class Link{
int id;
Point pointA;
Point pointZ;
...
}
class Point{
int id;
Circuit circuit;
...
}
class Circuit{
int id;
...
}

select * from Link where pointA.id in (select id from Point where circuit.id=1) or pointZ.id in (select id from Point where circuit.id=1)

criteria.createCriteria("pointA","a").add(Restrictions.eq("a.id",1));

DetachedCriteria pointAids= DetachedCriteria.forClass(Point.class).setProjection( Property.forName("id").add(...)
DetachedCriteria pointZids= DetachedCriteria.forClass(Point.class).setProjection( Property.forName("id").add(...)

List links = sess.createCriteria(Link.class)
    .add( Restrictions.or(
        Restrictions.in( "pointA.id", pointAids ),
        Restrictions.isNull("pointZ.id", pointAids )
    ) )
    .list();

session = HibernateSessionFactory.getSession();
DetachedCriteria pointAids = DetachedCriteria.forClass(Point.class)
         .setProjection(Property.forName("id")).add(Restrictions.eq("circuit.id", 10055));
DetachedCriteria pointZids = DetachedCriteria.forClass(Point.class)
         .setProjection(Property.forName("id")).add(Restrictions.eq("circuit.id", 10055));
List<Link> list = session.createCriteria(Link.class)
       .add( Restrictions.or(
      Restrictions.in("pointA.id", pointAids.getExecutableCriteria(session).list() ),
      Restrictions.in("PointZ.id", pointZids.getExecutableCriteria(session).list() )
      ))
      .list();

Hibernate:
    select
        this_.ResPointID as y0_
    from
        CircuitResPoint this_
    where
        this_.CircuitID=?
Hibernate:
    select
        this_.ResPointID as y0_
    from
        CircuitResPoint this_
    where
        this_.CircuitID=?
Hibernate:
    select
        this_.ResLinkID as ResLinkID1_0_,
        this_.ResLinkName as ResLinkN2_1_0_,
        this_.ResLinkAlias as ResLinkA3_1_0_,
        this_.ResLinkDescr as ResLinkD4_1_0_,
        this_.ResLinkType as ResLinkT5_1_0_,
        this_.ResPointID_A as ResPointID6_1_0_,
        this_.ResPointID_Z as ResPointID7_1_0_
    from
        CircuitResLink this_
    where
        (
            this_.ResPointID_A in (
                ?, ?, ?, ?, ?, ?, ?, ?, ?
            )
            or this_.ResPointID_Z in (
                ?, ?, ?, ?, ?, ?, ?, ?, ?
            )
        )