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Alex Rivera
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How can I formulate the following JPA2 criteria query without using the metamodel classes: CriteriaBuilder cb = em.getCriteriaBuilder(); CriteriaQuery<Employee> cq = cb.createQuery(Employee.class); Root<Employee> emp = cq.from(Employee.class); cq.where(cb.isEmpty(emp.get(Employee_.projects))); cq.select(emp); I would like to use: cq.where(cb.isEmpty(emp.get("projects"))); But I cant figure out how to convert the Path to an Expression, which is needed by cb.isEmpty... Thanks.
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