rdblue commented on code in PR #11904:
URL: https://github.com/apache/iceberg/pull/11904#discussion_r1924339986
##########
parquet/src/main/java/org/apache/iceberg/data/parquet/BaseParquetWriter.java:
##########
@@ -192,13 +222,17 @@ public Optional<ParquetValueWriters.PrimitiveWriter<?>>
visit(
@Override
public Optional<ParquetValueWriters.PrimitiveWriter<?>> visit(
LogicalTypeAnnotation.DateLogicalTypeAnnotation dateType) {
- return Optional.of(new DateWriter(desc));
+ return Optional.ofNullable(dateWriter(desc));
}
@Override
public Optional<ParquetValueWriters.PrimitiveWriter<?>> visit(
LogicalTypeAnnotation.TimeLogicalTypeAnnotation timeType) {
- return Optional.of(new TimeWriter(desc));
+ Preconditions.checkArgument(
+ LogicalTypeAnnotation.TimeUnit.MICROS.equals(timeType.getUnit()),
+ "Cannot write time in %s, only MICROS is supported",
+ timeType.getUnit());
+ return Optional.ofNullable(timeWriter(desc));
Review Comment:
Why does this use `ofNullable`? The intent is not to expose
`BaseParquetWriter` beyond its package, so there is no need to handle cases
where the factory method return `null`. Those are error cases.
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