private void PutTags(PageBE page, List <TagBE> newTags)
{
List <TagBE> existingTags = GetTagsForPage(page).ToList();
// retrieve a diff of the existing and new tags
List <TagBE> added;
List <uint> removed;
var diffSummary = CompareTagSets(existingTags, newTags, out added, out removed);
// add and delete tags as determined from the diff
added = InsertTags(page.ID, added);
_session.TagMapping_Delete(page.ID, removed);
if ((0 < added.Count) || (0 < removed.Count))
{
RecentChangeBL.AddTagsRecentChange(_dekiContext.Now, page, _user, diffSummary);
}
PageBL.Touch(page, _dekiContext.Now);
_eventSink.PageTagsUpdate(_dekiContext.Now, page, _user);
}
