public override void UpgradeToTargetVersion(IConnection connection)
{
var dao = new ImageDao(TargetVersion.GetType());
dao.CurrentConnection = connection;
dao.CreateTableIfNotExists();
++ModifiedCount;
dao.CreateIndexIfNotExists();
++ModifiedCount;
if (dao.CountAll() > 0)
{
dao.Delete(new Dictionary <string, object>());
}
dao.UpgradeTable(new VersionChangeUnit(typeof(VersionOrigin), TargetVersion.GetType()));
}
