/// <summary> Adds the entire collection hierarchy under the ALL aggregation object </summary>
/// <param name="Tracer">Trace object keeps a list of each method executed and important milestones in rendering </param>
/// <returns> TRUE if successful, otherwise FALSE </returns>
/// <remarks> This is postponed until it is needed for the TREE VIEW on the home page, to allow the system to start
/// faster, even with a great number of item aggregationPermissions in the hierarchy </remarks>
public static Aggregation_Hierarchy Get_Collection_Hierarchy(Custom_Tracer Tracer)
{
if (Tracer != null)
Tracer.Add_Trace("Item_Aggregation_Utilities.Get_Collection_Hierarchy", "Preparing to create the aggregation hierarchy object");
// Get the database table
DataSet childInfo = Engine_Database.Get_Aggregation_Hierarchies(Tracer);
if (childInfo == null)
{
if (Tracer != null)
Tracer.Add_Trace("Item_Aggregation_Utilities.Get_Collection_Hierarchy", "NULL value returned from database lookup");
return null;
}
// Build the return value
Aggregation_Hierarchy returnValue = new Aggregation_Hierarchy();
// Add all the collections
if (Tracer != null)
Tracer.Add_Trace("Item_Aggregation_Utilities.Get_Collection_Hierarchy", "Add all the child aggregations to the hierarchy");
add_hierarchy_children(returnValue.Collections, childInfo.Tables[0]);
// Add all the institutions
if (Tracer != null)
Tracer.Add_Trace("Item_Aggregation_Utilities.Get_Collection_Hierarchy", "Add all the institutions to the hierarchy");
add_hierarchy_children(returnValue.Institutions, childInfo.Tables[1]);
return returnValue;
}
/// <summary> Stores the item aggregation hierarchy to the cache </summary>
/// <param name="StoreObject"> Item aggregation object to store for later retrieval </param>
/// <param name="Tracer"> Trace object keeps a list of each method executed and important milestones in rendering</param>
public void Store_Aggregation_Hierarchy(Aggregation_Hierarchy StoreObject, Custom_Tracer Tracer)
{
if (Tracer != null)
{
Tracer.Add_Trace("CachedDataManager.Store_Aggregation_Hierarchy", "Entering Store_Item_Aggregation method");
}
// If the cache is disabled, just return before even tracing
if (settings.Disabled)
{
if (Tracer != null) Tracer.Add_Trace("CachedDataManager.Store_Aggregation_Hierarchy", "Caching is disabled");
return;
}
// Determine the key
const string KEY = "AGGR_HIERARCHY";
const int LOCAL_EXPIRATION = 15;
// Locally cache if this doesn't exceed the limit
if (Tracer != null)
{
Tracer.Add_Trace("CachedDataManager.Store_Aggregation_Hierarchy", "Adding object '" + KEY + "' to the local cache with expiration of " + LOCAL_EXPIRATION + " minute(s)");
}
HttpContext.Current.Cache.Insert(KEY, StoreObject, null, Cache.NoAbsoluteExpiration, TimeSpan.FromMinutes(LOCAL_EXPIRATION));
}
