[news.eclipse.modeling.m2m] [ATL]How to add a binding in if-else stateme

[crajiz3rc@xxxxxxxxx (Rajalaxmi )]

Hi All,

I have the following grammar rule. 

module UMLToCLASS; -- Module Template
create OUT : CLASS from IN : UML;

helper context UML!Participant def: getName(): Set(String) = 
self.bind->collect(e|e.name).asSet();
rule ParticipantToComponent
{
	from 
		p     :UML!Participant
	to   
			
		c     :CLASS!Component(name<-p.name),
		s     :CLASS!Service(provide<-prList),
		prList:distinct DS!Tprovide foreach(prName in p.getName())
						   (name<-prName)
	
--	    if (not prList.isEmpty()) then
--		do
--		{
--			c.service<-s;
--		}		
--		else
--			false
--		endif
}


I am transforming Participant to Component. 

I would like to add the binding c.service<-s if prList isNotEmpty else i 
should not add this binding. (Something similar to the commented lines, 
however this code does not work because i dont know what the return value 
should be. Can anyone please suggest how i can write this binding rule 
here. 


Thank you very much

Kind Regards

Rajalaxmi