/// <summary>
/// Unmarshals and deallocates an OPCHDA_MODIFIEDITEM structure.
/// </summary>
internal static TsCHdaModifiedValueCollection GetModifiedValueCollection(OpcRcw.Hda.OPCHDA_MODIFIEDITEM input, bool deallocate)
{
TsCHdaModifiedValueCollection output = new TsCHdaModifiedValueCollection();
output.ClientHandle = input.hClient;
object[] values = Com.Interop.GetVARIANTs(ref input.pvDataValues, input.dwCount, deallocate);
DateTime[] timestamps = Utilities.Interop.GetDateTimes(ref input.pftTimeStamps, input.dwCount, deallocate);
int[] qualities = Utilities.Interop.GetInt32s(ref input.pdwQualities, input.dwCount, deallocate);
DateTime[] modificationTimes = Utilities.Interop.GetDateTimes(ref input.pftModificationTime, input.dwCount, deallocate);
int[] editTypes = Utilities.Interop.GetInt32s(ref input.pEditType, input.dwCount, deallocate);
string[] users = Utilities.Interop.GetUnicodeStrings(ref input.szUser, input.dwCount, deallocate);
for (int ii = 0; ii < input.dwCount; ii++)
{
TsCHdaModifiedValue value = new TsCHdaModifiedValue();
value.Value = values[ii];
value.Timestamp = timestamps[ii];
value.Quality = new TsCDaQuality((short)(qualities[ii] & 0x0000FFFF));
value.HistorianQuality = (TsCHdaQuality)((int)(qualities[ii] & 0xFFFF0000));
value.ModificationTime = modificationTimes[ii];
value.EditType = (TsCHdaEditType)editTypes[ii];
value.User = users[ii];
output.Add(value);
}
return(output);
}
/// <summary>
/// Unmarshals and deallocates an array of OPCHDA_MODIFIEDITEM structures.
/// </summary>
internal static TsCHdaModifiedValueCollection[] GetModifiedValueCollections(ref IntPtr pInput, int count, bool deallocate)
{
TsCHdaModifiedValueCollection[] output = null;
if (pInput != IntPtr.Zero && count > 0)
{
output = new TsCHdaModifiedValueCollection[count];
IntPtr pos = pInput;
for (int ii = 0; ii < count; ii++)
{
output[ii] = GetModifiedValueCollection(pos, deallocate);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Hda.OPCHDA_MODIFIEDITEM)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(pInput);
pInput = IntPtr.Zero;
}
}
return(output);
}
/// <summary>
/// Unmarshals and deallocates an OPCHDA_MODIFIEDITEM structure.
/// </summary>
internal static TsCHdaModifiedValueCollection GetModifiedValueCollection(IntPtr pInput, bool deallocate)
{
TsCHdaModifiedValueCollection output = null;
if (pInput != IntPtr.Zero)
{
object item = Marshal.PtrToStructure(pInput, typeof(OpcRcw.Hda.OPCHDA_MODIFIEDITEM));
output = GetModifiedValueCollection((OpcRcw.Hda.OPCHDA_MODIFIEDITEM)item, deallocate);
if (deallocate)
{
Marshal.DestroyStructure(pInput, typeof(OpcRcw.Hda.OPCHDA_MODIFIEDITEM));
}
}
return(output);
}
/// <summary>
/// Called when an asynchronous read modified request completes.
/// </summary>
public void OnReadModifiedComplete(
int dwTransactionID,
int hrStatus,
int dwNumItems,
OPCHDA_MODIFIEDITEM[] pItemValues,
int[] phrErrors)
{
try
{
lock (this)
{
// lookup request transaction.
Request request = (Request)m_requests[dwTransactionID];
if (request == null)
{
return;
}
// unmarshal results.
TsCHdaModifiedValueCollection[] results = new TsCHdaModifiedValueCollection[pItemValues.Length];
for (int ii = 0; ii < pItemValues.Length; ii++)
{
results[ii] = Interop.GetModifiedValueCollection(pItemValues[ii], false);
results[ii].ServerHandle = pItemValues[ii].hClient;
results[ii].Result = Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(phrErrors[ii]);
}
// invoke callback - remove request if all results arrived.
if (request.InvokeCallback(results))
{
m_requests.Remove(request.RequestID);
}
}
}
catch (Exception exception)
{
HandleException(dwTransactionID, exception);
}
}
