package core.operation; import core.user.User; import dao.DBManagement; import error.GExcptSQL; import java.util.HashMap; import java.util.Map; public class Select extends Operation { @Override public Map execute(User subject) throws GExcptSQL { Map vMap = new HashMap<>(); Map limits = new HashMap<>(); String id = (String)this.getOptions().get("student_id"); String teacher_id = (String)this.getOptions().get("teacher_id"); limits.put("id",id); vMap.put("student_id",id); vMap.put("teacher_id",teacher_id); DBManagement.update("graduation_design", vMap,limits); vMap.remove("student_id"); vMap.remove("teacher_id"); return this.getOptions(); } }