Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18030#discussion_r117301990
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/GenerateUnsafeProjection.scala
---
@@ -50,10 +50,15 @@ object GenerateUnsafeProjection extends
CodeGenerator[Seq[Expression], UnsafePro
fieldTypes: Seq[DataType],
bufferHolder: String): String = {
val fieldEvals = fieldTypes.zipWithIndex.map { case (dt, i) =>
- val fieldName = ctx.freshName("fieldName")
- val code = s"final ${ctx.javaType(dt)} $fieldName =
${ctx.getValue(input, dt, i.toString)};"
- val isNull = s"$input.isNullAt($i)"
- ExprCode(code, isNull, fieldName)
+ val javaType = ctx.javaType(dt)
+ val isNullVar = ctx.freshName("isNull")
+ val valueVar = ctx.freshName("value")
+ val defaultValue = ctx.defaultValue(dt)
+ val readValue = ctx.getValue(input, dt, i.toString)
+ val code = s"""
+ boolean $isNullVar = $input.isNullAt($i);
+ $javaType $valueVar = $isNullVar ? $defaultValue :
$readValue;"""
--- End diff --
Nit: style issue. Could you fix the indentation? Thanks!
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