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detecting empty collection [message #1766706]

Mon, 26 June 2017 11:56

samuel kallmeyer is currently offline

samuel kallmeyer

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Hi,
I'm looping through requirements properties to detect which are traced, satisfied,...
I'm able to retrieve the associated collection, but I'm not able to detect when it is empty with the following code:
[for (r:uml::Class| p.ownedElement->select(not getAppliedStereotype('SysML::Requirements::Requirement').oclIsUndefined())->sortedBy(name))]<drop/>
[if (r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'),'tracedTo')->notEmpty())] <drop/>
[for (e:Element | r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'),'tracedTo'))] <drop/>
// DO TBD
[/for] <drop/>
[else] <drop/>
// DO in case nothing is traced
[/if] <drop/>
[/for] <drop/>

The (r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'),'tracedTo') should return a collection, or am I wrong ?

Samuel

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Re: detecting empty collection [message #1766707 is a reply to message #1766706]

Mon, 26 June 2017 12:09

Yves BERNARD is currently offline

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I remember having faced a similar issue in the past.

Try something like that:
r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(ecore::EObject)->asSet()

Cheers,

Yves

Yves

[Updated on: Mon, 26 June 2017 12:10]

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Re: detecting empty collection [message #1766715 is a reply to message #1766707]

Mon, 26 June 2017 13:15

samuel kallmeyer is currently offline

samuel kallmeyer

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Hello Yves,
I started to write my code from your old post before asking on the list...
your current reply unfortunately doesn't help.
Regards,

Samuel

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Re: detecting empty collection [message #1766716 is a reply to message #1766715]

Mon, 26 June 2017 13:22

Tristan Faure is currently offline

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What kind of errors do you get ?

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Re: detecting empty collection [message #1766719 is a reply to message #1766716]

Mon, 26 June 2017 13:36

samuel kallmeyer is currently offline

samuel kallmeyer

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See details.
The execution of a script failed: Error during generation of Gendoc script :Invalid Expression Type: Set(EObject) should be Boolean

if I'm adding the isEmpty() to check the Set:
[if (r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(ecore::EObject)->asSet()->isEmpty())] <drop/>

I have nothing more as output, neither when I have a traced requirement or not.
Starts to become complicated to mix between Profiles, SysML, UML, ocl, ... :-)

Samuel

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Re: detecting empty collection [message #1766720 is a reply to message #1766719]

Mon, 26 June 2017 13:38

Tristan Faure is currently offline

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and what is the output without the "if"?

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Re: detecting empty collection [message #1766722 is a reply to message #1766720]

Mon, 26 June 2017 13:47

samuel kallmeyer is currently offline

samuel kallmeyer

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returns invalid

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Re: detecting empty collection [message #1766727 is a reply to message #1766722]

Mon, 26 June 2017 14:10

Tristan Faure is currently offline

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Does it work for other properties like '"id" for instance ?

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Re: detecting empty collection [message #1766731 is a reply to message #1766727]

Mon, 26 June 2017 14:44

samuel kallmeyer is currently offline

samuel kallmeyer

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[r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'id')/] -> works
[r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(ecore::EObject)/] -> invalid
[r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(ecore::EObject)->asSet()/] -> invalid
[r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(ecore::EObject)->asSet()->isEmpty()/] -> invalid

does oclAsType(ecore::EObject) is the right way to retrieve the ElementName collection part of the Requirement ?

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Re: detecting empty collection [message #1766732 is a reply to message #1766731]

Mon, 26 June 2017 14:47

Tristan Faure is currently offline

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and [r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo')/] ?

you can also try :
[Sequence(r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo'))->flatten().oclAsType(ecore::EObject)->asSet()/]

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Re: detecting empty collection [message #1766733 is a reply to message #1766732]

Mon, 26 June 2017 15:01

samuel kallmeyer is currently offline

samuel kallmeyer

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[r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo')/] is able to generate my doc file, but I'm not able to open it due to a generated error in the document.
I'm still trying the sequence as it seems the syntax is wrong -> Sequence {} ...

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Re: detecting empty collection [message #1766734 is a reply to message #1766733]

Mon, 26 June 2017 15:03

Tristan Faure is currently offline

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try [r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').toString().clean()/]

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Re: detecting empty collection [message #1766735 is a reply to message #1766734]

Mon, 26 June 2017 15:10

samuel kallmeyer is currently offline

samuel kallmeyer

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org.eclipse.uml2.uml.internal.impl.ClassImpl@34b5b73e (name: Requirement2, visibility: <unset>) (isLeaf: false, isAbstract: false, isFinalSpecialization: false) (isActive: false) When something is found
Empty when no tracedTo available

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Re: detecting empty collection [message #1766739 is a reply to message #1766735]

Mon, 26 June 2017 15:37

Tristan Faure is currently offline

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ok and with [r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(uml::NamedElement)->asSet()/]

(to display : [r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').oclAsType(uml::NamedElement)->asSet().toString().clean()/]
?

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Re: detecting empty collection [message #1766741 is a reply to message #1766739]

Mon, 26 June 2017 15:48

samuel kallmeyer is currently offline

samuel kallmeyer

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invalid in both cases

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Re: detecting empty collection [message #1766742 is a reply to message #1766741]

Mon, 26 June 2017 15:56

Tristan Faure is currently offline

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Ok so it is because of one element, try :
[Sequence(r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo'))->flatten().oclAsType(uml::NamedElement)->asSet()/]

[Updated on: Mon, 26 June 2017 15:57]

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Re: detecting empty collection [message #1766743 is a reply to message #1766742]

Mon, 26 June 2017 15:59

samuel kallmeyer is currently offline

samuel kallmeyer

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We will catch it...

See details.
The execution of a script failed: Error during generation of Gendoc script :1:1:1:8 "{" expected after "Sequence"

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Re: detecting empty collection [message #1766764 is a reply to message #1766743]

Tue, 27 June 2017 06:31

Tristan Faure is currently offline

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I always forget the syntax : [Sequence{r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo')}->flatten().oclAsType(uml::NamedElement)->asSet()/]

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Re: detecting empty collection [message #1766765 is a reply to message #1766764]

Tue, 27 June 2017 06:36

samuel kallmeyer is currently offline

samuel kallmeyer

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tx, it generates the doc file : I'm unfortunately not able to open it due to errors inside, likem the previous test: [r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo')/]

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Re: detecting empty collection [message #1766766 is a reply to message #1766765]

Tue, 27 June 2017 06:39

Tristan Faure is currently offline

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Yes because you need to use this expression in your test to display a result :
[r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').toString().clean()/]

This syntax could afraid a little bit, but when you are trained or used to, these errors are less frequent

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Re: detecting empty collection [message #1766768 is a reply to message #1766766]

Tue, 27 June 2017 06:49

samuel kallmeyer is currently offline

samuel kallmeyer

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Ok, I'm used to work with |= << 0xdeadbeef ...
I'm in this case now:
[Sequence{r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'), 'tracedTo').toString().clean()}->flatten().oclAsType(uml::NamedElement)->asSet()/] returns invalid in both cases

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Re: detecting empty collection [message #1766881 is a reply to message #1766768]

Wed, 28 June 2017 13:45

BACH TOBJI Mohamed Ali is currently offline

BACH TOBJI Mohamed Ali

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Hi Samuel,

Could you please verify if it works with the following code (it's the same code as in your first comment but with a little modification in the If condition) :

[for (r:uml::Class| p.ownedElement->select(not getAppliedStereotype('SysML::Requirements::Requirement').oclIsUndefined())->sortedBy(name))]<drop/>

[if (r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'),'tracedTo')->flatten()->notEmpty())] <drop/>

[for (e:Element | r.getValue(getAppliedStereotype('SysML::Requirements::Requirement'),'tracedTo'))] <drop/>
// DO TBD
[/for] <drop/>

[else] <drop/>
// DO in case nothing is traced
[/if] <drop/>
[/for] <drop/>

Best Regards,

Mohamed Ali

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Re: detecting empty collection [message #1766960 is a reply to message #1766881]

Thu, 29 June 2017 06:38

samuel kallmeyer is currently offline

samuel kallmeyer

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Hi Mohamed Ali,
Your solution is fine: flatten() was missing.
Thanks a lot,

Samuel

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