Github user mn-mikke commented on the issue:
https://github.com/apache/spark/pull/21045
@DylanGuedes What about `eval.value`?
Example:
```
val evals = children.map(_.genCode(ctx))
val args = ctx.freshName("args")
val inputs = evals.zipWithIndex.map { case (eval, index) =>
s"""
${eval.code}
if (!${eval.isNull}) {
$args[$index] = ${eval.value};
}
"""
}.mkString("\n")
val result =
s"""
ArrayData[] $args = new ArrayData[${evals.length}];
$inputs
...your transformation logic
"""
```
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