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[Xcore] How to allow null in an EList? [message #1302283]

Fri, 18 April 2014 16:41

Hugo A. Garcia

Messages: 258
Registered: July 2009

Senior Member

Hi

How can I write in Xcore that source and target can contain null?

class HyperEdge {
String name
refers HyperVertex[] source
refers HyperVertex[] target
}

-H

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Re: [Xcore] How to allow null in an EList? [message #1302548 is a reply to message #1302283]

Fri, 18 April 2014 20:15

Ed Merks

Messages: 33142
Registered: July 2009

Senior Member

Hugo,

EMF doesn't allow nulls in any of the EObject list implementations, so
there's no way to specify it and no way to support it.

On 18/04/2014 6:41 PM, Hugo A. Garcia wrote:
> Hi
>
> How can I write in Xcore that source and target can contain null?
>
> class HyperEdge {
> String name
> refers HyperVertex[] source
> refers HyperVertex[] target
> }
>
> -H

Ed Merks
Professional Support: https://www.macromodeling.com/

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