[resteasy-dev] Lambda question

[Rostislav Svoboda]

https://github.com/jhalterman/typetools#on-lambda-support

Lambda type argument resolution is currently supported for:
    Oracle JDK 8
    Open JDK 8

IBM JDK 8 will need some attention too. 

Rostislav

----- Original Message -----
> Hi Steven,
> 
> That's really interesting. It works for both Oracle JDK 1.8.0_91 and JDK
> 9 build 163 from java.net. !!
> 
> One problem I see is that Jonathan Halterman's TypeResolver class has
> the line
> 
> > String constantPoolName = JAVA_VERSION < 9 ?
> > "sun.reflect.ConstantPool" : "jdk.internal.reflect.ConstantPool";
> 
> so I don't think we could use it for any JDK < 9. Once JDK 9 stabilizes
> and Resteasy is releasing JDK 9 code, maybe it would be OK.
> 
> Even better would be if Class.getGenericInterfaces() were to work in JDK
> 9, but, as of build 163, it doesn't.
> 
> In any case, you've helped to verify that the solution requires external
> tricks. Let's hope that your "right approach" is followed.
> 
> Thank you very much,
> 
> Ron
> 
> On 04/03/2017 01:49 PM, Steven Schlansker wrote:
> >> On Apr 3, 2017, at 10:11 AM, Ron Sigal <rsigal at redhat.com> wrote:
> >> ...
> >>
> >> So, it seems that, for lambdas, Java doesn't keep the implementation type
> >> and value of the type variable at run time. Does anyone have any ideas or
> >> tricks?
> > I did not have time to play with it myself, but I did run across this:
> > https://stackoverflow.com/questions/23863716/java-how-to-resolve-generic-type-of-lambda-parameter
> > maybe that helps?
> >
> > It sounds like the "right approach" would be to request Java stash the type
> > information better for lambdas...
> >
> 
> --
> My company's smarter than your company (unless you work for Red Hat)
> 
> _______________________________________________
> resteasy-dev mailing list
> resteasy-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/resteasy-dev
>