public void SaveProducts_WithCategory_ShouldSaveAssociation()
{
// Create the category and the products
var category = new Category { Name = "Category1" };
var product1 = new Product { Name = "Product1", Discontinued = false };
var product2 = new Product { Name = "Product2", Discontinued = false };
var product3 = new Product { Name = "Product3", Discontinued = false };
// Associate the products with the category
product1.Category = category;
product2.Category = category;
product3.Category = category;
// Save everything in the session and commit the transaction
using (var session = this.sessionFactory.OpenSession())
using (var transaction = session.BeginTransaction())
{
session.Save(category);
session.Save(product1);
session.Save(product2);
session.Save(product3);
transaction.Commit();
}
// Get the values from the DB and check the results
using (var session = this.sessionFactory.OpenSession())
{
var categoryFromDb = session.Get<Category>(category.Id);
Assert.IsNotNull(categoryFromDb.Products);
Assert.IsTrue(categoryFromDb.Products.Count == 3);
}
}
public void SaveOnlyCategory_WithProducts_ShouldThrowException()
{
// Create the category and the products
var category = new Category { Name = "Category1" };
var product1 = new Product { Name = "Product1", Discontinued = false };
var product2 = new Product { Name = "Product2", Discontinued = false };
var product3 = new Product { Name = "Product3", Discontinued = false };
// Associate the products with the category
category.Products = new List<Product> { product1, product2, product3 };
// Save everything in the session and commit the transaction
using (var session = this.sessionFactory.OpenSession())
using (var transaction = session.BeginTransaction())
{
session.Save(category);
// NHibernate will throw a TransientObjectException here
// because the 'cascade' attribute is set to 'none'
transaction.Commit();
}
}
