arina-ielchiieva commented on a change in pull request #1829: DRILL-7096:
Develop vector for canonical Map<K,V>
URL: https://github.com/apache/drill/pull/1829#discussion_r317073465
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetReaderUtility.java
##########
@@ -713,4 +715,63 @@ public static boolean
containsComplexColumn(ParquetMetadata footer, List<SchemaP
}
return false;
}
+
+ /**
+ * Converts list of {@link OriginalType}s to list of {@link
org.apache.drill.common.types.TypeProtos.MajorType}s.
+ * <b>NOTE</b>: current implementation cares about {@link OriginalType#MAP}
only
+ * converting it to {@link
org.apache.drill.common.types.TypeProtos.MinorType#DICT}.
+ * Other original types are converted to {@code null}.
+ *
+ * @param originalTypes list of Parquet's types
+ * @return list containing either {@code null} or type with minor
+ * type {@link
org.apache.drill.common.types.TypeProtos.MinorType#DICT} values
+ */
+ public static List<TypeProtos.MajorType> getComplexTypes(List<OriginalType>
originalTypes) {
Review comment:
It would be nice to explain why others converted to null...
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