public static TViewModel ToViewModel <TViewModel, THeader, TVersion>(this IHeaderEntity <TVersion> header, DateTime viewDate)
where THeader : IHeaderEntity <TVersion>
where TVersion : IApprovableEntity
where TViewModel : IApprovableViewModel <THeader, TVersion>, new()
{
var version = header.GetApprovedVersion <TVersion>(viewDate);
return(version != null?version.ToViewModel <TViewModel, THeader, TVersion>(viewDate) : default(TViewModel));
}
public static void NormaliseVersionEffectiveDates <TVersion>(this IHeaderEntity <TVersion> header, DateTime?latestEffectiveToDate = null)
where TVersion : IApprovableEntity
{
var versions = header.GetApprovedVersions <TVersion>();
DateTime?previousEffectiveFrom = null;
foreach (var item in versions.OrderByDescending(v => v.EffectiveFrom))
{
if (previousEffectiveFrom != null)
{
item.EffectiveTo = ((DateTime)previousEffectiveFrom).AddSeconds(-1);
}
previousEffectiveFrom = item.EffectiveFrom;
}
if (latestEffectiveToDate != null)
{
versions.OrderByDescending(v => v.EffectiveFrom).First().EffectiveTo = (DateTime)latestEffectiveToDate;
}
}
public static IEnumerable <TVersion> GetApprovedVersions <TVersion>(this IHeaderEntity <TVersion> header)
where TVersion : IApprovableEntity
{
return(header.Versions.Where(h => h.IsActive));
}
public static TVersion GetApprovedVersion <TVersion>(this IHeaderEntity <TVersion> header, DateTime viewDate)
where TVersion : IApprovableEntity
{
return(header.GetApprovedVersions <TVersion>().SingleOrDefault(h => h.EffectiveFrom <= viewDate && h.EffectiveTo >= viewDate));
}
