public TableItem(T item, Func <T, int> keyGenerator)
{
_deduplicationKey = null;
_keyGenerator = keyGenerator;
_cache = null;
Primary = item;
}
public TableItem(IEnumerable <TableItem <T> > items)
{
var first = true;
var collectionHash = 1;
var count = 0;
// Make things to be deterministic.
var orderedItems = items.Where(i => i.PrimaryDocumentId != null).OrderBy(i => i.PrimaryDocumentId.Id).ToList();
if (orderedItems.Count == 0)
{
// There must be at least 1 item in the list
FatalError.ReportWithoutCrash(new ArgumentException("Contains no items", nameof(items)));
}
else if (orderedItems.Count != items.Count())
{
// There must be document id for provided items.
FatalError.ReportWithoutCrash(new ArgumentException("Contains an item with null PrimaryDocumentId", nameof(items)));
}
foreach (var item in orderedItems)
{
count++;
if (first)
{
Primary = item.Primary;
_deduplicationKey = item.DeduplicationKey;
_keyGenerator = null;
first = false;
}
collectionHash = Hash.Combine(item.PrimaryDocumentId.Id.GetHashCode(), collectionHash);
}
if (count == 1)
{
_cache = null;
return;
}
// order of item is important. make sure we maintain it.
_cache = SharedInfoCache.GetOrAdd(collectionHash, orderedItems, c => new SharedInfoCache(c.Select(i => i.PrimaryDocumentId).ToImmutableArray()));
}
public TableItem(IEnumerable <TableItem <T> > items)
{
#if DEBUG
// If code reached here,
// There must be at least 1 item in the list
Contract.ThrowIfFalse(items.Count() > 0);
// There must be document id
Contract.ThrowIfTrue(items.Any(i => i.PrimaryDocumentId == null));
#endif
var first = true;
var collectionHash = 1;
var count = 0;
// Make things to be deterministic.
var ordereditems = items.OrderBy(i => i.PrimaryDocumentId.Id);
foreach (var item in ordereditems)
{
count++;
if (first)
{
Primary = item.Primary;
_deduplicationKey = item.DeduplicationKey;
_keyGenerator = null;
first = false;
}
collectionHash = Hash.Combine(item.PrimaryDocumentId.Id.GetHashCode(), collectionHash);
}
if (count == 1)
{
_cache = null;
return;
}
// order of item is important. make sure we maintain it.
_cache = SharedInfoCache.GetOrAdd(collectionHash, ordereditems, c => new SharedInfoCache(c.Select(i => i.PrimaryDocumentId).ToImmutableArray()));
}