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);
}