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Home » Modeling » M2T (model-to-text transformation) » [Xtend] Lists in JAVA extensions
[Xtend] Lists in JAVA extensions [message #536729] Sun, 30 May 2010 09:31 Go to previous message
Hauke Fuhrmann is currently offline Hauke Fuhrmann
Messages: 319
Registered: July 2009
Senior Member
Hi there,

for a Java internal calculation, I need to either
* pass a List as parameter to a JAVA extension or
* get a List as return value from a JAVA extension

How do I do those?

The Xtend reference does not say anything about return values of Java
extension methods at all. So how are they handled?

When I try one of these, I always get
"[Callable not found] - getPorts : getPorts"

--- xtend file
Void getPorts(List ports) :
JAVA my.PtolemyHelper.getPorts(java.util.List);

--- java file
public static void getPorts(java.util.List ports){
System.out.println("test");
}

It's the same when I change java.util.List with
org.eclipse.emf.common.util.EList.

So how can I pass an Xtend List to Java? And how could I return a Java
list to Xtend?

Cheers,
Hauke

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