Table 43 defines the SortRuleElement structure. This structure is used by the ReadEventDetailsSorted Structure DataType defined in 6.5.2.5. It is used to define the order in which events are returned from the Server.
Table 43 – SortRuleElement Structure
|
Name |
Type |
Description |
|
SortRuleElement |
Structure |
Sorting rule definition that shall be applied to the filtered records. |
|
sortOrder |
SortOrderType |
Defines ascending or descending sort of the field. Null values are ordered first before other values when using ascending order and last when using descending order. |
|
eventField |
SimpleAttributeOperand |
Specifies the event fields on which the filtered results shall be sorted. Valid fields shall be in the SortByEventFields Property of HistoricalEventConfigurationType defined in 5.4.3. |
Its representation in the AddressSpace is defined in Table 44.
Table 44 – SortRuleElement definition
|
Attribute |
Value |
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|
BrowseName |
SortRuleElement |
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|
IsAbstract |
False |
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|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Other |
|
|
Subtype of Structure defined in OPC 10000-3 |
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|
Conformance Units |
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