kevinmeredith/file.md

Created July 9, 2016 17:32

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DB Constraints to support smart constructor?

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file.md

Smart Constructor

class Person private(name: String, age: Int)

object Person {
  def apply(name: String, age: Int): Option[Person] = 
    if (name.nonEmpty && age >= 0 && age < 115) Some( new Person(name, age) ) else None
}

`PERSON` table

ID | NAME | AGE
---------------
1    foo    -42

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