public interface Query
{
  // Execute a query that returns a result list
  List getResultList ();
  // Execute a query that returns a single result
  Object getSingleResult();
  // Execute an update query
  int executeUpdate ();

  // Methods used to fetch results step by step
  Query setMaxResults (int maxResult);
  Query setFirstResult (int startPosition);

  // Bind a parameter in a query
  Query setParameter (String name, Object value);
  Query setParameter (String name, Date value, TemporalType temporalType);
  Query setParameter (String name, Calendar value, TemporalType temporalType);
  Query setParameter (int position, Object value);
  Query setParameter (int position, Date value, TemporalType temporalType);
  Query setParameter (int position, Calendar value, TemporalType temporalType);
}