public void CanCheckIfConstraintIsValid()
{
var customer = new Customer
{
Number = 61,
Firstname = "Peter John",
Lastname = "Sylvester",
Email = "*****@*****.**"
};
var checkResult = _session.CheckForUniqueConstraints(customer);
Assert.IsFalse(checkResult.ConstraintsAreFree());
}
static void Main(string[] args)
{
{
Console.WriteLine("RavenDb Test program started.");
SimulateErrorOnInserting();
SimulateErrorOnUpdating();
SimulateCheckingUniqueConstraintsBeforeInserting();
Console.WriteLine("Press anykey to exit.");
Console.ReadKey();
}
void SimulateErrorOnInserting()
{
Console.WriteLine("Simulate Error On Inserting...");
using (IDocumentSession session = DocumentStoreHolder.Store.OpenSession())
{
// insert Product 1
var product1 = new Product
{
ProductId = new Guid(product1Id),
ProductName = "Laptop",
Gtin = "ABC12345"
};
session.Store(product1, product1.ProductId.ToString());
// insert Product 2 with same Gtin
var product2 = new Product
{
ProductId = new Guid(product2Id),
ProductName = "Monitor",
Gtin = "ABC12345"
};
session.Store(product2, product2.ProductId.ToString());
try
{
session.SaveChanges();
}
catch (ErrorResponseException ex)
{
if (ex.Message.Contains("OperationVetoedException") && ex.Message.Contains("UniqueConstraintsPutTrigger"))
{
Console.WriteLine($"Product Gtin is not unique.");
}
else
{
Console.WriteLine(ex.Message);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
Console.WriteLine(new string('-', 50));
}
void SimulateErrorOnUpdating()
{
Console.WriteLine("Simulate Error On Updating...");
using (IDocumentSession session = DocumentStoreHolder.Store.OpenSession())
{
// insert Product 1
var product1 = new Product
{
ProductId = new Guid(product1Id),
ProductName = "Laptop",
Gtin = "ABC12345"
};
session.Store(product1, product1.ProductId.ToString());
// insert Product 2 with different Gtin
var product2 = new Product
{
ProductId = new Guid(product2Id),
ProductName = "Monitor",
Gtin = "XYZ12345"
};
session.Store(product2, product2.ProductId.ToString());
// update Product2 Gtin with Product1 Gtin
var product = session.Load <Product>(product2Id);
product.Gtin = "ABC12345";
try
{
session.SaveChanges();
}
catch (ErrorResponseException ex)
{
if (ex.Message.Contains("OperationVetoedException") && ex.Message.Contains("UniqueConstraintsPutTrigger"))
{
Console.WriteLine($"Product Gtin is not unique.");
}
else
{
Console.WriteLine(ex.Message);
}
}
}
Console.WriteLine(new string('-', 50));
}
void SimulateCheckingUniqueConstraintsBeforeInserting()
{
Console.WriteLine("Simulate Checking Unique Constraints Before Inserting...");
using (IDocumentSession session = DocumentStoreHolder.Store.OpenSession())
{
// insert Product 1
var product1 = new Product
{
ProductId = new Guid(product1Id),
ProductName = "Laptop",
Gtin = "ABC12345"
};
var checkResult = session.CheckForUniqueConstraints(product1);
// insert only if there are no unique constraints
if (checkResult.ConstraintsAreFree())
{
session.Store(product1, product1.ProductId.ToString());
session.SaveChanges();
}
}
using (IDocumentSession session = DocumentStoreHolder.Store.OpenSession())
{
// insert Product 2 with same Gtin
var product2 = new Product
{
ProductId = new Guid(product2Id),
ProductName = "Monitor",
Gtin = "ABC12345"
};
var checkResult = session.CheckForUniqueConstraints(product2);
// insert only if there are no unique constraints
if (checkResult.ConstraintsAreFree())
{
session.Store(product2);
}
else
{
var existingProduct = checkResult.DocumentForProperty(x => x.Gtin);
Console.WriteLine($"Gtin value: {product2.Gtin} belongs to product id: {existingProduct.ProductId}");
}
}
Console.WriteLine(new string('-', 50));
}
}