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36 package gr.grnet.aquarium.computation
40 import scala.collection.immutable
41 import gr.grnet.aquarium.logic.accounting.dsl.Timeslot
42 import gr.grnet.aquarium.policy.UserAgreementModel
43 import gr.grnet.aquarium.charging.state.WorkingAgreementHistory
46 * The whole history of of a user's agreements.
48 * @author Christos KK Loverdos <loverdos@gmail.com>
51 case class AgreementHistory(agreements: List[UserAgreementModel]) {
52 def toWorkingAgreementHistory = {
53 (new WorkingAgreementHistory) ++ agreements
56 def agreementByTimeslot: immutable.SortedMap[Timeslot, UserAgreementModel] = {
57 immutable.TreeMap(agreements.map(ag ⇒ (ag.timeslot, ag)): _*)
61 * Get the user agreement at the specified timestamp
63 def findForTime(at: Long): Option[UserAgreementModel] = {
64 // FIXME: Refactor and do not make this static call to Policy
69 * Returns the first, chronologically, agreement.
71 def firstAgreement: Option[UserAgreementModel] = {
72 agreementByTimeslot.valuesIterator.toList.lastOption
76 * Returns the last, chronologically, agreement.
78 def lastAgreement: Option[UserAgreementModel] = {
79 agreementByTimeslot.valuesIterator.toList.headOption
83 object AgreementHistory {
84 final val Empty = AgreementHistory(Nil)
86 def initial(userAgreement: UserAgreementModel): AgreementHistory ={
87 AgreementHistory(userAgreement :: Nil)