public void AddArticle(String articleId, Category c, HashSet<Tag> tags)
{
Article a = _db.Articles.Find(articleId);
if (a != null)
a.Popularity++;
else
{
if (_db.Categories.Find(c.Name) == null)
_db.Categories.Add(c);
foreach (Tag t in tags)
{
t.CategoryId = c.Name;
if (_db.Tags.Find(t.Name) == null)
_db.Tags.Add(t);
}
_db.Articles.Add(new Article { Id = articleId, CategoryId = c.Name, Popularity = 0});
}
try
{
_db.SaveChanges();
}
catch (System.Data.Entity.Infrastructure.DbUpdateException dbEx)
{
Exception raise = dbEx;
throw dbEx.InnerException;
}
}
public void UpdatePreference(String userId, Category c, bool b)
{
//int num = 0;
//if (b)
// num = 1;
//else
// num = -1;
//foreach (Tag t in c.Tags)
//{
// if (_db.Users.Find(userId).Preference.TagRatings.ContainsKey(t))
// _db.Users.Find(userId).Preference.TagRatings[t] += num;
// else
// _db.Users.Find(userId).Preference.TagRatings.Add(t, num);
//}
//_db.SaveChanges();
}
public List<Article> GetPopularByCategory(Category c, int num)
{
return new List<Article>(_db.Articles.Where(x => x.Category.Name == c.Name).OrderByDescending(x => x.Popularity).Take(num));
}
