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Models.kt
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Models.kt
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package app
import org.jetbrains.exposed.dao.*
import org.jetbrains.exposed.sql.ReferenceOption
import org.joda.time.DateTime
import org.joda.time.DateTimeZone
fun currentUtc(): DateTime = DateTime.now(DateTimeZone.UTC)
abstract class BaseIntIdTable(name: String) : IntIdTable(name) {
val createdAt = datetime("createdAt").clientDefault { currentUtc() }
val updatedAt = datetime("updatedAt").nullable()
}
abstract class BaseIntEntity(id: EntityID<Int>, table: BaseIntIdTable) : IntEntity(id) {
val createdAt by table.createdAt
var updatedAt by table.updatedAt
}
abstract class BaseIntEntityClass<E : BaseIntEntity>(table: BaseIntIdTable) : IntEntityClass<E>(table) {
init {
EntityHook.subscribe { action ->
if (action.changeType == EntityChangeType.Updated) {
try {
action.toEntity(this)?.updatedAt = currentUtc()
} catch (e: Exception) {
//nothing much to do here
}
}
}
}
}
val BaseIntEntity.idValue: Int
get() = this.id.value
object Users : BaseIntIdTable("users") {
val name = varchar("name", length = 60)
val role = reference("roleId", Roles, onDelete = ReferenceOption.NO_ACTION).nullable()
}
class User(id: EntityID<Int>) : BaseIntEntity(id, Users) {
companion object : BaseIntEntityClass<User>(Users)
var name by Users.name
var role by Role optionalReferencedOn Users.role
}
object Roles : BaseIntIdTable("roles") {
val name = varchar("name", length = 60)
}
class Role(id: EntityID<Int>) : BaseIntEntity(id, Roles) {
companion object : BaseIntEntityClass<Role>(Roles)
var name by Roles.name
}