How can I access child stereotype attributes of System Composer model in Matlab?

Hello,

I have build a System Composer model where I have four stereotypes: the order of inheritance is "mainElement" > "componentType" > "componentAttributes" > "component", "mainElement" has no base stereotype.

Now I want to calculate the weight of the attached model "FCS_Architecture_Boeing_777". When I try to access the value of the attribute "unitWeight" of the stereotype "component", it says " Unrecognized method, property, or field 'component' for class 'systemcomposer.arch.Component' " in line 47 in "computeOverallSysWeight". I created another stereotype "Component" (with capital C!) without base stereotype. When I want to access this one it works.

Is there a possibility to access "child stereotypes" and their attribute values?

Thanks in advance.

Benjamin

Answer 1

[Feimi]

Hi Benjamin,

systemcomposer.arch.Component is the object type in our public API and its documentation is here:

https://www.mathworks.com/help/systemcomposer/ref/systemcomposer.arch.component.html

In order to access a property (attribute in your question) of a stereotype that is applied on your component, you can use the following command:

value = myComponent.getPropertyValue('DataModel.component.unitWeight') % myComponent is a systemcomposer.arch.Component object

There are some examples of the usage of this function documented here: https://www.mathworks.com/help/systemcomposer/ref/systemcomposer.arch.architecture.getpropertyvalue.html

Additionally, I assume that your use case is to calculate the weight by summing up the weights of every component. In that case, we shipped a workflow (in 2020b) that exactly fits your need. Please take a look at this example:

https://www.mathworks.com/help/systemcomposer/gs/analyze-architecture-model.html

Feimi