public static VisitInfo[] GetEvents
(
[NotNull] this VisitInfo[] events,
DateTime day
)
{
if (ReferenceEquals(events, null))
{
throw new ArgumentNullException("events");
}
string dayString = IrbisDate.ConvertDateToString(day);
VisitInfo[] result = events
.AsParallel()
.Where(v => v.DateGivenString.SameString(dayString))
.ToArray();
return(result);
}
public static VisitInfo[] GetEvents
(
[NotNull] this VisitInfo[] events,
DateTime fromDay,
DateTime toDay
)
{
if (ReferenceEquals(events, null))
{
throw new ArgumentNullException("events");
}
string fromDayString = IrbisDate.ConvertDateToString(fromDay);
string toDayString = IrbisDate.ConvertDateToString(toDay);
VisitInfo[] result = events
.AsParallel()
.Where(v => (v.DateGivenString.SafeCompare(fromDayString) >= 0) &&
(v.DateGivenString.SafeCompare(toDayString) <= 0))
.ToArray();
return(result);
}
/// <summary>
/// Подсчёт количества событий.
/// </summary>
public static int CountEvents
(
[NotNull] List <ReaderInfo> readers,
DateTime fromDay,
DateTime toDay,
bool visit
)
{
if (ReferenceEquals(readers, null))
{
throw new ArgumentNullException("readers");
}
string fromDayString = IrbisDate.ConvertDateToString(fromDay);
string toDayString = IrbisDate.ConvertDateToString(toDay);
int result = readers
.SelectMany(r => r.Visits)
.Count(v => (v.DateGivenString.SafeCompare(fromDayString) >= 0) &&
(v.DateGivenString.SafeCompare(toDayString) <= 0) &&
(v.IsVisit == visit));
return(result);
}
