Description Florian Schoppmann 2014-01-12 15:13:06 EST

Created attachment 238894 [details]
Test case as Maven project.

Define the following three entities.

@Entity
public class Person {
    @Id long id;
    String name;
}

@Entity
@IdClass(MedicalProcedure.MedicalHistoryId.class)
@Inheritance(strategy = InheritanceType.JOINED)
public class MedicalProcedure {
    public static class MedicalHistoryId implements Serializable {
        long patient;
        long id;
    }

    @Id @ManyToOne Person patient;
    @Id long id;
}

@Entity
public class FailedMedicalProcedure extends MedicalProcedure {
    String reason;
}

EclipseLink maps FailedMedicalProcedure to a table with the following definition (PostgreSQL 9.2.1):

CREATE TABLE failedmedicalprocedure
(
  id bigint NOT NULL,
  reason character varying(255),
  CONSTRAINT failedmedicalprocedure_pkey PRIMARY KEY (id)
)

Obviously, the patient (or, rather, patient_id) column is missing.

A test case is attached as Maven project.