RussellSpitzer commented on code in PR #14040:
URL: https://github.com/apache/iceberg/pull/14040#discussion_r2373094205
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parquet/src/main/java/org/apache/iceberg/data/parquet/BaseParquetReaders.java:
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@@ -75,8 +78,26 @@ protected ParquetValueReader<T> createReader(
}
}
- protected abstract ParquetValueReader<T> createStructReader(
- List<ParquetValueReader<?>> fieldReaders, Types.StructType structType);
+ /**
+ * This method can be overridden to provide a custom implementation which
also uses the fieldId of
+ * the Schema when creating the struct reader
+ */
+ protected ParquetValueReader<T> createStructReader(
+ List<ParquetValueReader<?>> fieldReaders, Types.StructType structType,
Integer fieldId) {
+ // Fallback to the signature without fieldId if not overridden
+ return createStructReader(fieldReaders, structType);
+ }
+
+ /**
+ * @deprecated will be removed in 1.11.0. Subclasses should override {@link
+ * #createStructReader(List, Types.StructType, Integer)} instead
+ */
+ @Deprecated
+ protected ParquetValueReader<T> createStructReader(
+ List<ParquetValueReader<?>> fieldReaders, Types.StructType structType) {
+ throw new UnsupportedOperationException(
Review Comment:
No, the method was "abstract" before so they would have had to have
implemented this method. I made it concrete here so I could remove the
implementations from the two child classes we currently have rather than
marking it deprecated there as well.
If you check the 3 arg version, it calls the subclasses 2 arg version if not
defined so existing behavior should be the same.
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