Github user kiszk commented on a diff in the pull request: https://github.com/apache/spark/pull/20753#discussion_r177628991 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala --- @@ -188,8 +189,30 @@ case class StaticInvoke( override def nullable: Boolean = needNullCheck || returnNullable override def children: Seq[Expression] = arguments - override def eval(input: InternalRow): Any = - throw new UnsupportedOperationException("Only code-generated evaluation is supported.") + override def eval(input: InternalRow): Any = { + val args = arguments.map(e => e.eval(input).asInstanceOf[Object]) + val argClasses = ScalaReflection.expressionJavaClasses(arguments) + val cls = if (staticObject.getName == objectName) { + staticObject + } else { + Utils.classForName(objectName) + } + val method = cls.getDeclaredMethod(functionName, argClasses : _*) --- End diff -- Yeah, finally I added `@transient lazy`.
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