This method inserts or replaces values and qualities in the history database for the specified timestamps for one or more items. If the item has a value at the specified timestamp, the new value and quality will replace the old one. If there is no value at that timestamp, the method will insert the new data. The method runs to completion before returning. This method is intended to unconditionally insert/replace values and qualities; e.g., correction of values for bad sensors. The serverHnd, timeStamps, dataValues and qualities are arrays of equal size. To set values and qualities for a number of different items at a single time, then ftTimeStamp array would have the same time for each item. To set a stream of values, timestamps and qualities for a single item, set the size of the item array to the number of values to be inserted/replaced and put the same ItemID in each element. S_OK as a errors return code for an individual value is allowed when the HDA server is unable to say whether there was already a value at that timestamp. If the HDA server can determine whether the new value replaces a value that was already there, it should use OPC_S_INSERTED or OPC_S_REPLACED to return that information.
Syntax
| Visual Basic (Declaration) | |
|---|---|
Overloads Function UpdateInsertReplace( _ ByVal transactionID As Integer, _ ByVal serverHnd() As Integer, _ ByVal timeStamps() As Date, _ ByVal dataValues() As Object, _ ByVal qualities() As Integer, _ ByRef cancelID As Integer, _ ByRef errors As Integer() _ ) As Integer | |
| C# | |
|---|---|
int UpdateInsertReplace( int transactionID, int[] serverHnd, DateTime[] timeStamps, object[] dataValues, int[] qualities, out int cancelID, out int[] errors ) | |
Parameters
- transactionID
- An identifier created by the client and passed to the server in this call. The server shall return this identifier along with the results of this call.
- serverHnd
- The list of server item handles for the items to be edited.
- timeStamps
- Array of the time stamps for the new values.
- dataValues
- Array of objects which contain the new item values.
- qualities
- Array of the quality flags of the new values. These are the Data Access Quality flags, not the HDA quality flags.
- cancelID
- Place to return a Server generated ID to be used in case the operation needs to be canceled.
- errors
- Array of HRESULTs indicating whether the corresponding server handle was valid.
Return Value
HRESULTS success/error code.Requirements
Target Platforms: Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows 7, Windows Server 2008 family