/// <summary>
/// The get articles by query.
/// </summary>
/// <param name="query">
/// The query.
/// </param>
/// <returns>
/// The <see cref="ICollection{T}"/>.
/// </returns>
public ICollection <Article> GetArticlesByQuery(string query)
{
var words = FilteredText.GetWords(query); // Список слов запроса
var tags = words.Select(
word => (from t in context.Tags
where string.Equals(t.Value, word, StringComparison.OrdinalIgnoreCase)
select t).FirstOrDefault()).Where(tag => tag != null)
.ToList(); // Найденные теги для введенных слов
var articleswithcoef = new List <WeightedArticle>(); // результирующая коллекция
if (!tags.Any())
{
return(null);
}
{
foreach (var tag in tags)
{
var articles = (from a in context.ArticleTags where (a.Tag.Value == tag.Value) select a.Article)
.ToList();
Parallel.ForEach(articles, article => { articleswithcoef.Add(GetWeightedArticle(article, tags)); });
foreach (var article in articles)
{
articleswithcoef.Add(GetWeightedArticle(article, tags));
}
}
}
var currentArticle = (from a in articleswithcoef.OrderByDescending(p => p.T).DistinctBy(a => a.Article.Id)
select a.Article).ToList();
return(currentArticle);
}
/// <summary>
/// The get clean all words.
/// </summary>
/// <returns>
/// The <see cref="IEnumerable{T}"/>.
/// </returns>
private IEnumerable <string> GetCleanAllWords()
{
var words = FilteredText.GetWords(Article.Text);
return(words);
}