Description Christian Schneider 2015-05-29 08:09:15 EDT

Created attachment 253931 [details]
test project

Assume a Java file like this:

public class ContribJava {
    
  public static <T extends ETypedElement> T doSomething(final T typed) {
    return typed;
  }
  
  public static <T extends EClassifier> T doSomething(final T classifier) {
    return classifier;
  }
}


In an Xtend class implementing the following method

def void a() {
    ContribJava.doSomething(EcoreFactory.eINSTANCE.createEAttribute)
    ContribJava.doSomething(EcoreFactory.eINSTANCE.createEClass)
}

the second statement is flagged erroneous.

Interestingly, having 'doSomething(...)' implemented in an Xtend like 

class ContribXtend {
    
  def static <T extends ETypedElement> T doSomething(T typed) {
    return typed;
  }
    
  def static <T extends EClassifier> T doSomething(T classifier) {
    return classifier;
  }
}

def void b() {
    ContribXtend.doSomething(EcoreFactory.eINSTANCE.createEAttribute)
    ContribXtend.doSomething(EcoreFactory.eINSTANCE.createEClass)
}

can be compiled properly (although I temporarily encountered the issue there as well while writing this report; removing all files in xtend-gen fixed it).

Find a small test project attached.