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[WIP][SPARK-29669][SQL] Refactor IntervalUtils.fromDayTimeString() #26327

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[WIP][SPARK-29669][SQL] Refactor IntervalUtils.fromDayTimeString() #26327

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2e64de4
Refactor fromDayTimeString()
MaxGekk Oct 30, 2019
feee264
Use UnitName type
MaxGekk Oct 30, 2019
a1ab88d
Add unitValueProps
MaxGekk Oct 30, 2019
c3fe563
conv -> toMicros
MaxGekk Oct 30, 2019
3713abc
Refactor dayTimePattern
MaxGekk Oct 31, 2019
f381103
Merge remote-tracking branch 'remotes/origin/master' into refactor-fr…
MaxGekk Oct 31, 2019
140a26f
Special pattern for min-sec
MaxGekk Oct 31, 2019
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Add unitValueProps
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@MaxGekk
MaxGekk committed Oct 30, 2019
commit a1ab88d02a48d1399814693042e9e75e6f4f2e16
24 changes: 11 additions & 13 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/IntervalUtils.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -193,6 +193,12 @@ object IntervalUtils {
val year = Value(8, "year")
}

val unitValueProps: Map[UnitName.Value, (Long, Long, Long => Long)] = Map(
UnitName.minute -> (0, 59, Math.multiplyExact(_, MICROS_PER_MINUTE)),
UnitName.hour -> (0, 23, Math.multiplyExact(_, MICROS_PER_HOUR)),
UnitName.day -> (0, Integer.MAX_VALUE, Math.multiplyExact(_, DateTimeUtils.MICROS_PER_DAY))
)

private def unitsRange(start: UnitName.Value, end: UnitName.Value): Seq[UnitName.Value] = {
(start.id to end.id).map(UnitName(_))
}
Expand All @@ -215,24 +221,16 @@ object IntervalUtils {
val m = dayTimePattern.pattern.matcher(input)
require(m.matches, s"Interval string must match day-time format of 'd h:m:s.n': $input")

def toLong(unitName: UnitName.Value, minValue: Long, maxValue: Long): Long = {
def toLong(unitName: UnitName.Value): Long = {
val name = unitName.toString
toLongWithRange(name, m.group(name), minValue, maxValue)
val (minValue, maxValue, conv) = unitValueProps(unitName)
conv(toLongWithRange(name, m.group(name), minValue, maxValue))
}

try {
val micros = unitsRange(to, from).map {
case name @ UnitName.day =>
val days = toLong(name, 0, Integer.MAX_VALUE)
Math.multiplyExact(days, DateTimeUtils.MICROS_PER_DAY)
case name @ UnitName.hour =>
val hours = toLong(name, 0, 23)
Math.multiplyExact(hours, MICROS_PER_HOUR)
case name @ UnitName.minute =>
val minutes = toLong(name, 0, 59)
Math.multiplyExact(minutes, MICROS_PER_MINUTE)
case UnitName.second =>
parseSecondNano(m.group(UnitName.second.toString))
case name @ (UnitName.day | UnitName.hour | UnitName.minute) => toLong(name)
case UnitName.second => parseSecondNano(m.group(UnitName.second.toString))
case _ =>
throw new IllegalArgumentException(
s"Cannot support (interval '$input' $from to $to) expression")
Expand Down