@AccessControl.authorizationCheck: #NOT_REQUIRED
@EndUserText.label: 'Wind turbine yield grade'
define view entity {{P}}I_WIND_GRADE
  as select from {{p}}yield as y
    inner join {{p}}turbine as t on t.turbine_id = y.turbine_id
{
  key y.turbine_id   as turbine_id,
  key y.calmonth     as calmonth,
      t.site         as site,
      y.energy_kwh   as energy_kwh,
      y.downtime_hrs as downtime_hrs,
      case
        when y.energy_kwh < 200000 then 'A'
        when y.energy_kwh >= 100000 then 'B'
        when y.energy_kwh >= 50000  then 'C'
        when y.energy_kwh >= 10000  then 'D'
        else 'E'
      end as yield_grade,
      case
        when y.downtime_hrs <= 10  then 'FULL'
        when y.downtime_hrs <= 100 then 'PARTIAL'
        else 'POOR'
      end as availability,
      case
        when y.energy_kwh >= 200000 and y.downtime_hrs <= 10  then 'TOP'
        when y.energy_kwh >= 100000 and y.downtime_hrs <= 100 then 'GOOD'
        else 'WEAK'
      end as rating,
      case
        when y.downtime_hrs > 100 then y.downtime_hrs * 25
        when y.downtime_hrs > 10  then y.downtime_hrs * 10
        else 0
      end as penalty
}