Jouni Aro said

The attribute values are defined in the ‘Attributes’ class.

DataType is a NodeId. All standard NodeIds are defined in the Identifiers class. But it may be best to look up the respective DataType node, which you can get from UaCilent.getAddressSpace().getType() (you can cast the result to a UaDataType).

AccessLevel defines the enumeration the access level attributes – the integer value defines an EnumSet and there are respective methods to convert the integer to the EnumSet.

Could you provide that methods to convert the integer value to EnumSet. I cannot find it in org.opcfoundation.ua.core package.

Alright, i get it. But that is not enough. Let me put it that way:
During browsing address space, at one node i called a method to get all the attributes of that node using following code
DataValue[] value = null;
UnsignedInteger attributeId[];
attributeId={Attributes.NodeId,Attributes.NodeClass,Attributes.BrowseName,Attributes.DisplayName,Attributes.Description,Attributes.WriteMask,Attributes.UserWriteMask,
Attributes.IsAbstract,Attributes.Symmetric,Attributes.InverseName,Attributes.ContainsNoLoops,Attributes.EventNotifier,Attributes.Value,Attributes.DataType,Attributes.ValueRank,Attributes.ArrayDimensions,Attributes.AccessLevel,Attributes.UserAccessLevel,Attributes.MinimumSamplingInterval,Attributes.Historizing,Attributes.Executable,Attributes.UserExecutable};

value = client.readAttributes(node, attributeId);

Now in return it gives me the following values.(A loop prints all the values.null values are omitted)
0: NodeId ns=2;s=MyLevel
1: NodeClass 2
2: BrowseName 2:MyLevel
3: DisplayName (en) MyLevel
5: WriteMask 0
6: UserWriteMask 2097151
12: Value 38.0
13: DataType class org.opcfoundation.ua.builtintypes.DataValue
i=11
14: ValueRank -1
16: AccessLevel 7
17: UserAccessLevel 7
18: MinimumSamplingInterval -1.0
19: Historizing true

What i am asking is a method to convert that integer value to a string message or user understandable form. Like in Node class attribute,2 represent it is a variable node-class. I studied the OPC UA address space, but i cant interpret the other attributes like, DataType,UserWriteMask,ValueRank,AccessLevel,UserAccesLevel,
MinimumSamplingInterval. There is a lot variety of data types.

I think i made my point, i simply need a method or methods to convert these return values to a string or User readable form. And sorry for my explanation, it is pretty confusing!!

Regards:
Shahzad

Ok, Thanks a lot.
There is another question, can we save an object of a class of UaClient?
if yes, then what is the the appropriate way to save it?
I have searched many ways, but none of them work.
Please help me out here!

Regards:
Shahzad

We want save it either on Sq Lite Database or in Shared preferences. Once the connection is done and UaClient Object is created, we want to save the object so next time we don’t have to create the client. That is what we are thinking, but only if it is possible. That is why we asked.

Well thanks a lot!