public static T Retrieve <T>(PrimaryKey id) where T : Entity
{
using (HeavyProfiler.Log("DBRetrieve", () => typeof(T).TypeName()))
{
if (EntityCache.Created)
{
T cached = EntityCache.Get <T>(id);
if (cached != null)
{
return(cached);
}
}
var cc = GetCacheController <T>();
if (cc != null)
{
var filter = GetFilterQuery <T>();
if (filter == null || filter.InMemoryFunction != null)
{
T result;
using (new EntityCache())
using (var r = EntityCache.NewRetriever())
{
result = r.Request <T>(id);
}
if (filter != null && !filter.InMemoryFunction(result))
{
throw new EntityNotFoundException(typeof(T), id);
}
return(result);
}
}
var retrieved = Database.Query <T>().SingleOrDefaultEx(a => a.Id == id);
if (retrieved == null)
{
throw new EntityNotFoundException(typeof(T), id);
}
return(retrieved);
}
}
public static List <T> RetrieveAll <T>()
where T : Entity
{
try
{
using (HeavyProfiler.Log("DBRetrieve", () => "All {0}".FormatWith(typeof(T).TypeName())))
{
var cc = GetCacheController <T>();
if (cc != null)
{
var filter = GetFilterQuery <T>();
if (filter == null || filter.InMemoryFunction != null)
{
List <T> result;
using (new EntityCache())
using (var r = EntityCache.NewRetriever())
{
result = cc.GetAllIds().Select(id => r.Request <T>(id)).ToList();
}
if (filter != null)
{
result = result.Where(filter.InMemoryFunction).ToList();
}
return(result);
}
}
return(Database.Query <T>().ToList());
}
}
catch (Exception e)
{
e.Data["type"] = typeof(T).TypeName();
throw;
}
}
public T Complete <T>(PrimaryKey?id, Action <T> complete) where T : Entity
{
if (id == null)
{
return(null);
}
IdentityTuple tuple = new IdentityTuple(typeof(T), id.Value);
Entity result;
if (entityCache.TryGetValue(tuple, out result))
{
return((T)result);
}
if (retrieved.TryGetValue(tuple, out result))
{
return((T)result);
}
T entity;
if (TryGetRequest(tuple, out result))
{
entity = (T)result;
requests[typeof(T)].Remove(id.Value);
}
else
{
entity = EntityCache.Construct <T>(id.Value);
}
retrieved.Add(tuple, entity);
complete(entity);
return(entity);
}
public T Request <T>(PrimaryKey?id) where T : Entity
{
if (id == null)
{
return(null);
}
IdentityTuple tuple = new IdentityTuple(typeof(T), id.Value);
Entity ident;
if (entityCache.TryGetValue(tuple, out ident))
{
return((T)ident);
}
if (retrieved.TryGetValue(tuple, out ident))
{
return((T)ident);
}
ident = (T)requests?.TryGetC(typeof(T))?.TryGetC(id.Value);
if (ident != null)
{
return((T)ident);
}
T entity = EntityCache.Construct <T>(id.Value);
if (requests == null)
{
requests = new Dictionary <Type, Dictionary <PrimaryKey, Entity> >();
}
requests.GetOrCreate(tuple.Type).Add(tuple.Id, entity);
return(entity);
}
public static void Save(Entity[] entities)
{
if (entities == null || entities.Any(e => e == null))
{
throw new ArgumentNullException("entity");
}
using (var log = HeavyProfiler.LogNoStackTrace("PreSaving"))
{
Schema schema = Schema.Current;
DirectedGraph <Modifiable> modifiables = PreSaving(() => GraphExplorer.FromRoots(entities));
HashSet <Entity> wasNew = modifiables.OfType <Entity>().Where(a => a.IsNew).ToHashSet(ReferenceEqualityComparer <Entity> .Default);
HashSet <Entity> wasSelfModified = modifiables.OfType <Entity>().Where(a => a.Modified == ModifiedState.SelfModified).ToHashSet(ReferenceEqualityComparer <Entity> .Default);
log.Switch("Integrity");
var error = GraphExplorer.FullIntegrityCheck(modifiables);
if (error != null)
{
#if DEBUG
throw new IntegrityCheckException(error.WithEntities(modifiables));
#else
throw new IntegrityCheckException(error);
#endif
}
log.Switch("Graph");
GraphExplorer.PropagateModifications(modifiables.Inverse());
//colapsa modifiables (collections and embeddeds) keeping indentifiables only
DirectedGraph <Entity> identifiables = GraphExplorer.ColapseIdentifiables(modifiables);
foreach (var node in identifiables)
{
schema.OnSaving(node);
}
//Remove all the edges that doesn't mean a dependency
identifiables.RemoveEdges(identifiables.Edges.Where(e => !e.To.IsNew).ToList());
//Remove all the nodes that are not modified
List <Entity> notModified = identifiables.Where(node => !node.IsGraphModified).ToList();
notModified.ForEach(node => identifiables.RemoveFullNode(node, None));
log.Switch("SaveGroups");
SaveGraph(schema, identifiables);
foreach (var node in identifiables)
{
schema.OnSaved(node, new SavedEventArgs
{
IsRoot = entities.Contains(node),
WasNew = wasNew.Contains(node),
WasSelfModified = wasSelfModified.Contains(node),
});
}
EntityCache.Add(identifiables);
EntityCache.Add(notModified);
GraphExplorer.CleanModifications(modifiables);
}
}
public void Dispose()
{
EntityCache.ReleaseRetriever(this);
}
