Hibernate criteria query on different properties of different objects

Question

Suppose I have classes like:

class A {
 B getB();
 C getC();
}

class B {
 String getFoo();
}

class C {
 int getBar();
}

and I want to filter

Answer 1

Use aliases instead of nested criteria:

Criteria criteria = session.createCriteria(A.class)
 .createAlias("b", "b_alias")
 .createAlias("c", "c_alias")
 .add(Restrictions.disjunction()
  .add(Restrictions.eq("b_alias.foo", "Something"))
  .add(Restrictions.eq("c_alias.bar", "0"))
 );