laskoviymishka commented on code in PR #779:
URL: https://github.com/apache/iceberg-go/pull/779#discussion_r2929751537
##########
table/arrow_utils.go:
##########
@@ -715,6 +716,45 @@ func retOrPanic[T any](v T, err error) T {
return v
}
+// writeDefaultToScalar converts an Iceberg write-default value to an Arrow
scalar.
+func writeDefaultToScalar(v any, t iceberg.Type, dt arrow.DataType)
scalar.Scalar {
+ switch t.(type) {
+ case iceberg.DateType:
+ return scalar.NewDate32Scalar(arrow.Date32(v.(iceberg.Date)))
+ case iceberg.TimeType:
+ return scalar.NewTime64Scalar(arrow.Time64(v.(iceberg.Time)),
dt)
+ case iceberg.TimestampType, iceberg.TimestampTzType:
+ return
scalar.NewTimestampScalar(arrow.Timestamp(v.(iceberg.Timestamp)), dt)
+ case iceberg.TimestampNsType, iceberg.TimestampTzNsType:
+ return
scalar.NewTimestampScalar(arrow.Timestamp(v.(iceberg.TimestampNano)), dt)
+ case iceberg.UUIDType:
+ u := v.(uuid.UUID)
+
+ return retOrPanic(scalar.MakeScalarParam(u[:],
&arrow.FixedSizeBinaryType{ByteWidth: 16}))
+ case iceberg.DecimalType:
+ d := v.(iceberg.Decimal)
+
+ return scalar.NewDecimal128Scalar(d.Val, dt)
+ default:
+ return retOrPanic(scalar.MakeScalarParam(v, dt))
Review Comment:
fair, seems like visitor will catch this panic and wrap in proper error.
writeDefaultToArray should panic with a descriptive fmt.Errorf(...) and
Visit will catch it.
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