private void ChooseMergeItem(string id, KeyedCollection<string, SubscriptionItem> previousAuxList, KeyedCollection<string, FeedItem> currentAuxList, MergeResult result)
{
var previous = previousAuxList.Take(id);
var current = currentAuxList.Take(id);
if (previous.LastUpdatedTime == current.LastUpdatedTime)
{
result.AddItem(previous, ItemMergeStatus.NoChangedItem);
}
else
{
previous.Update(current);
result.AddItem(previous, ItemMergeStatus.UpdatedItem);
}
}
public MergeResult Merge(IEnumerable<SubscriptionItem> oldItems, IEnumerable<FeedItem> newItems)
{
var items = newItems.Select(x =>
{
var item = new SubscriptionItem(Subscription)
{
Id = x.Id,
PublishDate = x.PublishDate,
LastUpdatedTime = x.LastUpdatedTime,
Summary = x.Summary,
Title = x.Title,
Categories = x.Categories
};
item.Links = x.Links.Select(y => new SubscriptionItemLink(item)
{
Length = y.Length,
MediaType = y.MediaType,
RelationshipType = y.RelationshipType,
Title = y.Title,
Uri = y.Uri
}).ToList();
return item;
});
var result = new MergeResult();
foreach (var item in items)
result.AddItem(item, ItemMergeStatus.NewItem);
return result;
}
private void ChooseRemovedItem(string id, KeyedCollection<string, SubscriptionItem> previousAuxList, MergeResult result)
{
result.AddItem(previousAuxList.Take(id), ItemMergeStatus.RemovedItem);
}
private void ChooseNewItem(string id, KeyedCollection<string, FeedItem> currentAuxList, MergeResult result)
{
result.AddItem(new SubscriptionItem(currentAuxList.Take(id)), ItemMergeStatus.NewItem);
}