Re: [DISCUSS] OPC UA Adapter - supporting multiple nodes

[Dominik Riemer <ri...@apache.org>]

Hi Tim,

this sounds like a good idea!
We could either display the tree, which would require for a new UI widget and static property, or we could maybe just transform the tree to a flat list and show it in the UI without any modifications to the core.

Probably Philipp also has some thoughts on this?

Dominik

On 2020/10/29 13:12:41, udeho <ud...@student.kit.edu> wrote: 
> Hi all,
> 
> in the last days I have done some tests with the current version of the OPC UA adapter and looked for improvements.
> One important aspect that I noticed quickly is the support of multiple nodes that are connected to the base node specified in the adapter.
> In the current state of the adapter, the getSchema method uses the specified node as a starting point and conducts a search for connected nodes.
> As soon as all connected nodes are found, all variables are displayed together as a list in the EventSchema.
> At this point, I think Streampipes could better support the hierarchical nature of OPC UA.
> One idea, which has already been raised by Philipp, would be to visualized all variables found in the nodes in a tree structure,
> so the user can see the hierarchical structure at first glance and can easily select the variables of interest.
> 
> What do you think? Would you agree that this is a useful aspect for improvement?
> Do you have any other ideas how we could deal with this?
> Do you know some use cases we should definitely consider when dealing with hierarchical nodes?
> 
> Best,
> Tim
> 
> 

Re: [DISCUSS] OPC UA Adapter - supporting multiple nodes

[Philipp Zehnder <ze...@apache.org>]

Hi,

I think the coolest solution would be to provide a tree, but as Dominik stated that would mean we have change the UI for that.
So a good first step might be the solution with the list.

How could this look like? 
For me the biggest question is what are users able to select. Can they select multiple nodes or just individual nodes?

Was ist mit der Übersicht? Wenn wir für jeden Knoten und Kindknoten einen Eintrag in der Liste machen, ist dann zu überladen?

Any thoughts on that?

Philipp


> On 10. Nov 2020, at 13:20, udeho <ud...@student.kit.edu> wrote:
> 
> Hi Dominik,
> 
> Hm, then the tree view seems to require some implementation effort.
> By this you mean transforming the tee into a list with different levels like in a bucket list or in an outline?
> 
> If this is possible with few adaptions, I think this could be a good first step.
> Best,
> Tim
> 
> On Nov. 3 2020, at 3:03 pm, Dominik Riemer <ri...@apache.org> wrote:
>> Hi Tim,
>> 
>> this sounds like a good idea!
>> We could either display the tree, which would require for a new UI widget and static property, or we could maybe just transform the tree to a flat list and show it in the UI without any modifications to the core.
>> 
>> Probably Philipp also has some thoughts on this?
>> Dominik
>> On 2020/10/29 13:12:41, udeho <ud...@student.kit.edu> wrote:
>>> Hi all,
>>> 
>>> in the last days I have done some tests with the current version of the OPC UA adapter and looked for improvements.
>>> One important aspect that I noticed quickly is the support of multiple nodes that are connected to the base node specified in the adapter.
>>> In the current state of the adapter, the getSchema method uses the specified node as a starting point and conducts a search for connected nodes.
>>> As soon as all connected nodes are found, all variables are displayed together as a list in the EventSchema.
>>> At this point, I think Streampipes could better support the hierarchical nature of OPC UA.
>>> One idea, which has already been raised by Philipp, would be to visualized all variables found in the nodes in a tree structure,
>>> so the user can see the hierarchical structure at first glance and can easily select the variables of interest.
>>> 
>>> What do you think? Would you agree that this is a useful aspect for improvement?
>>> Do you have any other ideas how we could deal with this?
>>> Do you know some use cases we should definitely consider when dealing with hierarchical nodes?
>>> 
>>> Best,
>>> Tim
>>> 
>>> 
>> 
> 

Re: [DISCUSS] OPC UA Adapter - supporting multiple nodes

[udeho <ud...@student.kit.edu>]

Hi Dominik,

Hm, then the tree view seems to require some implementation effort.
By this you mean transforming the tee into a list with different levels like in a bucket list or in an outline?

If this is possible with few adaptions, I think this could be a good first step.
Best,
Tim

On Nov. 3 2020, at 3:03 pm, Dominik Riemer <ri...@apache.org> wrote:
> Hi Tim,
>
> this sounds like a good idea!
> We could either display the tree, which would require for a new UI widget and static property, or we could maybe just transform the tree to a flat list and show it in the UI without any modifications to the core.
>
> Probably Philipp also has some thoughts on this?
> Dominik
> On 2020/10/29 13:12:41, udeho <ud...@student.kit.edu> wrote:
> > Hi all,
> >
> > in the last days I have done some tests with the current version of the OPC UA adapter and looked for improvements.
> > One important aspect that I noticed quickly is the support of multiple nodes that are connected to the base node specified in the adapter.
> > In the current state of the adapter, the getSchema method uses the specified node as a starting point and conducts a search for connected nodes.
> > As soon as all connected nodes are found, all variables are displayed together as a list in the EventSchema.
> > At this point, I think Streampipes could better support the hierarchical nature of OPC UA.
> > One idea, which has already been raised by Philipp, would be to visualized all variables found in the nodes in a tree structure,
> > so the user can see the hierarchical structure at first glance and can easily select the variables of interest.
> >
> > What do you think? Would you agree that this is a useful aspect for improvement?
> > Do you have any other ideas how we could deal with this?
> > Do you know some use cases we should definitely consider when dealing with hierarchical nodes?
> >
> > Best,
> > Tim
> >
> >
>