nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Getting access to DCComponententry elements

medini_1063023713

Hello,

I have a basic question that I was not able to find in the Medini help section or on this forum. I would like to get access to the elements of a DCComponentEntry.

It seems that it returns an array of pointers. However I am stuck as I don't know how to access the elements of that array of pointers?

I have tried to convert it to an Array or to a List but it does not work.

My ultimate goal is to create a 'FMEDA dashboard' where I list all the HW parts of my FMEDA and for which I calculate local HW architectural metrics (SPFM,p SPFM,t and LFM,p) (by aggregating respectively SPF/RFp, SPF/RFt and MPF,latent,p for all children of each and every HW part (as long as they have children)).

I do have these local metrics in my FMEDA sheet already but only at the leaves (lowest level of architecture of my FMEDA). For this, I used Profiling like this for SPFM,p for instance (((self.failureRate-self.totalSpfFailureRate)/self.failureRate)*100)

The value add of this dashboard would be to calculate these metrics at any level of abstraction and therefore identify HW components, parts or sub-parts for which better diagnostic coverage would be required.

My script would start with the first DCComponentEntry of this Dashboard:

var MyObject=finder.findByType(Metamodel.dc.DCComponentEntry,true).and("worksheet",Dashboard).first();

it would return something like this:

I am interested in storing the bold entries in arrays or lists.

MyObject
de.ikv.analyze.metamodel.dc.impl.DCComponentEntryImpl@25263a62 (eClass:
org.eclipse.emf.ecore.impl.EClassImpl@4e133830 (name: DCComponentEntry)
(instanceClassName: null) (abstract: false, interface: false))
(mediniIdentifier: _E4HBcNoAEe6ZQMk9R31sTg)

->
de.ikv.analyze.domain.core.emf.DomainAwareSysMLPartImpl@6f7087c5 (eClass:
org.eclipse.emf.ecore.impl.EClassImpl@6eeb0b30 (name: SysMLPart)
(instanceClassName: null) (abstract: false, interface: false)) (mediniIdentifier:
_3PRGYMFVEeyXoaKDXxFd-g) (visibility: PUBLIC_VIS, typeCode: Component,
stereotype: , name: XXX , alias: , description: Scope:) (safetyRelated:
true, failureRate: 0.0, failureRateMode: FROM_CATALOG, rawFailureRate: 0.0,
percentage: 0.0, includeChildrenFailureRate: false, transientFailureRate: 0.0,
asset: false) (partNumber: , computeAverageFailureRates: false, direction:
<unset>, type: , isOrdered: false, isUnique: false, upper: , lower: ,
isComposite: true, variation: false) (nestingLevel: null, criticalities: null,
operatingTime: <unset>) (totalFailureRate: 0.0, totalSpfFailureRate: 0.0,
spfImportancy: 0.0, totalLmpfFailureRate: 0.0, lmpfImportancy: 0.0,
safetyRelated: true, transientFailureRate: 0.0, totalTransientFailureRate:
null, totalSpfTransientFailureRate: 0.0, spfTransientImportancy: 0.0,
totalLmpfTransientFailureRate: 0.0, lmpfTransientImportancy: 0.0)

Then I would look at children and continue...

var MyfirstObject=MyObject.children;

Thank you for your support and my apologies if this topic was described somewhere else.

Regards,

Romain Pouet

Find more posts tagged with

medini

medini legacy

Accepted answers

All comments

medini_1024169437

Romain, I am not 100% sure I understand the problem, so maybe we can first elaborate a little bit more on your question. The call to the finder that you have mentioned returns a single object only, right? Due to the call to first().

So MyObject is a single DCComponentEntry instance. Each entry in FMEA and FMEDA has typically a reference to an element in the systemn architecture, that reference is named "element" and is shown in your stringified version of the object as the -> text, so anything after the -> is the real sysml element behind the proxy, reachable with proxy.element or in your case MyObject.element.

The idea to continue with children using .children is correct, that gives you a list and you should be able to access it with .size() or .get(i) etc. Converting it to an array is a good idea to work more JS like.

Maybe that helps already, I am not sure

Jan

medini_1063023713

Hello Jan,

yes, it returns a single object first and then I look at its children.

The proxy MyObject.element is I guess what I was missing.

I will continue working on it and let you know if I need further support.

Thank you,

Romain

medini_1063023713

Hello Jan,

my function to aggregate SPF/RF and MPF,latent from a FMEDA sheet works.

Now, I would like to write these values into my dashboard (another DC sheet).

I am not able to write values in the totalSpfFailureRate property of my dashboard because these are derived properties. I have tried to write it in a custom property that I have added into my DCComponentEntry profiling. However it does not work either.

Is there a means to show these calculated values in Medini (in a dedicated DC sheet) or is the Excel export the only solution?

function UpdateDashboard(sheet){

DC.synchronizeWorksheet(sheet);

// column
SPFp

for (var s in SPFp) {

var TargetElem= finder.findByType(Metamodel.sysml.SysMLPart).and("mediniIdentifier", s).first();

var
TargetElemDC=finder.findByType(Metamodel.dc.DCComponentEntry).and("element", TargetElem).and("worksheet",Dashboard).first();

TargetElemDC.totalSpfFailureRate=parseFloat(SPFp[s]);

// TargetElemDC.user_Spfp_Recalc=parseFloat(SPFp[s]);

// None of these assignments are possible!

}

…

}

Thank you,

Romain

medini_1024169437

Hello Romain, good to hear that you made progress. You indeed cant write any derived value.

However, TargetElemDC.user_Spfp_Recalc should work. What kind of error do you get and which type is that user property?

With 2024 R1 (maybe already 23.2.1) you should be able to use a dynamic sysml views to show your metrics maybe better than a DC sheet?

Regards

Jan

medini_1063023713

Hello Jan,

the error I get is the following:

I have tried with string property and reference property. It does not work.

I am not sure if the dynamic sysml views actually address my use case. Could you point me to the section of the Medini help section that described this? I was not able to find it.

Regards,

Romain

medini_1024169437

Romain, you can find the feature itself in the Derive menu, you basically "derive" a view on a sysml model.

Are you sure that .user_Spfp_Recalc is a normal property and not a derived / scripted property?

Jan

medini_1063023713

Hello Jan,

thank you again for your swift reply.

I think the derived table view could be indeed helpful. However, I don't think it is helpful for my use case where I want to extract and aggregate following values from my DC worksheet (where I perform the analysis at the leaves):

totalSpfFailureRate (what I call SPFp)
totalSpfTransientFailureRate (what I call SPFt)
totalLmpfFailureRate (what I call LFp)

and calculate at any level the corresponding values for tracking purpose:

local SPFMp
local SPFMt
local LFM
local SPFp importancy
local SPFt importancy
local LFp importancy

While configuring this table view, it seems that I have only access to SysML elements' properties but not the results of an analysis.

I think I am certainly doing something wrong but I have tried

string property
reference property

(Boolean property, derived property and data property would not work for sure).

Here is what I have:

NOTE: don't pay attention to the capital letters that I have removed also from my code.

I don't know how to change this read-only mode of such property.

Romain

medini_1024169437

Hm, that all looks good to me. I quickly prepared a sample project with just the .user_spfp_recalc property for DCComponentEntry and used a simple script to manipulate it with these findings:

* If I define it as simple string proeprty but use = parseFLoat(...) I get an error stating " Value type does not match feature type (must be a string)" which seems logic

* If I define it as "Accept multiple values" as you have, I get the same unless I use "object.user_spfp_recalc.add(parseFloat("2.0")" which gives me "Wrapped java.lang.ArrayStoreException: java.lang.Double", also logic

* Now "object.user_spfp_recalc.add("2.0")" works for me

So I never get the transaction thing.

And: is this really a property accepting multiple values?

Happy Script Debugging

Jan

medini_1063023713

Hello Jan,

I am back!

Thank you, it helped me.

I was able to get what I want by using following statement:

TargetElemDC.user_spfp_recalc.clear();
TargetElemDC.user_spfp_recalc.add(SPFp[s].toString());

Is there any plan for the next Medini Analyze releases to provide us the possibility to define numbers as property where we could define the number of digits?

I think it is much more convenient to manipulate numbers than strings, especially while exporting reports to Excel.

Thank you,

Romain

medini_1024169437

Glad you solved it. I think such an extension is not planned for the next releases, I'm sorry to say.

I guess if we add it, it would be much more complex than String or Boolean, there si first of all multiple Number types (Float, Double, BigDecimal), then the input format (, . etc) and the output format a user most likely want to define...

Happy Scripting

Jan