/// <summary>
/// Adds the context entities from headers.
/// </summary>
protected virtual void AddContextEntitiesFromHeaders()
{
foreach (var kvp in Headers)
{
//
// Skip any header that isn't an entity context header.
//
if (!kvp.Key.StartsWith("X-ENTITYCONTEXT-", StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
//
// Determine the the entity type in question.
//
var entityName = kvp.Key.Substring(16);
var type = EntityTypeCache.All()
.Where(a => a.IsEntity)
.FirstOrDefault(a => a.FriendlyName.Equals(entityName, StringComparison.InvariantCultureIgnoreCase))
?.GetEntityType();
string entityKey = kvp.Value.First();
//
// If we got an unknown type or no Id/Guid then skip.
//
if (type == null || entityKey.IsNullOrWhiteSpace())
{
continue;
}
//
// Lazy load the entity so we don't actually load if it is never
// accessed.
//
ContextEntities.AddOrReplace(type, new Lazy <IEntity>(() =>
{
IEntity entity = null;
if (int.TryParse(entityKey, out int entityId))
{
entity = Reflection.GetIEntityForEntityType(type, entityId);
}
else if (Guid.TryParse(entityKey, out Guid entityGuid))
{
entity = Reflection.GetIEntityForEntityType(type, entityGuid);
}
if (entity != null && entity is IHasAttributes attributedEntity)
{
Helper.LoadAttributes(attributedEntity);
}
return(entity);
}));
}
}
/// <summary>
/// Adds the context entities for page.
/// </summary>
/// <param name="pageCache">The page cache.</param>
internal virtual void AddContextEntitiesForPage(PageCache pageCache)
{
foreach (var pageContext in pageCache.PageContexts)
{
var entityType = EntityTypeCache.Get(pageContext.Key)?.GetEntityType();
if (entityType == null)
{
continue;
}
int?contextId = GetPageParameter(pageContext.Value).AsIntegerOrNull();
if (contextId.HasValue)
{
ContextEntities.AddOrReplace(entityType, new Lazy <IEntity>(() =>
{
var entity = Reflection.GetIEntityForEntityType(entityType, contextId.Value);
if (entity != null && entity is IHasAttributes attributedEntity)
{
Helper.LoadAttributes(attributedEntity);
}
return(entity);
}));
}
Guid?contextGuid = GetPageParameter(pageContext.Value).AsGuidOrNull();
if (contextGuid.HasValue)
{
ContextEntities.AddOrReplace(entityType, new Lazy <IEntity>(() =>
{
var entity = Reflection.GetIEntityForEntityType(entityType, contextGuid.Value);
if (entity != null && entity is IHasAttributes attributedEntity)
{
Helper.LoadAttributes(attributedEntity);
}
return(entity);
}));
}
}
}