How to bind an object to a node?

.Net Add-on Programming
1

Hi,

 

I created a custom component with the .net addon and I’d like to bind some additional objects to each node of it. Is there any way to do that?

2

Hi,

To attach components to a parent node you can use ISimNode.AttachTo() method. So this snippet would attach comp2 to comp1:

ISimComponent comp1 = app.World.FindComponent("comp1");
ISimComponent comp2 = app.World.FindComponent("comp2");
comp2.RootNode.AttachTo(comp1.RootNode);

-k

3

Hi Keke,

Thanks for replying. But what I want is to add some data to a node.

for example:

ISimComponent comp2 = app.World.FindComponent("comp2");
comp2.RootNode.AddData(key, jsonData); //I'm finding some method like 'AddData' here
4

Well there are many ways you could store data in a node. You could use for example a property or a note behaviour. Note behaviour might be more suitable for large strings. Here’s a small snippet to create a string property and a note behaviour:

IProperty prop = comp1.CreateProperty(typeof(string), PropertyConstraintType.NotSpecified, "Data");
prop.Value = "Your data";

INote note = comp1.RootNode.CreateBehaviorByType(BehaviorType.Note) as INote;
note.Note = "Your data";

To access existing properies and note behaviours use ISimComponent.GetProperty() and ISimComponent.FindBehaviour() methods. IBehavior needs to be cast to INote type for accessing its contents on (INote.Note).

-k

5

Another way, if there is no need for data persistancy, is by using IApplication.SetSessionValue() method. In there you can store any object like, for example, a Dictionary which you can use to link some data to an ISimNode

6

Thanks Keke & ccamilo, your answers are really helpful.