rednaxelafx commented on a change in pull request #20965: [SPARK-21870][SQL]
Split aggregation code into small functions
URL: https://github.com/apache/spark/pull/20965#discussion_r316430268
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
##########
@@ -1612,6 +1612,49 @@ object CodeGenerator extends Logging {
}
}
+ /**
+ * Extracts all the input variables from references and subexpression
elimination states
+ * for a given `expr`. This result will be used to split the generated code
of
+ * expressions into multiple functions.
+ */
+ def getLocalInputVariableValues(
+ context: CodegenContext,
+ expr: Expression,
+ subExprs: Map[Expression, SubExprEliminationState]): Seq[((String,
DataType), Expression)] = {
Review comment:
`(String, DataType)` looks like a degenerated `VariableValue`. Can we just
use the `VariableValue` type here?
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