| HELP! java.lang.NullPointerException when editing .model [message #1062358] |
Fri, 07 June 2013 07:58  |
Eclipse User |
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I've created a simple metamodel, via
• New -> Other > Empty EMF project ('crews')
• The right click on project, and New > ecore diagram;
Then saved, and registered metamodel, confirmed it has registered with Registry browser.
Then did
• New -> Other -> Epsilon > EMF Model
...associated this with the same metamodel, and then editing the model with exeed. At first I was able to add instances fine. After a couple of cycles of repeating the above, typically deleting the model before creating a new one against the modified metamodel, I now find I am getting a java.lang.NullPointerException when trying to add a particular instances of a class in the model. Attached are:
-screen dump of error
-metamodel .ecore
-metamodel diagram
The error is occuring when I try to create an instance of task. I can create instances of zone and equipment OK.
Help!
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