using System; using System.Linq; using System.Linq.Expressions; namespace HeuristicLab.Services.Optimization.Billing.DAL { public interface IGenericDao<T, ID> { T FindById(ID id); IQueryable<T> FindBy(Expression<Func<T, bool>> predicate); IQueryable<T> FindAll(); void InsertOrUpdate(T entity); void Delete(T entity); void Commit(); } }