Question

我有一个使用“ ValidationRequirements”数据类来验证字符串的类，如果无效，则返回Enum错误消息。根据传递的要求，枚举应调整字符串以使其匹配。

ValidationRequirements：

data class ValidationRequirements(
        //--------CONFIG_REQUIREMENTS--------
        val PREFIX_STRING: String,
        val REQUIRED_LENGTH: Int,
        val MAXIMUM_LENGTH: Int,
        val REQUIRE_SPECIAL_CHARACTERS: Boolean,
        val REQUIRE_DIGITS: Boolean,
        val REQUIRE_LOWER_CASE: Boolean,
        val REQUIRE_UPPER_CASE: Boolean,
        val REQUIRE_SPACE_SEPARATION: Boolean
)

枚举：

enum class StringStrengthReport(private val errorMessage: String) {
            INVALID_EMAIL_FORMAT("Invalid email format\n"),
            TO_SHORT(" requires at least 6 characters\n"),
            LOWER_CASE_REQUIRED(" requires at least one lower case character\n"),
            UPPER_CASE_REQUIRED(" requires at least one upper case character\n"),
            DIGIT_REQUIRED(" requires at least one numeric character\n"),
            SPECIAL_CHARACTER_REQUIRED(" requires at least one special character (i.e !&?#%)\n"),
            MAX_LENGTH_EXCEEDED(" max length is 32 characters\n"),
            NULL_STRING(TO_SHORT.errorMessage),
            VALID(" is valid!\n");
}

是否可以通过更改其他种类的弦的最小/最大长度的要求？

Answer 1

改为使用密封类：

sealed class StringStrengthReport(private val message: String) {
    override fun toString() = message
}
class InvalidEmailFormat(): StringStrengthReport("Invalid email format") 
class TooShort(val minLength: Int): StringStrengthReport("Requires at least $minLength characters")

结果：

println(InvalidEmailFormat()) // Invalid email format
println(TooShort(7)) // Requires at least 7 characters

Answer 2

如果我需要将变量传递给枚举，那么从我的角度来看，实际上需要的是数据类，而不是枚举。

是否可以将变量传递给枚举？

2 个答案: