Ejemplo n.º 1
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 // inicjalizuj wartości domyślne
 public Search(Search oldSearch)
 {
     _searchTerm = oldSearch.SearchTerm;
     _includeTitle = oldSearch.IncludeTitle;
     _includeAuthor = oldSearch.IncludeAuthor;
     _includeCategory = oldSearch.IncludeCategory;
     _includeDescription = oldSearch.IncludeDescription;
     _sortOrder = oldSearch.SortOrder;
     _sortBy = oldSearch.SortBy;
     _howMuchSkip = oldSearch.HowMuchSkip;
     _howMuchTake = oldSearch.HowMuchTake;
 }
Ejemplo n.º 2
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        public string GetAutocompleteResults(Search search)
        {
            if (!ModelState.IsValid)
                throw new Exception("Model dla 'search' jest nieprawidłowy");

            bool error;
            string resultsCounter;
            var books = GetBooks(search, out resultsCounter, out error);

            var dateFormatSettings = new JsonSerializerSettings
            {
                DateFormatHandling = DateFormatHandling.IsoDateFormat,
                ReferenceLoopHandling = ReferenceLoopHandling.Ignore
            };

            return JsonConvert.SerializeObject(books, dateFormatSettings);
        }
Ejemplo n.º 3
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        public ActionResult Index()
        {
            var search = new Search();

            return View(search);
        }
Ejemplo n.º 4
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        public JsonResult GetDefaultSearchProperties()
        {
            var filteredSearchOptions = new Search().ToDictionary().Where(kvp => kvp.Key.GetType() != typeof(List<SelectListItem>)).ToDictionary(kvp => kvp.Key, kvp => kvp.Value);

            return Json(filteredSearchOptions, JsonRequestBehavior.AllowGet);
        }
Ejemplo n.º 5
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        // NIEUŻYWANE
        protected List<Book> GetBooksDynamicLinqExpressions(Search search)
        {
            var db = new ProjectDbContext();
            var books = db.Books;//.Include(b => b.Author);

            var listTerms = search.SearchTerm.Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries)
                .Where(s => s.Length >= 3).ToList().ConvertAll(t => t.ToLower().Replace("|", ""));

            var searchedBooks = books;
            //.AsQueryable().Where(delegate (Book book)
            //{
            //    if (book.IsPublic != true)
            //        return false;

            //    if (listTerms.Count <= 0)
            //        return true;

            //    var sbWhereToSearch = new StringBuilder();
            //    var titleValue = book.Title;
            //    var authorValue = db.Users.Single(u => u.Id == book.AuthorId).UserName;
            //    var categoryValue = book.Category;
            //    var descriptionValue = book.Description;

            //    if (search.IncludeTitle)
            //        sbWhereToSearch.Append(titleValue + " ");

            //    if (search.IncludeAuthor)
            //        sbWhereToSearch.Append(authorValue + " ");

            //    if (search.IncludeCategory)
            //        sbWhereToSearch.Append(categoryValue + " ");

            //    if (search.IncludeDescription)
            //        sbWhereToSearch.Append(descriptionValue + " ");

            //    if (sbWhereToSearch.Length == 0) // jeśli nic nie zostało wybrane
            //        sbWhereToSearch.Append(titleValue + " ");

            //    return listTerms.All(s => sbWhereToSearch.ToString().ToLower().Contains(s));
            //});

            //// Drzewo wyrażenia reprezentujące parametr predykatu
            //ParameterExpression pe = Expression.Parameter(typeof(Book), "book");
            //LabelTarget returnTarget = Expression.Label(typeof(bool));

            //// if (book.IsPublic != true)
            ////     return false;
            //Expression ifBookNotPublic = Expression.IfThen(
            //    Expression.NotEqual(
            //        Expression.Property(pe, typeof(Book).GetProperty("IsPublic")),
            //        Expression.Constant(true)),
            //    Expression.Return(returnTarget, Expression.Constant(false)));

            //// if (listTerms.Count <= 0)
            ////     return true;
            //Expression paramListTerms = Expression.Constant(listTerms);
            //Expression ifListTermsCountLessOrEqualThanZero = Expression.IfThen(
            //    Expression.LessThanOrEqual(
            //        Expression.Property(paramListTerms, typeof(List<string>).GetProperty("Count")),
            //        Expression.Constant(0, typeof(int))),
            //    Expression.Return(returnTarget, Expression.Constant(true)));

            //// listTerms.All(s => sbWhereToSearch.ToString().ToLower().Contains(s));
            //ParameterExpression pTerm = Expression.Parameter(typeof(string), "s");
            //Expression paramSearch = Expression.Constant(search);

            //// if (search.IncludeTitle)
            ////     sbWhereToSearch.Append(titleValue + " ");
            //Expression ifSearchIncludeTitleThenConcat = Expression.IfThen(
            //    Expression.Equal(
            //        Expression.Property(paramSearch, typeof(Search).GetProperty("IncludeTitle")),
            //        Expression.Constant(true)),
            //    Expression. WHAT NOW? );

            //// ===================================
            //var exprBlock = Expression.Block(); // Expression Calls here
            //var searchedBooks = books.AsQueryable().Where(Expression.Lambda<Func<Book, bool>>(exprBlock, pe)); // książki, takie dla których cały blok zwraca true

            var sortedBooks = searchedBooks.OrderBy(search.SortBy + " " + search.SortOrder.ToLower()); // dynamic LINQ query helper

            var pagedBooks = search.HowMuchSkip >= 0 ?
                sortedBooks.Skip(search.HowMuchSkip).Take(search.HowMuchTake) :
                Enumerable.Empty<Book>().AsQueryable();

            //var sql = ((ObjectQuery)pagedBooks).ToTraceString();
            //var linq = pagedBooks.ToString();

            // całe procedurą z LIMIT search.HowMuchSkip OFFSET search.HowMuchTake
            // E:\Program Files\XAMPP\mysql\data\Szymon.log

            return pagedBooks.ToList(); // Error: LINQ to Entities does not recognize the method 'Boolean CheckWhatToSearch(MVCDemo.Models.Book, MVCDemo.Models.Search, System.Collections.Generic.List`1[System.String])' method, and this method cannot be translated into a store expression.
        }
Ejemplo n.º 6
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        // NIEUŻYWANE
        protected List<Book> GetBooksAlternate(Search search)
        {
            var db = new ProjectDbContext();
            var books = db.Books;

            var listTerms = search.SearchTerm.Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries)
                .Where(s => s.Length >= 3).ToList().ConvertAll(t => t.ToLower().Replace("|", ""));

            var searchedBooks = books
                .Where(delegate (Book book)
                {
                    if (book.IsPublic != true)
                        return false;

                    if (listTerms.Count <= 0)
                        return true;

                    var sbWhereToSearch = new StringBuilder();
                    var titleValue = book.Title;
                    var authorValue = db.Users.Single(u => u.Id == book.AuthorId).UserName;
                    var categoryValue = book.Category;
                    var descriptionValue = book.Description;

                    if (search.IncludeTitle)
                        sbWhereToSearch.Append(titleValue + " ");

                    if (search.IncludeAuthor)
                        sbWhereToSearch.Append(authorValue + " ");

                    if (search.IncludeCategory)
                        sbWhereToSearch.Append(categoryValue + " ");

                    if (search.IncludeDescription)
                        sbWhereToSearch.Append(descriptionValue + " ");

                    if (sbWhereToSearch.Length == 0) // jeśli nic nie zostało wybrane
                        sbWhereToSearch.Append(titleValue + " ");

                    return listTerms.All(sbWhereToSearch.ToString().ToLower().Contains); // true jeśli zawiera wszystkie elementy z wpisanych przez usera
                });

            var sortedBooks = searchedBooks.OrderBy(search.SortBy + " " + search.SortOrder.ToLower()); // dynamic LINQ query helper

            var pagedBooks = search.HowMuchSkip >= 0 ?
                sortedBooks.Skip(search.HowMuchSkip).Take(search.HowMuchTake) :
                Enumerable.Empty<Book>().AsQueryable();

            return pagedBooks.ToList();
        }
Ejemplo n.º 7
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        protected List<Book> GetBooks(Search search, out string resultsCounter, out bool error)
        {
            error = false;
            resultsCounter = "n/a";
            var books = Enumerable.Empty<Book>().ToList();

            using (var db = new ProjectDbContext())
            {
                db.Database.Initialize(force: false); // MODEL MUSI BYĆ ZBUDOWANY ZANIM OTWORZYMY POŁĄCZENIE, INACZEJ BĘDZIE BŁĄD, CANNOT USE CONTEXT DURING MODEL CREATING

                var paramSearchTerms = new MySqlParameter { ParameterName = "p_SearchTerms", Value = search.SearchTerm };
                var paramIncludeTitle = new MySqlParameter { ParameterName = "p_IncludeTitle", Value = search.IncludeTitle };
                var paramIncludeAuthor = new MySqlParameter { ParameterName = "p_IncludeAuthor", Value = search.IncludeAuthor };
                var paramIncludeCategory = new MySqlParameter { ParameterName = "p_IncludeCategory", Value = search.IncludeCategory };
                var paramIncludeDescription = new MySqlParameter { ParameterName = "p_IncludeDescription", Value = search.IncludeDescription };
                var paramHowMuchSkip = new MySqlParameter { ParameterName = "p_HowMuchSkip", Value = search.HowMuchSkip };
                var paramHowMuchTake = new MySqlParameter { ParameterName = "p_HowMuchTake", Value = search.HowMuchTake };
                var paramSortBy = new MySqlParameter { ParameterName = "p_SortBy", Value = search.SortBy };
                var paramSortOrder = new MySqlParameter { ParameterName = "p_SortOrder", Value = search.SortOrder };

                var cmd = db.Database.Connection.CreateCommand();
                cmd.CommandText = "sp_SearchBooks";
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Parameters.Add(paramSearchTerms);
                cmd.Parameters.Add(paramIncludeTitle);
                cmd.Parameters.Add(paramIncludeAuthor);
                cmd.Parameters.Add(paramIncludeCategory);
                cmd.Parameters.Add(paramIncludeDescription);
                cmd.Parameters.Add(paramHowMuchSkip);
                cmd.Parameters.Add(paramHowMuchTake);
                cmd.Parameters.Add(paramSortBy);
                cmd.Parameters.Add(paramSortOrder);

                try
                {
                    if (search.HowMuchSkip >= 0)
                    {
                        db.Database.Connection.Open();
                        var reader = cmd.ExecuteReader();

                        resultsCounter = ((IObjectContextAdapter)db)
                            .ObjectContext
                            .Translate<string>(reader).SingleOrDefault();

                        reader.NextResult();
                        books = ((IObjectContextAdapter)db)
                            .ObjectContext
                            .Translate<Book>(reader).ToList(); //.AsQueryable().Include(b => b.Author)
                        reader.Close();

                        var loadedUsers = new List<User>();
                        foreach (var b in books)
                        {
                            var loadedCurrAuthor = loadedUsers.SingleOrDefault(u => b.AuthorId == u.Id);

                            if (loadedCurrAuthor == null)
                                loadedUsers.Add(db.Users.Single(u => b.AuthorId == u.Id));

                            b.Author = loadedUsers.Single(u => b.AuthorId == u.Id);
                        }
                    }
                }
                catch (Exception ex)
                {
                    error = true;
                    return books; // fallback, zwróć pusty zestaw
                }
                finally
                {
                    if (db.Database.Connection.State == ConnectionState.Open)
                        db.Database.Connection.Close();
                }

                return books;
            }
        }
Ejemplo n.º 8
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        public PartialViewResult GetSearchWidget(string controller, string action)
        {
            var search = new Search();

            var dictSearchParams = GetSearchParamsSession();
            if (dictSearchParams != null && dictSearchParams.Count > 0)
            {
                search.SearchTerm = dictSearchParams["SearchTerm".ToLower()] != null ? dictSearchParams["SearchTerm".ToLower()].ToString() : string.Empty;
                search.IncludeAuthor = Convert.ToBoolean(dictSearchParams["IncludeAuthor".ToLower()]);
            }

            ViewBag.Controller = controller;
            ViewBag.Action = action;
            return PartialView("_SearchWidget", search);
        }
Ejemplo n.º 9
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        public JsonResult GetScrollSearchResults(Search search, string scrollDirection)
        {
            if (!ModelState.IsValid || !new[] {"scrollup", "scrolldown"}.Contains(scrollDirection.ToLower()))
                throw new Exception(
                    "Model dla 'search' lub Kierunek sortowania przekazany przez Ajax jest nieprawidłowy");

            var sessSearch = new Search((Dictionary<string, object>) Session["SearchParams"]);
            var expectedSearch = new Search(search) {HowMuchSkip = sessSearch.HowMuchSkip};

            if (Session["SearchParams"] == null || !sessSearch.Equals(expectedSearch))
            {
                //throw new Exception("Sesja jest pusta lub nieprawidłowa"); // fallback
                return Json(new
                {
                    ResultsCount = -2, // Sesja jest pusta lub nieprawidłowa
                    PartialView = string.Empty
                }, JsonRequestBehavior.AllowGet);
            }

            var totalSkip = search.HowMuchSkip + sessSearch.HowMuchSkip;
            search.HowMuchSkip = totalSkip;
            var searchWithoutInvertedValues = new Search(search);

            switch (scrollDirection.ToLower())
            {
                case "scrolldown":
                    totalSkip = search.HowMuchSkip + search.HowMuchTake - 2;
                    search.HowMuchSkip = totalSkip;
                    break;
                case "scrollup":
                    totalSkip = search.HowMuchSkip; // dummy, do usunięcia
                    search.HowMuchSkip = totalSkip;
                    break;
                default:
                    throw new Exception("Niepoprawny kierunek przewijania. ");
            }

            search.HowMuchTake = 2;
            bool error;
            string resultsCounter;
            var books = GetBooks(search, out resultsCounter, out error);

            if (books.Count <= 0)
                return Json(new
                {
                    ResultsCount = error ? -1 : books.Count,
                    ResultsCounter = resultsCounter,
                    PartialView = string.Empty
                }, JsonRequestBehavior.AllowGet);

            SaveSearchParamsSession(searchWithoutInvertedValues.ToDictionary());

            // parsować do liczb if scrolldown dodac z dolu scrollup z gory
            resultsCounter = resultsCounter.Trim().Replace(" ", string.Empty);
                // obsługuję resultsCounter tylko jeżeli są wyniki
            var parsedFrom = Convert.ToInt32(resultsCounter.Substring(0, resultsCounter.IndexOf('-')));
            if (scrollDirection.ToLower() == "scrolldown")
                parsedFrom -= 10;
            var parsedTo =
                Convert.ToInt32(resultsCounter.Substring(resultsCounter.LastIndexOf('-') + 1,
                    resultsCounter.IndexOf('z') - resultsCounter.LastIndexOf('-') - 1));
            if (scrollDirection.ToLower() == "scrollup")
                parsedTo += 10;
            var parsedTotal =
                Convert.ToInt32(resultsCounter.Substring(resultsCounter.LastIndexOf('z') + 1,
                    resultsCounter.LastIndexOf('(') - resultsCounter.LastIndexOf('z') - 1));
            var parsedCount =
                Convert.ToInt32(resultsCounter.Substring(resultsCounter.LastIndexOf('(') + 1,
                    resultsCounter.LastIndexOf(')') - resultsCounter.LastIndexOf('(') - 1)) + 10;
            //if (parsedCount < parsedTo - parsedFrom) // obsłużone w bazie danych
            //    parsedTo = parsedFrom + parsedCount;

            resultsCounter = parsedFrom + " - " + parsedTo + " z " + parsedTotal + " (" + parsedCount + ")";

            return Json(new
            {
                ResultsCount = books.Count,
                ResultsCounter = resultsCounter,
                PartialView = RenderPartialView("_SearchResults", books)
            }, JsonRequestBehavior.AllowGet);
        }
Ejemplo n.º 10
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        public ActionResult Index(Search search)
        {
            if (!ModelState.IsValid)
                throw new Exception("Model dla 'search' jest nieprawidłowy");

            var requestType = System.Web.HttpContext.Current.Request.HttpMethod;
            var searchOptions = new Search {HowMuchTake = 12};

            var dictDefaultSearchOptions = searchOptions.ToDictionary();
            var dictSessionSearchOptions = GetSearchParamsSession();
            var dictPostedSearchOptions = new Dictionary<string, object>();

            if (requestType == "POST")
            {
                dictPostedSearchOptions.Add("searchTerm", search.SearchTerm);
                dictPostedSearchOptions.Add("includeAuthor", search.IncludeAuthor);
            }

            var dictMergedSearchOptions = dictDefaultSearchOptions;
            if (dictSessionSearchOptions != null && requestType == "GET")
                dictMergedSearchOptions = MergeDictonaries(dictMergedSearchOptions, dictSessionSearchOptions);
            if (requestType == "POST")
                dictMergedSearchOptions = MergeDictonaries(dictMergedSearchOptions, dictPostedSearchOptions);

            SaveSearchParamsSession(dictMergedSearchOptions);
            return View();
        }
Ejemplo n.º 11
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        public JsonResult GetSearchResults(Search search)
        {
            if (!ModelState.IsValid)
                throw new Exception("Model dla 'search' jest nieprawidłowy");

            bool error;
            string resultsCounter;
            var books = GetBooks(search, out resultsCounter, out error);

            SaveSearchParamsSession(search.ToDictionary());

            if (books.Count <= 0)
            {
                return Json(new
                {
                    ResultsCount = error ? -1 : books.Count,
                    ResultsCounter = resultsCounter,
                    PartialView = string.Empty
                }, JsonRequestBehavior.AllowGet);
            }

            return Json(new
            {
                ResultsCount = books.Count,
                ResultsCounter = resultsCounter,
                PartialView = RenderPartialView("_SearchResults", books)
            }, JsonRequestBehavior.AllowGet);
        }
Ejemplo n.º 12
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        public PartialViewResult GetSearchOptions(string controller, string action)
        {
            var search = new Search {HowMuchTake = 12};

            var dictSearchParams = GetSearchParamsSession();
            if (dictSearchParams != null && dictSearchParams.Count > 0)
            {
                search = new Search(dictSearchParams);
            }

            ViewBag.Controller = controller;
            ViewBag.Action = action;
            return PartialView("_SearchOptions", search);
        }