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[xtend] Question on "Create Functions" [message #718382]

Wed, 24 August 2011 07:36

Nikolai Busse

Messages: 15
Registered: August 2011

Junior Member

I follow the Xtend documentation and try to create Objects of (my) model class "FieldMember". But

def create result: new FieldMember() newFieldMember	() {}

leads to a syntax error "Couldn't resolve reference to JvmConstructor 'FieldMember'.". Next try is

def FieldMember create result: new FieldMemberImpl() newFieldMember() {}

which compiles, but, on running the generator workflow, leads to a Runtime error:

ERROR mf.mwe2.launch.runtime.Mwe2Launcher  - Unresolved compilation problem: 
	The constructor FieldMemberImpl() is not visible

which is clear to me, since FieldMemberImpl() is protected, and I see the same message in the java file created out of the xtend file.
So the only way I found to create such an object is to write

def newFieldMember () { EbsLangFactory::eINSTANCE.createFieldMember() }

But what goes wrong with the create functions?

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Re: [xtend] Question on "Create Functions" [message #718387 is a reply to message #718382]

Wed, 24 August 2011 07:45

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

what about
def create result: EbsLangFactory::eINSTANCE.createFieldMember() newFieldMember () {}

~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

[Updated on: Wed, 24 August 2011 07:51]

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Re: [xtend] Question on "Create Functions" [message #718411 is a reply to message #718387]

Wed, 24 August 2011 08:51

Nikolai Busse

Messages: 15
Registered: August 2011

Junior Member

Hi Christian,
many thanks again for the quick response. It doesn't look that nice as the example from the documentation but it works.
Anyhow I can't use the create function since this always returns the same object, what is exactly what they are for.
A simple

def newFieldMember() { EbsLangFactory::eINSTANCE.createFieldMember }

does it.

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