/// <summary>
/// Execute list logic on a pair of persisted list objects & store results in current list for user
/// </summary>
/// <param name="list1InternalName"></param>
/// <param name="list2InternalName"></param>
/// <param name="op"></param>
/// <returns>Number of results from logic operation</returns>
public static int ExecuteListLogic(
string list1InternalName,
string list2InternalName,
ListLogicType op)
{
CidList list1 = Read(list1InternalName);
if (list1 == null)
{
throw new Exception("List not found: " + list1InternalName);
}
CidList list2 = Read(list2InternalName);
if (list2 == null)
{
throw new Exception("List not found: " + list2InternalName);
}
list1.ApplyListLogic(list2, op);
CidListDao.Write(list1, "Current"); // write new current list
return(list1.Count);
}