|
public GetAttributeValue ( |
||
| context | The context to use when evaluating the operand. | |
| typeDefinitionId | Opc.Ua.NodeId | The type of the instance. |
| relativePath | IList |
The path from the instance to the node which defines the attribute. |
| attributeId | uint | The attribute to return. |
| indexRange | The sub-set of an array value to return. | |
| return | object | |
public object GetAttributeValue(
FilterContext context,
NodeId typeDefinitionId,
IList<QualifiedName> relativePath,
uint attributeId,
NumericRange indexRange)
{
if (!NodeId.IsNull(typeDefinitionId))
{
if (!context.TypeTree.IsTypeOf(m_typeDefinitionId, typeDefinitionId))
{
return null;
}
}
object value = GetAttributeValue(
m_snapshot,
relativePath,
0,
attributeId);
if (indexRange != NumericRange.Empty)
{
StatusCode error = indexRange.ApplyRange(ref value);
if (StatusCode.IsBad(error))
{
value = null;
}
}
return value;
}
#endregion|
InstanceStateSnapshot::GetAttributeValue ( ChildNode node, IList |