private IEnumerable <IMergeOperation <Q> > ProcessTableForTableMemberChanges <Q>(ITable sourceTable, IEnumerable <Q> originalMembers, IEnumerable <Q> refreshedMembers, Func <Q, object> sorter, OperationFactory <Q> factory, IEqualityComparer <Q> comparer) where Q : class, ITableMember <Q>
{
var results = new HashSet <IMergeOperation <Q> >();
// Check for added members
List <Q> newMembers = originalMembers.Compliment(refreshedMembers).ToList();
newMembers.ForEach(
t => results.Add(factory.AdditionOp(sourceTable, t)));
// Check for removed members
List <Q> removedMembers = refreshedMembers.Compliment(originalMembers).ToList();
removedMembers.ForEach(
t => results.Add(factory.RemovalOp(t)));
// Check for changed members
IEnumerable <Q> intersection1 = originalMembers.Intersect(refreshedMembers, comparer).OrderBy(sorter);
var x = refreshedMembers.Intersect(originalMembers, comparer).OrderBy(sorter);
var commonItems = intersection1.Zip(refreshedMembers.Intersect(originalMembers, comparer).OrderBy(sorter));
string descriptionOfChanges;
foreach (var memberPair in commonItems)
{
if (memberPair.Key.HasChanges(memberPair.Value, out descriptionOfChanges))
{
results.Add(factory.ChangeOp(memberPair.Key, memberPair.Value, descriptionOfChanges));
}
}
return(results);
}