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Implement TimeStampXXXTZVector for parquet isAdjustedToUTC #926 #576 #577 #927

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Implement TimeStampXXXTZVector for parquet isAdjustedToUTC #926 #576 #577 #927

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b5c614c
Implement TimeStampMicroTZVector for parquet isAdjustedToUTC timestam…
Oct 17, 2024
d5bd3a2
test for TimeStampMicroTZVector
Oct 18, 2024
330951c
add support for TimeStampNanoTZVector
Oct 18, 2024
7bc05a4
fix precision of TimeStampMicroTZVector (div. 1_000L was wrong)
Oct 18, 2024
bd049d9
add support for TimeStampMilliTZVector
Oct 18, 2024
cbdf8f7
use proper utility method for TimeStampNanoTZVector
Oct 18, 2024
e121232
add support for timeStampSecTZVector
Oct 18, 2024
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test for TimeStampMicroTZVector
  • Loading branch information
Laurent Perez committed Oct 18, 2024
commit d5bd3a2cca6a2c14f007a291342026d4d28c7ce6
2 changes: 1 addition & 1 deletion dataframe-arrow/src/main/kotlin/org/jetbrains/kotlinx/dataframe/io/arrowReadingImpl.kt
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Expand Up @@ -188,7 +188,7 @@ private fun TimeStampMicroTZVector.values(range: IntRange): List<LocalDateTime?>
if (isNull(i)) {
null
} else {
Instant.fromEpochMilliseconds(getObject(it) / 1000)
Instant.fromEpochMilliseconds(getObject(it) / 1_000L)
.toLocalDateTime(TimeZone.of(this.timeZone))
}
}
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13 changes: 12 additions & 1 deletion dataframe-arrow/src/test/kotlin/org/jetbrains/kotlinx/dataframe/io/ArrowKtTest.kt
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Expand Up @@ -9,6 +9,7 @@ import kotlinx.datetime.UtcOffset
import kotlinx.datetime.toInstant
import kotlinx.datetime.toJavaInstant
import org.apache.arrow.memory.RootAllocator
import org.apache.arrow.vector.TimeStampMicroTZVector
import org.apache.arrow.vector.TimeStampMicroVector
import org.apache.arrow.vector.TimeStampMilliVector
import org.apache.arrow.vector.TimeStampNanoVector
Expand Down Expand Up @@ -533,6 +534,7 @@ internal class ArrowKtTest {
val dataFrame = dataFrameOf(
"ts_nano" to dates,
"ts_micro" to dates,
"ts_micro_tz" to dates,
"ts_milli" to dates,
"ts_sec" to dates,
)
Expand All @@ -555,6 +557,12 @@ internal class ArrowKtTest {
null,
)

val timeStampMicroTZ = Field(
"ts_micro_tz",
FieldType.nullable(ArrowType.Timestamp(TimeUnit.MICROSECOND, "UTC")),
null,
)

val timeStampNano = Field(
"ts_nano",
FieldType.nullable(ArrowType.Timestamp(TimeUnit.NANOSECOND, null)),
Expand All @@ -567,22 +575,25 @@ internal class ArrowKtTest {
null,
)
val schemaTimeStamp = Schema(
listOf(timeStampNano, timeStampMicro, timeStampMilli, timeStampSec),
listOf(timeStampNano, timeStampMicro, timeStampMicroTZ, timeStampMilli, timeStampSec),
)
VectorSchemaRoot.create(schemaTimeStamp, allocator).use { vectorSchemaRoot ->
val timeStampMilliVector = vectorSchemaRoot.getVector("ts_milli") as TimeStampMilliVector
val timeStampNanoVector = vectorSchemaRoot.getVector("ts_nano") as TimeStampNanoVector
val timeStampMicroVector = vectorSchemaRoot.getVector("ts_micro") as TimeStampMicroVector
val timeStampMicroTZVector = vectorSchemaRoot.getVector("ts_micro_tz") as TimeStampMicroTZVector
val timeStampSecVector = vectorSchemaRoot.getVector("ts_sec") as TimeStampSecVector
timeStampMilliVector.allocateNew(dates.size)
timeStampNanoVector.allocateNew(dates.size)
timeStampMicroVector.allocateNew(dates.size)
timeStampMicroTZVector.allocateNew(dates.size)
timeStampSecVector.allocateNew(dates.size)

dates.forEachIndexed { index, localDateTime ->
val instant = localDateTime.toInstant(UtcOffset.ZERO).toJavaInstant()
timeStampNanoVector[index] = instant.toEpochMilli() * 1_000_000L + instant.nano
timeStampMicroVector[index] = instant.toEpochMilli() * 1_000L
timeStampMicroTZVector[index] = instant.toEpochMilli() * 1_000L
timeStampMilliVector[index] = instant.toEpochMilli()
timeStampSecVector[index] = instant.toEpochMilli() / 1_000L
}
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