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NPE - In EMF 2.5 it works fine, because setting delegates are adding newly in EMP2.6 [message #553567]

Wed, 18 August 2010 04:20

Naag

Messages: 19
Registered: July 2009

Junior Member

Hi ALL,

i am currently facing the below issue. It would be really helpful if some one can solve me issue.

With EMF 2.6 i am facing following NPE while setting feature, can someone explain why this will happens and how to solve it as well.
Note:- In EMF 2.5 it works fine, because setting delegates are adding newly in EMP2.6

java.lang.NullPointerException
at org.eclipse.emf.ecore.util.EcoreUtil.getSettingDelegates(Eco reUtil.java:4163)
at org.eclipse.emf.ecore.util.EcoreUtil.getSettingDelegateFacto ry(EcoreUtil.java:4220)
at org.eclipse.emf.ecore.impl.EStructuralFeatureImpl.getSetting Delegate(EStructuralFeatureImpl.java:842)
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate (BasicEObjectImpl.java:1571)
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicSet(Basi cEObjectImpl.java:1137)
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjec tImpl.java:1111)
at com.nokia.tools.editing.model.impl.EditObjectImpl.eSet(EditO bjectImpl.java:264)
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjec tImpl.java:1081)

Regards
NAAG

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Re: NPE - In EMF 2.5 it works fine, because setting delegates are adding newly in EMP2.6 [message #553578 is a reply to message #553567]

Wed, 18 August 2010 05:39

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

HI NAAG

It looks as if you are invoking eSet for a dynamic feature on your
EClass before you define the EPackage container of that EClass.

The problem should go away if you associate the EClass with an EPackage
before you use dynamic functionality.

Are you sure that you have re-invoked genmodel consistently on all your
models?

The NPE looks like an unhelpful but useful diagnosis that your
code/build is broken. The NPE at 4220 of EcoreUtil could be 'fixed' but
then other problems might just get a strange nothing-happens behaviour.

Regards

Ed Willink

On 18/08/2010 05:22, Naag wrote:
> Hi ALL,
>
> i am currently facing the below issue. It would be really helpful if
> some one can solve me issue.
>
> With EMF 2.6 i am facing following NPE while setting feature, can
> someone explain why this will happens and how to solve it as well.
> Note:- In EMF 2.5 it works fine, because setting delegates are adding
> newly in EMP2.6
>
> java.lang.NullPointerException
> at org.eclipse.emf.ecore.util.EcoreUtil.getSettingDelegates(Eco
> reUtil.java:4163)
> at org.eclipse.emf.ecore.util.EcoreUtil.getSettingDelegateFacto
> ry(EcoreUtil.java:4220)
> at org.eclipse.emf.ecore.impl.EStructuralFeatureImpl.getSetting
> Delegate(EStructuralFeatureImpl.java:842)
> at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate
> (BasicEObjectImpl.java:1571)
> at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicSet(Basi
> cEObjectImpl.java:1137)
> at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjec
> tImpl.java:1111)
> at com.nokia.tools.editing.model.impl.EditObjectImpl.eSet(EditO
> bjectImpl.java:264)
> at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjec
> tImpl.java:1081)
>
>
> Regards
> NAAG

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