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36 package gr.grnet.aquarium.util
38 import scala.collection.mutable
39 import java.util.{Calendar, Date, GregorianCalendar}
40 import gr.grnet.aquarium.logic.accounting.dsl.Timeslot
43 * Various utils for manipulating dates, with special
44 * emphasis on credit DSL requirements.
46 * @author Georgios Gousios <gousiosg@gmail.com>
51 * Returns a date that is either equal to the latest of
52 * (`d - 1 year`, `limit`)
54 def oneYearBack(d: Date, limit: Date): Date = {
55 val c = new GregorianCalendar()
57 c.add(Calendar.YEAR, -1)
58 if (c.getTime.before(limit))
65 * Returns a date that is either equal to the earliest of
66 * (`d + 1 year`, `limit`)
68 def oneYearAhead(d: Date, limit: Date): Date = {
69 val c = new GregorianCalendar()
71 c.add(Calendar.YEAR, 1)
72 if (c.getTime.before(limit))
81 def findDays(from: Date, to: Date, f: Calendar => Boolean) : List[Date] = {
82 val c = new GregorianCalendar()
83 val result = new mutable.ListBuffer[Date]()
87 while (c.getTime().getTime <= to.getTime) {
89 result += new Date(c.getTime.getTime)
90 c.add(Calendar.DAY_OF_YEAR, 1)
97 * Adjust time in the provided date to the provided values
99 def adjustToTime(d: Date, h: Int, m: Int): Date = {
101 assert((0 <= h) && (h <= 23))
102 assert((0 <= m) && (m <= 59))
104 val c = new GregorianCalendar()
106 c.roll(Calendar.MINUTE, m - c.get(Calendar.MINUTE))
107 c.roll(Calendar.HOUR_OF_DAY, h - c.get(Calendar.HOUR_OF_DAY))