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[Xcore] produces non-compiling Java code when using closures [message #965783]

Wed, 31 October 2012 09:58

Nicolas Cabanis
Messages: 12
Registered: July 2009

Junior Member

Hello,

I am referring to http://wiki.eclipse.org/Xcore # Specifying an Operation.

Assume the following method is added to the Library class:

   op Book[] findBooksByAuthor (Author author) {
      return authors.filter [it == author].toList
   }

produces two problems:
1.) an EList is expected instead of List
2.) the generated code contains an anonymous inner class and the "author" param is not final

Regards,
Nicolas

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Re: [Xcore] produces non-compiling Java code when using closures [message #965809 is a reply to message #965783]

Wed, 31 October 2012 10:14

Ed Merks
Messages: 24545
Registered: July 2009

Senior Member

Nicolas,

All the parameters should be final in the recent nightly builds. These
builds also include support for extension methods, so you can write toEList.

On 31/10/2012 2:58 PM, Nicolas Cabanis wrote:
> Hello,
>
> I am referring to http://wiki.eclipse.org/Xcore # Specifying an
> Operation.
>
> Assume the following method is added to the Library class:
>
> op Book[] findBooksByAuthor (Author author) {
> return authors.filter [it == author].toList
> }
>
>
> produces two problems:
> 1.) an EList is expected instead of List
> 2.) the generated code contains an anonymous inner class and the
> "author" param is not final
>
> Regards,
> Nicolas

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