Port to Moo

[dbsrgits/DBIx-Class-DeploymentHandler.git] / lib / DBIx / Class / DeploymentHandler / VersionHandler / Monotonic.pm

diff --git a/lib/DBIx/Class/DeploymentHandler/VersionHandler/Monotonic.pm b/lib/DBIx/Class/DeploymentHandler/VersionHandler/Monotonic.pm
index 6e7c7c1..e9fdff2 100644 (file)
--- a/lib/DBIx/Class/DeploymentHandler/VersionHandler/Monotonic.pm
+++ b/lib/DBIx/Class/DeploymentHandler/VersionHandler/Monotonic.pm
@@ -1,41 +1,41 @@
 package DBIx::Class::DeploymentHandler::VersionHandler::Monotonic;
-use Moose;
+use Moo;
+use MooX::Types::MooseLike::Base qw(Int);
+
+# ABSTRACT: Obvious version progressions
+
 use Carp 'croak';
 
 with 'DBIx::Class::DeploymentHandler::HandlesVersioning';
 
 has schema_version => (
-  isa      => 'Int',
+  isa      => Int,
   is       => 'ro',
   required => 1,
 );
 
 has database_version => (
-  isa      => 'Int',
+  isa      => Int,
   is       => 'ro',
   required => 1,
 );
 
 has to_version => (
-  isa        => 'Int',
+  isa        => Int,
   is         => 'ro',
-  lazy_build => 1,
+  lazy => 1,
+  builder => '_build_to_version',
 );
 
 sub _build_to_version { $_[0]->schema_version }
 
 has _version => (
   is         => 'rw',
-  isa        => 'Int',
-  lazy_build => 1,
+  isa        => Int,
+  lazy => 1,
+  builder => '_build__version',
 );
 
-sub BUILD {
-  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" if $_[0]->to_version < $_[0]->_version;
-}
-
 sub _inc_version { $_[0]->_version($_[0]->_version + 1 ) }
 sub _dec_version { $_[0]->_version($_[0]->_version - 1 ) }
 
@@ -43,26 +43,40 @@ sub _build__version { $_[0]->database_version }
 
 sub previous_version_set {
   my $self = shift;
-  return undef
-    if $self->to_version == $self->_version;
-
-  $self->_dec_version;
-  return [$self->_version, $self->_version + 1];
+  if ($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;
-  return undef
-    if $self->to_version == $self->_version;
-
-  $self->_inc_version;
-  return [$self->_version - 1, $self->_version];
+  if ($self->to_version < $self->_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__
 
-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.