Пример #1
0
        static void CreateData()
        {
            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.Database.EnsureDeleted();
                ctx.Database.EnsureCreated();

                var f1 = new Flight { From = "Vienna", To = "London", Date = DateTime.Now };
                var b1 = new Booking { Price = 300 };
                f1.Bookings.Add(b1);

                ctx.Flights.Add(f1); 
                ctx.SaveChanges();

                #region addFurtherData

                var f2 = new Flight { From = "Vienna", To = "London", Date = DateTime.Now.AddHours(1) };
                var f3 = new Flight { From = "Graz", To = "Hamburg", Date = DateTime.Now.AddHours(2) };
                var f4 = new Flight { From = "Hamburg", To = "Graz", Date = DateTime.Now.AddHours(3) };
                var f5 = new Flight { From = "Vienna", To = "London", Date = DateTime.Now.AddHours(4) };
                var f6 = new Flight { From = "Graz", To = "Hamburg", Date = DateTime.Now.AddHours(5) };
                var f7 = new Flight { From = "Vienna", To = "London", Date = DateTime.Now.AddHours(6) };

                ctx.Flights.AddRange(f2, f3, f4, f5, f6);
                ctx.Flights.Add(f7);

                ctx.SaveChanges();

                #endregion

            }
        }
Пример #2
0
        // Mixed Server/Client-Evaluation
        static void ClientEval()
        {
            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.LogToConsole();

                var flight = ctx.Flights
                             .Where(f => f.Date >= DateTime.Today &&
                                    CheckRoute(f, "Vienna-London"))
                             .ToList();

                // ... do stuff ...
            }
        }
Пример #3
0
        static void EagerLoading()
        {
            using (FlugDbContext ctx = new FlugDbContext())
            {
                var flight = ctx.Flights
                             //.Include(f => f.Bookings.Select(b => b.Passenger))
                             .Include(f => f.Bookings)
                             .ThenInclude(b => b.Passenger)
                             .Where(f => f.From == "Vienna")
                             .ToList();

                // ... do stuff ...
            }
        }
Пример #4
0
        static void CreateData()
        {
            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.Database.EnsureDeleted();
                ctx.Database.EnsureCreated();

                var f1 = new Flight {
                    From = "Vienna", To = "London", Date = DateTime.Now
                };
                var b1 = new Booking {
                    Price = 300
                };
                f1.Bookings.Add(b1);

                ctx.Flights.Add(f1);
                ctx.SaveChanges();

                #region addFurtherData

                var f2 = new Flight {
                    From = "Vienna", To = "London", Date = DateTime.Now.AddHours(1)
                };
                var f3 = new Flight {
                    From = "Graz", To = "Hamburg", Date = DateTime.Now.AddHours(2)
                };
                var f4 = new Flight {
                    From = "Hamburg", To = "Graz", Date = DateTime.Now.AddHours(3)
                };
                var f5 = new Flight {
                    From = "Vienna", To = "London", Date = DateTime.Now.AddHours(4)
                };
                var f6 = new Flight {
                    From = "Graz", To = "Hamburg", Date = DateTime.Now.AddHours(5)
                };
                var f7 = new Flight {
                    From = "Vienna", To = "London", Date = DateTime.Now.AddHours(6)
                };

                ctx.Flights.AddRange(f2, f3, f4, f5, f6);
                ctx.Flights.Add(f7);

                ctx.SaveChanges();

                #endregion
            }
        }
Пример #5
0
        static void Merge()
        {
            Flight flight;

            using (FlugDbContext ctx = new FlugDbContext())
            {
                flight = ctx.Flights
                         .Include(f => f.Bookings)
                         .FirstOrDefault(f => f.Id == 1);
            }

            flight.Date = flight.Date.AddMinutes(30);

            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.ChangeTracker.TrackGraph(flight, (node) => {
                    node.Entry.State = EntityState.Modified;
                });
                ctx.SaveChanges();
            }
        }
Пример #6
0
        static void UpdateDetached()
        {
            Flight flight;

            using (FlugDbContext ctx = new FlugDbContext())
            {
                flight = ctx.Flights
                         .Include(f => f.Bookings)
                         .FirstOrDefault(f => f.Id == 1);
            }

            flight.Date = flight.Date.AddMinutes(30);
            flight.Bookings.Add(new Booking {
                Price = 222
            });

            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.Flights.Update(flight);
                ctx.SaveChanges();
            }
        }
Пример #7
0
        // Mixed Server/Client-Evaluation
        static void ClientEval()
        {
            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.LogToConsole();

                var flight = ctx.Flights
                                .Where(f => f.Date >= DateTime.Today
                                                && CheckRoute(f, "Vienna-London"))
                                .ToList();

                // ... do stuff ...
            }
        }
Пример #8
0
        static void EagerLoading()
        {
            using (FlugDbContext ctx = new FlugDbContext())
            {
                var flight = ctx.Flights
                                //.Include(f => f.Bookings.Select(b => b.Passenger))
                                .Include(f => f.Bookings)
                                .ThenInclude(b => b.Passenger)
                                .Where(f => f.From == "Vienna")
                                .ToList();

                // ... do stuff ...
            }
        }
Пример #9
0
        static void Merge()
        {
            Flight flight;

            using (FlugDbContext ctx = new FlugDbContext())
            {
                flight = ctx.Flights
                            .Include(f => f.Bookings)
                            .FirstOrDefault(f => f.Id == 1);
            }

            flight.Date = flight.Date.AddMinutes(30);

            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.ChangeTracker.TrackGraph(flight, (node) => {
                    node.Entry.State = EntityState.Modified;
                });
                ctx.SaveChanges();
            }
        }
Пример #10
0
        static void UpdateDetached()
        {
            Flight flight;

            using (FlugDbContext ctx = new FlugDbContext())
            {
                flight = ctx.Flights
                            .Include(f => f.Bookings)
                            .FirstOrDefault(f => f.Id == 1);
            }

            flight.Date = flight.Date.AddMinutes(30);
            flight.Bookings.Add(new Booking { Price = 222 });

            using (FlugDbContext ctx = new FlugDbContext())
            {
                ctx.Flights.Update(flight); 
                ctx.SaveChanges();          
            }
        }