }) {
- return if $_ eq $db_version;
- croak 'to_version is before database version in ordered_versions'
- if $_ eq $to_version;
- }
- },
);
+has _index_of_versions => (
+ is => 'ro',
+ isa => 'HashRef',
+ lazy_build => 1,
+);
+
+sub _build__index_of_versions {
+ my %ret;
+ my $i = 0;
+ for (@{ $_[0]->ordered_versions }) {
+ $ret{$_} = $i++;
+ }
+ \%ret;
+}
+
has _version_idx => (
is => 'rw',
isa => 'Int',
lazy_build => 1,
);
-method _inc_version_idx { $self->_version_idx($self->_version_idx + 1 ) }
+sub _build__version_idx { $_[0]->_index_of_versions->{$_[0]->database_version} }
-method _build__version_idx {
- my $start = $self->database_version;
- my $idx = 0;
- for (@{$self->ordered_versions}) {
- return $idx
- if $_ eq $self->database_version;
- $idx++;
- }
- croak 'database version not found in ordered_versions!';
-}
+sub _inc_version_idx { $_[0]->_version_idx($_[0]->_version_idx + 1 ) }
+sub _dec_version_idx { $_[0]->_version_idx($_[0]->_version_idx - 1 ) }
-sub next_version_set { # sub instead of method because of when roles get composed
+
+sub next_version_set {
my $self = shift;
- return undef
- if $self->ordered_versions->[$self->_version_idx] eq $self->to_version;
- my $next_idx = $self->_inc_version_idx;
- if ( $next_idx <= $#{ $self->ordered_versions }) {
+ if (
+ $self->_index_of_versions->{$self->to_version} <
+ $self->_version_idx
+ ) {
+ 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->_version_idx == $self->_index_of_versions->{$self->to_version}) {
+ return undef
+ } else {
+ my $next_idx = $self->_inc_version_idx;
return [
$self->ordered_versions->[$next_idx - 1],
$self->ordered_versions->[$next_idx ],
- ]
- } else {
+ ];
+ }
+}
+
+sub previous_version_set {
+ my $self = shift;
+ if (
+ $self->_index_of_versions->{$self->to_version} >
+ $self->_version_idx
+ ) {
+ 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->_version_idx == $self->_index_of_versions->{$self->to_version}) {
return undef
+ } else {
+ my $next_idx = $self->_dec_version_idx;
+ return [
+ $self->ordered_versions->[$next_idx + 1],
+ $self->ordered_versions->[$next_idx ],
+ ];
}
}
1;
+# vim: ts=2 sw=2 expandtab
+
__END__
-vim: ts=2 sw=2 expandtab
+=head1 SEE ALSO
+
+This class is an implementation of
+L<DBIx::Class::DeploymentHandler::HandlesVersioning>. Pretty much all the
+documentation is there.