Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18875#discussion_r137227950
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonGenerator.scala
---
@@ -193,14 +213,27 @@ private[sql] class JacksonGenerator(
*
* @param row The row to convert
*/
- def write(row: InternalRow): Unit = writeObject(writeFields(row, schema,
rootFieldWriters))
+ def write(row: InternalRow): Unit = {
+ writeObject(writeFields(row, rowSchema.asInstanceOf[StructType],
rootFieldWriters))
+ }
/**
* Transforms multiple `InternalRow`s to JSON array using Jackson
*
* @param array The array of rows to convert
*/
- def write(array: ArrayData): Unit = writeArray(writeArrayData(array,
arrElementWriter))
+ def write(array: ArrayData): Unit = {
+ writeArray(writeArrayData(array, arrElementWriter))
+ }
+
+ /**
+ * Transforms a `MapData` to JSON object using Jackson
+ *
+ * @param map a map to convert
+ */
+ def write(map: MapData): Unit = {
+ writeObject(writeMapData(map, rowSchema.asInstanceOf[MapType],
mapElementWriter))
--- End diff --
ditto.
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