Server Tutorial
Version 4.0.0
5.2.3. Custom Node Manager

Instead of using the NodeManagerUaNode, you can declare a custom node manager that is derived from
NodeManager. You will need to implement all node handling yourself, but you don’t need to instantiate a
UaNode object in the memory for every node. This is especially useful if your OPC UA server is just
wrapping an existing data store and you do not want to replicate all the data in the memory of the
server. Also, if you need to provide access to a large amount of nodes (actual number depending on the
amount of memory available), this may be the only option for you.
See MyBigNodeManager for a complete example of such a node manager.

Server Tutorial
Version 4.0.0
5.2.2. Adding Nodes

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// Folder for my objects
final NodeId myObjectsFolderId = new NodeId(ns, "MyObjectsFolder");
myObjectsFolder = createInstance(FolderTypeNode.class, "MyObjects", myObjectsFolderId);
this.addNodeAndReference(objectsFolder, myObjectsFolder, Identifiers.Organizes);
// My Device Type
// The preferred way to create types is to use Information Models, but this example shows how
// you can do that also with your own code
final NodeId myDeviceTypeId = new NodeId(ns, "MyDeviceType");
UaObjectType myDeviceType = new UaObjectTypeNode(this, myDeviceTypeId,"MyDeviceType", Locale
.ENGLISH);
this.addNodeAndReference(baseObjectType, myDeviceType, Identifiers.HasSubtype);
// My Device
final NodeId myDeviceId = new NodeId(ns, "MyDevice");
myDevice = new UaObjectNode(this, myDeviceId, "MyDevice", Locale.ENGLISH);
myDevice.setTypeDefinition(myDeviceType);
myObjectsFolder.addReference(myDevice, Identifiers.HasComponent, false);
// My Level Type
final NodeId myLevelTypeId = new NodeId(ns, "MyLevelType");
UaType myLevelType = this.addType(myLevelTypeId, "MyLevelType", baseDataVariableType);
// My Level Measurement
final NodeId myLevelId = new NodeId(ns, "MyLevel");
UaType doubleType = getServer().getNodeManagerRoot().getType(Identifiers.Double);
myLevel = new CacheVariable(this, myLevelId, "MyLevel", LocalizedText.NO_LOCALE);
myLevel.setDataType(doubleType);
myLevel.setTypeDefinition(myLevelType);
myDevice.addComponent(myLevel);