Github user tarekauel commented on a diff in the pull request:
https://github.com/apache/spark/pull/6981#discussion_r34866296
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeFunctions.scala
---
@@ -54,3 +60,193 @@ case class CurrentTimestamp() extends LeafExpression {
System.currentTimeMillis() * 1000L
}
}
+
+case class Hour(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(TimestampType)
+
+ override def dataType: DataType = IntegerType
+
+ override protected def nullSafeEval(timestamp: Any): Any = {
+ DateTimeUtils.getHours(timestamp.asInstanceOf[Long])
+ }
+
+ override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode):
String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
--- End diff --
`DateTimeUtils.getClass.getName` returns
`org.apache.spark.sql.catalyst.util.DateTimeUtils$`. Is there a way to select
the name automatically and don't get the `$`?
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