使用休眠条件从对象获取字符串（集合）列表

Question

I have a class as following

Class Department {
    private String departmentName;
    private List<String> students;
    ....
    ....
    ....
}   

Now i want to fetch students attribute ( List<String> ) only from Department class but not entire Department object with restriction departName := Chemistry.

How to write hibernate criteria for this???

Answer 1

About you question: no, this projection is not possible because collection of elements has the same lifecycle of owner entity
Getting collections of elements with criteria is not possibile (read here ). You have to work with native SQL to return List<String> .