I see, transform() doesn't have the same overload that other methods do in order to support Java 8 lambdas as you'd expect. One option is to introduce something like MapFunction for transform and introduce an overload.
I think transform() isn't used much at all, so maybe why it wasn't Java-fied. Before Java 8 it wouldn't have made much sense in Java. Now it might. I think it could be OK to add the overload to match how map works. On Sun, Jul 1, 2018 at 1:33 PM Ismael Carnales <icarna...@gmail.com> wrote: > No, because Function1 from Scala is not a functional interface. > You can see a simple example of what I'm trying to accomplish In the unit > test here: > > https://github.com/void/spark/blob/java-transform/sql/core/src/test/java/test/org/apache/spark/sql/JavaDataFrameSuite.java#L73 > > > On Sun, Jul 1, 2018 at 2:48 PM Sean Owen <sro...@gmail.com> wrote: > >> Don't Java 8 lambdas let you do this pretty immediately? Can you give an >> example here of what you want to do and how you are trying to do it? >> >> On Sun, Jul 1, 2018, 12:42 PM Ismael Carnales <icarna...@gmail.com> >> wrote: >> >>> Hi, >>> it would be nice to have an easier way to use the Dataset transform >>> method from Java than implementing a Function1 from Scala. >>> >>> I've made a simple implentation here: >>> >>> https://github.com/void/spark/tree/java-transform >>> >>> Should I open a JIRA? >>> >>> Ismael Carnales >>> >>
