private static SPListQueryCachedData GetListQueryCachedData(SPList list, string viewXml)
{
SPListQueryCachedData listQueryCachedData = GetListQueryCachedData(list);
if (!string.IsNullOrEmpty(viewXml))
{
listQueryCachedData.Add(Guid.NewGuid().ToString(), viewXml);
}
return(listQueryCachedData);
}
private static bool HasListChanged(SPList list, SPListQueryCachedData listQueryCachedData)
{
DateTime lastItemModifiedDate = list.LastItemModifiedDate;
if (list.LastItemDeletedDate > lastItemModifiedDate)
{
lastItemModifiedDate = list.LastItemDeletedDate;
}
return(listQueryCachedData.LastItemModifiedDate != lastItemModifiedDate ||
listQueryCachedData.ItemCount != list.ItemCount);
}
private static bool HasListChanged(SPList list, SPListQueryCachedData listQueryCachedData)
{
DateTime lastItemModifiedDate = list.LastItemModifiedDate;
if (list.LastItemDeletedDate > lastItemModifiedDate)
{
lastItemModifiedDate = list.LastItemDeletedDate;
}
return listQueryCachedData.LastItemModifiedDate != lastItemModifiedDate ||
listQueryCachedData.ItemCount != list.ItemCount;
}
private DataTable GetData(SPList list, SPQuery query)
{
if (string.IsNullOrEmpty(query.ViewFields))
{
throw new ArgumentException("The ViewFields property for SPQuery hasn't been set.");
}
string viewXml = XElement.Parse(query.ViewXml, LoadOptions.None).ToString(SaveOptions.DisableFormatting);
ICachedObject <SPListQueryCachedData> queryCache =
SPCache.Cache(() => GetListQueryCachedData(list, viewXml))
.By(list.ID.ToString(),
list.ParentWeb.ID.ToString(),
list.ParentWeb.Site.ID.ToString(),
list.ParentWeb.CurrentUser.Sid);
if (CacheTime != default(TimeSpan))
{
queryCache.ForSliding(CacheTime);
}
SPListQueryCachedData listQueryCachedData = queryCache.CachedObject;
string keyQuery;
if (HasListChanged(list, listQueryCachedData))
{
listQueryCachedData.Clear();
listQueryCachedData = GetListQueryCachedData(list);
keyQuery = Guid.NewGuid().ToString();
listQueryCachedData.Add(keyQuery, viewXml);
queryCache.CachedObject = listQueryCachedData;
queryCache.Update();
}
else
{
keyQuery = listQueryCachedData.FindKey(viewXml);
}
ICachedObject <DataTable> dataCache = listQueryCachedData.GetDataCache(keyQuery, () => LoadDataTable(list, query));
if (CacheTime != default(TimeSpan))
{
dataCache.ForSliding(CacheTime);
}
return(dataCache.CachedObject);
}
private static SPListQueryCachedData GetListQueryCachedData(SPList list)
{
SPListQueryCachedData listQueryCachedData = new SPListQueryCachedData(list.ParentWeb.Site.ID, list.ParentWeb.ID, list.ID, list.ParentWeb.CurrentUser.Sid);
DateTime lastModifiedDate = list.LastItemModifiedDate;
if (list.LastItemDeletedDate > lastModifiedDate)
{
lastModifiedDate = list.LastItemDeletedDate;
}
listQueryCachedData.LastItemModifiedDate = lastModifiedDate;
listQueryCachedData.ItemCount = list.ItemCount;
return(listQueryCachedData);
}
private static SPListQueryCachedData GetListQueryCachedData(SPList list)
{
SPListQueryCachedData listQueryCachedData = new SPListQueryCachedData(list.ParentWeb.Site.ID, list.ParentWeb.ID, list.ID, list.ParentWeb.CurrentUser.Sid);
DateTime lastModifiedDate = list.LastItemModifiedDate;
if (list.LastItemDeletedDate > lastModifiedDate)
{
lastModifiedDate = list.LastItemDeletedDate;
}
listQueryCachedData.LastItemModifiedDate = lastModifiedDate;
listQueryCachedData.ItemCount = list.ItemCount;
return listQueryCachedData;
}
