MaxGekk commented on a change in pull request #24030: [SPARK-27109][SQL]
Refactoring of TimestampFormatter and DateFormatter
URL: https://github.com/apache/spark/pull/24030#discussion_r264045333
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/TimestampFormatter.scala
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@@ -49,16 +49,16 @@ class Iso8601TimestampFormatter(
@transient
protected lazy val formatter = getOrCreateFormatter(pattern, locale)
- private def toInstant(s: String): Instant = {
- val temporalAccessor = formatter.parse(s)
- if (temporalAccessor.query(TemporalQueries.offset()) == null) {
- toInstantWithZoneId(temporalAccessor, timeZone.toZoneId)
- } else {
- Instant.from(temporalAccessor)
- }
- }
+ override def parse(s: String): Long = {
+ val parsed = formatter.parse(s)
+ val parsedZoneId = parsed.query(TemporalQueries.zone())
+ val zoneId = if (parsedZoneId == null) timeZone.toZoneId else parsedZoneId
Review comment:
> Do we need to evaluate timeZone.toZoneId everytime?
No, we don't.
> Can we evaluate this once and store this into val when this class is
instantiated?
Sure. Actually I think of go over all time-related code in a separate PR,
and try to replace `TimeZone` objects by `ZoneId` or even by `ZoneOffset`.
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