internal IEnumerable <T> TryGetCachedModel <T>(ISPListItemAdapter source, string fieldName, params int[] lookupIds)
{
List <T> collection = new List <T>();
SPObjectCache cache = this.Manager.ObjectCache;
SPFieldLookup lookupField = cache.GetField(source.WebId, source.ListId, fieldName) as SPFieldLookup;
if (lookupField != null)
{
if (hashtable == null)
{
hashtable = new Hashtable();
}
Guid listId = lookupField.LookupList == "Self" ? source.ListId : new Guid(lookupField.LookupList);
List <int> lookupIdsToQuery = new List <int>();
foreach (int id in lookupIds)
{
LookupKey key = new LookupKey(listId, id);
if (hashtable.ContainsKey(key))
{
object cachedItem = hashtable[key];
if (cachedItem is T)
{
collection.Add((T)cachedItem);
}
}
else
{
lookupIdsToQuery.Add(id);
}
}
if (lookupIdsToQuery.Count > 0)
{
ISPModelManagerInternal manager = hashtable.EnsureKeyValue(typeof(T), () => (ISPModelManagerInternal)SPModel.GetDefaultManager(typeof(T), this.manager.Site.RootWeb, cache));
SPList list = cache.GetList(lookupField.LookupWebId, listId);
SPQuery query = new SPQuery {
Query = Caml.EqualsAny(SPBuiltInFieldName.ID, lookupIdsToQuery).ToString()
};
foreach (SPListItem item in list.GetItems(query))
{
object model = manager.TryCreateModel(new SPListItemAdapter(item, cache), false);
hashtable[new LookupKey(listId, item.ID)] = model;
if (model is T)
{
collection.Add((T)model);
}
cache.AddListItem(item);
}
}
}
return(collection);
}
public SPModelUsage EnsureList(SPObjectCache objectCache)
{
CommonHelper.ConfirmNotNull(objectCache, "objectCache");
if (this.List != null || this.ListId == Guid.Empty)
{
return(this);
}
try {
using (new SPSecurity.SuppressAccessDeniedRedirectInScope()) {
SPList list = objectCache.GetList(this.WebId, this.ListId);
if (list != null)
{
return(new SPModelUsage(list, this.ContentTypeId, true));
}
}
} catch { }
return(this);
}