} // end QueryProperties
/// <summary>
/// Changes value cache value of this element instance
/// </summary>
/// <param name="aNewValue"></param>
/// <returns>
/// E_INVALIDARG - Invalid valueQT was passed
/// S_OK - Value changed
/// OTS_E_EXCEPTION - Unexpected error occurred
/// </returns>
/// <include
/// file='TBNS.doc.xml'
/// path='//class[@name="DaAddressSpaceElement"]/
/// method[@name="ValueChanged"]/doc/*'
/// />
public virtual int ValueChanged(ValueQT aNewValue)
{
if (this.ObjectHandle == 0)
{
return (int) EnumResultCode.E_FAIL;
} // end if
OTValueData valueData = new OTValueData();
valueData.m_quality = (ushort) aNewValue.Quality;
valueData.m_timestamp = new OTDateTime(aNewValue.TimeStamp);
valueData.m_value = Marshal.AllocCoTaskMem(ValueQT.VARIANT_SIZE);
Marshal.GetNativeVariantForObject(aNewValue.Data, valueData.m_value);
int result = OTBFunctions.OTSValuesChanged(1, new uint[1] {ObjectHandle}, new OTValueData[1] {valueData});
OTBFunctions.OTVariantClear(valueData.m_value);
Marshal.FreeCoTaskMem(valueData.m_value);
return result;
} // end ValueChanged
} // end QueryAddressSpaceElementChildren
/// <summary>
/// Changes the cache value for the Address space elements provided
/// </summary>
/// <param name="anElementList">the namespace elements</param>
/// <param name="aValueList">the corresponding values</param>
/// <returns>
/// E_INVALIDARG - Invalid valueQT was passed
/// S_OK - Value changed
/// OTS_E_EXCEPTION - Unexpected error occurred
/// </returns>
/// <include
/// file='TBNS.doc.xml'
/// path='//class[@name="DaAddressSpaceRoot"]/
/// method[@name="ValuesChanged.array"]/doc/*'
/// />
public int ValuesChanged(DaAddressSpaceElement[] anElementList, ValueQT[] aValueList)
{
if (anElementList.Length != aValueList.Length)
{
return (int) EnumResultCode.E_INVALIDARG;
} // end if
int count = anElementList.Length;
if (count == 0)
{
return (int) EnumResultCode.S_FALSE;
} // end if
OTValueData[] aoValues = new OTValueData[count];
uint[] ahObjects = new uint[count];
for (int i = 0; i < count; i++)
{
ahObjects[i] = anElementList[i].ObjectHandle;
aoValues[i] = new OTValueData();
aoValues[i].m_quality = (ushort) aValueList[i].Quality;
aoValues[i].m_timestamp = new OTDateTime(aValueList[i].TimeStamp);
aoValues[i].m_value = Marshal.AllocCoTaskMem(ValueQT.VARIANT_SIZE);
Marshal.GetNativeVariantForObject(aValueList[i].Data, aoValues[i].m_value);
} // end for
int result = OTBFunctions.OTSValuesChanged(count, ahObjects, aoValues);
for (int i = 0; i < count; i++)
{
OTBFunctions.OTVariantClear(aoValues[i].m_value);
Marshal.FreeCoTaskMem(aoValues[i].m_value);
} // end for
return result;
} // end ValuesChanged
} // end CompleteRequest
/// <summary>
/// Changes the cache value for the Address space elements provided
/// </summary>
/// <returns>
/// E_INVALIDARG - Invalid valueQT was passed
/// S_OK - Value changed
/// OTS_E_EXCEPTION - Unexpected error occurred
/// The Result should be checked with ResultCode.SUCCEEDED
/// or with ResultCode.FAILED
/// </returns>
/// <include
/// file='TBNS.doc.xml'
/// path='//class[@name="DaTransaction"]/
/// method[@name="ValuesChanged"]/doc/*'
/// />
public int ValuesChanged()
{
int result;
int count = 0;
OTValueData[] values = null;
uint[] handles = null;
try
{
lock (m_requestListJanitor)
{
count = m_requestList.Count;
values = new OTValueData[count];
handles = new uint[count];
for (int i = 0; i < count; i++)
{
OTValueData valueData = new OTValueData();
DaRequest request = m_requestList[i] as DaRequest;
if (request != null)
{
valueData.m_quality = (ushort) request.Value.Quality;
valueData.m_timestamp = new OTDateTime(request.Value.TimeStamp);
valueData.m_value = Marshal.AllocCoTaskMem(ValueQT.VARIANT_SIZE);
Marshal.GetNativeVariantForObject(request.Value.Data, valueData.m_value);
handles[i] = request.AddressSpaceElement.ObjectHandle;
request.Result = EnumResultCode.S_OK;
}
else
{
valueData.m_quality = (ushort) EnumQuality.BAD;
valueData.m_value = Marshal.AllocCoTaskMem(ValueQT.VARIANT_SIZE);
Marshal.GetNativeVariantForObject(null, valueData.m_value);
handles[i] = 0;
} // end if ... else
values[i] = valueData;
} // end for
result = OTBFunctions.OTSValuesChanged(count, handles, values);
} // end lock
}
catch (Exception e)
{
Application.Instance.Trace(
EnumTraceLevel.ERR, EnumTraceGroup.OPCSERVER,
"DaTransaction.ValuesChanged", "Exception caught: " + e.ToString());
result = (int) EnumResultCode.E_FAIL;
}
finally
{
for (int i = 0; i < count; i++)
{
OTBFunctions.OTVariantClear(values[i].m_value);
Marshal.FreeCoTaskMem(values[i].m_value);
} // end for
} // end try ... catch ... finally
return result;
} // end ValuesChanged