[GROOVY-6048] Generated Java stub for inner interface with generics fails to compile

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.7, 2.2.0-beta-2
• Component/s: Stub generator / Joint compiler
• Assignee: Jochen Theodorou
• Reporter: Graeme Rocher
• Created: 12/Mar/13 18:42
• Updated: 15/Oct/15 18:19
• Resolved: 21/Aug/13 04:33

Description

I have a Groovy class with a method signature like:

    static<T> Promise<List<T>> createPromise(List<Closure<T>> closures, List<Promise.Decorator> decorators) {
        promiseFactory.createPromise(closures, decorators)
    }

The java stub that is generated looks like

public static <T> grails.async.Promise<T> createPromise(groovy.lang.Closure<T> c, java.util.List<grails.async.Promise<T>.Decorator> decorators) { return (grails.async.Promise<T>)null;}

This fails to compile with:

[ant:groovyc] /var/folders/hl/pxmk_v3x
[ant:groovyc] 48l314rrxckj16sw0000gn/T/groovy-generated-6992284223603375969-java-source/grails/async/Promises.java:27: cannot select a static 
[ant:groovyc] class from a parameterized type
[ant:groovyc] public static <T> grails.async.Promise<java.util.List<T>> createPromise(java.util.List<groovy.la
[ant:groovyc] ng.Closure<T>> closures, java.util.List<grails.async.Promise<T>.Decorator> decorators) { return (grails.async.Promise<java.util.
[ant:groovyc] List<T>>)null;}