public ProductManagerChangeSet CreateChangeSet(IEnumerable <Product> products, IEnumerable <ProductCategory> productCategories)
{
// retrieve changes sets (modified entities)
var productChangeSet = GetChangeSet(products);
var productCategoryChangeSet = GetChangeSet(productCategories);
// reduce entities (copy changed values)
var productsMap = ReduceToModifications(productChangeSet);
var productCategoriesMap = ReduceToModifications(productCategoryChangeSet);
// fixup relations (replaces related entities with reduced entites)
FixupRelations(
CastToEntityTuple(productsMap),
CastToEntityTuple(productCategoriesMap)
);
var changeSet = new ProductManagerChangeSet();
if (productsMap.Count > 0)
{
changeSet.Products = productsMap.Select(e => e.ReducedEntity).ToList();
}
if (productCategoriesMap.Count > 0)
{
changeSet.ProductCategories = productCategoriesMap.Select(e => e.ReducedEntity).ToList();
}
return(changeSet);
}
public ProductManagerResultSet SubmitChanges(ClientInfo clientInfo, ProductManagerChangeSet changeSet)
{
var resultSet = new ProductManagerResultSet(changeSet);
using (var transactionScope = CreateSavingTransactionScope())
{
using (var dataRepository = _repositoryFactory(clientInfo))
{
// optional custom processing
PreProcessing(clientInfo, ref changeSet, dataRepository);
// apply chnages to repository
ApplyChanges(dataRepository, dataRepository.Products, changeSet, changeSet.Products, clientInfo);
ApplyChanges(dataRepository, dataRepository.ProductCategories, changeSet, changeSet.ProductCategories, clientInfo);
// optional custom processing
BeforeSaving(clientInfo, ref changeSet, dataRepository);
// save changes
SaveChanges(dataRepository, changeSet, resultSet);
// optional custom processing
PostProcessing(clientInfo, ref resultSet, dataRepository);
}
transactionScope.Complete();
}
return(resultSet);
}
partial void BeforeSaving(ClientInfo clientInfo, ref ProductManagerChangeSet changeSet, IProductManagerRepository repository);
partial void PreProcessing(ClientInfo clientInfo, ref ProductManagerChangeSet changeSet, IProductManagerRepository repository);