Github user jkbradley commented on the pull request:
https://github.com/apache/spark/pull/2919#issuecomment-61164357
@marbrus Just pushed WIP update to include Java support, but currently
have issue with accessing Scala UserDefinedType (in catalyst) from Java side.
The goal is to use a UDT defined in Scala (MyDenseVector) in Java, but the Java
user needs to be able to convert the Scala UDT to a Java UDT. It is hard to
write a (public) conversion method in Java since it needs to take a Scala UDT
as an argument (and it does not recognize the Scala UserDefinedType alias from
package.scala).
Proposal: Write a conversion method in Scala, and have Java users call it.
Thoughts? Thanks!
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