Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/6981#discussion_r34866983
--- 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"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getHours($c)"""
+ )
+ }
+}
+
+case class Minute(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.getMinutes(timestamp.asInstanceOf[Long])
+ }
+
+ override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode):
String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getMinutes($c)"""
+ )
+ }
+}
+
+case class Second(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.getSeconds(timestamp.asInstanceOf[Long])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getSeconds($c)"""
+ )
+ }
+}
+
+case class DayInYear(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(DateType)
+
+ override def dataType: DataType = IntegerType
+
+ override def prettyName: String = "day_in_year"
+
+ override protected def nullSafeEval(date: Any): Any = {
+ DateTimeUtils.getDayInYear(date.asInstanceOf[Int])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getDayInYear($c)"""
+ )
+ }
+}
+
+
+case class Year(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(DateType)
+
+ override def dataType: DataType = IntegerType
+
+ override protected def nullSafeEval(date: Any): Any = {
+ DateTimeUtils.getYear(date.asInstanceOf[Int])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getYear($c)"""
+ )
+ }
+}
+
+case class Quarter(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(DateType)
+
+ override def dataType: DataType = IntegerType
+
+ override protected def nullSafeEval(date: Any): Any = {
+ DateTimeUtils.getQuarter(date.asInstanceOf[Int])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getQuarter($c)"""
+ )
+ }
+}
+
+case class Month(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(DateType)
+
+ override def dataType: DataType = IntegerType
+
+ override protected def nullSafeEval(date: Any): Any = {
+ DateTimeUtils.getMonth(date.asInstanceOf[Int])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getMonth($c)"""
+ )
+ }
+}
+
+case class Day(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(DateType)
+
+ override def dataType: DataType = IntegerType
+
+ override protected def nullSafeEval(date: Any): Any = {
+ DateTimeUtils.getDayOfMonth(date.asInstanceOf[Int])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getDayOfMonth($c)"""
+ )
+ }
+}
+
+case class WeekOfYear(child: Expression) extends UnaryExpression with
ImplicitCastInputTypes {
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(DateType)
+
+ override def dataType: DataType = IntegerType
+
+ override def prettyName: String = "week_of_year"
+
+ override protected def nullSafeEval(date: Any): Any = {
+ DateTimeUtils.getWeekOfYear(date.asInstanceOf[Int])
+ }
+
+ override protected def genCode(ctx: CodeGenContext, ev:
GeneratedExpressionCode): String = {
+ val dtu = "org.apache.spark.sql.catalyst.util.DateTimeUtils"
+ defineCodeGen(ctx, ev, (c) =>
+ s"""$dtu.getWeekOfYear($c)"""
+ )
+ }
+}
+
+case class DateFormatClass(left: Expression, right: Expression) extends
BinaryExpression
+ with ImplicitCastInputTypes {
+
+ override def dataType: DataType = StringType
+
+ override def inputTypes: Seq[AbstractDataType] = Seq(TimestampType,
StringType)
+
+ override def prettyName: String = "date_format"
+
+ override protected def nullSafeEval(date: Any, format: Any): Any = {
+ val sdf = new SimpleDateFormat(format.toString)
+ UTF8String.fromString(sdf.format(new Date(date.asInstanceOf[Long] /
1000)))
+ }
+
+ override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode):
String = {
+ val sdf = classOf[SimpleDateFormat].getName
+ defineCodeGen(ctx, ev, (date, format) => {
--- End diff --
date -> timestamp ?
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