public void addDescriptors(DatabaseSession session) {
    // Oracle has bug in outjoins that require outerjoin of inheritance type.
    // This should really be handled by the platform during expression normalization...
    // Id for Entomologist can be negative (millis cast to int wraps...)
    project.getDescriptor(Entomologist.class).setIdValidation(IdValidation.NONE);

    session.addDescriptors(project);

    // For using read all subclasses views.
    DatabasePlatform platform = session.getLogin().getPlatform();
    if (platform.isOracle() || platform.isSybase()) {
      ClassDescriptor computerDescriptor = session.getDescriptor(Computer.class);
      ClassDescriptor vehicleDescriptor = session.getDescriptor(Vehicle.class);
      computerDescriptor.getInheritancePolicy().setReadAllSubclassesViewName("AllComputers");
      vehicleDescriptor.getInheritancePolicy().setReadAllSubclassesViewName("AllVehicles");
    }

    // Enable outer-join on AnimalMatt hierarchy.
    session
        .getDescriptor(Animal_Matt.class)
        .getInheritancePolicy()
        .setShouldOuterJoinSubclasses(true);
  }