Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/4111#discussion_r122152659
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/CodeGenerator.scala
---
@@ -871,12 +871,24 @@ class CodeGenerator(
returnType: TypeInformation[_ <: Any],
resultFieldNames: Seq[String])
: GeneratedExpression = {
- val input1AccessExprs = for (i <- 0 until input1.getArity if
input1Mapping.contains(i))
- yield generateInputAccess(input1, input1Term, i, input1Mapping)
+
+ val input1AccessExprs = if (input1.isInstanceOf[PojoTypeInfo[_]]) {
--- End diff --
Maybe a better solution is to change this code block into
```scala
val input1AccessExprs = for (i <- input1Mapping.indices)
yield generateInputAccess(input1, input1Term, i, input1Mapping)
val input2AccessExprs = input2 match {
case Some(ti) => for (i <- input2Mapping.indices)
yield generateInputAccess(ti, input2Term, i, input2Mapping)
case None => Seq() // add nothing
}
```
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