07-20-2023, 04:30 PM
How can I do a groupBy in my code by three or more fields?
My code is like below:
val nozzleSaleReport = nozzleStateList.groupBy {
{it.shift.id},{it.createUser.id},{it.nozzle.id} // Here I need to add these three fields for grouping operation
}.map { entry ->
val max: Float = (entry.value.maxBy { it.nozzleState.finalLitreMechanical }?.nozzleState!!.finalLitreMechanical ?: 0).toString().toFloat()
val min: Float = (entry.value.minBy { it.nozzleState.finalLitreMechanical }?.nozzleState!!.finalLitreMechanical ?: 0).toString().toFloat()
NozzleSaleReport(entry.value[0].createUser.name, entry.value[0].shift.name, (max - min).toInt(),entry.value[0].shift.id, entry.value[0].nozzle.id, entry.value[0].nozzle.name)
}.let {
println(it)
}
My code is like below:
val nozzleSaleReport = nozzleStateList.groupBy {
{it.shift.id},{it.createUser.id},{it.nozzle.id} // Here I need to add these three fields for grouping operation
}.map { entry ->
val max: Float = (entry.value.maxBy { it.nozzleState.finalLitreMechanical }?.nozzleState!!.finalLitreMechanical ?: 0).toString().toFloat()
val min: Float = (entry.value.minBy { it.nozzleState.finalLitreMechanical }?.nozzleState!!.finalLitreMechanical ?: 0).toString().toFloat()
NozzleSaleReport(entry.value[0].createUser.name, entry.value[0].shift.name, (max - min).toInt(),entry.value[0].shift.id, entry.value[0].nozzle.id, entry.value[0].nozzle.name)
}.let {
println(it)
}