I have a concern since as I am new to using EntityFramework Core, that if I add an object, that I still do not have the id generated by the database, sending the object to it in the transaction, I would add it automatically, this is my code ,
public async Task<ServiceResult<Common.Entities.Company>> SaveCompany(Domain.Models.Company companyModel, Domain.Models.Administrator administratoModel)
{
ServiceResult<Common.Entities.Company> serviceResult = new ServiceResult<Common.Entities.Company>();
try
{
if (user == null && companyExistsRnc == false)
{
Common.Entities.Company myCompany = new Common.Entities.Company
{
CompanyId = companyModel.CompanyId, // The id has not been generated yet,
CompanyName = companyModel.CompanyName,
Rnc = companyModel.Rnc,
CountryId = companyModel.Country.CountryId,
Telephone = companyModel.Telephone,
PersonContact = companyModel.PersonContact,
Address = companyModel.Address,
PhotoPath = companyModel.PhotoPath,
IsActive = false,
};
await _companyRepository.SaveCompany(myCompany); // this is the method that I add the company object to the database and do the savechanges
Common.Entities.User myUser = new Common.Entities.User
{
FirstName = administratoModel.FirstName,
SecondName = administratoModel.SecondName,
FirstLastName = administratoModel.FirstLastName,
SecondLastName = administratoModel.SecondLastName,
GenderId = administratoModel.Gender.GenderId,
PhoneNumber = administratoModel.Telephone,
Email = administratoModel.Email,
UserName = administratoModel.Email,
IsActive = administratoModel.IsActive,
UserTypeId = (short)Common.Core.UserType.Administrator,
Company = myCompany, // here I send the my company object for when I do the savechanges, I think it will add it to me
};
await _userHelper.AddUserAsync(myUser, administratoModel.Password);
await _userHelper.AddUserToRoleAsync(myUser, Common.Core.UserType.Administrator.ToString());
Common.Entities.Administrator myAdministrator = new Common.Entities.Administrator
{
AdministratorId = administratoModel.AdministratorId,
FirstName = administratoModel.FirstName,
SecondName = administratoModel.SecondName,
FirstLastName = administratoModel.FirstLastName,
SecondLastName = administratoModel.SecondLastName,
GenderId = administratoModel.Gender.GenderId,
Email = administratoModel.Email,
Telephone = administratoModel.Telephone,
IsActive = true,
PhotoPath = administratoModel.PhotoPath,
UserTypeId = (short)Common.Core.UserType.Administrator,
Company = myCompany, // company object without the id
User = myUser, // user object without the id
};
await _administratorRepository.SaveAdministrator(myAdministrator);
serviceResult.Data = myCompany;
serviceResult.Message = "Compañia agregada!";
}
}
I am new to using entity framework core, and if in case I am wrong in what I am doing please indicate in which part I am doing it wrong, to correct, I await your comments and would appreciate the help,
Related
We have worked on this code to error trap a value entered in a Edit Text field
When the value is entered correctly we are informed that the entered value does not match
BUT if we select the value from a recycler view list and populate the Edit Text field with the value the search tells us we have a match
Here is the code for the search in the DBHelper
fun getOneName(id: Int): Contact? {
val db = this.writableDatabase
val selectQuery = "SELECT * FROM $TABLE_NAME WHERE $colId = ?"
db.rawQuery(selectQuery, arrayOf(id.toString())).use { // .use requires API 16
if (it.moveToFirst()) {
val result = Contact(id = 0,name ="")
result.id = it.getInt(it.getColumnIndex(colId))
result.name = it.getString(it.getColumnIndex(colName))
return result
}
}
return null
}
We used this for the Model Class our first time using data class as just plain class
data class Contact (
var id: Int,
var name: String
)
And here is the button click that manages the search
btnGetID.setOnClickListener {
if(etPerson.text.toString().trim().isNullOrEmpty()){
message("Enter Contact Name")
return#setOnClickListener
}
var numeric = true
var string = etPerson.text.toString().trim()
numeric = string.matches(".*\\d+.*".toRegex())
if(numeric){
message("No NUMBERS")
return#setOnClickListener
}
val dbManager = DBHelper(this)
var name = etPerson.text.toString()
//val contact = dbManager.getOneName(name)
val contact = dbManager.getOneName(id.toInt())
if(contact?.name.equals(name)){
println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! contact ID= "+contact)
etPerson.setText("The contact name is $name the ID is "+contact?.id.toString())
}else{
etPerson.setText("Name NOT = to $name and the ID is "+contact?.id.toString())
}
}
We know the name Sally is in the DB if we type Sally in the else statement shows Name NOT = bla
If we select Sally from the Recyclerview List the first statement shows The contact name bla bla
Kotlin 1.2.71 API 27
Our question is why is the hand typed name failing if it mataches?
HERE IS THE CORRECT CODE FOR THE DBHelper
fun getOneName(name: String): Contact? {
val db = this.writableDatabase
val selectQuery = "SELECT * FROM $TABLE_NAME WHERE $colName = ?"
db.rawQuery(selectQuery, arrayOf(name)).use { // .use requires API 16
if (it.moveToFirst()) {
val result = Contact(id = 0,name ="")
result.id = it.getInt(it.getColumnIndex(colId))
result.name = it.getString(it.getColumnIndex(colName))
return result
}
}
return null
}
I have a SQL table called Apuntes:
codigo (PK)
nombre
Proveedor (FK)
Materia
Costo
Precio
Stock Minimo
I got this code on mi LINQ DAL Layer:
public static Apuntes UpdateByCodigo(Apuntes LLevarDatos)
{
Apuntes Update = (from u in db.Apuntes
where u.Codigo.Equals(LLevarDatos.Codigo)
select u).FirstOrDefault();
//Update = LLevarDatos;
Update.Nombre = LLevarDatos.Nombre;
Update.Proveedor = LLevarDatos.Proveedor;
Update.Materia = LLevarDatos.Materia;
Update.Costo = LLevarDatos.Costo;
Update.Precio = LLevarDatos.Precio;
Update.StockMinimo = LLevarDatos.StockMinimo;
db.SubmitChanges();
return Update;
}
and in my Winforms Layer:
string CUITPK = DAL_Apuntes_Stock.BuscaCUIT(cmbProveedor.Text).CUIT;
Apuntes LlevarDatos = new Apuntes();
LlevarDatos.Codigo = txtCodigo.Text;
LlevarDatos.Nombre = txtNombre.Text;
LlevarDatos.Proveedor = CUITPK;
LlevarDatos.Materia = cmbMateria.Text;
LlevarDatos.Costo = txtCosto.Text;
LlevarDatos.Precio = txtPrecio.Text;
LlevarDatos.StockMinimo = Convert.ToInt32(txtStockMinimo.Text);
DAL_Apuntes_Stock.UpdateByCodigo(LlevarDatos);
MessageBox.Show("OK", "info");
the error I am receiving is
ForeignKeyReferenceAlreadyHasValueException in the following line:
LlevarDatos.Proveedor = CUITPK;
Anyone have any ideas on this?
You likely need to assign the entity, not just the value.
Something like the below:
//Assuming your Proveedor foreignKey is a string and not an int
LlevarDatos.Proveedor = yourDataSource.Proveedor.Single(x.Id == CUITPK);
I have an Account object, which has many Transactions related to it.
In one method, I get all transactions for a particular account.
var transactionlines = (from p in Context.account_transaction
.Include("account_transaction_line")
// .Include("Account")
.Include("account.z_account_type")
.Include("account.institution")
.Include("third_party")
.Include("third_party.z_third_party_type")
.Include("z_account_transaction_type")
.Include("account_transaction_line.transaction_sub_category")
.Include("account_transaction_line.transaction_sub_category.transaction_category")
.Include("z_account_transaction_entry_type")
.Include("account_transaction_line.cost_centre")
where p.account_id == accountId
&& p.deleted == null
select p).ToList();
This is meant to return me a list of transactions, with their related objects. I then pass each object to a Translator, which translates them into data transfer objects, which are then passed back to my main application.
public TransactionDto TranslateTransaction(account_transaction source)
{
LogUserActivity("in TranslateTransaction");
var result = new TransactionDto
{
Id = source.id,
Version = source.version,
AccountId = source.account_id,
// Account = TranslateAccount(source.account, false),
ThirdPartyId = source.third_party_id,
ThirdParty = TranslateThirdParty(source.third_party),
Amount = source.transaction_amount,
EntryTypeId = source.account_transaction_entry_type_id,
EntryType = new ReferenceItemDto
{
Id = source.account_transaction_entry_type_id,
Description = source.z_account_transaction_entry_type.description,
Deleted = source.z_account_transaction_entry_type.deleted != null
},
Notes = source.notes,
TransactionDate = source.transaction_date,
TransactionTypeId = source.account_transaction_type_id,
TransactionType = new ReferenceItemDto
{
Id = source.z_account_transaction_type.id,
Description = source.z_account_transaction_type.description,
Deleted = source.z_account_transaction_type.deleted != null
}
};
... return my object
}
The problem is:
An account has Transactions, and a Transaction therefore belongs to an Account. It seems my translators are being called way too much, and reloading a lot of data because of this.
When I load my transaction object, it's 'account' property has a'transactions' propery, which has a list of all the transactions associated to that account. Each transaction then has an account property... and those account peroprties again, have a list of all the transactions... and on and on it goes.
Is there a way I can limit the loading to one level or something?
I have this set:
Context.Configuration.LazyLoadingEnabled = false;
I was hoping my 'Includes' would be all that is loaded... Don't load 'un-included' related data?
As requested, here is my TranslateAccount method:
public AccountDto TranslateAccount(account p, bool includeCardsInterestRateDataAndBalance)
{
LogUserActivity("in TranslateAccount");
if (p == null)
return null;
var result =
new AccountDto
{
Id = p.id,
Description = p.description,
PortfolioId = p.institution.account_portfolio_id,
AccountNumber = p.account_number,
Institution = TranslateInstitution(p.institution),
AccountType = new ReferenceItemDto
{
Id = p.account_type_id,
Description = p.z_account_type.description
},
AccountTypeId = p.account_type_id,
InstitutionId = p.institution_id,
MinimumBalance = p.min_balance,
OpeningBalance = p.opening_balance,
OpeningDate = p.opening_date
};
if (includeCardsInterestRateDataAndBalance)
{
// Add the assigned cards collection
foreach (var card in p.account_card)
{
result.Cards.Add(new AccountCardDto
{
Id = card.id,
AccountId = card.account_id,
Active = card.active,
CardHolderName = card.card_holder_name,
CardNumber = card.card_number,
ExpiryDate = card.expiry
});
}
// Populate the current interest rate
result.CurrentRate = GetCurrentInterestRate(result.Id);
// Add all rates to the account
foreach (var rate in p.account_rate)
{
result.Rates.Add(
new AccountRateDto
{
Id = rate.id,
Description = rate.description,
Deleted = rate.deleted != null,
AccountId = rate.account_id,
EndDate = rate.end_date,
Rate = rate.rate,
StartDate = rate.start_date
});
}
result.CurrentBalance = CurrentBalance(result.Id);
}
LogUserActivity("out TranslateAccount");
return result;
}
The entity framework context maintains a cache of data that has been pulled out of the database. Regardless of lazy loading being enabled/disabled, you can call Transaction.Account.Transactions[0].Account.Transactions[0]... as much as you want without loading anything else from the database.
The problem is not in the cyclical nature of entity framework objects - it is somewhere in the logic of your translation objects.
I'm trying to implement windows azure table storage...but I'm getting 'Table Not Found'
Here is my connection string(How post I xml here?)(sorry for links)
ServiceConfiguration.Cloud.cscfg:
http://pastebin.com/F9tuckfT
ServiceConfiguration.Local.cscfg:
http://pastebin.com/XZHEvv6g
and here there's a print screen from my windows azure portal
http://s20.postimage.org/nz1sxq7hp/print.png
The code(sorry for the longer code...but there's three pages...Login works, when I log in, go to main.aspx that call grid.aspx ...In grid.aspx I get the error "Table not found" All this code is important for the question.....) http://pastebin.com/RnuvvqsM
I have tried
private void popula()
{
var account = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("Conn"));
account.CreateCloudTableClient().CreateTableIfNotExist("fiscal");
var context = new CRUDManifestacoesEntities(account.TableEndpoint.ToString(), account.Credentials);
Hashtable ht = (Hashtable)ViewState["filtro"];
if (ht == null)
GridView1.DataSource = context.SelectConc(ViewState["x"].ToString());
else
GridView1.DataSource = context.SelectConc(ht);
GridView1.DataBind();
}
but it doesn't work too
Other error similar is when I try to add a USER in table
public string addusr(string nome, string cidade, string cpf, string email, string telefone)
{
try
{
if (nome.Length == 0)
return "f:Preencha o campo nome.";
if (cidade.Length == 0)
return "f:Preencha o campo cidade.";
if (cpf.Length == 0)
return "f:Preencha o campo cpf.";
if (!Valida(cpf))
return "f:CPF Invalido.";
if (email.Length == 0)
return "f:Preencha o campo email.";
Regex rg = new Regex(#"^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)#([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$");
if (!rg.IsMatch(email))
{
return "f:Email Invalido";
}
List<UserEntity> lst = new List<UserEntity>();
var _account = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("Conn"));
_account.CreateCloudTableClient().CreateTableIfNotExist("fiscal");
var _context = new CRUDUserEntities(_account.TableEndpoint.ToString(), _account.Credentials);
var account = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("Conn"));
account.CreateCloudTableClient().CreateTableIfNotExist("fiscal");
var context = new CRUDUserEntities(account.TableEndpoint.ToString(), account.Credentials);
UserClientEntity entity = new UserClientEntity() { nome = nome, cidade = cidade, cpf = cpf, email = email, telefone = telefone };
context.ADDUSociate(entity);
context.SaveChanges();
return "k";
}
I'm getting this error:
f:An error occurred while processing this request.| at System.Data.Services.Client.DataServiceContext.SaveResult.HandleBatchResponse()
at System.Data.Services.Client.DataServiceContext.SaveResult.EndRequest()
at System.Data.Services.Client.DataServiceContext.SaveChanges(SaveChangesOptions options)
at AzureTableLayer.CRUDUserEntities.ADDUSociate(UserClientEntity entity)
at mobile.Service1.addusr(String nome, String cidade, String cpf, String email, String telefone)
I believe that the two problems are related
EDIT: I have debugged and discovered that the StorageClient framework could not be loaded...
I'm getting this error Could not load file or assembly Microsoft.WindowsAzure.StorageClient, Version=1.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
How to solve?
How are you trying to work with Table Storage? Trought the .NET SDK? PHP? Java? Node? ... Typically if you get this error it means that... the table does not exist.
Check the SDK you're using for a method similar to CreateIfNotExists in order to create the table before you start using it.
Edit:
The issue probably happens here:
var account = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("Conn"));
var context = new CRUDManifestacoesEntities(account.TableEndpoint.ToString(), account.Credentials);
Hashtable ht = (Hashtable)ViewState["filtro"];
if (ht == null)
GridView1.DataSource = context.SelectConc(ViewState["x"].ToString());
else
GridView1.DataSource = context.SelectConc(ht);
Add the following code after the var account = ... line:
account.CreateCloudTableClient().CreateTableIfNotExist("<name of your table>");
The API has been changed. you need to do it like this:
var key = CloudConfigurationManager.GetSetting("Setting1");
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(key);
var client = storageAccount.CreateCloudTableClient();
CloudTable table = client.GetTableReference(ContactTableName);
table.CreateIfNotExists();
I got this code to update only the specific fields of an object.
var myEntity = new DBEntity { Id = 1, Field1 = true, Field2 = "Test" };
context.DBEntities.Attach(myEntity);
var entry = context.Entry(myEntity);
entry.Property(x => x.Field1).IsModified = true;
entry.Property(x => x.Field2).IsModified = true;
context.SaveChanges();
This work perfectly. Now i want to add a log entry to my entity object, each time someone makes an update i want to track it in my logs.
var myEntity = new DBEntity { Id = 1, Field1 = true, Field2 = "Test" };
var logEntry = new DBEntityLog { LogText = "Update to field1 and field2" };
myEntity.Logs.Add(logEntry);
context.DBEntities.Attach(myEntity);
var entry = context.Entry(myEntity);
entry.Property(x => x.Field1).IsModified = true;
entry.Property(x => x.Field2).IsModified = true;
// Property does not work on collection objects
context.SaveChanges();
Now how can i save the logEntry to the database as well? Right now it will still only update the fields.
Problem solved by fetching the log entry and set the EntityState to added.
var entryLog = cibtext,Entry(logEntry);
entryLog.State = EntityState.Added;