NamedFunctions.java

  
  private Device deviceFromEntity(DeviceEntity entity) {
    Device result = new Device();
    result.setId(entity.getId());
    result.setName(entity.getName());
    return result;
  }
  
  @Override
  public Response listDevices(
      Long userId,
      Integer firstResult,
      Integer maxResults) throws Exception {
    // TODO error handling
    List<DeviceEntity> entities = deviceDAO.listAll(firstResult, maxResults);
    List<Device> devices = entities.stream()
                                   .map(this::deviceFromEntity)
                                   .collect(Collectors.toList());
    return Response.ok(devices).build();
  }