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impl cannot be resolved or is not a field [message #780461]

Wed, 18 January 2012 00:31

Iqbal Hossain
Messages: 101
Registered: May 2011
Location: Bangladesh

Senior Member

hi,
I try to create a diagram but the problem is when i try to derive *.genmodel i get this error. I try in different version of eclipse but the problem is still there.. I put a picture of it.
index.php/fa/6774/0/

"impl cannot be resolved or is not a field"????

what should i do? any quick suggestion?

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Re: impl cannot be resolved or is not a field [message #780473 is a reply to message #780461]

Wed, 18 January 2012 03:14

Ed Merks
Messages: 24538
Registered: July 2009

Senior Member

This looks like a self-induced problem. I can see that your package
name is NetworkDiagram but standard Java language naming rules dictate
that package names should start with a lower case letter and that class
names should start with an upper case letter. I can see in your outline
that you do have a class named NetworkDiagram too. Now when Java sees
NetworkDiagram.impl in the body of your interface how does it know if
NetworkDiagram refers to a package or a class? It's a bit ambiguous and
Java favors the class name. I'm not even sure how it would be possible
to convince Java that you want to refer to the package not the class.
So follow Java naming rules in your Ecore model (lower case package
names and upper case class names) and it will be impossible for package
and class names to collides, and hence it will be impossible to have
this problem.

On 18/01/2012 6:31 AM, iqbal Mising name wrote:
> hi,
> I try to create a diagram but the problem is when i try to derive *.genmodel i get this error. I try in different version of eclipse but the problem is still there.. I put a picture of it.
>
>
> "impl cannot be resolved or is not a field"????
>
> what should i do? any quick suggestion?

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Re: impl cannot be resolved or is not a field [message #780477 is a reply to message #780473]

Wed, 18 January 2012 03:38

Iqbal Hossain
Messages: 101
Registered: May 2011
Location: Bangladesh

Senior Member

thnxxxxxx.... I understand...it works.... Smile

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Re: impl cannot be resolved or is not a field [message #1009833 is a reply to message #780477]

Fri, 15 February 2013 15:11

John Evans
Messages: 2
Registered: October 2011
Location: Atlanta, GA

Junior Member

I had the same problem resulting from the packages generated by emf. Investigating I found that <project>.genmodel has several properties that I had not noticed or set including base package and package. I had to delete all the generated code and regenerate.

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