cloud-fan commented on code in PR #37915:
URL: https://github.com/apache/spark/pull/37915#discussion_r977125557
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sql/catalyst/src/main/scala/org/apache/spark/sql/types/Decimal.scala:
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@@ -28,52 +28,35 @@ import org.apache.spark.sql.internal.SQLConf
import org.apache.spark.unsafe.types.UTF8String
/**
- * A mutable implementation of BigDecimal that can hold a Long if values are
small enough.
- *
- * The semantics of the fields are as follows:
- * - _precision and _scale represent the SQL precision and scale we are
looking for
- * - If decimalVal is set, it represents the whole decimal value
- * - Otherwise, the decimal value is longVal / (10 ** _scale)
- *
- * Note, for values between -1.0 and 1.0, precision digits are only counted
after dot.
+ * A mutable implementation of BigDecimal that hold a `DecimalOperation`.
*/
@Unstable
-final class Decimal extends Ordered[Decimal] with Serializable {
+final class Decimal(initEnabled: Boolean = true) extends Ordered[Decimal] with
Serializable {
import org.apache.spark.sql.types.Decimal._
- private var decimalVal: BigDecimal = null
- private var longVal: Long = 0L
- private var _precision: Int = 1
- private var _scale: Int = 0
+ private var decimalOperation: DecimalOperation[_] = null
Review Comment:
does it mean `decimalOperation` can be null sometimes? This seems fragile.
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