/// <summary>
/// Remove obsolete versions.
/// </summary>
public Siblings Discard(Siblings s, VersionVector context)
{
Ensure.That(s, "s").IsNotNull();
Ensure.That(context, "context").IsNotNull();
// discard all siblings that are obsolete because they are included
// in the context.
IEnumerable <VersionedObject> concurrent = s.Where(sibling => !sibling.Clock.HappensBefore(context));
return(new Siblings(concurrent));
}
public Siblings Sync(Siblings s1, Siblings s2)
{
Ensure.That(s1, "s1").IsNotNull();
Ensure.That(s2, "s2").IsNotNull();
IEnumerable <VersionedObject> r1 = s1.Where(sibling1 => !s2.Any(sibling1.HappensBefore));
IEnumerable <VersionedObject> r2 = s2.Where(sibling2 => !s1.Any(sibling2.HappensBefore));
IEnumerable <VersionedObject> union = r1.Union(r2).ToList();
return(new Siblings(union));
}
