X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FDBIx-Class-DeploymentHandler.git;a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FDeploymentHandler%2FVersionHandler%2FDatabaseToSchemaVersions.pm;h=28b3b860e7f9051dc0513bc06d146458dcd3b6a7;hp=7be88f4cc68179a97794395dd2961295e6a6960d;hb=97aa9a748e07c9e5875d56bd7d6554e481911c5d;hpb=b539a2166a39a25bb3d1d91b47909500b55b3ee6

diff --git a/lib/DBIx/Class/DeploymentHandler/VersionHandler/DatabaseToSchemaVersions.pm b/lib/DBIx/Class/DeploymentHandler/VersionHandler/DatabaseToSchemaVersions.pm
index 7be88f4..28b3b86 100644
--- a/lib/DBIx/Class/DeploymentHandler/VersionHandler/DatabaseToSchemaVersions.pm
+++ b/lib/DBIx/Class/DeploymentHandler/VersionHandler/DatabaseToSchemaVersions.pm
@@ -1,6 +1,8 @@
 package DBIx::Class::DeploymentHandler::VersionHandler::DatabaseToSchemaVersions;
+
 use Moose;
-use Method::Signatures::Simple;
+
+# ABSTRACT: Go straight from Database to Schema version
 
 with 'DBIx::Class::DeploymentHandler::HandlesVersioning';
 
@@ -18,8 +20,8 @@ has database_version => (
 
 has to_version => ( # configuration
   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 { $_[0]->schema_version }
@@ -41,11 +43,28 @@ sub next_version_set {
   return [$self->database_version, $self->to_version];
 }
 
+sub previous_version_set {
+  my $self = shift;
+  return undef
+    if $self->once;
+
+  $self->once(!$self->once);
+  return undef
+    if $self->database_version eq $self->to_version;
+  return [$self->database_version, $self->to_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.