Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/16981#discussion_r101947175
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonUtils.scala
---
@@ -55,4 +60,26 @@ object JacksonUtils {
schema.foreach(field => verifyType(field.name, field.dataType))
}
+
+ private def validateStringLiteral(exp: Expression): String = exp match {
+ case Literal(s, StringType) => s.toString
+ case e => throw new AnalysisException("Must be a string literal, but:
" + e)
+ }
+
+ def validateSchemaLiteral(exp: Expression): StructType =
+ DataType.fromJson(validateStringLiteral(exp)).asInstanceOf[StructType]
--- End diff --
okay, I'll do that ;)
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