pitrou commented on code in PR #40987:
URL: https://github.com/apache/arrow/pull/40987#discussion_r1551935477
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java/vector/src/main/java/org/apache/arrow/vector/ipc/JsonFileReader.java:
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@@ -98,10 +100,14 @@ public class JsonFileReader implements AutoCloseable,
DictionaryProvider {
public JsonFileReader(File inputFile, BufferAllocator allocator) throws
JsonParseException, IOException {
super();
this.allocator = allocator;
- MappingJsonFactory jsonFactory = new MappingJsonFactory(new ObjectMapper()
- //ignore case for enums
- .configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS, true)
- );
+ //ignore case for enums
+ ObjectMapper mapper = new
ObjectMapper().configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS, true);
+ mapper.registerSubtypes(
Review Comment:
I'm not sure what this is for. In the JSON integration format, extension
types are typically serialized as their respective storage type with additional
metadata:
https://arrow.apache.org/docs/format/Columnar.html#extension-types
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