oharaandrew314

data class DynamoCat(
    @DynamoKtPartitionKey
    val ownerId: Int,
  
    @DynamoKtSortKey
    @DynamoKtSecondaryPartitionKey(indexNames = ["names"])
    val name: String,
  
    val gender: String,
    val features: List<String>

oharaandrew314

@DynamoDbBean
data class DynamoCat(
    @get:DynamoDbPartitionKey var ownerId: Int? = null,

    @get:DynamoDbSortKey
    @get:DynamoDbSecondaryPartitionKey(indexNames = ["names"])
    var name: String? = null,

    var gender: String? = null,

oharaandrew314

// create a data class model, making sure to give it a partition key
data class Cat(
    @DynamoKtPartitionKey val name: String,
    val lives: Int = 9,
)

// use the new table schema provided by this module to init the table mapper
val tableSchema = DataClassTableSchema(Cat::class)
val cats = DynamoDbEnhancedClient.create().table("cats", tableScema)

oharaandrew314

data class Cat(
    val id: String,
    val name: String,
    val ownerId: String,
    val ownerName: String,
    val colours: Set<Colour>,  // replaced grey and brown with this
    val breed: Breed?,
    val appointments: List<Instant>,
    val favouriteFood: String? = null
)

oharaandrew314

data class Cat(
    val id: String,
    val name: String,
    val ownerId: String,
    val ownerName: String,
    val brown: Boolean,
    val grey: Boolean,
    val breed: Breed?,
    val appointments: List<Instant>,
    val favouriteFood: String? = null  // new field; defaulting to null for backwards compatibility

oharaandrew314

fun main() {
    val v1 = CatsDao.v1(ClientV1("http://catdocs.com"))
    val v2 = CatsDao.v2(ClientV2("https://api.catdocs.com"))
    val backCompat = CatsDao.backCompat(v1 = v1, v2 = v2)

    val apiFeatureFlag = FeatureFlag.static(
        treatments = mapOf("123" to "v1", "b692b290-40c4-4c0f-89ac-ed0a537e1736" to "v2"),
        default = "v2"
    )

oharaandrew314

class CatUi(private val cats: CatsDao) {

    fun renderCatHtml(id: String): String {
        val cat = cats[id] ?: return "<h1>Cat $id not found</h1>"

        val isBrown = if (cat.brown) "Yes" else "No"
        val isGrey = if (cat.grey) "Yes" else "No"
        val latestAppointment = cat.appointments.maxOrNull()
        
        val optionalField = if (cat.favouriteFood != null) {

oharaandrew314

fun CatsDao.Companion.v1(client: ClientV1) = CatsDao { id ->
    client[id.toInt()]
}

oharaandrew314

class ClientV2(host: String) {

    object Lenses {
        val catId = Path.uuid().of("id")

        val cat = Body.auto<CatDtoV2>().toLens()
        val appointments = Body.auto<List<AppointmentDtoV2>>().toLens()
    }
    
    private val backend = ClientFilters.SetHostFrom(Uri.of(host))

oharaandrew314

class ClientV2(host: String) {

    object Lenses {
        val catId = Path.uuid().of("id")

        val cat = Body.auto<CatDtoV2>().toLens()
        val appointments = Body.auto<List<AppointmentDtoV2>>().toLens()
    }
    
    private val backend = ClientFilters.SetHostFrom(Uri.of(host))