Scala - 匿名类没有得到调用者类的变量

Question

我正在创建一个扩展CollaborativeFilterModel的匿名类。我想在train方法中返回matrixFactorizationModelMock，但无法解析。请注意，matrixFactorizationModelMock是在匿名类之外定义的。

class CollaborativeFilterTest extends FunSuite with EasyMockSugar {

  test("Index mapping"){

    val matrixFactorizationModelMock = mock[MatrixFactorizationModel]

    //Start of anonymous class definition:

    val model = new CollaborativeFilterModel(){

      override def train(ratings: Dataset[Rating]): MatrixFactorizationModel = {

        matrixFactorizationModelMock //Cannot resolve symbol matrixFactorizationModelMock

      }

有什么建议吗？谢谢！

Answer 1

嗯，你应该返回matrixFactorizationModelMock而不是matrixFactorizationModel ...