zero323 commented on a change in pull request #29935:
URL: https://github.com/apache/spark/pull/29935#discussion_r562216651
##########
File path: python/pyspark/sql/types.py
##########
@@ -186,6 +186,30 @@ def fromInternal(self, ts):
return datetime.datetime.fromtimestamp(ts //
1000000).replace(microsecond=ts % 1000000)
+class CalendarIntervalType(DataType, metaclass=DataTypeSingleton):
+ """Calendar Interval type
+ """
+ @classmethod
+ def typeName(cls):
+ return "interval"
+
+ def needConversion(self):
+ return True
+
+ def simpleString(self):
+ return "interval"
+
+ def toInternal(self, di):
+ raise NotImplementedError(
+ "Conversion from external Python types to interval not supported"
+ )
Review comment:
For full support we might need both Python and JVM component. If I
recall correctly `timedelta` has razrovine mapping to their internal
`net.razorvine.pickle.objects.TimeDelta`.
In the opposite direction we could, if I am not mistaken, start with making
`CalendarInterval` bean compatible, but there is compatibility issue ‒ we'd
have to map from Spark's months to Python's days.
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