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https://issues.apache.org/jira/browse/POLYGENE-251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16010010#comment-16010010
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Niclas Hedhman commented on POLYGENE-251:
-----------------------------------------
I am looking at the problem with interface default methods and that
Concerns/SideEffects doesn't work.
It is related to the issue that there is no Mixin in the regular sense. The
MethodHandle approach was added to the invocation side of things, but
declaration-wise we need a MixinModel that represents default methods. The
missing bit goes into
org/apache/polygene/runtime/bootstrap/CompositeAssemblyImpl.java:343 (return
null).
> Support Java 8 default methods on interfaces
> --------------------------------------------
>
> Key: POLYGENE-251
> URL: https://issues.apache.org/jira/browse/POLYGENE-251
> Project: Polygene
> Issue Type: Bug
> Reporter: Paul Merlin
> Assignee: Niclas Hedhman
> Priority: Blocker
> Fix For: 3.0
>
>
> The following composite declaration:
> {code}
> public interface DefaultMethods
> {
> default String sayHello( String name )
> {
> return "Hello, " + name + '!';
> }
> }
> {code}
> fails at assembly with:
> {code}
> Composition Problems Report:
> message: No implementation found for method
> method: String sayHello(String name)
> {code}
> See {{InterfaceDefaultMethodsTest}} in {{core/runtime}}
> Also see POLYGENE-120 for some preliminary investigation.
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