Files
postgres-json/src/main/kotlin/fr/postgresjson/connexion/Paginated.kt
2020-02-24 20:41:29 +01:00

25 lines
724 B
Kotlin

package fr.postgresjson.connexion
import fr.postgresjson.entity.EntityI
import kotlin.math.ceil
data class Paginated<T : EntityI>(
val result: List<T>,
val offset: Int,
val limit: Int,
val total: Int
) {
val currentPage: Int = (offset / limit) + 1
val count: Int = result.size
val totalPages: Int = (total.toDouble() / limit.toDouble()).ceil()
init {
if (offset < 0) error("offset must be greather or equal than 0")
if (limit < 1) error("limit must be greather or equal than 1")
if (total < 0) error("total must be greather or equal than 0")
}
fun isLastPage(): Boolean = currentPage >= totalPages
private fun Double.ceil(): Int = ceil(this).toInt()
}