Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/6479#discussion_r31684243
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -125,32 +139,45 @@ abstract class CodeGenerator[InType <: AnyRef,
OutType <: AnyRef] extends Loggin
* @param objectTerm A possibly boxed version of the result of
evaluating this expression.
*/
protected case class EvaluatedExpression(
- code: Seq[Tree],
- nullTerm: TermName,
- primitiveTerm: TermName,
- objectTerm: TermName)
+ code: String,
+ nullTerm: String,
+ primitiveTerm: String,
+ objectTerm: String)
+
+ /**
+ * A context for codegen
+ * @param references the expressions that don't support codegen
--- End diff --
Can you elaborate a bit more on this? How do things get stored into this
list and when do they get read back?
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