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36 package gr.grnet.aquarium.computation
38 import gr.grnet.aquarium.util.date.MutableDateCalc
42 * @author Christos KK Loverdos <loverdos@gmail.com>
45 final class BillingMonthInfo private(val year: Int,
47 val startMillis: Long,
48 val stopMillis: Long) extends Ordered[BillingMonthInfo] {
50 def previousMonth: BillingMonthInfo = {
51 BillingMonthInfo.fromDateCalc(new MutableDateCalc(year, month).goPreviousMonth)
54 def nextMonth: BillingMonthInfo = {
55 BillingMonthInfo.fromDateCalc(new MutableDateCalc(year, month).goNextMonth)
59 def compare(that: BillingMonthInfo) = {
60 val ds = this.startMillis - that.startMillis
61 if(ds < 0) -1 else if(ds == 0) 0 else 1
65 override def equals(any: Any) = any match {
66 case that: BillingMonthInfo ⇒
67 this.year == that.year && this.month == that.month // normally everything else MUST be the same by construction
72 override def hashCode() = {
76 override def toString = "%s-%02d".format(year, month)
79 object BillingMonthInfo {
80 def fromMillis(millis: Long): BillingMonthInfo = {
81 fromDateCalc(new MutableDateCalc(millis))
84 def fromDateCalc(mdc: MutableDateCalc): BillingMonthInfo = {
85 val year = mdc.getYear
86 val month = mdc.getMonthOfYear
87 val startMillis = mdc.goStartOfThisMonth.getMillis
88 val stopMillis = mdc.goEndOfThisMonth.getMillis // no need to `copy` here, since we are discarding `mdc`
90 new BillingMonthInfo(year, month, startMillis, stopMillis)