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NPE in JFace Automatic Databinding [message #688866]

Sun, 26 June 2011 02:17

Cristiano Gavião

Messages: 279
Registered: July 2009

Senior Member

Hi people,

I'm learning Jface databinding and I'm having some problems trying to binding a EMF bean using WindowBuilder (eclipse 3.7).

My EMF bean (GoalBean) is extending another two:

Parent1
- id: ELongObject

Parent2 --> Parent1
- fieldStr: EString

GoalBean --> Parent2
- myRange: EInt

I've selected JFace Automatic Databinding wizard and them selected the GoalBean as BeanClass.
In properties list I can see only the Parent2.fieldStr. why ?

If I click on "Hide/Show properties which can't be bound" button all other properties are presented. When I've selected 'id' or 'myRange' I got this:
An error has occurred. See error log for more details.
java.lang.NullPointerException

what am I missing ?

thanks

Cristiano

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Re: NPE in JFace Automatic Databinding [message #689959 is a reply to message #688866]

Tue, 28 June 2011 16:35

Andrey Sablin

Messages: 12
Registered: March 2011

Junior Member

Work for me (see attached Eclipse project).

What properties sets for EAttributes? What editors selected for bean properties?

Attachment: RCP-EMF.zip
(Size: 32.64KB, Downloaded 169 times)

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Re: NPE in JFace Automatic Databinding [message #690428 is a reply to message #689959]

Wed, 29 June 2011 14:04

Cristiano Gavião

Messages: 279
Registered: July 2009

Senior Member

Hi, if take a look on the image that I've posted you see that even using your model I got the same NPE.

To reproduce, just click on "Hide/Show properties which can't be bound" button and then select the 'id' attribute.

cheers