/// <summary>
/// Handles a method call.
/// </summary>
private ServiceResult DoGenerateRandomValues(
ISystemContext context,
MethodState method,
IList <object> inputArguments,
IList <object> outputArguments)
{
ComDaClientManager system = (ComDaClientManager)this.SystemContext.SystemHandle;
ComDaClient client = system.SelectClient((ServerSystemContext)context, false);
Opc.Ua.Test.DataGenerator generator = new Opc.Ua.Test.DataGenerator(null);
IDaElementBrowser browser = client.CreateBrowser((string)method.Handle);
// create write requests.
WriteRequestCollection requests = new WriteRequestCollection();
try
{
for (DaElement element = browser.Next(); element != null; element = browser.Next())
{
if (element.ElementType == DaElementType.Branch)
{
continue;
}
// generate a random value of the correct data tyoe.
bool isArray = false;
NodeId dataTypeId = ComUtils.GetDataTypeId(element.DataType, out isArray);
object value = generator.GetRandom(
dataTypeId,
(isArray)?ValueRanks.OneDimension:ValueRanks.Scalar,
null,
context.TypeTable);
// create a request.
requests.Add(new Opc.Ua.Com.Client.WriteRequest(element.ItemId, new DataValue(new Variant(value)), 0));
}
}
finally
{
browser.Dispose();
}
// write values.
client.Write(requests);
return(ServiceResult.Good);
}
/// <summary>
/// Initializes the next stage of browsing.
/// </summary>
private void NextStage()
{
ComDaClientManager system = (ComDaClientManager)this.SystemContext.SystemHandle;
ComDaClient client = system.SelectClient((ServerSystemContext)SystemContext, false);
// determine which stage is next based on the reference types requested.
for (Stage next = m_stage + 1; next <= Stage.Done; next++)
{
if (next == Stage.Children)
{
if (IsRequired(ReferenceTypeIds.Organizes, false))
{
m_stage = next;
break;
}
}
else if (next == Stage.Properties)
{
if (IsRequired(ReferenceTypeIds.HasProperty, false))
{
m_stage = next;
break;
}
}
else if (next == Stage.Parents)
{
if (IsRequired(ReferenceTypeIds.Organizes, true))
{
m_stage = next;
break;
}
}
else if (next == Stage.Done)
{
m_stage = next;
break;
}
}
m_position = 0;
// start enumerating branches.
if (m_stage == Stage.Children)
{
m_browser = client.CreateBrowser(m_itemId);
return;
}
// start enumerating properties.
if (m_stage == Stage.Properties)
{
m_properties = client.ReadAvailableProperties(m_itemId, true);
m_position = 0;
return;
}
// start enumerating parents.
if (m_stage == Stage.Parents)
{
m_parentId = client.FindElementParentId(m_itemId);
return;
}
// all done.
}
