public static List <T> RetrieveList <T>(List <PrimaryKey> ids)
where T : Entity
{
using (HeavyProfiler.Log("DBRetrieve", () => "List<{0}>".FormatWith(typeof(T).TypeName())))
{
if (ids == null)
{
throw new ArgumentNullException("ids");
}
List <PrimaryKey> remainingIds;
Dictionary <PrimaryKey, T> result = null;
if (EntityCache.Created)
{
result = ids.Select(id => EntityCache.Get <T>(id)).NotNull().ToDictionary(a => a.Id);
if (result.Count == 0)
{
remainingIds = ids;
}
else
{
remainingIds = ids.Where(id => !result.ContainsKey(id)).ToList();
}
}
else
{
remainingIds = ids;
}
if (remainingIds.Count > 0)
{
var retrieved = RetrieveFromDatabaseOrCache <T>(remainingIds).ToDictionary(a => a.Id);
var missing = ids.Except(retrieved.Keys);
if (missing.Any())
{
throw new EntityNotFoundException(typeof(T), missing.ToArray());
}
if (result == null)
{
result = retrieved;
}
else
{
result.AddRange(retrieved);
}
}
else
{
if (result == null)
{
result = new Dictionary <PrimaryKey, T>();
}
}
return(ids.Select(id => result[id]).ToList()); //Preserve order
}
}
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 alternateEntity = Schema.Current.OnAlternativeRetriving(typeof(T), id);
if (alternateEntity != null)
{
return((T)alternateEntity);
}
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);
}
}
T retrieved = Database.Query <T>().SingleOrDefaultEx(a => a.Id == id);
if (retrieved == null)
{
throw new EntityNotFoundException(typeof(T), id);
}
return(retrieved);
}
}
