implicit conversion from LocalDate (LocalDateTime) to Timestamp

[Sanjarbek Amatov]

Hi to all.

I am using LocalDate in my case classes. To work correctly I am using implicit defs

class MyLocalDate(d: Date) extends DateField(d) {   

  }

  implicit def myLocalDateToLocalDate(date: MyLocalDate): LocalDate = {

    val instant = Instant.ofEpochMilli(date.value.getTime)

    LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalDate

  }

  implicit def optionMyLocalDateToLocalDate(date: Option[MyLocalDate]): Option[LocalDate] = {

    date.map{tmp =>

      val instant = Instant.ofEpochMilli(tmp.value.getTime)

      Some(LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalDate)

    }.getOrElse(None)

  }

  implicit def localDateToMyLocalDate(date: LocalDate): MyLocalDate = {

    val instant = date.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant()

    new MyLocalDate(Date.from(instant))

  }

  implicit def optionLocalDateToMyLocalDate(date: Option[LocalDate]): Option[MyLocalDate] = {

    date.map{tmp =>

      val instant = tmp.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant()

      Some(new MyLocalDate(Date.from(instant)))

    }.getOrElse(None)

  }

If class field is just LocalDate it is working, but if Option[LocalDate] it is not working. 

How to make implicit conversion of Option[LocalDate] field???

Any help would be appreciated.

[David Whittaker]

Are you using Lift Record here?  Can you give an example of where you want the conversion to be applied?

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[Sanjarbek Amatov]

No, I am using play framework.

case class Employee(

                     id: Long,

                     surname: String,

                     firstname: String,

                     lastname: String,

                     birthday: Option[MyLocalDate],

                     citizenship: String,

                     insurance_number: String,

                     tax_number: String,

                     sex: Boolean,

                     @Column("relationship_status_id") val relationshipStatus: Int,

                     @Column("nationality_id") val nationalityId: Int,

                     override var created_at: TimeStamp,

                     override var updated_at: TimeStamp

                     ) extends Entity[Long] {

  override def save = inTransaction {

    super.save.asInstanceOf[Employee]

  }

  def update = inTransaction {

    Employee.findById(this.id).map { employee =>

      val tmp = this.copy(created_at = employee.created_at, updated_at = employee.updated_at)

      tmp.save

    }

  }

}

birthday of Employee class is Option[MyLocalDate].


вторник, 16 декабря 2014 г., 19:36:17 UTC+6 пользователь David Whittaker написал:

[Sanjarbek Amatov]

I have a run time error in code

val tmp = Employee(0,1, 1, .........,None (here is field Option(MyLocalDate),....).save

вторник, 16 декабря 2014 г., 19:36:17 UTC+6 пользователь David Whittaker написал:

Are you using Lift Record here?  Can you give an example of where you want the conversion to be applied?

[David Whittaker]

I'm still not following what the problem is.  Please post the full call that is generating the error, and what the error consists of.

[Sanjarbek Amatov]

For now I return to using java.util.Date class. But question was how to implicitly convert custom type to squeryl type with Option.

четверг, 18 декабря 2014 г., 0:59:55 UTC+6 пользователь David Whittaker написал:

[David Whittaker]

I understand that much.  If you can't post the code you are using and the error that your'e receiving, as I requested, I don't think I can help you.

[Sanjarbek Amatov]

At the moment I can't reproduce it. I will post when it will possible. Thank you.