HyukjinKwon commented on code in PR #41075:
URL: https://github.com/apache/spark/pull/41075#discussion_r1186958551
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connector/protobuf/src/main/scala/org/apache/spark/sql/protobuf/utils/ProtobufOptions.scala:
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@@ -141,6 +141,33 @@ private[sql] class ProtobufOptions(
// what information is available in a serialized proto.
val emitDefaultValues: Boolean =
parameters.getOrElse("emit.default.values", false.toString).toBoolean
+
+ // Whether to render enum fields as their integer values.
+ //
+ // As an example, consider the following message type:
+ // ```
+ // syntax = "proto3";
+ // message Person {
+ // enum Job {
+ // NONE = 0;
+ // ENGINEER = 1;
+ // DOCTOR = 2;
+ // }
+ // Job job = 1;
+ // }
+ // ```
+ //
+ // If we have an instance of this message like `Person(job = ENGINEER)`,
then the
+ // default deserialization will be:
+ // `{"job": "ENGINEER"}`
+ //
+ // But with this option set the deserialization will be:
+ // `{"job": 1}`
+ //
+ // Please note the output struct type will now contain an int column
+ // instead of string, so use caution if changing existing parsing logic.
+ val enumsAsInts: Boolean =
+ parameters.getOrElse("enums.as.ints", false.toString).toBoolean
Review Comment:
Actually those options should better be documented at
https://github.com/apache/spark/blob/master/docs/sql-data-sources-protobuf.md#deploying.
Since they are already undocumented there, I am fine without doing that in
this PR though.
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