java - @OneToMany mapping and creating JOIN table with same type entities fails with JPA -


i have employee class. worker class extends employee, , leader class extends worker.

every leader has list public list workersresponsiblefor = new arraylist<>();. want create join table, illustrate if leader responsible 1 or many workers.

@entity @inheritance @discriminatorcolumn(name="emp_type") @table(name="employees") public abstract class employee implements printable, serializable {      @id     @generatedvalue     @column(name = "employee_id", unique = true)     private int id;      @column(name = "position")     @enumerated(enumtype.string)     private position position;      @column(name = "name")     private string name;      @column(name = "salary")     private double salary;      @transient     public list<project> projectsworkingon = new arraylist<>();      public employee() {     } }

worker:

@entity public class worker extends employee {      @id     @generatedvalue     @column(name = "worker_id", unique = true)     private int id;      public worker() {     } }

leader:

@entity public abstract class leader extends worker {      public leader() {     }      public leader(position position, string name, double salary) {         super(position, name, salary);     }      @onetomany     @jointable(name="workers_responsible_for",             joincolumns = {@joincolumn(name="responsible_for")})     public list<worker> workersresponsiblefor = new arraylist<>(); }

i'm sure, list annotations in leader class wrong, because got lot of errors every time try make work. how can annotate properly, collect responsibilities new junction table?


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