spring boot - SpringJPA - Saving child object in one-to-many relation does not show up in the parent object after its findOne() -

when save child object , try fetch parent again, not associated child object. using springjpa , have following one-to-many relation.

class classroom {      @id      private integer classid;      onetomany(mappedby="classroom", cascade = cascadetype.all, fetch = fetchtype.eager)      private set<student> students;  } class student {      @id      private integer studentid;      @column(name="class_room_id", insertable = false, updateable = false)      private integer classroomid;      manytoone      joincolumn(name = "class_room_id", referencedcolumnname="class_room_id")      private classroom classroom; } 

even when classroomrepository.findone(classroomid) still returns 1 class. believe expected behavior returns cached instance. there way force jpa fetch associations. tried save , fetch in 2 separate transactions , still same error.

can guide me how see common use-case scenario ?

update: following code invokes these transactions

class studentproxy {    public void saveandloadstudent() {       studentservice.savestudent();       studentservice.loadclassroom();   } }  class studentservice {     @transactional     public void savestudent() {          studentrespository.save(student);     }      @transactional     public void loadclassroom() {           classroom classroom = classroomrepository.findone(classroomid);           // classroom has no students in it.        }