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The feature is not a valid feature. (java.lang.IllegalArgumentException) [message #1692003]

Sat, 11 April 2015 19:05

Edouard R. Batot

Messages: 100
Registered: March 2015

Senior Member

Hi folks,

a common Exception is arguing with me.
It is thrown through thoses lignes (which don't need any context, I'd say) :

EStructuralFeature [b]esfInstance [/b]= instance.eClass().getEStructuralFeature(esfRefName);
EcoreEList<DynamicEObjectImpl> listSonsInst = (EcoreEList<DynamicEObjectImpl>)instance.eClass().eGet([b]esfInstance[/b]);

Well, I just take the EReference out and, to add some stuff into it, I do the eGet on the meta from the ref I got from it.... Nothing fancy.
And this is the rising exception :

Exception in thread "main" java.lang.IllegalArgumentException: The feature 'subsubtopics' is not a valid feature
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eOpenGet(BasicEObjectImpl.java:1062)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:1015)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:1003)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:998)
	at tcore.messages.Match.connectElement(Match.java:286)
	...
	at Main.main(Main.java:135)

I found on this forum a few clues about "containement" but I don't understand how I could play with that here...

Any body knows the definition of a "valid" feature ?

Thanks for your attention,
Edouard

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Re: The feature is not a valid feature. (java.lang.IllegalArgumentException) [message #1692005 is a reply to message #1692003]

Sat, 11 April 2015 19:11

Erick Hagstrom

Messages: 107
Registered: April 2014
Location: USA

Senior Member

Try doing the eGet on instance rather than on instance.eClass().

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Re: The feature is not a valid feature. (java.lang.IllegalArgumentException) [message #1692006 is a reply to message #1692005]

Sat, 11 April 2015 21:15

Edouard R. Batot

Messages: 100
Registered: March 2015

Senior Member

Hey, Erick, Thanks...
I'm playing so much with those eGet/eClass/getESF... I'm getting lost !

Thanks Erick, your promptness is astonishing !
Good day.

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