OPC Unified Architecture – Part 11: Historical Access
6.5.2.5 ReadEventDetailsSorted structure details
Table 33 defines the ReadEventDetailsSorted structure. The structure is a subtype of the ReadEventDetailsStructure defined in 6.5.2, adding a SortClause used to define the order inwhich events will be returned by the Server. The Server shall use the SortClause to determine how the filtered rows shall be sorted before the results are returned.
Table 33 – ReadEventDetailsSorted Structure
Name
Type
Description
ReadEventDetailsSorted
Structure
Specifies the details used to perform an Event history read.
SortClause
SortRuleElement[]
Sorting rules for the filtered notification that match the EventFilter. The priority of the ordering is evaluated by using the position of the elements in this array, starting with the first element.
Its representation in the AddressSpace is defined in Table 34.