将Hql语句改为DC表达

Question

from Task where(publicLevel=2 and  department=?)or(publicLevel=3 and  department in (from Department where company=?)) 将上面这句改为DetachedCriteria detachedCriteria = DetachedCriteria.forClass(Task.class)后面条件怎么设置;

Answer 1

detachedCriteria.add(Expression.eq("publicLevel",2));
后面同这差不多

Answer 2

http://developer.51cto.com/art/200906/131743.htm

Answer 3

(publicLevel=2 and department=?) 我需要时这两个条件当做一个条件，像二楼那样是所有的条件都并列了