public NTierDemoResultSet SubmitChanges(ClientInfo clientInfo, NTierDemoChangeSet changeSet)
{
var resultSet = new NTierDemoResultSet(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.Users, changeSet, changeSet.Users, clientInfo);
ApplyChanges(dataRepository, dataRepository.Blogs, changeSet, changeSet.Blogs, clientInfo);
ApplyChanges(dataRepository, dataRepository.Posts, changeSet, changeSet.Posts, 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);
}
public NTierDemoChangeSet CreateChangeSet(IEnumerable <User> users, IEnumerable <Blog> blogs, IEnumerable <Post> posts)
{
// retrieve changes sets (modified entities)
var userChangeSet = GetChangeSet(users);
var blogChangeSet = GetChangeSet(blogs);
var postChangeSet = GetChangeSet(posts);
// reduce entities (copy changed values)
var usersMap = ReduceToModifications(userChangeSet);
var blogsMap = ReduceToModifications(blogChangeSet);
var postsMap = ReduceToModifications(postChangeSet);
// fixup relations (replaces related entities with reduced entites)
FixupRelations(
CastToEntityTuple(usersMap),
CastToEntityTuple(blogsMap),
CastToEntityTuple(postsMap)
);
var changeSet = new NTierDemoChangeSet();
if (usersMap.Count > 0)
{
changeSet.Users = usersMap.Select(e => e.ReducedEntity).ToList();
}
if (blogsMap.Count > 0)
{
changeSet.Blogs = blogsMap.Select(e => e.ReducedEntity).ToList();
}
if (postsMap.Count > 0)
{
changeSet.Posts = postsMap.Select(e => e.ReducedEntity).ToList();
}
return(changeSet);
}
partial void BeforeSaving(ClientInfo clientInfo, ref NTierDemoChangeSet changeSet, INTierDemoRepository repository);
partial void PreProcessing(ClientInfo clientInfo, ref NTierDemoChangeSet changeSet, INTierDemoRepository repository);