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[EMFStore] Commit error with SingleReferenceOperation [message #1588103]

Tue, 27 January 2015 19:03

Alain Picard

Messages: 233
Registered: July 2009

Senior Member

I have the following operation that got generated:
<operations xsi:type="org.eclipse.emf.emfstore.internal.server.model.versioning.operations:SingleReferenceOperation" identifier="_fWbwv6WBEeSia7ynTK8cgw" clientDate="2015-01-26T12:33:50.122-0500" featureName="element" unset="WAS_UNSET">
<modelElementId id="_a6l3j6WBEeSia7ynTK8cgw"/>
</operations>

that triggers an NPE in SingleReferenceOperationImpl at line 387:

if (oldModelElementReferenceValue != null) {
   final ModelElementId updatedOldValue = project.getModelElementId(oldModelElementReferenceValue);
if (!updatedOldValue.equals(oldValue)) {  <====NPE here

you will notice that it doesn't have any old or new value. Is the operation well formed or the code not correctly anticipating this situation?

Thanks
Alain

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Re: [EMFStore] Commit error with SingleReferenceOperation [message #1591503 is a reply to message #1588103]

Thu, 29 January 2015 15:19

Maximilian Koegel

Messages: 253
Registered: July 2009

Senior Member

Hi Alain,

this looks like it could be a bug. Could you tell us how the element
feature is configured in your Ecore and what operation you triggered on
the model when this operation was recorded. It would be kind of you to
open a bug and document this in the bug. Thanks!

Cheers,
Maximilian

Am 27.01.2015 um 20:03 schrieb Alain Picard:
> I have the following operation that got generated:
> <operations
> xsi:type="org.eclipse.emf.emfstore.internal.server.model.versioning.operations:SingleReferenceOperation"
> identifier="_fWbwv6WBEeSia7ynTK8cgw"
> clientDate="2015-01-26T12:33:50.122-0500" featureName="element"
> unset="WAS_UNSET">
> <modelElementId id="_a6l3j6WBEeSia7ynTK8cgw"/>
> </operations>
>
> that triggers an NPE in SingleReferenceOperationImpl at line 387:
>
> if (oldModelElementReferenceValue != null) {
> final ModelElementId updatedOldValue =
> project.getModelElementId(oldModelElementReferenceValue);
> if (!updatedOldValue.equals(oldValue)) { <====NPE here
>
>
> you will notice that it doesn't have any old or new value. Is the
> operation well formed or the code not correctly anticipating this
> situation?
>
> Thanks
> Alain

--
Maximilian Kögel

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