MBase.java

package org.tests.model.inheritmany;

import javax.persistence.Id;
import javax.persistence.MappedSuperclass;

@MappedSuperclass
public class MBase {

  @Id
  Long id;

  public Long getId() {
    return id;
  }

  public void setId(Long id) {
    this.id = id;
  }

}