/// <summary>
/// Does any initialization required before the address space can be used.
/// </summary>
/// <remarks>
/// The externalReferences is an out parameter that allows the node manager to link to nodes
/// in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and
/// should have a reference to the root folder node(s) exposed by this node manager.
/// </remarks>
public override void CreateAddressSpace(IDictionary <NodeId, IList <IReference> > externalReferences)
{
lock (Lock)
{
base.CreateAddressSpace(externalReferences);
// create the nodes from configuration.
ushort namespaceIndex = Server.NamespaceUris.GetIndexOrAppend(Namespaces.MemoryBuffer);
BaseInstanceState root = (BaseInstanceState)FindPredefinedNode(
new NodeId(Objects.MemoryBuffers, namespaceIndex),
typeof(BaseInstanceState));
// create the nodes from configuration.
namespaceIndex = Server.NamespaceUris.GetIndexOrAppend(Namespaces.MemoryBuffer + "/Instance");
if (m_configuration != null && m_configuration.Buffers != null)
{
for (int ii = 0; ii < m_configuration.Buffers.Count; ii++)
{
MemoryBufferInstance instance = m_configuration.Buffers[ii];
// create a new buffer.
MemoryBufferState bufferNode = new MemoryBufferState(SystemContext, instance);
// assign node ids.
bufferNode.Create(
SystemContext,
new NodeId(bufferNode.SymbolicName, namespaceIndex),
new QualifiedName(bufferNode.SymbolicName, namespaceIndex),
null,
true);
bufferNode.CreateBuffer(instance.DataType, instance.TagCount);
bufferNode.InitializeMonitoring(Server, this);
// save the buffers for easy look up later.
m_buffers[bufferNode.SymbolicName] = bufferNode;
// link to root.
root.AddChild(bufferNode);
}
}
}
}
/// <summary>
/// Initializes the buffer from the configuration.
/// </summary>
public MemoryBufferState(ISystemContext context, MemoryBufferInstance configuration) :
base(null)
{
#pragma warning disable RECS0021 // Warns about calls to virtual member functions occuring in the constructor
Initialize(context);
#pragma warning restore RECS0021 // Warns about calls to virtual member functions occuring in the constructor
var dataType = "UInt32";
var name = dataType;
var count = 10;
if (configuration != null)
{
count = configuration.TagCount;
if (!string.IsNullOrEmpty(configuration.DataType))
{
dataType = configuration.DataType;
}
if (!string.IsNullOrEmpty(configuration.Name))
{
name = dataType;
}
}
SymbolicName = name;
var elementType = BuiltInType.UInt32;
switch (dataType)
{
case "Double": {
elementType = BuiltInType.Double;
break;
}
}
CreateBuffer(elementType, count);
}
/// <summary>
/// Initializes the buffer from the configuration.
/// </summary>
public MemoryBufferState(ISystemContext context, MemoryBufferInstance configuration) : base(null)
{
Initialize(context);
string dataType = "UInt32";
string name = dataType;
int count = 10;
if (configuration != null)
{
count = configuration.TagCount;
if (!String.IsNullOrEmpty(configuration.DataType))
{
dataType = configuration.DataType;
}
if (!String.IsNullOrEmpty(configuration.Name))
{
name = dataType;
}
}
this.SymbolicName = name;
BuiltInType elementType = BuiltInType.UInt32;
switch (dataType)
{
case "Double":
{
elementType = BuiltInType.Double;
break;
}
}
CreateBuffer(elementType, count);
}