scala：如何返回空对象而不是None

Question

val customerIdent = custIdentByCustomerId(id).firstOption
customerIdent.getOrElse (None)

我不想返回None，想要返回类型为CustomerIdentification的空customerIdent。

如果我这样做：

customerIdent.getOrElse (None)

编译器说：

[error] C:\Code\...\scala\models\Customer.scala:125: type mismatch;
[error] found : None.type [error] required: models.CustomerIdentification 
[error] customer.get.status, customer. get.rec_marketing_messages, customerIdent.getOrElse (None))

请帮忙

Answer 1

您是否能够构建CustomerIdentification的空版本？类似的东西：

val emptyIdent = CustomerIdentification()

然后你可以说：

val customerIdent = custIdentByCustomerId(id).firstOption
customerIdent.getOrElse(emptyIdent)