public void Save(PandaSocialNetwork network, string fileName)
{
using (Stream stream = new FileStream(fileName + ".bin", FileMode.Create, FileAccess.Write, FileShare.None))
{
formatter.Serialize(stream, network);
}
}
public void Save(PandaSocialNetwork network, string connectionString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
SqlCommand deleteCommand = new SqlCommand("DELETE FROM Panda", connection);
SqlCommand deleteFriend = new SqlCommand("DELETE FROM PandaFriends", connection);
SqlCommand reseed = new SqlCommand("DBCC CHECKIDENT (Panda, RESEED, 0)", connection);
deleteFriend.ExecuteNonQuery();
deleteCommand.ExecuteNonQuery();
reseed.ExecuteNonQuery();
string addPandaToDbCommand = "INSERT INTO Panda (Name,Email,Gender) VALUES (@name,@email,@gender)";
string addFirendCommand = "INSERT INTO PandaFriends (Panda_Id,Friend_Id) VALUES (@pandaId,@friendId)";
foreach (var panda in network.AllPandasAndFriends)
{
SqlCommand addPandaToDbSQLCommand = new SqlCommand(addPandaToDbCommand, connection);
addPandaToDbSQLCommand.Parameters.AddWithValue("@name", panda.Key.Name);
addPandaToDbSQLCommand.Parameters.AddWithValue("@email", panda.Key.Email);
addPandaToDbSQLCommand.Parameters.AddWithValue("@gender", panda.Key.Gender);
addPandaToDbSQLCommand.ExecuteNonQuery();
}
string getAllPandas = "SELECT * FROM Panda";
SqlCommand getAllPandasSQL = new SqlCommand(getAllPandas, connection);
var reader = getAllPandasSQL.ExecuteReader();
var pandaList = new List<Panda>();
while (reader.Read())
{
var panda = new Panda((string)reader["Name"], (string)reader["Email"], (GenderType)reader["Gender"]);
panda.Id = (int)reader["Id"];
pandaList.Add(panda);
}
reader.Close();
foreach (var panda in pandaList)
{
var friends = network.FriendsOf(panda);
foreach (var friend in friends)
{
foreach (var equalFriend in pandaList)
{
if (friend.Equals(equalFriend))
{
friend.Id = equalFriend.Id;
}
}
}
foreach (var friend in friends)
{
SqlCommand addFriendCommandSQL = new SqlCommand(addFirendCommand, connection);
addFriendCommandSQL.Parameters.AddWithValue("@pandaId", panda.Id);
addFriendCommandSQL.Parameters.AddWithValue("@friendId", friend.Id);
addFriendCommandSQL.ExecuteNonQuery();
}
}
}
}
public PandaSocialNetwork Load(string connectionString)
{
using (var connection = new SqlConnection(connectionString))
{
connection.Open();
var network = new PandaSocialNetwork();
string getAllPandas = "SELECT * FROM Panda";
SqlCommand getAllPandasSQL = new SqlCommand(getAllPandas, connection);
var reader = getAllPandasSQL.ExecuteReader();
var pandaList = new List<Panda>();
while (reader.Read())
{
var panda = new Panda((string)reader["Name"], (string)reader["Email"], (GenderType)reader["Gender"]);
panda.Id = (int)reader["Id"];
pandaList.Add(panda);
}
reader.Close();
foreach (var panda in pandaList)
{
if (!network.HasPanda(panda))
{
network.AddPanda(panda);
}
string getFiendsCommand = "SELECT pf.Friend_Id FROM PandaSocialNetowrk.dbo.PandaFriends pf JOIN PandaSocialNetowrk.dbo.Panda p ON p.Id = pf.Panda_Id WHERE pf.Panda_Id = @pandaId";
SqlCommand getFriendsSQL = new SqlCommand(getFiendsCommand, connection);
getFriendsSQL.Parameters.AddWithValue("@pandaId", panda.Id);
var idReader = getFriendsSQL.ExecuteReader();
while (idReader.Read())
{
int id = (int)idReader["Friend_Id"];
var friend = pandaList.Where(p => p.Id == id).LastOrDefault();
if (!network.AreFriends(panda,friend))
{
network.MakeFriends(panda, friend);
}
}
idReader.Close();
}
return network;
}
}
public void TestInitialize()
{
network = new PandaSocialNetwork();
ivo = new Panda("Ivo", "*****@*****.**", GenderType.Male);
rado = new Panda("Rado", "*****@*****.**", GenderType.Male);
tony = new Panda("Tony", "*****@*****.**", GenderType.Female);
pesho = new Panda("Pesho", "*****@*****.**", GenderType.Male);
}