the user profile

Here is what our user profile looks like in Scala:

package simbl.domain

import longevity.model.annotations.component

@component[SimblDomainModel]
case class UserProfile(
  tagline: String,
  imageUri: Uri,
  description: Markdown)

In longevity, we call the UserProfile a persistent component - a class that we persist, but not in its own table. They only get persisted along with a containing persistent object such as User.

The UserProfile has two members that are also components: Uri and Markdown:

package simbl.domain

import longevity.model.annotations.component

@component[SimblDomainModel]
case class Uri(uri: String)

@component[SimblDomainModel]
case class Markdown(markdown: String)

Uri and Markdown are simple wrapper classes for strings, which provide extra type safety, but are also places where we might add some extra functionality in the future. For instance, the Uri constructor might throw some kind of validation exception if the provided string is not a valid URI. As you can see, we can freely nest persistent components within our persistent objects.