public static void ExpireOverlappingInstances(ITemporalList <T> list, T newInstance)
{
TimeInterval effectivePeriod = newInstance.EffectivePeriod;
if (null != effectivePeriod)
{
DateTime effectiveDate = effectivePeriod.EffectiveDate;
//Verfiy that the effective date of the new instance is more than that of all instances in the list
foreach (T i in list)
{
if (null != i.EffectivePeriod && i.EffectivePeriod.EffectiveDate > effectiveDate)
{
throw new iSabayaException("The effective date of the added instance is less than some existing effective dates");
}
}
//Expire the current one
foreach (T i in list)
{
if (null != i.EffectivePeriod && i.EffectivePeriod.IsEffectiveOn(effectiveDate))
{
i.EffectivePeriod.ExpiryDate = effectiveDate;
}
}
}
}
public static T GetInstance(ITemporalList <T> list, DateTime when)
{
foreach (T i in list)
{
if (i.EffectivePeriod.IsEffectiveOn(when))
{
return(i);
}
}
return(default(T));
}
