protected override ServiceResult Write(uint attributeId, object value)
{
switch (attributeId)
{
case Attributes.AccessLevel: { m_accessLevel = (byte)value; return ServiceResult.Good; }
case Attributes.UserAccessLevel: { m_userAccessLevel = (byte)value; return ServiceResult.Good; }
case Attributes.MinimumSamplingInterval: { m_minimumSamplingInterval = (int)value; return ServiceResult.Good; }
case Attributes.Historizing: { m_historizing = (bool)value; return ServiceResult.Good; }
// values are copied when the are written so then can be safely returned on read.
case Attributes.Value:
{
m_value.Value = Utils.Clone(value);
return ServiceResult.Good;
}
case Attributes.DataType:
{
NodeId dataType = (NodeId)value;
// must ensure the value is of the correct datatype.
if (dataType != m_dataType)
{
m_value.Value = TypeInfo.GetDefaultValue(dataType, m_valueRank);
}
m_dataType = dataType;
return ServiceResult.Good;
}
case Attributes.ValueRank:
{
int valueRank = (int)value;
if (valueRank != m_valueRank)
{
m_value.Value = TypeInfo.GetDefaultValue(m_dataType, valueRank);
}
m_valueRank = valueRank;
return ServiceResult.Good;
}
case Attributes.ArrayDimensions:
{
m_arrayDimensions = new UInt32Collection((uint[])value);
// ensure number of dimensions is correct.
if (m_arrayDimensions.Count > 0)
{
if (m_arrayDimensions.Count != m_valueRank)
{
m_valueRank = m_arrayDimensions.Count;
m_value.Value = TypeInfo.GetDefaultValue(m_dataType, m_valueRank);
}
}
return ServiceResult.Good;
}
}
return base.Write(attributeId, value);
}
#endregion
