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Re: [henshin-dev] Attribute default value "null" check
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Hello Johannes,
I was able to reproduce the bug and will fix it soon. In the meantime,
if you want to check for the value "null" of an attribute during
matching, you can use attribute conditions if you want to check for null:
- Assign a parameter (lets say x) to the attribute
- Define an attribute condition x == null for the rule
Regards,
Enrico
On 04.04.2011 10:31, Johannes Tietje wrote:
> Hello,
>
> I recently created a set of Henshin rules operating on a Ecore model
> with an object (Transition) whose attributes (action, trigger) are of
> type String and have a default value of "null".
>
> How do I specify that an objects attribute is assigned with "null"
> without receiving a NullPointerException (which comes up when the rule
> matcher tries to match the LHS to the model, i guess)?
>
> Kind regards,
> Johannes
>
>
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